From a81fc41c3eb99e8fc52aa734ee63e13c937aab81 Mon Sep 17 00:00:00 2001 From: JanHenrik Date: Sun, 19 Jan 2020 00:56:37 +0100 Subject: added blink example --- .../STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c | 520 +++++++++++++++++++++ 1 file changed, 520 insertions(+) create mode 100644 Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c (limited to 'Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c') diff --git a/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c new file mode 100644 index 0000000..f78e66b --- /dev/null +++ b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc.c @@ -0,0 +1,520 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_crc.c + * @author MCD Application Team + * @brief CRC HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Cyclic Redundancy Check (CRC) peripheral: + * + Initialization and de-initialization functions + * + Peripheral Control functions + * + Peripheral State functions + * + @verbatim + =============================================================================== + ##### How to use this driver ##### + =============================================================================== + [..] + (+) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE(); + (+) Initialize CRC calculator + (++) specify generating polynomial (peripheral default or non-default one) + (++) specify initialization value (peripheral default or non-default one) + (++) specify input data format + (++) specify input or output data inversion mode if any + (+) Use HAL_CRC_Accumulate() function to compute the CRC value of the + input data buffer starting with the previously computed CRC as + initialization value + (+) Use HAL_CRC_Calculate() function to compute the CRC value of the + input data buffer starting with the defined initialization value + (default or non-default) to initiate CRC calculation + + @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 + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f0xx_hal.h" + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup CRC CRC + * @brief CRC HAL module driver. + * @{ + */ + +#ifdef HAL_CRC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup CRC_Private_Functions CRC Private Functions + * @{ + */ +static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength); +static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength); +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ + +/** @defgroup CRC_Exported_Functions CRC Exported Functions + * @{ + */ + +/** @defgroup CRC_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions. + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Initialize the CRC according to the specified parameters + in the CRC_InitTypeDef and create the associated handle + (+) DeInitialize the CRC peripheral + (+) Initialize the CRC MSP (MCU Specific Package) + (+) DeInitialize the CRC MSP + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the CRC according to the specified + * parameters in the CRC_InitTypeDef and create the associated handle. + * @param hcrc CRC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) +{ + /* Check the CRC handle allocation */ + if (hcrc == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); + + if (hcrc->State == HAL_CRC_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hcrc->Lock = HAL_UNLOCKED; + /* Init the low level hardware */ + HAL_CRC_MspInit(hcrc); + } + + hcrc->State = HAL_CRC_STATE_BUSY; + +#if defined(CRC_POL_POL) + /* check whether or not non-default generating polynomial has been + * picked up by user */ + assert_param(IS_DEFAULT_POLYNOMIAL(hcrc->Init.DefaultPolynomialUse)); + if (hcrc->Init.DefaultPolynomialUse == DEFAULT_POLYNOMIAL_ENABLE) + { + /* initialize peripheral with default generating polynomial */ + WRITE_REG(hcrc->Instance->POL, DEFAULT_CRC32_POLY); + MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, CRC_POLYLENGTH_32B); + } + else + { + /* initialize CRC peripheral with generating polynomial defined by user */ + if (HAL_CRCEx_Polynomial_Set(hcrc, hcrc->Init.GeneratingPolynomial, hcrc->Init.CRCLength) != HAL_OK) + { + return HAL_ERROR; + } + } +#endif /* CRC_POL_POL */ + + /* check whether or not non-default CRC initial value has been + * picked up by user */ + assert_param(IS_DEFAULT_INIT_VALUE(hcrc->Init.DefaultInitValueUse)); + if (hcrc->Init.DefaultInitValueUse == DEFAULT_INIT_VALUE_ENABLE) + { + WRITE_REG(hcrc->Instance->INIT, DEFAULT_CRC_INITVALUE); + } + else + { + WRITE_REG(hcrc->Instance->INIT, hcrc->Init.InitValue); + } + + + /* set input data inversion mode */ + assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(hcrc->Init.InputDataInversionMode)); + MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, hcrc->Init.InputDataInversionMode); + + /* set output data inversion mode */ + assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(hcrc->Init.OutputDataInversionMode)); + MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, hcrc->Init.OutputDataInversionMode); + + /* makes sure the input data format (bytes, halfwords or words stream) + * is properly specified by user */ + assert_param(IS_CRC_INPUTDATA_FORMAT(hcrc->InputDataFormat)); + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_READY; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief DeInitialize the CRC peripheral. + * @param hcrc CRC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) +{ + /* Check the CRC handle allocation */ + if (hcrc == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); + + /* Check the CRC peripheral state */ + if (hcrc->State == HAL_CRC_STATE_BUSY) + { + return HAL_BUSY; + } + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_BUSY; + + /* Reset CRC calculation unit */ + __HAL_CRC_DR_RESET(hcrc); + + /* Reset IDR register content */ + CLEAR_BIT(hcrc->Instance->IDR, CRC_IDR_IDR); + + /* DeInit the low level hardware */ + HAL_CRC_MspDeInit(hcrc); + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_RESET; + + /* Process unlocked */ + __HAL_UNLOCK(hcrc); + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Initializes the CRC MSP. + * @param hcrc CRC handle + * @retval None + */ +__weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcrc); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_CRC_MspInit can be implemented in the user file + */ +} + +/** + * @brief DeInitialize the CRC MSP. + * @param hcrc CRC handle + * @retval None + */ +__weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hcrc); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_CRC_MspDeInit can be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup CRC_Exported_Functions_Group2 Peripheral Control functions + * @brief management functions. + * +@verbatim + =============================================================================== + ##### Peripheral Control functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer + using combination of the previous CRC value and the new one. + + [..] or + + (+) compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer + independently of the previous CRC value. + +@endverbatim + * @{ + */ + +/** + * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer + * starting with the previously computed CRC as initialization value. + * @param hcrc CRC handle + * @param pBuffer pointer to the input data buffer, exact input data format is + * provided by hcrc->InputDataFormat. + * @param BufferLength input data buffer length (number of bytes if pBuffer + * type is * uint8_t, number of half-words if pBuffer type is * uint16_t, + * number of words if pBuffer type is * uint32_t). + * @note By default, the API expects a uint32_t pointer as input buffer parameter. + * Input buffer pointers with other types simply need to be cast in uint32_t + * and the API will internally adjust its input data processing based on the + * handle field hcrc->InputDataFormat. + * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) + */ +uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) +{ + uint32_t index; /* CRC input data buffer index */ + uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */ + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_BUSY; + + switch (hcrc->InputDataFormat) + { + case CRC_INPUTDATA_FORMAT_WORDS: + /* Enter Data to the CRC calculator */ + for (index = 0U; index < BufferLength; index++) + { + hcrc->Instance->DR = pBuffer[index]; + } + temp = hcrc->Instance->DR; + break; + + case CRC_INPUTDATA_FORMAT_BYTES: + temp = CRC_Handle_8(hcrc, (uint8_t *)pBuffer, BufferLength); + break; + + case CRC_INPUTDATA_FORMAT_HALFWORDS: + temp = CRC_Handle_16(hcrc, (uint16_t *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */ + break; + default: + break; + } + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_READY; + + /* Return the CRC computed value */ + return temp; +} + +/** + * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer + * starting with hcrc->Instance->INIT as initialization value. + * @param hcrc CRC handle + * @param pBuffer pointer to the input data buffer, exact input data format is + * provided by hcrc->InputDataFormat. + * @param BufferLength input data buffer length (number of bytes if pBuffer + * type is * uint8_t, number of half-words if pBuffer type is * uint16_t, + * number of words if pBuffer type is * uint32_t). + * @note By default, the API expects a uint32_t pointer as input buffer parameter. + * Input buffer pointers with other types simply need to be cast in uint32_t + * and the API will internally adjust its input data processing based on the + * handle field hcrc->InputDataFormat. + * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) + */ +uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) +{ + uint32_t index; /* CRC input data buffer index */ + uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */ + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_BUSY; + + /* Reset CRC Calculation Unit (hcrc->Instance->INIT is + * written in hcrc->Instance->DR) */ + __HAL_CRC_DR_RESET(hcrc); + + switch (hcrc->InputDataFormat) + { + case CRC_INPUTDATA_FORMAT_WORDS: + /* Enter 32-bit input data to the CRC calculator */ + for (index = 0U; index < BufferLength; index++) + { + hcrc->Instance->DR = pBuffer[index]; + } + temp = hcrc->Instance->DR; + break; + + case CRC_INPUTDATA_FORMAT_BYTES: + /* Specific 8-bit input data handling */ + temp = CRC_Handle_8(hcrc, (uint8_t *)pBuffer, BufferLength); + break; + + case CRC_INPUTDATA_FORMAT_HALFWORDS: + /* Specific 16-bit input data handling */ + temp = CRC_Handle_16(hcrc, (uint16_t *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */ + break; + + default: + break; + } + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_READY; + + /* Return the CRC computed value */ + return temp; +} + +/** + * @} + */ + +/** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions + * @brief Peripheral State functions. + * +@verbatim + =============================================================================== + ##### Peripheral State functions ##### + =============================================================================== + [..] + This subsection permits to get in run-time the status of the peripheral. + +@endverbatim + * @{ + */ + +/** + * @brief Return the CRC handle state. + * @param hcrc CRC handle + * @retval HAL state + */ +HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) +{ + /* Return CRC handle state */ + return hcrc->State; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup CRC_Private_Functions + * @{ + */ + +/** + * @brief Enter 8-bit input data to the CRC calculator. + * Specific data handling to optimize processing time. + * @param hcrc CRC handle + * @param pBuffer pointer to the input data buffer + * @param BufferLength input data buffer length + * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) + */ +static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength) +{ + uint32_t i; /* input data buffer index */ + uint16_t data; + __IO uint16_t *pReg; + + /* Processing time optimization: 4 bytes are entered in a row with a single word write, + * last bytes must be carefully fed to the CRC calculator to ensure a correct type + * handling by the peripheral */ + for (i = 0U; i < (BufferLength / 4U); i++) + { + hcrc->Instance->DR = ((uint32_t)pBuffer[4U * i] << 24U) | \ + ((uint32_t)pBuffer[(4U * i) + 1U] << 16U) | \ + ((uint32_t)pBuffer[(4U * i) + 2U] << 8U) | \ + (uint32_t)pBuffer[(4U * i) + 3U]; + } + /* last bytes specific handling */ + if ((BufferLength % 4U) != 0U) + { + if ((BufferLength % 4U) == 1U) + { + *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[4U * i]; /* Derogation MisraC2012 R.11.5 */ + } + if ((BufferLength % 4U) == 2U) + { + data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U]; + pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */ + *pReg = data; + } + if ((BufferLength % 4U) == 3U) + { + data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U]; + pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */ + *pReg = data; + + *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[(4U * i) + 2U]; /* Derogation MisraC2012 R.11.5 */ + } + } + + /* Return the CRC computed value */ + return hcrc->Instance->DR; +} + +/** + * @brief Enter 16-bit input data to the CRC calculator. + * Specific data handling to optimize processing time. + * @param hcrc CRC handle + * @param pBuffer pointer to the input data buffer + * @param BufferLength input data buffer length + * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) + */ +static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength) +{ + uint32_t i; /* input data buffer index */ + __IO uint16_t *pReg; + + /* Processing time optimization: 2 HalfWords are entered in a row with a single word write, + * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure + * a correct type handling by the peripheral */ + for (i = 0U; i < (BufferLength / 2U); i++) + { + hcrc->Instance->DR = ((uint32_t)pBuffer[2U * i] << 16U) | (uint32_t)pBuffer[(2U * i) + 1U]; + } + if ((BufferLength % 2U) != 0U) + { + pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */ + *pReg = pBuffer[2U * i]; + } + + /* Return the CRC computed value */ + return hcrc->Instance->DR; +} + +/** + * @} + */ + +#endif /* HAL_CRC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit