diff options
Diffstat (limited to 'hid-dials/Src/main.c')
| -rw-r--r-- | hid-dials/Src/main.c | 465 |
1 files changed, 0 insertions, 465 deletions
diff --git a/hid-dials/Src/main.c b/hid-dials/Src/main.c deleted file mode 100644 index 4ccbca0..0000000 --- a/hid-dials/Src/main.c +++ /dev/null @@ -1,465 +0,0 @@ -
-#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;
-
-PCD_HandleTypeDef hpcd_USB_FS;
-
-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);
- }
-}
-
-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);
- }
-}
-
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