不知道為為什么,STM32 LL庫并沒有FLASH的庫函數，于是決定寫一個

LL庫的特色，就是一個函數，只占用一個指令周期，比如，設置GPIO輸出的狀態，就是LL_GPIO_SetOutputPin();

__STATIC_INLINE void LL_GPIO_SetOutputPin(GPIO_TypeDef *GPIOx, uint32_t PinMask) {WRITE_REG(GPIOx->BSRR, PinMask); }

于是我根據這種風格，已經常用的操作寫了一個.h和.c文件

頭文件代碼

#ifndef __STM32F0xx_LL_FLASH_EX_H #define __STM32F0xx_LL_FLASH_EX_H#include "stm32f0xx.h"#define FLASH_FLAG_BSY FLASH_SR_BSY /*!< FLASH Busy flag */ #define FLASH_FLAG_PGERR FLASH_SR_PGERR /*!< FLASH Programming error flag */ #define FLASH_FLAG_WRPERR FLASH_SR_WRPERR /*!< FLASH Write protected error flag */ #define FLASH_FLAG_EOP FLASH_SR_EOP /*!< FLASH End of Operation flag */#define FLASH_TYPEERASE_PAGES FLASH_CR_PER /*!< FLASH_CR_PER */ #define FLASH_TYPEERASE_MASSERASE FLASH_CR_MER /*!< MASSERASE */#if defined(STM32F030x6) || defined(STM32F030x8) || defined(STM32F031x6) || defined(STM32F038xx) \|| defined(STM32F051x8) || defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F058xx) || defined(STM32F070x6) #define FLASH_PAGE_SIZE 0x400U #endif /* STM32F030x6 || STM32F030x8 || STM32F031x6 || STM32F051x8 || STM32F042x6 || STM32F048xx || STM32F058xx || STM32F070x6 */#if defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || defined(STM32F070xB) \|| defined(STM32F091xC) || defined(STM32F098xx) || defined(STM32F030xC) #define FLASH_PAGE_SIZE 0x800U #endif /* STM32F071xB || STM32F072xB || STM32F078xx || STM32F091xC || STM32F098xx || STM32F030xC */typedef enum {ProgaraType_DATA64,ProgaraType_DATA32,ProgaraType_DATA16 }ProgaramDataType;typedef enum {\FLASH_Lock=1U,Flash_Unlock=!FLASH_Lock\ }FlashStates;/* Set the OBL_Launch bit to launch the option byte loading */ __STATIC_INLINE void LL_FLASH_SET_OBL_Launch(FLASH_TypeDef *FLASHx) {SET_BIT(FLASHx->CR, FLASH_CR_OBL_LAUNCH); } __STATIC_INLINE void LL_FLASH_Lock(FLASH_TypeDef *FLASHx) {SET_BIT(FLASHx->CR, FLASH_CR_LOCK); }/* @brief Set flash erase type.* @param FLASH_TYPEERASE specifies the FLASH flags to clear.* This parameter can be any combination of the following values:* @arg @ref FLASH_TYPEERASE_PAGES PAGES Erase* @arg @ref FLASH_TYPEERASE_MASSERASE FLASH Write protected error flag * @retval none*/__STATIC_INLINE void LL_FLASH_SetTypeErase(FLASH_TypeDef *FLASHx,uint32_t FLASH_TYPEERASE) {SET_BIT(FLASHx->CR, FLASH_TYPEERASE); }/* @brief Set flash erase ADDR.* This parameter can be any combination of the following values:* @arg @ref EraseADDR uint32_t value* @retval none*/__STATIC_INLINE void LL_FLASH_SetEraseADDR(FLASH_TypeDef *FLASHx,uint32_t EraseADDR) {WRITE_REG(FLASHx->AR, EraseADDR); }/* @brief Set flash erase ADDR.* This parameter can be any combination of the following values:* @arg @ref EraseADDR uint32_t value* @retval none*/__STATIC_INLINE void LL_FLASH_StartErase(FLASH_TypeDef *FLASHx) {SET_BIT(FLASHx->CR, FLASH_CR_STRT); }/* @brief Clear the specified FLASH flag.* @param __FLAG__ specifies the FLASH flags to clear.* This parameter can be any combination of the following values:* @arg @ref FLASH_FLAG_EOP FLASH End of Operation flag * @arg @ref FLASH_FLAG_WRPERR FLASH Write protected error flag * @arg @ref FLASH_FLAG_PGERR FLASH Programming error flag* @retval none*/__STATIC_INLINE void LL_FLASH_ClearFlag(FLASH_TypeDef *FLASHx,uint32_t STATE_FLAG) {WRITE_REG(FLASHx->SR, STATE_FLAG); }/*get bit flash bsy*/ __STATIC_INLINE uint32_t LL_FLASH_IsActiveFlag_BSY(FLASH_TypeDef *FLASHx) {return (READ_BIT(FLASHx->SR, FLASH_SR_BSY) == (FLASH_SR_BSY)); } /*get end of operation bilt*/ __STATIC_INLINE uint32_t LL_FLASH_IsActiveFlag_EOP(FLASH_TypeDef *FLASHx) {return (READ_BIT(FLASHx->SR, FLASH_SR_EOP) == (FLASH_SR_EOP)); } /*clear end of operation bilt*/ __STATIC_INLINE void LL_FLASH_ClearFlag_EOP(FLASH_TypeDef *FLASHx) {SET_BIT(FLASHx->SR, FLASH_SR_EOP);//EOP bit Set clear }/* @brief Set flash erase type.* @param FLASH_TYPEERASE specifies the FLASH flags to clear.* This parameter can be any combination of the following values:* @arg @ref FLASH_TYPEERASE_PAGES PAGES Erase* @arg @ref FLASH_TYPEERASE_MASSERASE FLASH Write protected error flag * @retval none*/ __STATIC_INLINE void LL_FLASH_DisenableErase(FLASH_TypeDef *FLASHx,uint32_t FLASH_TYPEERASE) {CLEAR_BIT(FLASHx->CR, FLASH_TYPEERASE); }/*EnableProgram*/ __STATIC_INLINE void LL_FLASH_EnableProgram(FLASH_TypeDef *FLASHx) {SET_BIT(FLASHx->CR,FLASH_CR_PG); } /*DisenableProgram*/ __STATIC_INLINE void LL_FLASH_DisenableProgram(FLASH_TypeDef *FLASHx) {CLEAR_BIT(FLASHx->CR,FLASH_CR_PG); } /*read flash's states of lock or unlock*/ __STATIC_INLINE FlashStates LL_FLASH_LockState(FLASH_TypeDef *FLASHx) {return (FlashStates)(READ_BIT(FLASHx->CR,FLASH_CR_LOCK)); } /*set key for flash*/ __STATIC_INLINE void LL_FLASh_SetKey(FLASH_TypeDef *FLASHx,uint32_t key) {WRITE_REG(FLASH->KEYR,key); }LL_StatusTypeDef LL_Flash_Unlock(void); LL_StatusTypeDef LL_Flash_PageErase(uint32_t page_addr,uint16_t NbPages); LL_StatusTypeDef LL_FLASH_Program(ProgaramDataType ProgramType,uint32_t flash_addr,uint64_t data); #endif

C文件代碼

#include "stm32f0xx_ll_flash_ex.h"void static LL_FLASH_Program_TwoBtye(uint32_t flash_addr,uint16_t data) {LL_FLASH_EnableProgram(FLASH);*(__IO uint16_t*)(flash_addr) = data; }LL_StatusTypeDef LL_Flash_Unlock(void) {while (LL_FLASH_IsActiveFlag_BSY(FLASH)) {} if (LL_FLASH_LockState(FLASH)) { LL_FLASh_SetKey(FLASH,FLASH_KEY1);LL_FLASh_SetKey(FLASH,FLASH_KEY2);}return LL_OK; }LL_StatusTypeDef LL_Flash_PageErase(uint32_t page_addr,uint16_t Nb) {uint32_t End_addr = 10* FLASH_PAGE_SIZE +page_addr;uint32_t Start_addr = page_addr;for(;Start_addr < End_addr;(Start_addr += FLASH_PAGE_SIZE)){LL_FLASH_SetTypeErase(FLASH,FLASH_TYPEERASE_PAGES);LL_FLASH_SetEraseADDR(FLASH,Start_addr);LL_FLASH_StartErase(FLASH); while (LL_FLASH_IsActiveFlag_BSY(FLASH)) { } if (LL_FLASH_IsActiveFlag_EOP(FLASH)) { LL_FLASH_ClearFlag_EOP(FLASH);; } else{ return LL_ERROR;}LL_FLASH_DisenableErase(FLASH,FLASH_TYPEERASE_PAGES);}return LL_OK; }LL_StatusTypeDef LL_FLASH_Program(ProgaramDataType ProgramType,uint32_t flash_addr,uint64_t data) {uint8_t index = 0U;uint8_t nbiterations = 0U;if(ProgramType == ProgaraType_DATA16)nbiterations = 1U;else if(ProgramType == ProgaraType_DATA32)nbiterations = 2U;elsenbiterations = 4U;for(index = 0U; index < nbiterations; index++){LL_FLASH_Program_TwoBtye((flash_addr + (2U*index)), (uint16_t)(data >> (16U*index)));}while (LL_FLASH_IsActiveFlag_BSY(FLASH)) {}if (LL_FLASH_IsActiveFlag_EOP(FLASH)) {LL_FLASH_ClearFlag_EOP(FLASH);}else{return LL_ERROR;}LL_FLASH_DisenableProgram(FLASH);return LL_OK; }

總結

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