From a81fc41c3eb99e8fc52aa734ee63e13c937aab81 Mon Sep 17 00:00:00 2001 From: JanHenrik Date: Sun, 19 Jan 2020 00:56:37 +0100 Subject: added blink example --- .../Src/stm32f0xx_hal_crc_ex.c | 227 +++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc_ex.c (limited to 'Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc_ex.c') diff --git a/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc_ex.c b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc_ex.c new file mode 100644 index 0000000..f9856c0 --- /dev/null +++ b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_crc_ex.c @@ -0,0 +1,227 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_crc_ex.c + * @author MCD Application Team + * @brief Extended CRC HAL module driver. + * This file provides firmware functions to manage the extended + * functionalities of the CRC peripheral. + * + @verbatim +================================================================================ + ##### How to use this driver ##### +================================================================================ + [..] + (+) Set user-defined generating polynomial thru HAL_CRCEx_Polynomial_Set() + (+) Configure Input or Output data inversion + + @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 CRCEx CRCEx + * @brief CRC Extended HAL module driver + * @{ + */ + +#ifdef HAL_CRC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Exported functions --------------------------------------------------------*/ + +/** @defgroup CRCEx_Exported_Functions CRC Extended Exported Functions + * @{ + */ + +/** @defgroup CRCEx_Exported_Functions_Group1 Extended Initialization/de-initialization functions + * @brief Extended Initialization and Configuration functions. + * +@verbatim + =============================================================================== + ##### Extended configuration functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Configure the generating polynomial + (+) Configure the input data inversion + (+) Configure the output data inversion + +@endverbatim + * @{ + */ + + +#if defined(CRC_POL_POL) +/** + * @brief Initialize the CRC polynomial if different from default one. + * @param hcrc CRC handle + * @param Pol CRC generating polynomial (7, 8, 16 or 32-bit long). + * This parameter is written in normal representation, e.g. + * @arg for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65 + * @arg for a polynomial of degree 16, X^16 + X^12 + X^5 + 1 is written 0x1021 + * @param PolyLength CRC polynomial length. + * This parameter can be one of the following values: + * @arg @ref CRC_POLYLENGTH_7B 7-bit long CRC (generating polynomial of degree 7) + * @arg @ref CRC_POLYLENGTH_8B 8-bit long CRC (generating polynomial of degree 8) + * @arg @ref CRC_POLYLENGTH_16B 16-bit long CRC (generating polynomial of degree 16) + * @arg @ref CRC_POLYLENGTH_32B 32-bit long CRC (generating polynomial of degree 32) + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CRCEx_Polynomial_Set(CRC_HandleTypeDef *hcrc, uint32_t Pol, uint32_t PolyLength) +{ + HAL_StatusTypeDef status = HAL_OK; + uint32_t msb = 31U; /* polynomial degree is 32 at most, so msb is initialized to max value */ + + /* Check the parameters */ + assert_param(IS_CRC_POL_LENGTH(PolyLength)); + + /* check polynomial definition vs polynomial size: + * polynomial length must be aligned with polynomial + * definition. HAL_ERROR is reported if Pol degree is + * larger than that indicated by PolyLength. + * Look for MSB position: msb will contain the degree of + * the second to the largest polynomial member. E.g., for + * X^7 + X^6 + X^5 + X^2 + 1, msb = 6. */ + while ((msb-- > 0U) && ((Pol & ((uint32_t)(0x1U) << (msb & 0x1FU))) == 0U)) + { + } + + switch (PolyLength) + { + case CRC_POLYLENGTH_7B: + if (msb >= HAL_CRC_LENGTH_7B) + { + status = HAL_ERROR; + } + break; + case CRC_POLYLENGTH_8B: + if (msb >= HAL_CRC_LENGTH_8B) + { + status = HAL_ERROR; + } + break; + case CRC_POLYLENGTH_16B: + if (msb >= HAL_CRC_LENGTH_16B) + { + status = HAL_ERROR; + } + break; + + case CRC_POLYLENGTH_32B: + /* no polynomial definition vs. polynomial length issue possible */ + break; + default: + status = HAL_ERROR; + break; + } + if (status == HAL_OK) + { + /* set generating polynomial */ + WRITE_REG(hcrc->Instance->POL, Pol); + + /* set generating polynomial size */ + MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, PolyLength); + } + /* Return function status */ + return status; +} +#endif /* CRC_POL_POL */ + +/** + * @brief Set the Reverse Input data mode. + * @param hcrc CRC handle + * @param InputReverseMode Input Data inversion mode. + * This parameter can be one of the following values: + * @arg @ref CRC_INPUTDATA_INVERSION_NONE no change in bit order (default value) + * @arg @ref CRC_INPUTDATA_INVERSION_BYTE Byte-wise bit reversal + * @arg @ref CRC_INPUTDATA_INVERSION_HALFWORD HalfWord-wise bit reversal + * @arg @ref CRC_INPUTDATA_INVERSION_WORD Word-wise bit reversal + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CRCEx_Input_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t InputReverseMode) +{ + /* Check the parameters */ + assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(InputReverseMode)); + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_BUSY; + + /* set input data inversion mode */ + MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, InputReverseMode); + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_READY; + + /* Return function status */ + return HAL_OK; +} + +/** + * @brief Set the Reverse Output data mode. + * @param hcrc CRC handle + * @param OutputReverseMode Output Data inversion mode. + * This parameter can be one of the following values: + * @arg @ref CRC_OUTPUTDATA_INVERSION_DISABLE no CRC inversion (default value) + * @arg @ref CRC_OUTPUTDATA_INVERSION_ENABLE bit-level inversion (e.g. for a 8-bit CRC: 0xB5 becomes 0xAD) + * @retval HAL status + */ +HAL_StatusTypeDef HAL_CRCEx_Output_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t OutputReverseMode) +{ + /* Check the parameters */ + assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(OutputReverseMode)); + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_BUSY; + + /* set output data inversion mode */ + MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, OutputReverseMode); + + /* Change CRC peripheral state */ + hcrc->State = HAL_CRC_STATE_READY; + + /* Return function status */ + return HAL_OK; +} + + + + +/** + * @} + */ + + +/** + * @} + */ + + +#endif /* HAL_CRC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit