167 lines
3.8 KiB
C
167 lines
3.8 KiB
C
/*——————————————————————————
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* 文 件 名：Flash.c
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* 作 者：于涛
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* 日 期：2014-01-15
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* 文件说明：内部FLASH源文件
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*——————————————————————————*/
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#include "Flash.h"
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#include "General.h"
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#include "Mem.h"
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/*——————————————————————————
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* 函 数 名：STM32_FlashPageErase
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* 输入参数：pageAddr 页地址
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* 输出参数：None
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* 返 回 值：0 成功
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1 失败
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* 功能说明：内部FLASH页擦除
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*——————————————————————————*/
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u8 STM32_FlashPageErase(u32 pageAddr)
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{
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FLASH_Status status = FLASH_COMPLETE;
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FEED_WDG;
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FLASH_Unlock();
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/* Clear All pending flags */
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FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
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//FLHDBG(printf("STM32_FlashPageErase pageAddr = %08x\r\n",pageAddr););
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status = FLASH_ErasePage(pageAddr);
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if(status != FLASH_COMPLETE)
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{
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printf("STM32_FlashPageErase Err pageAddr = %08x status = %d\r\n",pageAddr,status);
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return FLH_ERASE_ERR;
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}
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FLASH_Lock();
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return FLH_SUCCESS;
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}
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/*——————————————————————————
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* 函 数 名：STM32_FlashWrite
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* 输入参数：programAddr 写地址
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pBuffer 写缓冲区
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size 写缓冲区大小
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* 输出参数：None
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* 返 回 值：0 成功
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>0 失败
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* 功能说明：内部FLASH写操作
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*——————————————————————————*/
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u8 STM32_FlashWrite(u32 programAddr, u8* pBuffer, u16 size)
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{
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u8 sflag;
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u16 offset = 0,len = size;
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FLASH_Status status = FLASH_COMPLETE;
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FLASH_Unlock();
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/* Clear All pending flags */
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FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
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sflag = len%2;
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if(sflag)
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{
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len --;
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}
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for(offset = 0; offset < len; offset += 2)
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{
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status = FLASH_ProgramHalfWord(programAddr + offset, ((u16)(pBuffer[offset + 1]) << 8) | (pBuffer[offset]));
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if(status != FLASH_COMPLETE)
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{
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printf("STM32_FlashWrite Err programAddr = %08x size = %d offset = %d status = %d\r\n",programAddr,size,offset,status);
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return FLH_WRITE_ERR;
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}
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}
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if(sflag && size>=1)
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{
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u16 val;
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val = pBuffer[size - 1]|0xFF00;
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status = FLASH_ProgramHalfWord(programAddr + offset, val);
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if(status != FLASH_COMPLETE)
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{
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printf("STM32_FlashWrite Err programAddr = %08x size = %d offset = %d status = %d\r\n",programAddr,size,offset,status);
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return FLH_WRITE_ERR;
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}
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}
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FLASH_Lock();
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return FLH_SUCCESS;
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}
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/*——————————————————————————
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* 函 数 名：STM32_FlashWriteZero
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* 输入参数：None
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* 输出参数：None
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* 返 回 值：见错误代码表
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* 功能说明：对某一地址写０
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*——————————————————————————*/
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u8 STM32_FlashWriteZero(u32 programAddr, u16 size)
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{
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u16 offset = 0;
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FLASH_Status status = FLASH_COMPLETE;
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FLASH_Unlock();
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/* Clear All pending flags */
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FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
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if (size%2==1)
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{
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size +=1;
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}
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for(offset = 0; offset < size; offset += 2)
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{
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status = FLASH_ProgramHalfWord(programAddr + offset, 0);
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if(status != FLASH_COMPLETE)
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{
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//FLHDBG(printf("STM32FLASH: Write zero error."););
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return FLH_WRITE_ERR;
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}
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}
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FLASH_Lock();
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return FLH_SUCCESS;
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}
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/*****************************************************************************
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* Function : read_unique_id
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* Description : none
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* Input : u8 * id
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* Output : None
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* Return :
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* Others :
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* Record
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* 1.Date : 20170314
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* Author : barry
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* Modification: Created function
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*****************************************************************************/
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bool read_unique_id(u8 * id)
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{
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for (u8 i = 0; i < 12; i++)
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{
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id[i] = *((u8*)(FLASH_ID_IDDR + i));
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}
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for (u8 i = 0; i < 12; i++)
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{
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if (id[i] != 0xFF)
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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