From d8b6d18d2fefee381eb6a26334a13e94126b6d8e Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Mon, 21 Dec 2020 16:22:11 +0100
Subject: Remove obsolete template code from fw

---
 fw/hid-dials/src/main.c               | 474 ++++++++++++++++++++++++++++
 fw/hid-dials/src/main.h               |  71 +++++
 fw/hid-dials/src/stm32f0xx_hal_conf.h | 319 +++++++++++++++++++
 fw/hid-dials/src/stm32f0xx_hal_msp.c  | 191 +++++++++++
 fw/hid-dials/src/stm32f0xx_it.c       | 176 +++++++++++
 fw/hid-dials/src/stm32f0xx_it.h       |  68 ++++
 fw/hid-dials/src/system_stm32f0xx.c   | 265 ++++++++++++++++
 fw/hid-dials/src/usb_device.c         | 107 +++++++
 fw/hid-dials/src/usb_device.h         | 115 +++++++
 fw/hid-dials/src/usbd_conf.c          | 576 ++++++++++++++++++++++++++++++++++
 fw/hid-dials/src/usbd_conf.h          |  82 +++++
 fw/hid-dials/src/usbd_desc.c          | 365 +++++++++++++++++++++
 fw/hid-dials/src/usbd_desc.h          | 156 +++++++++
 fw/hid-dials/src/usbd_hid.c           | 373 ++++++++++++++++++++++
 fw/hid-dials/src/usbd_hid.h           | 193 ++++++++++++
 15 files changed, 3531 insertions(+)
 create mode 100644 fw/hid-dials/src/main.c
 create mode 100644 fw/hid-dials/src/main.h
 create mode 100644 fw/hid-dials/src/stm32f0xx_hal_conf.h
 create mode 100644 fw/hid-dials/src/stm32f0xx_hal_msp.c
 create mode 100644 fw/hid-dials/src/stm32f0xx_it.c
 create mode 100644 fw/hid-dials/src/stm32f0xx_it.h
 create mode 100644 fw/hid-dials/src/system_stm32f0xx.c
 create mode 100644 fw/hid-dials/src/usb_device.c
 create mode 100644 fw/hid-dials/src/usb_device.h
 create mode 100644 fw/hid-dials/src/usbd_conf.c
 create mode 100644 fw/hid-dials/src/usbd_conf.h
 create mode 100644 fw/hid-dials/src/usbd_desc.c
 create mode 100644 fw/hid-dials/src/usbd_desc.h
 create mode 100644 fw/hid-dials/src/usbd_hid.c
 create mode 100644 fw/hid-dials/src/usbd_hid.h

(limited to 'fw/hid-dials/src')

diff --git a/fw/hid-dials/src/main.c b/fw/hid-dials/src/main.c
new file mode 100644
index 0000000..b84e24b
--- /dev/null
+++ b/fw/hid-dials/src/main.c
@@ -0,0 +1,474 @@
+
+#include <stdbool.h>
+
+#include "main.h"
+#include "usb_device.h"
+#include "usbd_hid.h"
+
+#define  HID_MEDIA_REPORT  2
+#define  HYSTERESIS 200
+
+ADC_HandleTypeDef hadc;
+DMA_HandleTypeDef hdma_adc;
+
+void SystemClock_Config(void);
+static void MX_GPIO_Init(void);
+static void key_matrix_select(int row);
+static int key_matrix_query(int debounce_time);
+static uint32_t poll_encoders(void);
+static uint32_t poll_keys(void);
+
+enum keybits {
+    /* These match up with the record descriptor in usbd_hid.c */
+    KEYBITS_NEXT        = 0x01,
+    KEYBITS_PREV        = 0x02,
+    KEYBITS_STOP        = 0x04,
+    KEYBITS_PLAY_PAUSE  = 0x08,
+    KEYBITS_MUTE        = 0x10,
+    KEYBITS_VOL_UP      = 0x20,
+    KEYBITS_VOL_DOWN    = 0x40,
+};
+
+enum key_names {
+    KEY_2   = 0,
+    KEY_3   = 1,
+    KEY_1   = 2,
+    KEY_ENC = 3,
+    KEY_4   = 4
+};
+
+enum keymap_rows {
+    KEYMAP_BOTTOM_LEFT_ENC = 0,
+    KEYMAP_TOP_RIGHT_ENC = 1,
+};
+
+enum key_matrix_params {
+    KEY_MATRIX_ROWS = 5,
+    KEY_MATRIX_COLS = 2,
+};
+
+void sendKeybits(uint8_t keybits);
+
+struct key_t
+{
+    uint8_t id;
+    uint8_t modifier;
+    uint8_t reserved;
+    uint8_t keycode[6];
+} key;
+
+uint16_t ADCreg[8];
+uint16_t ADCval[8];
+uint16_t ADClast[8];
+
+/* FIXME debug remove */
+TIM_TypeDef *tim1 = TIM1;
+TIM_TypeDef *tim3 = TIM3;
+
+int main(void)
+{
+    HAL_Init();
+
+    SystemClock_Config();
+
+    MX_GPIO_Init();
+    MX_USB_HID_INIT();
+
+    __HAL_RCC_TIM1_CLK_ENABLE();
+    __HAL_RCC_TIM3_CLK_ENABLE();
+
+    TIM1->SMCR = 3;          // Encoder mode 3
+    TIM1->CCER = 0;          // rising edge polarity
+    TIM1->ARR = 0xFFFF;      // count from 0-ARR or ARR-0
+    TIM1->CCMR1 = 0x0101;    // f_DTS/16, N=8, IC1->TI1, IC2->TI2
+    TIM1->CNT = 0;           // Initialize counter
+    TIM1->EGR = 1;           // Generate an update event
+    TIM1->CR1 = 1;           // Enable the counter
+
+    TIM3->SMCR = 3;          // Encoder mode 3
+    TIM3->CCER = 0;          // rising edge polarity
+    TIM3->ARR = 0xFFFF;      // count from 0-ARR or ARR-0
+    TIM3->CCMR1 = 0x0101;    // f_DTS/16, N=8, IC1->TI1, IC2->TI2
+    TIM3->CNT = 0;           // Initialize counter
+    TIM3->EGR = 1;           // Generate an update event
+    TIM3->CR1 = 1;           // Enable the counter
+
+    while (1) {
+        uint32_t keybits = poll_encoders();
+        for (int i=0; i<10; i++) {
+            keybits |= poll_keys();
+            HAL_Delay(1);
+        }
+        sendKeybits(keybits);
+    }
+}
+
+void * _sbrk(ptrdiff_t __incr);
+void * _sbrk(ptrdiff_t __incr) {
+    /* FIXME Do we even need this? */
+    return NULL;
+}
+
+void _init(void);
+void _init() {
+    /* FIXME Do we even need this? */
+}
+
+static uint32_t poll_encoders() {
+    static bool tx_vol_reset = 0;
+    static uint16_t tim1_last = 0, tim3_last = 0; /* timers init to 0 */
+    static int vol_delta = 0;
+
+    uint16_t tim1_now = TIM1->CNT, tim3_now = TIM3->CNT;
+    int16_t tim1_delta = (int16_t)(tim1_now - tim1_last);
+    int16_t tim3_delta = (int16_t)(tim3_now - tim3_last);
+
+    /* Gang both encoders */
+    vol_delta += tim3_delta - tim1_delta;
+
+#define VOL_DELTA_INC 4
+    uint8_t keybits = 0;
+    if (!tx_vol_reset) {
+        /* Customize encoder action here */
+        if (vol_delta >= VOL_DELTA_INC) {
+            keybits |= KEYBITS_VOL_UP;
+            vol_delta -= VOL_DELTA_INC;
+            tx_vol_reset = 1;
+        } else if (vol_delta <= -VOL_DELTA_INC) {
+            keybits |= KEYBITS_VOL_DOWN;
+            vol_delta += VOL_DELTA_INC;
+            tx_vol_reset = 1;
+        }
+    } else {
+        tx_vol_reset = 0;
+    }
+
+    tim1_last = tim1_now;
+    tim3_last = tim3_now;
+    return keybits;
+}
+
+static uint32_t poll_keys() {
+    int debounce_time = 5; /* 5 * 10 ms loop timing increments */
+    uint32_t val = key_matrix_query(debounce_time);
+    uint32_t state = val&0xffff, edges = val>>16;
+    uint32_t pressed = state & edges;
+    (void)edges; /* unused */
+    uint32_t keybits = 0;
+
+    if (pressed & (1 << KEY_3))
+        keybits |= KEYBITS_PLAY_PAUSE;
+    if (pressed & (1 << KEY_3 << KEY_MATRIX_ROWS))
+        keybits |= KEYBITS_PREV;
+    if (pressed & (1 << KEY_4 << KEY_MATRIX_ROWS))
+        keybits |= KEYBITS_NEXT;
+    if (pressed & (1 << KEY_ENC << KEY_MATRIX_ROWS))
+        keybits |= KEYBITS_MUTE;
+
+    return keybits;
+}
+
+const uint8_t _asciimap[128] =
+{
+    0x00,             // NUL
+    0x00,             // SOH
+    0x00,             // STX
+    0x00,             // ETX
+    0x00,             // EOT
+    0x00,             // ENQ
+    0x00,             // ACK
+    0x00,             // BEL
+    0x2a,           // BS   Backspace
+    0x2b,           // TAB  Tab
+    0x28,           // LF   Enter
+    0x00,             // VT
+    0x00,             // FF
+    0x00,             // CR
+    0x00,             // SO
+    0x00,             // SI
+    0x00,             // DEL
+    0x00,             // DC1
+    0x00,             // DC2
+    0x00,             // DC3
+    0x00,             // DC4
+    0x00,             // NAK
+    0x00,             // SYN
+    0x00,             // ETB
+    0x00,             // CAN
+    0x00,             // EM
+    0x00,             // SUB
+    0x00,             // ESC
+    0x00,             // FS
+    0x00,             // GS
+    0x00,             // RS
+    0x00,             // US
+
+    0x2c,          //  ' '
+    0x1e|0x80,    // !
+    0x34|0x80,    // "
+    0x20|0x80,    // #
+    0x21|0x80,    // $
+    0x22|0x80,    // %
+    0x24|0x80,    // &
+    0x34,          // '
+    0x26|0x80,    // (
+    0x27|0x80,    // )
+    0x25|0x80,    // *
+    0x2e|0x80,    // +
+    0x36,          // ,
+    0x2d,          // -
+    0x37,          // .
+    0x38,          // /
+    0x27,          // 0
+    0x1e,          // 1
+    0x1f,          // 2
+    0x20,          // 3
+    0x21,          // 4
+    0x22,          // 5
+    0x23,          // 6
+    0x24,          // 7
+    0x25,          // 8
+    0x26,          // 9
+    0x33|0x80,      // :
+    0x33,          // ;
+    0x36|0x80,      // <
+    0x2e,          // =
+    0x37|0x80,      // >
+    0x38|0x80,      // ?
+    0x1f|0x80,      // @
+    0x04|0x80,      // A
+    0x05|0x80,      // B
+    0x06|0x80,      // C
+    0x07|0x80,      // D
+    0x08|0x80,      // E
+    0x09|0x80,      // F
+    0x0a|0x80,      // G
+    0x0b|0x80,      // H
+    0x0c|0x80,      // I
+    0x0d|0x80,      // J
+    0x0e|0x80,      // K
+    0x0f|0x80,      // L
+    0x10|0x80,      // M
+    0x11|0x80,      // N
+    0x12|0x80,      // O
+    0x13|0x80,      // P
+    0x14|0x80,      // Q
+    0x15|0x80,      // R
+    0x16|0x80,      // S
+    0x17|0x80,      // T
+    0x18|0x80,      // U
+    0x19|0x80,      // V
+    0x1a|0x80,      // W
+    0x1b|0x80,      // X
+    0x1c|0x80,      // Y
+    0x1d|0x80,      // Z
+    0x2f,          // [
+    0x31,          // bslash
+    0x30,          // ]
+    0x23|0x80,    // ^
+    0x2d|0x80,    // _
+    0x35,          // `
+    0x04,          // a
+    0x05,          // b
+    0x06,          // c
+    0x07,          // d
+    0x08,          // e
+    0x09,          // f
+    0x0a,          // g
+    0x0b,          // h
+    0x0c,          // i
+    0x0d,          // j
+    0x0e,          // k
+    0x0f,          // l
+    0x10,          // m
+    0x11,          // n
+    0x12,          // o
+    0x13,          // p
+    0x14,          // q
+    0x15,          // r
+    0x16,          // s
+    0x17,          // t
+    0x18,          // u
+    0x19,          // v
+    0x1a,          // w
+    0x1b,          // x
+    0x1c,          // y
+    0x1d,          // z
+    0x2f|0x80,    // {
+    0x31|0x80,    // |
+    0x30|0x80,    // }
+    0x35|0x80,    // ~
+    0               // DEL
+};
+
+
+void sendChar(uint8_t ch){
+    if( ch > 128 ) ch -=128;
+
+    key.id = 1;
+    key.keycode[0]=_asciimap[ch]&0x7F;
+    key.keycode[1]=0;
+
+    if ( _asciimap[ch] & 0x80) key.modifier |= 0x02;
+
+    for(int i=0; i< 4;i++){
+        USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t *)&key, sizeof(key));
+        HAL_Delay(10);
+    }
+    memset(key.keycode, 0 , sizeof(key.keycode));
+    key.modifier = 0;
+    USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t *)&key, sizeof(key));
+    HAL_Delay(10);
+}
+
+void sendCharWrong(uint8_t ch){
+    key.id = 1;
+    key.keycode[0]=ch&0x7F;
+    key.keycode[1]=0;
+
+    if ( _asciimap[ch] & 0x80) key.modifier |= 0x02;
+
+    for(int i=0; i< 4;i++){
+        USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t *)&key, sizeof(key));
+        HAL_Delay(10);
+    }
+    memset(key.keycode, 0 , sizeof(key.keycode));
+    key.modifier = 0;
+    USBD_HID_SendReport(&hUsbDeviceFS, (uint8_t *)&key, sizeof(key));
+    HAL_Delay(10);
+}
+
+void sendKeybits(uint8_t keybits){
+    uint8_t report[2];
+    report[0]= HID_MEDIA_REPORT;
+    report[1]= keybits;
+    USBD_HID_SendReport(&hUsbDeviceFS, report, 2);
+}
+
+void SystemClock_Config(void)
+{
+    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+    RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
+
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI14|RCC_OSCILLATORTYPE_HSI48;
+    RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
+    RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
+    RCC_OscInitStruct.HSI14CalibrationValue = 16;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+    HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+        |RCC_CLOCKTYPE_PCLK1;
+    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI48;
+    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);
+
+    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+    PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
+    HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
+
+}
+
+static void MX_GPIO_Init(void) {
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+
+    /* Left  encoder (SW2) A/B inputs: PA9/PA8 (TIM1 CH1/2)
+     * Right encoder (SW7) A/B inputs: PB4/PB5 (TIM3 CH1/2)
+     * Key matrix:  PB2  -> encoder switches left/right
+     *              PB8  -> SW3/8
+     *              PB1  -> SW4/9
+     *              PA15 -> SW5/10
+     *              PA0  -> SW6/11
+     *              key matrix inputs: PA1/PA4
+     *
+     * Physical key layout:
+     *
+     * +------------|USB|------------+
+     * | SW9     SW11    SW10    SW8 |
+     * |     SW2             SW7     |
+     * | SW4     SW6     SW5     SW3 |
+     * +-----------------------------+
+     *
+     * Logical key layout:
+     *
+     * +------------|USB|------------+
+     * |  KT1    KT2     KT3    KT4  |
+     * |      EL             ER      |
+     * |  KB1    KB2     KB3    KB4  |
+     * +-----------------------------+
+     *
+     */
+    GPIOA->MODER = 0x28000000 | (2<<(8*2)) | (2<<(9*2)) | (1<<(15*2))| (1<<(0*2));
+    GPIOB->MODER =              (2<<(4*2)) | (2<<(5*2)) | (1<<(1*2)) | (1<<(2*2)) | (1<<(8*2));
+    GPIOA->PUPDR = 0x24000000 | (1<<(8*2)) | (1<<(9*2)) | (2<<(1*2)) | (2<<(4*2));
+    GPIOB->PUPDR =              (1<<(4*2)) | (1<<(5*2));
+    GPIOA->AFR[1]=              0x00000022;
+    GPIOB->AFR[0]=              0x00110000;
+}
+
+static void key_matrix_select(int row) {
+    uint16_t bsrr_a = 0, bsrr_b = 0;
+    /* A0 -> A15 -> B1 -> B2 -> B8 */
+    switch (row) {
+        case 0: bsrr_a = 1<<0; break;
+        case 1: bsrr_a = 1<<15; break;
+        case 2: bsrr_b = 1<<1; break;
+        case 3: bsrr_b = 1<<2; break;
+        case 4: bsrr_b = 1<<8; break;
+    }
+    uint16_t mask_a = (1<<15) | (1<<0), mask_b = (1<<1) | (1<<2) | (1<<8);
+    /* Reset all pins except for selected pin */
+    GPIOA->BSRR = (mask_a<<16) ^ ((bsrr_a<<16) | bsrr_a) ;
+    GPIOB->BSRR = (mask_b<<16) ^ ((bsrr_b<<16) | bsrr_b) ;
+}
+
+static int key_matrix_query(int debounce_time) {
+    static int debounce_states[KEY_MATRIX_COLS][KEY_MATRIX_ROWS] = {0};
+    static int key_matrix_row = -1;
+    static uint32_t matrix_state = 0;
+    uint32_t matrix_state_edges = 0;
+    if (key_matrix_row < 0) { /* On first iteration just set outputs and return */
+        key_matrix_row = 0;
+        key_matrix_select(0);
+        return 0;
+    }
+
+    int input = GPIOA->IDR;
+    int pressed[KEY_MATRIX_COLS] = { input & (1<<4), input & (1<<1) };
+    for (int i=0; i<KEY_MATRIX_COLS; i++) {
+        if (debounce_states[i][key_matrix_row] > 0) {
+            /* debounce timer running */
+            debounce_states[i][key_matrix_row]--;
+        } else {
+            uint32_t bit = 1 << key_matrix_row << (KEY_MATRIX_ROWS * i); 
+            uint32_t old_matrix_state = matrix_state;
+            if (pressed[i])
+                matrix_state |= bit;
+            else
+                matrix_state &= ~bit;
+
+            uint32_t edge = old_matrix_state ^ matrix_state;
+            if (edge)
+                debounce_states[i][key_matrix_row] = debounce_time;
+            matrix_state_edges |= edge;
+        }
+    }
+
+    key_matrix_row = (key_matrix_row+1) % KEY_MATRIX_ROWS;
+    key_matrix_select(key_matrix_row);
+    return (matrix_state_edges<<16) | matrix_state;
+}
+
+void Error_Handler(void)
+{
+    while(1){
+        HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,1);
+        HAL_Delay(100);
+        HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,0);
+        HAL_Delay(100);
+    }
+}
+
diff --git a/fw/hid-dials/src/main.h b/fw/hid-dials/src/main.h
new file mode 100644
index 0000000..a80f8f4
--- /dev/null
+++ b/fw/hid-dials/src/main.h
@@ -0,0 +1,71 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : main.h
+  * @brief          : Header for main.c file.
+  *                   This file contains the common defines of the application.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx_hal.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void Error_Handler(void);
+
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+/* Private defines -----------------------------------------------------------*/
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/stm32f0xx_hal_conf.h b/fw/hid-dials/src/stm32f0xx_hal_conf.h
new file mode 100644
index 0000000..78c43f6
--- /dev/null
+++ b/fw/hid-dials/src/stm32f0xx_hal_conf.h
@@ -0,0 +1,319 @@
+/**
+  ******************************************************************************
+  * @file    stm32f0xx_hal_conf.h
+  * @brief   HAL configuration file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F0xx_HAL_CONF_H
+#define __STM32F0xx_HAL_CONF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+/**
+  * @brief This is the list of modules to be used in the HAL driver 
+  */
+#define HAL_MODULE_ENABLED  
+  #define HAL_ADC_MODULE_ENABLED
+/*#define HAL_CRYP_MODULE_ENABLED   */
+/*#define HAL_CAN_MODULE_ENABLED   */
+/*#define HAL_CEC_MODULE_ENABLED   */
+/*#define HAL_COMP_MODULE_ENABLED   */
+/*#define HAL_CRC_MODULE_ENABLED   */
+/*#define HAL_CRYP_MODULE_ENABLED   */
+/*#define HAL_TSC_MODULE_ENABLED   */
+/*#define HAL_DAC_MODULE_ENABLED   */
+/*#define HAL_I2S_MODULE_ENABLED   */
+/*#define HAL_IWDG_MODULE_ENABLED   */
+/*#define HAL_LCD_MODULE_ENABLED   */
+/*#define HAL_LPTIM_MODULE_ENABLED   */
+/*#define HAL_RNG_MODULE_ENABLED   */
+/*#define HAL_RTC_MODULE_ENABLED   */
+/*#define HAL_SPI_MODULE_ENABLED   */
+/*#define HAL_TIM_MODULE_ENABLED   */
+/*#define HAL_UART_MODULE_ENABLED   */
+/*#define HAL_USART_MODULE_ENABLED   */
+/*#define HAL_IRDA_MODULE_ENABLED   */
+/*#define HAL_SMARTCARD_MODULE_ENABLED   */
+/*#define HAL_SMBUS_MODULE_ENABLED   */
+/*#define HAL_WWDG_MODULE_ENABLED   */
+#define HAL_PCD_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_EXTI_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
+
+/* ########################## HSE/HSI Values adaptation ##################### */
+/**
+  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+  *        This value is used by the RCC HAL module to compute the system frequency
+  *        (when HSE is used as system clock source, directly or through the PLL).  
+  */
+#if !defined  (HSE_VALUE) 
+  #define HSE_VALUE    ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+/**
+  * @brief In the following line adjust the External High Speed oscillator (HSE) Startup 
+  *        Timeout value 
+  */
+#if !defined  (HSE_STARTUP_TIMEOUT)
+  #define HSE_STARTUP_TIMEOUT    ((uint32_t)100)   /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+  * @brief Internal High Speed oscillator (HSI) value.
+  *        This value is used by the RCC HAL module to compute the system frequency
+  *        (when HSI is used as system clock source, directly or through the PLL). 
+  */
+#if !defined  (HSI_VALUE)
+  #define HSI_VALUE    ((uint32_t)8000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+  * @brief In the following line adjust the Internal High Speed oscillator (HSI) Startup 
+  *        Timeout value 
+  */
+#if !defined  (HSI_STARTUP_TIMEOUT) 
+ #define HSI_STARTUP_TIMEOUT   ((uint32_t)5000) /*!< Time out for HSI start up */
+#endif /* HSI_STARTUP_TIMEOUT */  
+
+/**
+  * @brief Internal High Speed oscillator for ADC (HSI14) value.
+  */
+#if !defined  (HSI14_VALUE) 
+#define HSI14_VALUE ((uint32_t)14000000) /*!< Value of the Internal High Speed oscillator for ADC in Hz.
+                                             The real value may vary depending on the variations
+                                             in voltage and temperature.  */
+#endif /* HSI14_VALUE */
+
+/**
+  * @brief Internal High Speed oscillator for USB (HSI48) value.
+  */
+#if !defined  (HSI48_VALUE) 
+#define HSI48_VALUE ((uint32_t)48000000) /*!< Value of the Internal High Speed oscillator for USB in Hz.
+                                             The real value may vary depending on the variations
+                                             in voltage and temperature.  */
+#endif /* HSI48_VALUE */
+
+/**
+  * @brief Internal Low Speed oscillator (LSI) value.
+  */
+#if !defined  (LSI_VALUE) 
+ #define LSI_VALUE  ((uint32_t)40000)    
+#endif /* LSI_VALUE */                      /*!< Value of the Internal Low Speed oscillator in Hz
+                                             The real value may vary depending on the variations
+                                             in voltage and temperature.  */
+/**
+  * @brief External Low Speed oscillator (LSI) value.
+  */
+#if !defined  (LSE_VALUE)
+ #define LSE_VALUE  ((uint32_t)32768)    /*!< Value of the External Low Speed oscillator in Hz */
+#endif /* LSE_VALUE */     
+
+#if !defined  (LSE_STARTUP_TIMEOUT)
+  #define LSE_STARTUP_TIMEOUT    ((uint32_t)5000)   /*!< Time out for LSE start up, in ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+   ===  you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+  * @brief This is the HAL system configuration section
+  */     
+#define  VDD_VALUE                    ((uint32_t)3300) /*!< Value of VDD in mv */           
+#define  TICK_INT_PRIORITY            ((uint32_t)0)    /*!< tick interrupt priority (lowest by default)  */            
+                                                                              /*  Warning: Must be set to higher priority for HAL_Delay()  */
+                                                                              /*  and HAL_GetTick() usage under interrupt context          */
+#define  USE_RTOS                     0     
+#define  PREFETCH_ENABLE              1              
+#define  INSTRUCTION_CACHE_ENABLE     0
+#define  DATA_CACHE_ENABLE            0
+#define  USE_SPI_CRC                     0U
+
+#define  USE_HAL_ADC_REGISTER_CALLBACKS         0U /* ADC register callback disabled       */
+#define  USE_HAL_CAN_REGISTER_CALLBACKS         0U /* CAN register callback disabled       */
+#define  USE_HAL_COMP_REGISTER_CALLBACKS        0U /* COMP register callback disabled      */
+#define  USE_HAL_CEC_REGISTER_CALLBACKS         0U /* CEC register callback disabled       */
+#define  USE_HAL_DAC_REGISTER_CALLBACKS         0U /* DAC register callback disabled       */
+#define  USE_HAL_I2C_REGISTER_CALLBACKS         0U /* I2C register callback disabled       */
+#define  USE_HAL_SMBUS_REGISTER_CALLBACKS       0U /* SMBUS register callback disabled     */
+#define  USE_HAL_UART_REGISTER_CALLBACKS        0U /* UART register callback disabled      */
+#define  USE_HAL_USART_REGISTER_CALLBACKS       0U /* USART register callback disabled     */
+#define  USE_HAL_IRDA_REGISTER_CALLBACKS        0U /* IRDA register callback disabled      */
+#define  USE_HAL_SMARTCARD_REGISTER_CALLBACKS   0U /* SMARTCARD register callback disabled */
+#define  USE_HAL_WWDG_REGISTER_CALLBACKS        0U /* WWDG register callback disabled      */
+#define  USE_HAL_RTC_REGISTER_CALLBACKS         0U /* RTC register callback disabled       */
+#define  USE_HAL_SPI_REGISTER_CALLBACKS         0U /* SPI register callback disabled       */
+#define  USE_HAL_I2S_REGISTER_CALLBACKS         0U /* I2S register callback disabled       */
+#define  USE_HAL_TIM_REGISTER_CALLBACKS         0U /* TIM register callback disabled       */
+#define  USE_HAL_TSC_REGISTER_CALLBACKS         0U /* TSC register callback disabled       */
+#define  USE_HAL_PCD_REGISTER_CALLBACKS         0U /* PCD register callback disabled       */
+
+/* ########################## Assert Selection ############################## */
+/**
+  * @brief Uncomment the line below to expanse the "assert_param" macro in the 
+  *        HAL drivers code
+  */
+/* #define USE_FULL_ASSERT   1U */
+
+/* Includes ------------------------------------------------------------------*/
+/**
+  * @brief Include module's header file 
+  */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+ #include "stm32f0xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+ #include "stm32f0xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+  #include "stm32f0xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+  #include "stm32f0xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+ #include "stm32f0xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+ #include "stm32f0xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+ #include "stm32f0xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+ #include "stm32f0xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_COMP_MODULE_ENABLED
+ #include "stm32f0xx_hal_comp.h"
+#endif /* HAL_COMP_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+ #include "stm32f0xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+ #include "stm32f0xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+ #include "stm32f0xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+ #include "stm32f0xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+ #include "stm32f0xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+ #include "stm32f0xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+ #include "stm32f0xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+ #include "stm32f0xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+ #include "stm32f0xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+ #include "stm32f0xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+ #include "stm32f0xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_SMBUS_MODULE_ENABLED
+ #include "stm32f0xx_hal_smbus.h"
+#endif /* HAL_SMBUS_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+ #include "stm32f0xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+ #include "stm32f0xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_TSC_MODULE_ENABLED
+ #include "stm32f0xx_hal_tsc.h"
+#endif /* HAL_TSC_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+ #include "stm32f0xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+ #include "stm32f0xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+ #include "stm32f0xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  The assert_param macro is used for function's parameters check.
+  * @param  expr If expr is false, it calls assert_failed function
+  *         which reports the name of the source file and the source
+  *         line number of the call that failed. 
+  *         If expr is true, it returns no value.
+  * @retval None
+  */
+  #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+  void assert_failed(uint8_t* file, uint32_t line);
+#else
+  #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */    
+    
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F0xx_HAL_CONF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/stm32f0xx_hal_msp.c b/fw/hid-dials/src/stm32f0xx_hal_msp.c
new file mode 100644
index 0000000..8695580
--- /dev/null
+++ b/fw/hid-dials/src/stm32f0xx_hal_msp.c
@@ -0,0 +1,191 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * File Name          : stm32f0xx_hal_msp.c
+  * Description        : This file provides code for the MSP Initialization
+  *                      and de-Initialization codes.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+extern DMA_HandleTypeDef hdma_adc;
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN Define */
+
+/* USER CODE END Define */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN Macro */
+
+/* USER CODE END Macro */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* External functions --------------------------------------------------------*/
+/* USER CODE BEGIN ExternalFunctions */
+
+/* USER CODE END ExternalFunctions */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+/**
+  * Initializes the Global MSP.
+  */
+void HAL_MspInit(void)
+{
+  /* USER CODE BEGIN MspInit 0 */
+
+  /* USER CODE END MspInit 0 */
+
+  __HAL_RCC_SYSCFG_CLK_ENABLE();
+  __HAL_RCC_PWR_CLK_ENABLE();
+
+  /* System interrupt init*/
+
+  /* USER CODE BEGIN MspInit 1 */
+
+  /* USER CODE END MspInit 1 */
+}
+
+/**
+* @brief ADC MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hadc: ADC handle pointer
+* @retval None
+*/
+void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hadc->Instance==ADC1)
+  {
+  /* USER CODE BEGIN ADC1_MspInit 0 */
+
+  /* USER CODE END ADC1_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_ADC1_CLK_ENABLE();
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**ADC GPIO Configuration
+    PA0     ------> ADC_IN0
+    PA1     ------> ADC_IN1
+    PA2     ------> ADC_IN2
+    PA3     ------> ADC_IN3
+    PA4     ------> ADC_IN4
+    PA5     ------> ADC_IN5
+    PA6     ------> ADC_IN6
+    PA7     ------> ADC_IN7
+    PB0     ------> ADC_IN8
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
+                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7;
+    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_0;
+    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+    /* ADC1 DMA Init */
+    /* ADC Init */
+    hdma_adc.Instance = DMA1_Channel1;
+    hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
+    hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_adc.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+    hdma_adc.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+    hdma_adc.Init.Mode = DMA_CIRCULAR;
+    hdma_adc.Init.Priority = DMA_PRIORITY_MEDIUM;
+    if (HAL_DMA_Init(&hdma_adc) != HAL_OK)
+    {
+      Error_Handler();
+    }
+
+    __HAL_LINKDMA(hadc,DMA_Handle,hdma_adc);
+
+  /* USER CODE BEGIN ADC1_MspInit 1 */
+
+  /* USER CODE END ADC1_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief ADC MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hadc: ADC handle pointer
+* @retval None
+*/
+void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
+{
+  if(hadc->Instance==ADC1)
+  {
+  /* USER CODE BEGIN ADC1_MspDeInit 0 */
+
+  /* USER CODE END ADC1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_ADC1_CLK_DISABLE();
+
+    /**ADC GPIO Configuration
+    PA0     ------> ADC_IN0
+    PA1     ------> ADC_IN1
+    PA2     ------> ADC_IN2
+    PA3     ------> ADC_IN3
+    PA4     ------> ADC_IN4
+    PA5     ------> ADC_IN5
+    PA6     ------> ADC_IN6
+    PA7     ------> ADC_IN7
+    PB0     ------> ADC_IN8
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
+                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
+
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_0);
+
+    /* ADC1 DMA DeInit */
+    HAL_DMA_DeInit(hadc->DMA_Handle);
+  /* USER CODE BEGIN ADC1_MspDeInit 1 */
+
+  /* USER CODE END ADC1_MspDeInit 1 */
+  }
+
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/stm32f0xx_it.c b/fw/hid-dials/src/stm32f0xx_it.c
new file mode 100644
index 0000000..3d94908
--- /dev/null
+++ b/fw/hid-dials/src/stm32f0xx_it.c
@@ -0,0 +1,176 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32f0xx_it.c
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32f0xx_it.h"
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* External variables --------------------------------------------------------*/
+extern DMA_HandleTypeDef hdma_adc;
+extern PCD_HandleTypeDef hpcd_USB_FS;
+
+/* USER CODE BEGIN EV */
+
+/* USER CODE END EV */
+
+/******************************************************************************/
+/*           Cortex-M0 Processor Interruption and Exception Handlers          */
+/******************************************************************************/
+/**
+  * @brief This function handles Non maskable interrupt.
+  */
+void NMI_Handler(void)
+{
+  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
+
+  /* USER CODE END NonMaskableInt_IRQn 0 */
+  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
+
+  /* USER CODE END NonMaskableInt_IRQn 1 */
+}
+
+/**
+  * @brief This function handles Hard fault interrupt.
+  */
+void HardFault_Handler(void)
+{
+  /* USER CODE BEGIN HardFault_IRQn 0 */
+
+  /* USER CODE END HardFault_IRQn 0 */
+  while (1)
+  {
+    /* USER CODE BEGIN W1_HardFault_IRQn 0 */
+    /* USER CODE END W1_HardFault_IRQn 0 */
+  }
+}
+
+/**
+  * @brief This function handles System service call via SWI instruction.
+  */
+void SVC_Handler(void)
+{
+  /* USER CODE BEGIN SVC_IRQn 0 */
+
+  /* USER CODE END SVC_IRQn 0 */
+  /* USER CODE BEGIN SVC_IRQn 1 */
+
+  /* USER CODE END SVC_IRQn 1 */
+}
+
+/**
+  * @brief This function handles Pendable request for system service.
+  */
+void PendSV_Handler(void)
+{
+  /* USER CODE BEGIN PendSV_IRQn 0 */
+
+  /* USER CODE END PendSV_IRQn 0 */
+  /* USER CODE BEGIN PendSV_IRQn 1 */
+
+  /* USER CODE END PendSV_IRQn 1 */
+}
+
+/**
+  * @brief This function handles System tick timer.
+  */
+void SysTick_Handler(void)
+{
+  /* USER CODE BEGIN SysTick_IRQn 0 */
+
+  /* USER CODE END SysTick_IRQn 0 */
+  HAL_IncTick();
+  /* USER CODE BEGIN SysTick_IRQn 1 */
+
+  /* USER CODE END SysTick_IRQn 1 */
+}
+
+/******************************************************************************/
+/* STM32F0xx Peripheral Interrupt Handlers                                    */
+/* Add here the Interrupt Handlers for the used peripherals.                  */
+/* For the available peripheral interrupt handler names,                      */
+/* please refer to the startup file (startup_stm32f0xx.s).                    */
+/******************************************************************************/
+
+/**
+  * @brief This function handles DMA1 channel 1 global interrupt.
+  */
+void DMA1_Channel1_IRQHandler(void)
+{
+  /* USER CODE BEGIN DMA1_Channel1_IRQn 0 */
+
+  /* USER CODE END DMA1_Channel1_IRQn 0 */
+  HAL_DMA_IRQHandler(&hdma_adc);
+  /* USER CODE BEGIN DMA1_Channel1_IRQn 1 */
+
+  /* USER CODE END DMA1_Channel1_IRQn 1 */
+}
+
+/**
+* @brief This function handles USB global Interrupt / USB wake-up interrupt through EXTI line 18.
+*/
+void USB_IRQHandler(void)
+{
+  /* USER CODE BEGIN USB_IRQn 0 */
+
+  /* USER CODE END USB_IRQn 0 */
+  HAL_PCD_IRQHandler(&hpcd_USB_FS);
+  /* USER CODE BEGIN USB_IRQn 1 */
+
+  /* USER CODE END USB_IRQn 1 */
+}
+
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/stm32f0xx_it.h b/fw/hid-dials/src/stm32f0xx_it.h
new file mode 100644
index 0000000..daef239
--- /dev/null
+++ b/fw/hid-dials/src/stm32f0xx_it.h
@@ -0,0 +1,68 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    stm32f0xx_it.h
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+ ******************************************************************************
+  */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F0xx_IT_H
+#define __STM32F0xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void SVC_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+void DMA1_Channel1_IRQHandler(void);
+void USB_IRQHandler(void);
+
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F0xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/system_stm32f0xx.c b/fw/hid-dials/src/system_stm32f0xx.c
new file mode 100644
index 0000000..6a3202b
--- /dev/null
+++ b/fw/hid-dials/src/system_stm32f0xx.c
@@ -0,0 +1,265 @@
+/**
+  ******************************************************************************
+  * @file    system_stm32f0xx.c
+  * @author  MCD Application Team
+  * @brief   CMSIS Cortex-M0 Device Peripheral Access Layer System Source File.
+  *
+  * 1. This file provides two functions and one global variable to be called from
+  *    user application:
+  *      - SystemInit(): This function is called at startup just after reset and 
+  *                      before branch to main program. This call is made inside
+  *                      the "startup_stm32f0xx.s" file.
+  *
+  *      - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+  *                                  by the user application to setup the SysTick
+  *                                  timer or configure other parameters.
+  *
+  *      - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+  *                                 be called whenever the core clock is changed
+  *                                 during program execution.
+  *
+  * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+  *    Then SystemInit() function is called, in "startup_stm32f0xx.s" file, to
+  *    configure the system clock before to branch to main program.
+  *
+  * 3. This file configures the system clock as follows:
+  *=============================================================================
+  *                         Supported STM32F0xx device
+  *-----------------------------------------------------------------------------
+  *        System Clock source                    | HSI
+  *-----------------------------------------------------------------------------
+  *        SYSCLK(Hz)                             | 8000000
+  *-----------------------------------------------------------------------------
+  *        HCLK(Hz)                               | 8000000
+  *-----------------------------------------------------------------------------
+  *        AHB Prescaler                          | 1
+  *-----------------------------------------------------------------------------
+  *        APB1 Prescaler                         | 1
+  *-----------------------------------------------------------------------------
+  *=============================================================================
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/** @addtogroup CMSIS
+  * @{
+  */
+
+/** @addtogroup stm32f0xx_system
+  * @{
+  */
+
+/** @addtogroup STM32F0xx_System_Private_Includes
+  * @{
+  */
+
+#include "stm32f0xx.h"
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_TypesDefinitions
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_Defines
+  * @{
+  */
+#if !defined  (HSE_VALUE) 
+  #define HSE_VALUE    ((uint32_t)8000000) /*!< Default value of the External oscillator in Hz.
+                                                This value can be provided and adapted by the user application. */
+#endif /* HSE_VALUE */
+
+#if !defined  (HSI_VALUE)
+  #define HSI_VALUE    ((uint32_t)8000000) /*!< Default value of the Internal oscillator in Hz.
+                                                This value can be provided and adapted by the user application. */
+#endif /* HSI_VALUE */
+
+#if !defined (HSI48_VALUE)
+#define HSI48_VALUE    ((uint32_t)48000000) /*!< Default value of the HSI48 Internal oscillator in Hz.
+                                                 This value can be provided and adapted by the user application. */
+#endif /* HSI48_VALUE */
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_Macros
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_Variables
+  * @{
+  */
+  /* This variable is updated in three ways:
+      1) by calling CMSIS function SystemCoreClockUpdate()
+      2) by calling HAL API function HAL_RCC_GetHCLKFreq()
+      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
+         Note: If you use this function to configure the system clock there is no need to
+               call the 2 first functions listed above, since SystemCoreClock variable is 
+               updated automatically.
+  */
+uint32_t SystemCoreClock = 8000000;
+
+const uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+const uint8_t APBPrescTable[8]  = {0, 0, 0, 0, 1, 2, 3, 4};
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_FunctionPrototypes
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32F0xx_System_Private_Functions
+  * @{
+  */
+
+/**
+  * @brief  Setup the microcontroller system.
+  * @param  None
+  * @retval None
+  */
+void SystemInit(void)
+{
+  /* NOTE :SystemInit(): This function is called at startup just after reset and 
+                         before branch to main program. This call is made inside
+                         the "startup_stm32f0xx.s" file.
+                         User can setups the default system clock (System clock source, PLL Multiplier
+                         and Divider factors, AHB/APBx prescalers and Flash settings).
+   */
+}
+
+/**
+   * @brief  Update SystemCoreClock variable according to Clock Register Values.
+  *         The SystemCoreClock variable contains the core clock (HCLK), it can
+  *         be used by the user application to setup the SysTick timer or configure
+  *         other parameters.
+  *
+  * @note   Each time the core clock (HCLK) changes, this function must be called
+  *         to update SystemCoreClock variable value. Otherwise, any configuration
+  *         based on this variable will be incorrect.
+  *
+  * @note   - The system frequency computed by this function is not the real
+  *           frequency in the chip. It is calculated based on the predefined
+  *           constant and the selected clock source:
+  *
+  *           - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+  *
+  *           - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+  *
+  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+  *             or HSI_VALUE(*) multiplied/divided by the PLL factors.
+  *
+  *         (*) HSI_VALUE is a constant defined in stm32f0xx_hal.h file (default value
+  *             8 MHz) but the real value may vary depending on the variations
+  *             in voltage and temperature.
+  *
+  *         (**) HSE_VALUE is a constant defined in stm32f0xx_hal.h file (default value
+  *              8 MHz), user has to ensure that HSE_VALUE is same as the real
+  *              frequency of the crystal used. Otherwise, this function may
+  *              have wrong result.
+  *
+  *         - The result of this function could be not correct when using fractional
+  *           value for HSE crystal.
+  *
+  * @param  None
+  * @retval None
+  */
+void SystemCoreClockUpdate (void)
+{
+  uint32_t tmp = 0, pllmull = 0, pllsource = 0, predivfactor = 0;
+
+  /* Get SYSCLK source -------------------------------------------------------*/
+  tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+  switch (tmp)
+  {
+    case RCC_CFGR_SWS_HSI:  /* HSI used as system clock */
+      SystemCoreClock = HSI_VALUE;
+      break;
+    case RCC_CFGR_SWS_HSE:  /* HSE used as system clock */
+      SystemCoreClock = HSE_VALUE;
+      break;
+    case RCC_CFGR_SWS_PLL:  /* PLL used as system clock */
+      /* Get PLL clock source and multiplication factor ----------------------*/
+      pllmull = RCC->CFGR & RCC_CFGR_PLLMUL;
+      pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+      pllmull = ( pllmull >> 18) + 2;
+      predivfactor = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1;
+
+      if (pllsource == RCC_CFGR_PLLSRC_HSE_PREDIV)
+      {
+        /* HSE used as PLL clock source : SystemCoreClock = HSE/PREDIV * PLLMUL */
+        SystemCoreClock = (HSE_VALUE/predivfactor) * pllmull;
+      }
+#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || defined(STM32F091xC) || defined(STM32F098xx)
+      else if (pllsource == RCC_CFGR_PLLSRC_HSI48_PREDIV)
+      {
+        /* HSI48 used as PLL clock source : SystemCoreClock = HSI48/PREDIV * PLLMUL */
+        SystemCoreClock = (HSI48_VALUE/predivfactor) * pllmull;
+      }
+#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || STM32F091xC || STM32F098xx */
+      else
+      {
+#if defined(STM32F042x6) || defined(STM32F048xx)  || defined(STM32F070x6) \
+ || defined(STM32F078xx) || defined(STM32F071xB)  || defined(STM32F072xB) \
+ || defined(STM32F070xB) || defined(STM32F091xC) || defined(STM32F098xx)  || defined(STM32F030xC)
+        /* HSI used as PLL clock source : SystemCoreClock = HSI/PREDIV * PLLMUL */
+        SystemCoreClock = (HSI_VALUE/predivfactor) * pllmull;
+#else
+        /* HSI used as PLL clock source : SystemCoreClock = HSI/2 * PLLMUL */
+        SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
+#endif /* STM32F042x6 || STM32F048xx || STM32F070x6 || 
+          STM32F071xB || STM32F072xB || STM32F078xx || STM32F070xB ||
+          STM32F091xC || STM32F098xx || STM32F030xC */
+      }
+      break;
+    default: /* HSI used as system clock */
+      SystemCoreClock = HSI_VALUE;
+      break;
+  }
+  /* Compute HCLK clock frequency ----------------*/
+  /* Get HCLK prescaler */
+  tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4)];
+  /* HCLK clock frequency */
+  SystemCoreClock >>= tmp;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/fw/hid-dials/src/usb_device.c b/fw/hid-dials/src/usb_device.c
new file mode 100644
index 0000000..dc6a44f
--- /dev/null
+++ b/fw/hid-dials/src/usb_device.c
@@ -0,0 +1,107 @@
+/**
+  ******************************************************************************
+  * @file           : usb_device.c
+  * @version        : v2.0_Cube
+  * @brief          : This file implements the USB Device
+  ******************************************************************************
+  * This notice applies to any and all portions of this file
+  * that are not between comment pairs USER CODE BEGIN and
+  * USER CODE END. Other portions of this file, whether
+  * inserted by the user or by software development tools
+  * are owned by their respective copyright owners.
+  *
+  * Copyright (c) 2018 STMicroelectronics International N.V.
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_device.h"
+#include "usbd_core.h"
+#include "usbd_desc.h"
+
+/* USER CODE BEGIN Includes */
+#include "usbd_hid.h"
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* USB Device Core handle declaration. */
+USBD_HandleTypeDef hUsbDeviceFS;
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*
+ * -- Insert your external function declaration here --
+ */
+/* USER CODE BEGIN 1 */
+
+void MX_USB_HID_INIT(void)
+{
+  USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);
+
+  USBD_RegisterClass(&hUsbDeviceFS, &USBD_HID);
+
+  USBD_Start(&hUsbDeviceFS);
+}
+
+/* USER CODE END 1 */
+
+
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/usb_device.h b/fw/hid-dials/src/usb_device.h
new file mode 100644
index 0000000..5437462
--- /dev/null
+++ b/fw/hid-dials/src/usb_device.h
@@ -0,0 +1,115 @@
+/**
+  ******************************************************************************
+  * @file           : usb_device.h
+  * @version        : v2.0_Cube
+  * @brief          : Header for usb_device.c file.
+  ******************************************************************************
+  * This notice applies to any and all portions of this file
+  * that are not between comment pairs USER CODE BEGIN and
+  * USER CODE END. Other portions of this file, whether
+  * inserted by the user or by software development tools
+  * are owned by their respective copyright owners.
+  *
+  * Copyright (c) 2018 STMicroelectronics International N.V.
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_DEVICE__H__
+#define __USB_DEVICE__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f0xx.h"
+#include "stm32f0xx_hal.h"
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+extern void MX_USB_HID_INIT(void);
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBD_OTG_DRIVER
+  * @{
+  */
+
+/** @defgroup USBD_DEVICE USBD_DEVICE
+  * @brief Device file for Usb otg low level driver.
+  * @{
+  */
+
+/** @defgroup USBD_DEVICE_Exported_Variables USBD_DEVICE_Exported_Variables
+  * @brief Public variables.
+  * @{
+  */
+
+/** USB device core handle. */
+extern USBD_HandleTypeDef hUsbDeviceFS;
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DEVICE_Exported_FunctionsPrototype USBD_DEVICE_Exported_FunctionsPrototype
+  * @brief Declaration of public functions for Usb device.
+  * @{
+  */
+
+/** USB Device initialization function. */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_DEVICE__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/usbd_conf.c b/fw/hid-dials/src/usbd_conf.c
new file mode 100644
index 0000000..ccc4b16
--- /dev/null
+++ b/fw/hid-dials/src/usbd_conf.c
@@ -0,0 +1,576 @@
+#include "stm32f0xx.h"
+#include "stm32f0xx_hal.h"
+#include "usbd_def.h"
+#include "usbd_core.h"
+
+
+PCD_HandleTypeDef hpcd_USB_FS;
+
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+
+void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
+{
+    __HAL_RCC_USB_CLK_ENABLE();
+
+    HAL_NVIC_SetPriority(USB_IRQn, 1, 0);
+    HAL_NVIC_EnableIRQ(USB_IRQn);
+}
+
+void HAL_PCD_MspDeInit(PCD_HandleTypeDef* pcdHandle)
+{
+    __HAL_RCC_USB_CLK_DISABLE();
+
+    HAL_NVIC_DisableIRQ(USB_IRQn);
+}
+
+void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+{
+    USBD_LL_SetupStage((USBD_HandleTypeDef*)hpcd->pData, (uint8_t *)hpcd->Setup);
+}
+
+void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+    USBD_LL_DataOutStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
+}
+
+void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+    USBD_LL_DataInStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
+}
+
+void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+{
+    USBD_LL_SOF((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+{
+    USBD_SpeedTypeDef speed = USBD_SPEED_FULL;
+
+    /* Set USB current speed. */
+    switch (hpcd->Init.speed)
+    {
+        case PCD_SPEED_FULL:
+            speed = USBD_SPEED_FULL;
+            break;
+
+        default:
+            speed = USBD_SPEED_FULL;
+            break;
+    }
+    USBD_LL_SetSpeed((USBD_HandleTypeDef*)hpcd->pData, speed);
+
+    /* Reset Device. */
+    USBD_LL_Reset((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief  Suspend callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param  hpcd: PCD handle
+ * @retval None
+ */
+void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+{
+    /* Inform USB library that core enters in suspend Mode. */
+    USBD_LL_Suspend((USBD_HandleTypeDef*)hpcd->pData);
+    /* Enter in STOP mode. */
+    /* USER CODE BEGIN 2 */
+    if (hpcd->Init.low_power_enable)
+    {
+        /* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register. */
+        SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
+    }
+    /* USER CODE END 2 */
+}
+
+/**
+ * @brief  Resume callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param  hpcd: PCD handle
+ * @retval None
+ */
+void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+{
+    /* USER CODE BEGIN 3 */
+
+    /* USER CODE END 3 */
+    USBD_LL_Resume((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief  ISOOUTIncomplete callback.
+ * @param  hpcd: PCD handle
+ * @param  epnum: Endpoint number
+ * @retval None
+ */
+void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+    USBD_LL_IsoOUTIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief  ISOINIncomplete callback.
+ * @param  hpcd: PCD handle
+ * @param  epnum: Endpoint number
+ * @retval None
+ */
+void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+{
+    USBD_LL_IsoINIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief  Connect callback.
+ * @param  hpcd: PCD handle
+ * @retval None
+ */
+void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+{
+    USBD_LL_DevConnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief  Disconnect callback.
+ * @param  hpcd: PCD handle
+ * @retval None
+ */
+void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+{
+    USBD_LL_DevDisconnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/*******************************************************************************
+  LL Driver Interface (USB Device Library --> PCD)
+ *******************************************************************************/
+
+/**
+ * @brief  Initializes the low level portion of the device driver.
+ * @param  pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev)
+{
+    /* Init USB Ip. */
+    /* Link the driver to the stack. */
+    hpcd_USB_FS.pData = pdev;
+    pdev->pData = &hpcd_USB_FS;
+
+    hpcd_USB_FS.Instance = USB;
+    hpcd_USB_FS.Init.dev_endpoints = 8;
+    hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
+    hpcd_USB_FS.Init.ep0_mps = EP_MPS_64;
+    hpcd_USB_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
+    hpcd_USB_FS.Init.low_power_enable = DISABLE;
+    hpcd_USB_FS.Init.lpm_enable = DISABLE;
+    hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
+    if (HAL_PCD_Init(&hpcd_USB_FS) != HAL_OK)
+    {
+        //_Error_Handler(__FILE__, __LINE__);
+    }
+
+    HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
+    HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
+    HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x81 , PCD_SNG_BUF, 0xC0);
+    HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x01 , PCD_SNG_BUF, 0x110);
+    HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x82 , PCD_SNG_BUF, 0x100);
+    return USBD_OK;
+}
+
+/**
+ * @brief  De-Initializes the low level portion of the device driver.
+ * @param  pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_DeInit(USBD_HandleTypeDef *pdev)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_DeInit(pdev->pData);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Starts the low level portion of the device driver.
+ * @param  pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Start(USBD_HandleTypeDef *pdev)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_Start(pdev->pData);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Stops the low level portion of the device driver.
+ * @param  pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Stop(USBD_HandleTypeDef *pdev)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_Stop(pdev->pData);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Opens an endpoint of the low level driver.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @param  ep_type: Endpoint type
+ * @param  ep_mps: Endpoint max packet size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_OpenEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t ep_type, uint16_t ep_mps)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_Open(pdev->pData, ep_addr, ep_mps, ep_type);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Closes an endpoint of the low level driver.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_CloseEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_Close(pdev->pData, ep_addr);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Flushes an endpoint of the Low Level Driver.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_FlushEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_Flush(pdev->pData, ep_addr);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Sets a Stall condition on an endpoint of the Low Level Driver.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_StallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Clears a Stall condition on an endpoint of the Low Level Driver.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_ClearStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Returns Stall condition.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @retval Stall (1: Yes, 0: No)
+ */
+uint8_t USBD_LL_IsStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    PCD_HandleTypeDef *hpcd = (PCD_HandleTypeDef*) pdev->pData;
+
+    if((ep_addr & 0x80) == 0x80)
+    {
+        return hpcd->IN_ep[ep_addr & 0x7F].is_stall;
+    }
+    else
+    {
+        return hpcd->OUT_ep[ep_addr & 0x7F].is_stall;
+    }
+}
+
+/**
+ * @brief  Assigns a USB address to the device.
+ * @param  pdev: Device handle
+ * @param  dev_addr: Device address
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_SetUSBAddress(USBD_HandleTypeDef *pdev, uint8_t dev_addr)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_SetAddress(pdev->pData, dev_addr);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Transmits data over an endpoint.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @param  pbuf: Pointer to data to be sent
+ * @param  size: Data size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Transmit(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint32_t size)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+/**
+ * @brief  Prepares an endpoint for reception.
+ * @param  pdev: Device handle
+ * @param  ep_addr: Endpoint number
+ * @param  pbuf: Pointer to data to be received
+ * @param  size: Data size
+ * @retval USBD status
+ */
+
+USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint32_t size)
+{
+    HAL_StatusTypeDef hal_status = HAL_OK;
+    USBD_StatusTypeDef usb_status = USBD_OK;
+
+    hal_status = HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
+
+    switch (hal_status) {
+        case HAL_OK :
+            usb_status = USBD_OK;
+            break;
+        case HAL_ERROR :
+            usb_status = USBD_FAIL;
+            break;
+        case HAL_BUSY :
+            usb_status = USBD_BUSY;
+            break;
+        case HAL_TIMEOUT :
+            usb_status = USBD_FAIL;
+            break;
+        default :
+            usb_status = USBD_FAIL;
+            break;
+    }
+    return usb_status;
+}
+
+uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+    return HAL_PCD_EP_GetRxCount((PCD_HandleTypeDef*) pdev->pData, ep_addr);
+}
+
+void USBD_LL_Delay(uint32_t Delay /* ms */)
+{
+    HAL_Delay(Delay);
+}
+
diff --git a/fw/hid-dials/src/usbd_conf.h b/fw/hid-dials/src/usbd_conf.h
new file mode 100644
index 0000000..c194c70
--- /dev/null
+++ b/fw/hid-dials/src/usbd_conf.h
@@ -0,0 +1,82 @@
+#ifndef __USBD_CONF__H__
+#define __USBD_CONF__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "stm32f0xx.h"
+#include "stm32f0xx_hal.h"
+
+#define USBD_MAX_NUM_INTERFACES     1
+#define USBD_MAX_NUM_CONFIGURATION  1
+#define USBD_MAX_STR_DESC_SIZ       512
+#define USBD_SUPPORT_USER_STRING    0
+#define USBD_DEBUG_LEVEL            0
+#define USBD_SELF_POWERED           1
+#define MAX_STATIC_ALLOC_SIZE       512
+
+/****************************************/
+/* #define for FS and HS identification */
+#define DEVICE_FS 		0
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_CONF_Exported_Macros USBD_CONF_Exported_Macros
+  * @brief Aliases.
+  * @{
+  */
+
+/* Memory management macros */
+
+/** Alias for memory allocation. */
+#define USBD_malloc         malloc
+//(uint32_t *)USBD_static_malloc
+
+/** Alias for memory release. */
+#define USBD_free           free
+
+/** Alias for memory set. */
+#define USBD_memset         /* Not used */
+
+/** Alias for memory copy. */
+#define USBD_memcpy         /* Not used */
+
+/** Alias for delay. */
+#define USBD_Delay          HAL_Delay
+
+/* DEBUG macros */
+
+#if (USBD_DEBUG_LEVEL > 0)
+#define USBD_UsrLog(...)    printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_UsrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 1)
+
+#define USBD_ErrLog(...)    printf("ERROR: ") ;\
+                            printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_ErrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 2)
+#define USBD_DbgLog(...)    printf("DEBUG : ") ;\
+                            printf(__VA_ARGS__);\
+                            printf("\n");
+#else
+#define USBD_DbgLog(...)
+#endif
+
+/* Set unset defines */
+#include "usbd_def.h"
+
+#endif /* __USBD_CONF__H__ */
diff --git a/fw/hid-dials/src/usbd_desc.c b/fw/hid-dials/src/usbd_desc.c
new file mode 100644
index 0000000..bdcaca4
--- /dev/null
+++ b/fw/hid-dials/src/usbd_desc.c
@@ -0,0 +1,365 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_desc.c
+  * @version        : v2.0_Cube
+  * @brief          : This file implements the USB device descriptors.
+  ******************************************************************************
+  * This notice applies to any and all portions of this file
+  * that are not between comment pairs USER CODE BEGIN and
+  * USER CODE END. Other portions of this file, whether
+  * inserted by the user or by software development tools
+  * are owned by their respective copyright owners.
+  *
+  * Copyright (c) 2018 STMicroelectronics International N.V.
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_conf.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+
+/** @addtogroup USBD_DESC
+  * @{
+  */
+
+/** @defgroup USBD_DESC_Private_TypesDefinitions USBD_DESC_Private_TypesDefinitions
+  * @brief Private types.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_TYPES */
+
+/* USER CODE END PRIVATE_TYPES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Private_Defines USBD_DESC_Private_Defines
+  * @brief Private defines.
+  * @{
+  */
+
+/*
+ *************************************************[ATTENTION]************************************************
+ *
+ * VID 0x1209 and PID 0x0001 is experimental IDs from http://pid.codes .
+ * You must get your own IDs, and change to your own IDs in order to avoid conflicting to other USB devices.
+ *
+ ************************************************************************************************************
+*/
+
+#define USBD_VID     0x1209
+#define USBD_LANGID_STRING     1041
+#define USBD_MANUFACTURER_STRING     "jaseg.de"
+#define USBD_PID_FS     0x0002	// FIXME
+#define USBD_PRODUCT_STRING_FS     "MultiHID"
+#define USBD_SERIALNUMBER_STRING_FS     "000000000001"
+#define USBD_CONFIGURATION_STRING_FS     "HID Config"
+#define USBD_INTERFACE_STRING_FS     "HID Interface"
+
+
+
+/* USER CODE BEGIN PRIVATE_DEFINES */
+
+/* USER CODE END PRIVATE_DEFINES */
+
+/**
+  * @}
+  */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/** @defgroup USBD_DESC_Private_Macros USBD_DESC_Private_Macros
+  * @brief Private macros.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_MACRO */
+
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
+  * @brief Private functions declaration.
+  * @{
+  */
+
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+
+#ifdef USB_SUPPORT_USER_STRING_DESC
+uint8_t * USBD_FS_USRStringDesc(USBD_SpeedTypeDef speed, uint8_t idx, uint16_t *length);
+#endif /* USB_SUPPORT_USER_STRING_DESC */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+  * @brief Private variables.
+  * @{
+  */
+
+USBD_DescriptorsTypeDef FS_Desc =
+{
+  USBD_FS_DeviceDescriptor
+, USBD_FS_LangIDStrDescriptor
+, USBD_FS_ManufacturerStrDescriptor
+, USBD_FS_ProductStrDescriptor
+, USBD_FS_SerialStrDescriptor
+, USBD_FS_ConfigStrDescriptor
+, USBD_FS_InterfaceStrDescriptor
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+  #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/** USB standard device descriptor. */
+__ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
+{
+  0x12,                       /*bLength */
+  USB_DESC_TYPE_DEVICE,       /*bDescriptorType*/
+  0x00,                       /*bcdUSB */
+  0x02,
+  0x02,                       /*bDeviceClass*/
+  0x02,                       /*bDeviceSubClass*/
+  0x00,                       /*bDeviceProtocol*/
+  USB_MAX_EP0_SIZE,           /*bMaxPacketSize*/
+  LOBYTE(USBD_VID),           /*idVendor*/
+  HIBYTE(USBD_VID),           /*idVendor*/
+  LOBYTE(USBD_PID_FS),        /*idProduct*/
+  HIBYTE(USBD_PID_FS),        /*idProduct*/
+  0x00,                       /*bcdDevice rel. 2.00*/
+  0x02,
+  USBD_IDX_MFC_STR,           /*Index of manufacturer  string*/
+  USBD_IDX_PRODUCT_STR,       /*Index of product string*/
+  USBD_IDX_SERIAL_STR,        /*Index of serial number string*/
+  USBD_MAX_NUM_CONFIGURATION  /*bNumConfigurations*/
+};
+
+/* USB_DeviceDescriptor */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+  * @brief Private variables.
+  * @{
+  */
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+  #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+
+/** USB lang indentifier descriptor. */
+__ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
+{
+     USB_LEN_LANGID_STR_DESC,
+     USB_DESC_TYPE_STRING,
+     LOBYTE(USBD_LANGID_STRING),
+     HIBYTE(USBD_LANGID_STRING)
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+  #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/* Internal string descriptor. */
+__ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Private_Functions USBD_DESC_Private_Functions
+  * @brief Private functions.
+  * @{
+  */
+
+/**
+  * @brief  Return the device descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  *length = sizeof(USBD_FS_DeviceDesc);
+  return USBD_FS_DeviceDesc;
+}
+
+/**
+  * @brief  Return the LangID string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  *length = sizeof(USBD_LangIDDesc);
+  return USBD_LangIDDesc;
+}
+
+/**
+  * @brief  Return the product string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  if(speed == 0)
+  {
+    USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+  }
+  return USBD_StrDesc;
+}
+
+/**
+  * @brief  Return the manufacturer string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
+  return USBD_StrDesc;
+}
+
+/**
+  * @brief  Return the serial number string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  if(speed == USBD_SPEED_HIGH)
+  {
+    USBD_GetString((uint8_t *)USBD_SERIALNUMBER_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString((uint8_t *)USBD_SERIALNUMBER_STRING_FS, USBD_StrDesc, length);
+  }
+  return USBD_StrDesc;
+}
+
+/**
+  * @brief  Return the configuration string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  if(speed == USBD_SPEED_HIGH)
+  {
+    USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+  }
+  return USBD_StrDesc;
+}
+
+/**
+  * @brief  Return the interface string descriptor
+  * @param  speed : Current device speed
+  * @param  length : Pointer to data length variable
+  * @retval Pointer to descriptor buffer
+  */
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+  if(speed == 0)
+  {
+    USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+  }
+  else
+  {
+    USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+  }
+  return USBD_StrDesc;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/usbd_desc.h b/fw/hid-dials/src/usbd_desc.h
new file mode 100644
index 0000000..9abf0af
--- /dev/null
+++ b/fw/hid-dials/src/usbd_desc.h
@@ -0,0 +1,156 @@
+/**
+  ******************************************************************************
+  * @file           : usbd_desc.h
+  * @version        : v2.0_Cube
+  * @brief          : Header for usbd_desc.c file.
+  ******************************************************************************
+  * This notice applies to any and all portions of this file
+  * that are not between comment pairs USER CODE BEGIN and
+  * USER CODE END. Other portions of this file, whether 
+  * inserted by the user or by software development tools
+  * are owned by their respective copyright owners.
+  *
+  * Copyright (c) 2018 STMicroelectronics International N.V. 
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DESC__H__
+#define __USBD_DESC__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @{
+  */
+
+/** @defgroup USBD_DESC USBD_DESC
+  * @brief Usb device descriptors module.
+  * @{
+  */
+
+/** @defgroup USBD_DESC_Exported_Defines USBD_DESC_Exported_Defines
+  * @brief Defines.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Exported_TypesDefinitions USBD_DESC_Exported_TypesDefinitions
+  * @brief Types.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Exported_Macros USBD_DESC_Exported_Macros
+  * @brief Aliases.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Exported_Variables USBD_DESC_Exported_Variables
+  * @brief Public variables.
+  * @{
+  */
+
+/** Descriptor for the Usb device. */
+extern USBD_DescriptorsTypeDef FS_Desc;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_DESC_Exported_FunctionsPrototype USBD_DESC_Exported_FunctionsPrototype
+  * @brief Public functions declaration.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DESC__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/fw/hid-dials/src/usbd_hid.c b/fw/hid-dials/src/usbd_hid.c
new file mode 100644
index 0000000..4d313b4
--- /dev/null
+++ b/fw/hid-dials/src/usbd_hid.c
@@ -0,0 +1,373 @@
+#include "usbd_hid.h"
+#include "usbd_desc.h"
+#include "usbd_ctlreq.h"
+
+
+static uint8_t  USBD_HID_Init (USBD_HandleTypeDef *pdev, uint8_t cfgidx);
+static uint8_t  USBD_HID_DeInit (USBD_HandleTypeDef *pdev, uint8_t cfgidx);
+static uint8_t  USBD_HID_Setup (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
+static uint8_t  *USBD_HID_GetCfgDesc (uint16_t *length); 
+static uint8_t  *USBD_HID_GetDeviceQualifierDesc (uint16_t *length); 
+static uint8_t  USBD_HID_DataIn (USBD_HandleTypeDef *pdev, uint8_t epnum); 
+static uint8_t  USBD_HID_DataOut (USBD_HandleTypeDef *pdev, uint8_t epnum);
+
+USBD_ClassTypeDef  USBD_HID = 
+{
+    USBD_HID_Init,
+    USBD_HID_DeInit,
+    USBD_HID_Setup,
+    NULL, /* EP0_TxSent */  
+    NULL, /* EP0_RxReady */
+    USBD_HID_DataIn,
+    USBD_HID_DataOut,
+    NULL, /* SOF */
+    NULL,
+    NULL,      
+    USBD_HID_GetCfgDesc,
+    USBD_HID_GetCfgDesc, 
+    USBD_HID_GetCfgDesc,
+    USBD_HID_GetDeviceQualifierDesc,
+};
+
+/* USB HID device configuration descriptor */
+__ALIGN_BEGIN static uint8_t USBD_HID_CfgDesc[USB_HID_CONFIG_DESC_SIZ]  __ALIGN_END =
+{
+    0x09, /* bLength: Configuration Descriptor size */
+    USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
+    USB_HID_CONFIG_DESC_SIZ,
+    /* wTotalLength: Bytes returned */
+    0x00,
+    0x01,         /*bNumInterfaces: 1 interface*/
+    0x01,         /*bConfigurationValue: Configuration value*/
+    0x00,         /*iConfiguration: Index of string descriptor describing
+                    the configuration*/
+    0xE0,         /*bmAttributes: bus powered and Support Remote Wake-up */
+    0x32,         /*MaxPower 100 mA: this current is used for detecting Vbus*/
+
+    /* Interface descriptor */
+    /* 09 */
+    0x09,         /*bLength: Interface Descriptor size*/
+    USB_DESC_TYPE_INTERFACE,/*bDescriptorType: Interface descriptor type*/
+    0x00,         /*bInterfaceNumber: Number of Interface*/
+    0x00,         /*bAlternateSetting: Alternate setting*/
+    HID_NUM_EP,
+
+    0x03,         /*bInterfaceClass: HID*/
+
+    0x01,         /*bInterfaceSubClass : 1=BOOT, 0=no boot*/
+    0x01,         /*nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse*/
+    0,            /*iInterface: Index of string descriptor*/
+    /* HID descriptor */
+    /* 18 */
+    0x09,         /*bLength: HID Descriptor size*/
+    HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/
+    0x11,         /*bcdHID: HID Class Spec release number*/
+    0x01,
+    0x00,         /*bCountryCode: Hardware target country*/
+    0x01,         /*bNumDescriptors: Number of HID class descriptors to follow*/
+    0x22,         /*bDescriptorType*/
+    HID_REPORT_DESC_SIZE,/*wItemLength: Total length of Report descriptor*/
+    0x00,
+    /* HID endpoint descriptor */
+    /* 27 */
+    0x07,          /*bLength: Endpoint Descriptor size*/
+    USB_DESC_TYPE_ENDPOINT, /*bDescriptorType:*/
+
+    HID_EPIN_ADDR,     /*bEndpointAddress: Endpoint Address (IN)*/
+    0x03,          /*bmAttributes: Interrupt endpoint*/
+    HID_EPIN_SIZE, /*wMaxPacketSize: 4 Byte max */
+    0x00,
+    HID_FS_BINTERVAL,          /*bInterval: Polling Interval (10 ms)*/
+    /* 34 */
+#if   HID_LED_SUPPORT
+    0x07,          /*bLength: Endpoint Descriptor size*/
+    USB_DESC_TYPE_ENDPOINT, /*bDescriptorType:*/
+
+    HID_EPOUT_ADDR,     /*bEndpointAddress: Endpoint Address (IN)*/
+    0x03,          /*bmAttributes: Interrupt endpoint*/
+    HID_EPOUT_SIZE, /*wMaxPacketSize: 4 Byte max */
+    0x00,
+    HID_FS_BINTERVAL,          /*bInterval: Polling Interval (10 ms)*/
+#endif
+    /* 41 */
+
+} ;
+
+/* USB HID device Configuration Descriptor */
+__ALIGN_BEGIN static uint8_t USBD_HID_Desc[USB_HID_DESC_SIZ]  __ALIGN_END  =
+{
+    /* 18 */
+    0x09,         /*bLength: HID Descriptor size*/
+    HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/
+    0x11,         /*bcdHID: HID Class Spec release number*/
+    0x01,
+    0x00,         /*bCountryCode: Hardware target country*/
+    0x01,         /*bNumDescriptors: Number of HID class descriptors to follow*/
+    0x22,         /*bDescriptorType*/
+    HID_REPORT_DESC_SIZE,/*wItemLength: Total length of Report descriptor*/
+    0x00,
+};
+
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN static uint8_t USBD_HID_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC]  __ALIGN_END =
+{
+    USB_LEN_DEV_QUALIFIER_DESC,
+    USB_DESC_TYPE_DEVICE_QUALIFIER,
+    0x00,
+    0x02,
+    0x00,
+    0x00,
+    0x00,
+    0x40,
+    0x01,
+    0x00,
+};
+
+__ALIGN_BEGIN static uint8_t HID_ReportDesc[HID_REPORT_DESC_SIZE]  __ALIGN_END =
+{
+    0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
+    0x09, 0x06,                    // USAGE (Keyboard)
+    0xa1, 0x01,                    // COLLECTION (Application)
+    0x85, 0x01,  /*   Report ID  */
+    0x05, 0x07,                    //   USAGE_PAGE (Keyboard)
+    0x19, 0xe0,                    //   USAGE_MINIMUM (Keyboard LeftControl)
+    0x29, 0xe7,                    //   USAGE_MAXIMUM (Keyboard Right GUI)
+    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
+    0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)
+    0x75, 0x01,                    //   REPORT_SIZE (1)
+    0x95, 0x08,                    //   REPORT_COUNT (8)
+    0x81, 0x02,                    //   INPUT (Data,Var,Abs)
+    0x95, 0x01,                    //   REPORT_COUNT (1)
+    0x75, 0x08,                    //   REPORT_SIZE (8)
+    0x81, 0x03,                    //   INPUT (Cnst,Var,Abs)
+    0x95, 0x05,                    //   REPORT_COUNT (5)
+    0x75, 0x01,                    //   REPORT_SIZE (1)
+    0x05, 0x08,                    //   USAGE_PAGE (LEDs)
+    0x19, 0x01,                    //   USAGE_MINIMUM (Num Lock)
+    0x29, 0x05,                    //   USAGE_MAXIMUM (Kana)
+    0x91, 0x02,                    //   OUTPUT (Data,Var,Abs)
+    0x95, 0x01,                    //   REPORT_COUNT (1)
+    0x75, 0x03,                    //   REPORT_SIZE (3)
+    0x91, 0x03,                    //   OUTPUT (Cnst,Var,Abs)
+    0x95, 0x06,                    //   REPORT_COUNT (6)
+    0x75, 0x08,                    //   REPORT_SIZE (8)
+    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
+    0x25, 0x65,                    //   LOGICAL_MAXIMUM (101)
+    0x05, 0x07,                    //   USAGE_PAGE (Keyboard)
+    0x19, 0x00,                    //   USAGE_MINIMUM (Reserved (no event indicated))
+    0x29, 0x65,                    //   USAGE_MAXIMUM (Keyboard Application)
+    0x81, 0x00,                    //   INPUT (Data,Ary,Abs)
+    0xc0,                          // End Collection
+    //
+    0x05, 0x0C, /*		Usage Page (Consumer Devices)		*/
+    0x09, 0x01, /*		Usage (Consumer Control)			*/
+    0xA1, 0x01, /*		Collection (Application)			*/
+    0x85, 0x02,	/*		Report ID=2							*/
+    0x05, 0x0C, /*		Usage Page (Consumer Devices)		*/
+    0x15, 0x00, /*		Logical Minimum (0)					*/
+    0x25, 0x01, /*		Logical Maximum (1)					*/
+    0x75, 0x01, /*		Report Size (1)						*/
+    0x95, 0x07, /*		Report Count (7)					*/
+    0x09, 0xB5, /*		Usage (Scan Next Track)				*/
+    0x09, 0xB6, /*		Usage (Scan Previous Track)			*/
+    0x09, 0xB7, /*		Usage (Stop)						*/
+    0x09, 0xCD, /*		Usage (Play / Pause)				*/
+    0x09, 0xE2, /*		Usage (Mute)						*/
+    0x09, 0xE9, /*		Usage (Volume Up)					*/
+    0x09, 0xEA, /*		Usage (Volume Down)					*/
+    0x81, 0x02, /*		Input (Data, Variable, Absolute)	*/
+    0x95, 0x01, /*		Report Count (1)					*/
+    0x81, 0x01, /*		Input (Constant)					*/
+    0xC0,              // End Collection
+
+    // how to format the 3 byte report
+    // byte 0 report ID = 0x02 (VOLUME_REPORT)
+    // byte 1 media code  for ex VOL_UP 0xE9 , VOL_DONW 0xEA ... etc
+    // byte 2  0x00
+    // a second  report with 0 code shal be send to avoid "key repaeat"
+}; 
+
+uint32_t  nOutData;
+uint8_t OutDataBuffer[HID_EPOUT_SIZE]; // local copy for user (usb fly at same time)
+uint8_t OutData[HID_EPOUT_SIZE]; // live usb buffer
+
+
+static uint8_t  USBD_HID_Init (USBD_HandleTypeDef *pdev, uint8_t cfgidx)
+{
+    USBD_LL_OpenEP(pdev, HID_EPIN_ADDR, USBD_EP_TYPE_INTR, HID_EPIN_SIZE);  
+#if HID_LED_SUPPORT
+    USBD_LL_OpenEP(pdev, HID_EPOUT_ADDR, USBD_EP_TYPE_INTR, HID_EPOUT_SIZE);
+#endif
+
+    pdev->pClassData = USBD_malloc(sizeof (USBD_HID_HandleTypeDef));
+
+    if(pdev->pClassData == NULL)
+        return 1;
+
+#if HID_LED_SUPPORT
+    USBD_LL_PrepareReceive(pdev, HID_EPOUT_ADDR, OutData, HID_EPOUT_SIZE);
+#endif
+    ((USBD_HID_HandleTypeDef *)pdev->pClassData)->state = HID_IDLE;
+    return 0;
+}
+
+static uint8_t  USBD_HID_DeInit (USBD_HandleTypeDef *pdev, 
+        uint8_t cfgidx)
+{
+    USBD_LL_CloseEP(pdev, HID_EPIN_ADDR);
+    USBD_LL_CloseEP(pdev, HID_EPOUT_ADDR);
+
+    if(pdev->pClassData != NULL) {
+        USBD_free(pdev->pClassData);
+        pdev->pClassData = NULL;
+    } 
+
+    return USBD_OK;
+}
+
+static uint8_t  USBD_HID_Setup (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
+{
+    uint16_t len = 0;
+    uint8_t  *pbuf = NULL;
+    USBD_HID_HandleTypeDef     *hhid = (USBD_HID_HandleTypeDef*) pdev->pClassData;
+
+    switch (req->bmRequest & USB_REQ_TYPE_MASK)
+    {
+    case USB_REQ_TYPE_CLASS :  
+        switch (req->bRequest) {
+        case HID_REQ_SET_PROTOCOL:
+            hhid->Protocol = (uint8_t)(req->wValue);
+            break;
+
+        case HID_REQ_GET_PROTOCOL:
+            USBD_CtlSendData (pdev, 
+                    (uint8_t *)&hhid->Protocol,
+                    1);    
+            break;
+
+        case HID_REQ_SET_IDLE:
+            hhid->IdleState = (uint8_t)(req->wValue >> 8);
+            break;
+
+        case HID_REQ_GET_IDLE:
+            USBD_CtlSendData (pdev, 
+                    (uint8_t *)&hhid->IdleState,
+                    1);        
+            break;      
+
+        default:
+            USBD_CtlError (pdev, req);
+            return USBD_FAIL; 
+        }
+        break;
+
+    case USB_REQ_TYPE_STANDARD:
+        switch (req->bRequest) {
+        case USB_REQ_GET_DESCRIPTOR: 
+            if( req->wValue >> 8 == HID_REPORT_DESC)
+            {
+                len = MIN(HID_REPORT_DESC_SIZE , req->wLength);
+                pbuf = HID_ReportDesc;
+            }
+            else if( req->wValue >> 8 == HID_DESCRIPTOR_TYPE)
+            {
+                pbuf = USBD_HID_Desc;   
+                len = MIN(USB_HID_DESC_SIZ , req->wLength);
+            }
+
+            USBD_CtlSendData (pdev, 
+                    pbuf,
+                    len);
+
+            break;
+
+        case USB_REQ_GET_INTERFACE :
+            USBD_CtlSendData (pdev,
+                    (uint8_t *)&hhid->AltSetting,
+                    1);
+            break;
+
+        case USB_REQ_SET_INTERFACE :
+            hhid->AltSetting = (uint8_t)(req->wValue);
+            break;
+        }
+    }
+    return USBD_OK;
+}
+
+uint8_t USBD_HID_SendReport (USBD_HandleTypeDef  *pdev, uint8_t *report, uint16_t len)
+{
+    USBD_HID_HandleTypeDef *hhid = (USBD_HID_HandleTypeDef*)pdev->pClassData;
+
+    if (pdev->dev_state != USBD_STATE_CONFIGURED )
+        return USBD_OK;
+
+    if(hhid->state == HID_IDLE)
+        return USBD_OK;
+
+    hhid->state = HID_BUSY;
+    USBD_LL_Transmit(pdev, HID_EPIN_ADDR, report, len);
+    return USBD_OK;
+}
+
+uint32_t USBD_HID_GetPollingInterval (USBD_HandleTypeDef *pdev)
+{
+    uint32_t polling_interval = 0;
+
+    /* HIGH-speed endpoints */
+    if(pdev->dev_speed == USBD_SPEED_HIGH)
+    {
+        /* Sets the data transfer polling interval for high speed transfers. 
+           Values between 1..16 are allowed. Values correspond to interval 
+           of 2 ^ (bInterval-1). This option (8 ms, corresponds to HID_HS_BINTERVAL */
+        polling_interval = (((1 <<(HID_HS_BINTERVAL - 1)))/8);
+    }
+    else   /* LOW and FULL-speed endpoints */
+    {
+        /* Sets the data transfer polling interval for low and full 
+           speed transfers */
+        polling_interval =  HID_FS_BINTERVAL;
+    }
+
+    return ((uint32_t)(polling_interval));
+}
+
+static uint8_t  *USBD_HID_GetCfgDesc (uint16_t *length)
+{
+    *length = sizeof (USBD_HID_CfgDesc);
+    return USBD_HID_CfgDesc;
+}
+
+
+static uint8_t  USBD_HID_DataIn (USBD_HandleTypeDef *pdev, 
+        uint8_t epnum)
+{
+    /* Ensure that the FIFO is empty before a new transfer, this condition could 
+       be caused by  a new transfer before the end of the previous transfer */
+    ((USBD_HID_HandleTypeDef *)pdev->pClassData)->state = HID_IDLE;
+    return USBD_OK;
+}
+
+
+__weak void USBD_HID_GetReport(uint8_t *buf, int len){
+}
+
+static uint8_t  USBD_HID_DataOut (USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+    int len;
+
+    nOutData++;
+    // data cpy so we can be ready for next usb out and used received data safely
+    len = USBD_LL_GetRxDataSize (pdev, epnum);
+    memcpy(OutDataBuffer, OutData, len);
+    USBD_LL_PrepareReceive(pdev, HID_EPOUT_ADDR, OutData, HID_EPOUT_SIZE);
+    USBD_HID_GetReport(OutDataBuffer, len);
+    return USBD_OK;
+}
+
+static uint8_t  *USBD_HID_GetDeviceQualifierDesc (uint16_t *length)
+{
+    *length = sizeof (USBD_HID_DeviceQualifierDesc);
+    return USBD_HID_DeviceQualifierDesc;
+}
+
diff --git a/fw/hid-dials/src/usbd_hid.h b/fw/hid-dials/src/usbd_hid.h
new file mode 100644
index 0000000..fa2f0a2
--- /dev/null
+++ b/fw/hid-dials/src/usbd_hid.h
@@ -0,0 +1,193 @@
+/**
+  ******************************************************************************
+  * @file    usbd_hid.h
+  * @author  MCD Application Team
+  * @version V2.4.2
+  * @date    11-December-2015
+  * @brief   Header file for the usbd_hid_core.c file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_HID_H
+#define __USB_HID_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include  "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+  
+/** @defgroup USBD_HID
+  * @brief This file is the Header file for usbd_hid.c
+  * @{
+  */ 
+
+/** set this to 0/1 if to have led or not
+ * it can be defined in the build configuraton symbol */
+#ifndef  HID_LED_SUPPORT
+#   define HID_LED_SUPPORT 0
+#endif
+
+ /**  define  VOLUME_REPORT  to tehr eport ID to use for volume or 0 if not support*/
+#define  HID_MEDIA_REPORT  2
+#ifdef   HID_MEDIA_REPORT
+#   define HID_MEDIA_SIZE    25
+#else
+#   define HID_MEDIA_SIZE   0
+#endif
+
+#if HID_MEDIA_REPORT == 1
+#     error "volume report can't be 1 already sued for stad report"
+#endif
+
+/** @defgroup USBD_HID_Exported_Defines
+  * @{
+  */ 
+#define HID_EPIN_ADDR                 0x81
+
+#define HID_EPOUT_ADDR                0x01
+#define HID_EPOUT_SIZE                0x08
+
+#define HID_EPIN_SIZE                 16
+
+ #if  HID_LED_SUPPORT
+#   define CFG_ADD_SIZE                  7 /* one ep */
+#   define HID_NUM_EP   2
+#else
+#   define CFG_ADD_SIZE                  0
+#   define HID_NUM_EP   1
+#endif
+
+#define USB_HID_CONFIG_DESC_SIZ       (34+CFG_ADD_SIZE)
+
+#define USB_HID_DESC_SIZ              9
+
+
+
+#if HID_LED_SUPPORT
+#   define HID_LED_SIZE    18
+#else
+#   define HID_LED_SIZE    0
+#endif
+
+
+
+#define HID_REPORT_DESC_SIZE    104
+
+
+#define HID_DESCRIPTOR_TYPE           0x21
+#define HID_REPORT_DESC               0x22
+
+#define HID_HS_BINTERVAL               0x07
+#define HID_FS_BINTERVAL               0x0A
+#define HID_POLLING_INTERVAL           0x0A
+
+#define HID_REQ_SET_PROTOCOL          0x0B
+#define HID_REQ_GET_PROTOCOL          0x03
+
+#define HID_REQ_SET_IDLE              0x0A
+#define HID_REQ_GET_IDLE              0x02
+
+#define HID_REQ_SET_REPORT            0x09
+#define HID_REQ_GET_REPORT            0x01
+/**
+  * @}
+  */ 
+
+
+/** @defgroup USBD_CORE_Exported_TypesDefinitions
+  * @{
+  */
+typedef enum
+{
+  HID_IDLE = 0,
+  HID_BUSY,
+}
+HID_StateTypeDef; 
+
+
+typedef struct
+{
+  uint32_t             Protocol;   
+  uint32_t             IdleState;  
+  uint32_t             AltSetting;
+  HID_StateTypeDef     state;  
+}
+USBD_HID_HandleTypeDef; 
+/**
+  * @}
+  */ 
+
+
+
+/** @defgroup USBD_CORE_Exported_Macros
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup USBD_CORE_Exported_Variables
+  * @{
+  */ 
+
+extern USBD_ClassTypeDef  USBD_HID;
+#define USBD_HID_CLASS    &USBD_HID
+/**
+  * @}
+  */ 
+
+/** @defgroup USB_CORE_Exported_Functions
+  * @{
+  */ 
+uint8_t USBD_HID_SendReport (USBD_HandleTypeDef *pdev, 
+                                 uint8_t *report,
+                                 uint16_t len);
+
+uint32_t USBD_HID_GetPollingInterval (USBD_HandleTypeDef *pdev);
+
+
+/** user redifinable */
+void USBD_HID_GetReport(uint8_t * OutData, int len);
+/**
+  * @}
+  */ 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __USB_HID_H */
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+  
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
-- 
cgit