From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 14 Oct 2020 12:47:28 +0200 Subject: Move firmware into subdirectory --- .../STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c | 984 +++++++++++++++++++++ 1 file changed, 984 insertions(+) create mode 100644 fw/cdc-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c (limited to 'fw/cdc-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c') diff --git a/fw/cdc-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c b/fw/cdc-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c new file mode 100644 index 0000000..6b42523 --- /dev/null +++ b/fw/cdc-dials/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_comp.c @@ -0,0 +1,984 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_comp.c + * @author MCD Application Team + * @brief COMP HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the COMP peripheral: + * + Initialization/de-initialization functions + * + I/O operation functions + * + Peripheral Control functions + * + Peripheral State functions + * + @verbatim +================================================================================ + ##### COMP Peripheral features ##### +================================================================================ + + [..] + The STM32F0xx device family integrates up to 2 analog comparators COMP1 and COMP2: + (+) The non inverting input and inverting input can be set to GPIO pins. + + (+) The COMP output is available using HAL_COMP_GetOutputLevel() + and can be set on GPIO pins. + + (+) The COMP output can be redirected to embedded timers (TIM1, TIM2 and TIM3). + + (+) The comparators COMP1 and COMP2 can be combined in window mode. + + (+) The comparators have interrupt capability with wake-up + from Sleep and Stop modes (through the EXTI controller): + (++) COMP1 is internally connected to EXTI Line 21 + (++) COMP2 is internally connected to EXTI Line 22 + + (+) From the corresponding IRQ handler, the right interrupt source can be retrieved with the + macros __HAL_COMP_COMP1_EXTI_GET_FLAG() and __HAL_COMP_COMP2_EXTI_GET_FLAG(). + + + ##### How to use this driver ##### +================================================================================ + [..] + This driver provides functions to configure and program the Comparators of STM32F05x, STM32F07x and STM32F09x devices. + + To use the comparator, perform the following steps: + + (#) Fill in the HAL_COMP_MspInit() to + (++) Configure the comparator input in analog mode using HAL_GPIO_Init() + (++) Configure the comparator output in alternate function mode using HAL_GPIO_Init() to map the comparator + output to the GPIO pin + (++) If required enable the COMP interrupt by configuring and enabling EXTI line in Interrupt mode and + selecting the desired sensitivity level using HAL_GPIO_Init() function. After that enable the comparator + interrupt vector using HAL_NVIC_EnableIRQ() function. + + (#) Configure the comparator using HAL_COMP_Init() function: + (++) Select the inverting input (input minus) + (++) Select the non inverting input (input plus) + (++) Select the output polarity + (++) Select the output redirection + (++) Select the hysteresis level + (++) Select the power mode + (++) Select the event/interrupt mode + (++) Select the window mode + + -@@- HAL_COMP_Init() calls internally __HAL_RCC_SYSCFG_CLK_ENABLE() in order + to access the comparator(s) registers. + + (#) Enable the comparator using HAL_COMP_Start() function or HAL_COMP_Start_IT() function for interrupt mode. + + (#) Use HAL_COMP_TriggerCallback() and/or HAL_COMP_GetOutputLevel() functions + to manage comparator outputs (event/interrupt triggered and output level). + + (#) Disable the comparator using HAL_COMP_Stop() or HAL_COMP_Stop_IT() + function. + + (#) De-initialize the comparator using HAL_COMP_DeInit() function. + + (#) For safety purposes comparator(s) can be locked using HAL_COMP_Lock() function. + Only a MCU reset can reset that protection. + + *** Callback registration *** + ============================================= + [..] + + The compilation flag USE_HAL_COMP_REGISTER_CALLBACKS, when set to 1, + allows the user to configure dynamically the driver callbacks. + Use Functions @ref HAL_COMP_RegisterCallback() + to register an interrupt callback. + [..] + + Function @ref HAL_COMP_RegisterCallback() allows to register following callbacks: + (+) OperationCpltCallback : callback for End of operation. + (+) ErrorCallback : callback for error detection. + (+) MspInitCallback : callback for Msp Init. + (+) MspDeInitCallback : callback for Msp DeInit. + This function takes as parameters the HAL peripheral handle, the Callback ID + and a pointer to the user callback function. + [..] + + Use function @ref HAL_COMP_UnRegisterCallback to reset a callback to the default + weak function. + [..] + + @ref HAL_COMP_UnRegisterCallback takes as parameters the HAL peripheral handle, + and the Callback ID. + This function allows to reset following callbacks: + (+) OperationCpltCallback : callback for End of operation. + (+) ErrorCallback : callback for error detection. + (+) MspInitCallback : callback for Msp Init. + (+) MspDeInitCallback : callback for Msp DeInit. + [..] + + By default, after the @ref HAL_COMP_Init() and when the state is @ref HAL_COMP_STATE_RESET + all callbacks are set to the corresponding weak functions: + examples @ref HAL_COMP_OperationCpltCallback(), @ref HAL_COMP_ErrorCallback(). + Exception done for MspInit and MspDeInit functions that are + reset to the legacy weak functions in the @ref HAL_COMP_Init()/ @ref HAL_COMP_DeInit() only when + these callbacks are null (not registered beforehand). + [..] + + If MspInit or MspDeInit are not null, the @ref HAL_COMP_Init()/ @ref HAL_COMP_DeInit() + keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state. + [..] + + Callbacks can be registered/unregistered in @ref HAL_COMP_STATE_READY state only. + Exception done MspInit/MspDeInit functions that can be registered/unregistered + in @ref HAL_COMP_STATE_READY or @ref HAL_COMP_STATE_RESET state, + thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit. + [..] + + Then, the user first registers the MspInit/MspDeInit user callbacks + using @ref HAL_COMP_RegisterCallback() before calling @ref HAL_COMP_DeInit() + or @ref HAL_COMP_Init() function. + [..] + + When the compilation flag USE_HAL_COMP_REGISTER_CALLBACKS is set to 0 or + not defined, the callback registration feature is not available and all callbacks + are set to the corresponding weak functions. + + @endverbatim + ****************************************************************************** + * @attention + * + *

© Copyright (c) 2016 STMicroelectronics. + * All rights reserved.

+ * + * 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 + * + ****************************************************************************** + */ + +/* + Additional Tables: + + Table 1. COMP Inputs for the STM32F05x, STM32F07x and STM32F09x devices + +--------------------------------------------------+ + | | | COMP1 | COMP2 | + |-----------------|----------------|---------------| + | | 1/4 VREFINT | OK | OK | + | | 1/2 VREFINT | OK | OK | + | | 3/4 VREFINT | OK | OK | + | Inverting Input | VREFINT | OK | OK | + | | DAC1 OUT (PA4) | OK | OK | + | | DAC2 OUT (PA5) | OK | OK | + | | IO1 | PA0 | PA2 | + |-----------------|----------------|-------|-------| + | Non Inverting | | PA1 | PA3 | + | Input | | | | + +--------------------------------------------------+ + + Table 2. COMP Outputs for the STM32F05x, STM32F07x and STM32F09x devices + +---------------+ + | COMP1 | COMP2 | + |-------|-------| + | PA0 | PA2 | + | PA6 | PA7 | + | PA11 | PA12 | + +---------------+ + + Table 3. COMP Outputs redirection to embedded timers for the STM32F05x, STM32F07x and STM32F09x devices + +---------------------------------+ + | COMP1 | COMP2 | + |----------------|----------------| + | TIM1 BKIN | TIM1 BKIN | + | | | + | TIM1 OCREFCLR | TIM1 OCREFCLR | + | | | + | TIM1 IC1 | TIM1 IC1 | + | | | + | TIM2 IC4 | TIM2 IC4 | + | | | + | TIM2 OCREFCLR | TIM2 OCREFCLR | + | | | + | TIM3 IC1 | TIM3 IC1 | + | | | + | TIM3 OCREFCLR | TIM3 OCREFCLR | + +---------------------------------+ + +*/ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f0xx_hal.h" + +#ifdef HAL_COMP_MODULE_ENABLED + +#if defined (COMP1) || defined (COMP2) + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup COMP COMP + * @brief COMP HAL module driver + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ + +/** @defgroup COMP_Private_Constants COMP Private Constants + * @{ + */ + +/* Delay for COMP startup time. */ +/* Note: Delay required to reach propagation delay specification. */ +/* Literal set to maximum value (refer to device datasheet, */ +/* parameter "tSTART"). */ +/* Unit: us */ +#define COMP_DELAY_STARTUP_US (60U) /*!< Delay for COMP startup time */ + +/* CSR register reset value */ +#define COMP_CSR_RESET_VALUE (0x00000000U) +/* CSR register masks */ +#define COMP_CSR_RESET_PARAMETERS_MASK (0x00003FFFU) +#define COMP_CSR_UPDATE_PARAMETERS_MASK (0x00003FFEU) +/* CSR COMPx non inverting input mask */ +#define COMP_CSR_COMPxNONINSEL_MASK ((uint16_t)COMP_CSR_COMP1SW1) +/* CSR COMP2 shift */ +#define COMP_CSR_COMP1_SHIFT 0U +#define COMP_CSR_COMP2_SHIFT 16U +/** + * @} + */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup COMP_Exported_Functions COMP Exported Functions + * @{ + */ + +/** @defgroup COMP_Exported_Functions_Group1 Initialization/de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and Configuration functions ##### + =============================================================================== + [..] This section provides functions to initialize and de-initialize comparators + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the COMP according to the specified + * parameters in the COMP_InitTypeDef and create the associated handle. + * @note If the selected comparator is locked, initialization can't be performed. + * To unlock the configuration, perform a system reset. + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the COMP handle allocation and lock status */ + if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) + { + status = HAL_ERROR; + } + else + { + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput)); + assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput)); + assert_param(IS_COMP_OUTPUT(hcomp->Init.Output)); + assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol)); + assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis)); + assert_param(IS_COMP_MODE(hcomp->Init.Mode)); + + if(hcomp->Init.NonInvertingInput == COMP_NONINVERTINGINPUT_DAC1SWITCHCLOSED) + { + assert_param(IS_COMP_DAC1SWITCH_INSTANCE(hcomp->Instance)); + } + + if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE) + { + assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance)); + } + + /* Init SYSCFG and the low level hardware to access comparators */ + __HAL_RCC_SYSCFG_CLK_ENABLE(); + +#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1) + /* Init the COMP Callback settings */ + hcomp->TriggerCallback = HAL_COMP_TriggerCallback; /* Legacy weak callback */ + + if (hcomp->MspInitCallback == NULL) + { + hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */ + } + + /* Init the low level hardware */ + hcomp->MspInitCallback(hcomp); +#else + /* Init the low level hardware : SYSCFG to access comparators */ + HAL_COMP_MspInit(hcomp); +#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */ + + if(hcomp->State == HAL_COMP_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hcomp->Lock = HAL_UNLOCKED; + } + + /* Change COMP peripheral state */ + hcomp->State = HAL_COMP_STATE_BUSY; + + /* Set COMP parameters */ + /* Set COMPxINSEL bits according to hcomp->Init.InvertingInput value */ + /* Set COMPxOUTSEL bits according to hcomp->Init.Output value */ + /* Set COMPxPOL bit according to hcomp->Init.OutputPol value */ + /* Set COMPxHYST bits according to hcomp->Init.Hysteresis value */ + /* Set COMPxMODE bits according to hcomp->Init.Mode value */ + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + MODIFY_REG(COMP->CSR, + (COMP_CSR_COMPxINSEL | COMP_CSR_COMPxNONINSEL_MASK | \ + COMP_CSR_COMPxOUTSEL | COMP_CSR_COMPxPOL | \ + COMP_CSR_COMPxHYST | COMP_CSR_COMPxMODE) << regshift, + (hcomp->Init.InvertingInput | \ + hcomp->Init.NonInvertingInput | \ + hcomp->Init.Output | \ + hcomp->Init.OutputPol | \ + hcomp->Init.Hysteresis | \ + hcomp->Init.Mode) << regshift); + + if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE) + { + COMP->CSR |= COMP_CSR_WNDWEN; + } + + /* Initialize the COMP state*/ + hcomp->State = HAL_COMP_STATE_READY; + } + + return status; +} + +/** + * @brief DeInitializes the COMP peripheral + * @note Deinitialization can't be performed if the COMP configuration is locked. + * To unlock the configuration, perform a system reset. + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_DeInit(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the COMP handle allocation and lock status */ + if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) + { + status = HAL_ERROR; + } + else + { + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + /* Set COMP_CSR register to reset value for the corresponding COMP instance */ + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + MODIFY_REG(COMP->CSR, + COMP_CSR_RESET_PARAMETERS_MASK << regshift, + COMP_CSR_RESET_VALUE << regshift); + +#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1) + if (hcomp->MspDeInitCallback == NULL) + { + hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */ + } + + /* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */ + hcomp->MspDeInitCallback(hcomp); +#else + /* DeInit the low level hardware: SYSCFG, GPIO, CLOCK and NVIC */ + HAL_COMP_MspDeInit(hcomp); +#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */ + + hcomp->State = HAL_COMP_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hcomp); + } + + return status; +} + +/** + * @brief Initializes the COMP MSP. + * @param hcomp COMP handle + * @retval None + */ +__weak void HAL_COMP_MspInit(COMP_HandleTypeDef *hcomp) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcomp); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_COMP_MspInit could be implenetd in the user file + */ +} + +/** + * @brief DeInitializes COMP MSP. + * @param hcomp COMP handle + * @retval None + */ +__weak void HAL_COMP_MspDeInit(COMP_HandleTypeDef *hcomp) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcomp); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_COMP_MspDeInit could be implenetd in the user file + */ +} + +#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1) +/** + * @brief Register a User COMP Callback + * To be used instead of the weak predefined callback + * @param hcomp Pointer to a COMP_HandleTypeDef structure that contains + * the configuration information for the specified COMP. + * @param CallbackID ID of the callback to be registered + * This parameter can be one of the following values: + * @arg @ref HAL_COMP_TRIGGER_CB_ID Trigger callback ID + * @arg @ref HAL_COMP_MSPINIT_CB_ID MspInit callback ID + * @arg @ref HAL_COMP_MSPDEINIT_CB_ID MspDeInit callback ID + * @param pCallback pointer to the Callback function + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_RegisterCallback(COMP_HandleTypeDef *hcomp, HAL_COMP_CallbackIDTypeDef CallbackID, pCOMP_CallbackTypeDef pCallback) +{ + HAL_StatusTypeDef status = HAL_OK; + + if (pCallback == NULL) + { + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + return HAL_ERROR; + } + + if (HAL_COMP_STATE_READY == hcomp->State) + { + switch (CallbackID) + { + case HAL_COMP_TRIGGER_CB_ID : + hcomp->TriggerCallback = pCallback; + break; + + case HAL_COMP_MSPINIT_CB_ID : + hcomp->MspInitCallback = pCallback; + break; + + case HAL_COMP_MSPDEINIT_CB_ID : + hcomp->MspDeInitCallback = pCallback; + break; + + default : + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else if (HAL_COMP_STATE_RESET == hcomp->State) + { + switch (CallbackID) + { + case HAL_COMP_MSPINIT_CB_ID : + hcomp->MspInitCallback = pCallback; + break; + + case HAL_COMP_MSPDEINIT_CB_ID : + hcomp->MspDeInitCallback = pCallback; + break; + + default : + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + } + + return status; +} + +/** + * @brief Unregister a COMP Callback + * COMP callback is redirected to the weak predefined callback + * @param hcomp Pointer to a COMP_HandleTypeDef structure that contains + * the configuration information for the specified COMP. + * @param CallbackID ID of the callback to be unregistered + * This parameter can be one of the following values: + * @arg @ref HAL_COMP_TRIGGER_CB_ID Trigger callback ID + * @arg @ref HAL_COMP_MSPINIT_CB_ID MspInit callback ID + * @arg @ref HAL_COMP_MSPDEINIT_CB_ID MspDeInit callback ID + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_UnRegisterCallback(COMP_HandleTypeDef *hcomp, HAL_COMP_CallbackIDTypeDef CallbackID) +{ + HAL_StatusTypeDef status = HAL_OK; + + if (HAL_COMP_STATE_READY == hcomp->State) + { + switch (CallbackID) + { + case HAL_COMP_TRIGGER_CB_ID : + hcomp->TriggerCallback = HAL_COMP_TriggerCallback; /* Legacy weak callback */ + break; + + case HAL_COMP_MSPINIT_CB_ID : + hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */ + break; + + case HAL_COMP_MSPDEINIT_CB_ID : + hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */ + break; + + default : + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else if (HAL_COMP_STATE_RESET == hcomp->State) + { + switch (CallbackID) + { + case HAL_COMP_MSPINIT_CB_ID : + hcomp->MspInitCallback = HAL_COMP_MspInit; /* Legacy weak MspInit */ + break; + + case HAL_COMP_MSPDEINIT_CB_ID : + hcomp->MspDeInitCallback = HAL_COMP_MspDeInit; /* Legacy weak MspDeInit */ + break; + + default : + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Update the error code */ + hcomp->ErrorCode |= HAL_COMP_ERROR_INVALID_CALLBACK; + + /* Return error status */ + status = HAL_ERROR; + } + + return status; +} + +#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */ + +/** + * @} + */ + +/** @defgroup COMP_Exported_Functions_Group2 I/O operation functions + * @brief Data transfers functions + * +@verbatim + =============================================================================== + ##### IO operation functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to manage the COMP data + transfers. + +@endverbatim + * @{ + */ + +/** + * @brief Start the comparator + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_Start(COMP_HandleTypeDef *hcomp) +{ + uint32_t wait_loop_index = 0U; + HAL_StatusTypeDef status = HAL_OK; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the COMP handle allocation and lock status */ + if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) + { + status = HAL_ERROR; + } + else + { + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + if(hcomp->State == HAL_COMP_STATE_READY) + { + /* Enable the selected comparator */ + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + SET_BIT(COMP->CSR, COMP_CSR_COMPxEN << regshift); + + /* Set HAL COMP handle state */ + hcomp->State = HAL_COMP_STATE_BUSY; + + /* Delay for COMP startup time */ + wait_loop_index = (COMP_DELAY_STARTUP_US * (SystemCoreClock / 1000000U)); + while(wait_loop_index != 0U) + { + wait_loop_index--; + } + } + else + { + status = HAL_ERROR; + } + } + + return status; +} + +/** + * @brief Stop the comparator + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_Stop(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the COMP handle allocation and lock status */ + if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) + { + status = HAL_ERROR; + } + else + { + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + if(hcomp->State == HAL_COMP_STATE_BUSY) + { + /* Disable the selected comparator */ + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + CLEAR_BIT(COMP->CSR, COMP_CSR_COMPxEN << regshift); + + hcomp->State = HAL_COMP_STATE_READY; + } + else + { + status = HAL_ERROR; + } + } + + return status; +} + +/** + * @brief Enables the interrupt and starts the comparator + * @param hcomp COMP handle + * @retval HAL status. + */ +HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t extiline = 0U; + + /* Check the parameter */ + assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode)); + + status = HAL_COMP_Start(hcomp); + if(status == HAL_OK) + { + /* Check the Exti Line output configuration */ + extiline = COMP_GET_EXTI_LINE(hcomp->Instance); + /* Configure the rising edge */ + if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET) + { + SET_BIT(EXTI->RTSR, extiline); + } + else + { + CLEAR_BIT(EXTI->RTSR, extiline); + } + /* Configure the falling edge */ + if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET) + { + SET_BIT(EXTI->FTSR, extiline); + } + else + { + CLEAR_BIT(EXTI->FTSR, extiline); + } + + /* Clear COMP EXTI pending bit */ + WRITE_REG(EXTI->PR, extiline); + + /* Enable Exti interrupt mode */ + SET_BIT(EXTI->IMR, extiline); + } + + return status; +} + +/** + * @brief Disable the interrupt and Stop the comparator + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_Stop_IT(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Disable the Exti Line interrupt mode */ + CLEAR_BIT(EXTI->IMR, COMP_GET_EXTI_LINE(hcomp->Instance)); + + status = HAL_COMP_Stop(hcomp); + + return status; +} + +/** + * @brief Comparator IRQ Handler + * @param hcomp COMP handle + * @retval HAL status + */ +void HAL_COMP_IRQHandler(COMP_HandleTypeDef *hcomp) +{ + uint32_t extiline = COMP_GET_EXTI_LINE(hcomp->Instance); + + /* Check COMP Exti flag */ + if(READ_BIT(EXTI->PR, extiline) != RESET) + { + /* Clear COMP Exti pending bit */ + WRITE_REG(EXTI->PR, extiline); + + /* COMP trigger callback */ +#if (USE_HAL_COMP_REGISTER_CALLBACKS == 1) + hcomp->TriggerCallback(hcomp); +#else + HAL_COMP_TriggerCallback(hcomp); +#endif /* USE_HAL_COMP_REGISTER_CALLBACKS */ + } +} + +/** + * @} + */ + +/** @defgroup COMP_Exported_Functions_Group3 Peripheral Control functions + * @brief management functions + * +@verbatim + =============================================================================== + ##### Peripheral Control functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to control the COMP data + transfers. + +@endverbatim + * @{ + */ + +/** + * @brief Lock the selected comparator configuration. + * @param hcomp COMP handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_COMP_Lock(COMP_HandleTypeDef *hcomp) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the COMP handle allocation and lock status */ + if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET)) + { + status = HAL_ERROR; + } + else + { + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + /* Set lock flag */ + hcomp->State |= COMP_STATE_BIT_LOCK; + + /* Set the lock bit corresponding to selected comparator */ + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + SET_BIT(COMP->CSR, COMP_CSR_COMPxLOCK << regshift); + } + + return status; +} + +/** + * @brief Return the output level (high or low) of the selected comparator. + * The output level depends on the selected polarity. + * If the polarity is not inverted: + * - Comparator output is low when the non-inverting input is at a lower + * voltage than the inverting input + * - Comparator output is high when the non-inverting input is at a higher + * voltage than the inverting input + * If the polarity is inverted: + * - Comparator output is high when the non-inverting input is at a lower + * voltage than the inverting input + * - Comparator output is low when the non-inverting input is at a higher + * voltage than the inverting input + * @param hcomp COMP handle + * @retval Returns the selected comparator output level: COMP_OUTPUTLEVEL_LOW or COMP_OUTPUTLEVEL_HIGH. + * + */ +uint32_t HAL_COMP_GetOutputLevel(COMP_HandleTypeDef *hcomp) +{ + uint32_t level=0; + uint32_t regshift = COMP_CSR_COMP1_SHIFT; + + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + if(hcomp->Instance == COMP2) + { + regshift = COMP_CSR_COMP2_SHIFT; + } + level = READ_BIT(COMP->CSR, COMP_CSR_COMPxOUT << regshift); + + if(level != 0U) + { + return(COMP_OUTPUTLEVEL_HIGH); + } + return(COMP_OUTPUTLEVEL_LOW); +} + +/** + * @brief Comparator trigger callback. + * @param hcomp COMP handle + * @retval None + */ +__weak void HAL_COMP_TriggerCallback(COMP_HandleTypeDef *hcomp) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcomp); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_COMP_TriggerCallback should be implemented in the user file + */ +} + + +/** + * @} + */ + +/** @defgroup COMP_Exported_Functions_Group4 Peripheral State functions + * @brief Peripheral State functions + * +@verbatim + =============================================================================== + ##### Peripheral State functions ##### + =============================================================================== + [..] + This subsection permit to get in run-time the status of the peripheral + and the data flow. + +@endverbatim + * @{ + */ + +/** + * @brief Return the COMP state + * @param hcomp COMP handle + * @retval HAL state + */ +uint32_t HAL_COMP_GetState(COMP_HandleTypeDef *hcomp) +{ + /* Check the COMP handle allocation */ + if(hcomp == NULL) + { + return HAL_COMP_STATE_RESET; + } + + /* Check the parameter */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + return hcomp->State; +} + +/** + * @brief Return the COMP error code. + * @param hcomp COMP handle + * @retval COMP error code + */ +uint32_t HAL_COMP_GetError(COMP_HandleTypeDef *hcomp) +{ + /* Check the parameters */ + assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance)); + + return hcomp->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* COMP1 || COMP2 */ + +#endif /* HAL_COMP_MODULE_ENABLED */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit