HC32L130FLASH

只看该作者 · 2021-5-23 10:53

记录下写flash，加深下印象

uint8_t  flash_512byte[512] = {0};

/**
*****************************************************************************
** \brief FLASH 字节写
**
** 用于向FLASH写入1字节数据.
**
** \param [in]  u32Addr       Flash地址
** \param [in]  u8Data          1字节数据
**
** \retval Ok                   写入成功.
** \retval ErrorInvalidParameter FLASH地址无效
** \retval ErrorTimeout       操作超时
*****************************************************************************/
en_result_t Flash_WriteByte(uint32_t u32Addr, uint8_t u8Data)
{
en_result_t          enResult = Ok;
volatile uint32_t    u32TimeOut = FLASH_TIMEOUT_PGM;

if (FLASH_END_ADDR < u32Addr)
{
      enResult = ErrorInvalidParameter;
      return (enResult);
}

//busy?
u32TimeOut = FLASH_TIMEOUT_PGM;
while (TRUE == M0P_FLASH->CR_f.BUSY)
{
      if(0 == u32TimeOut--)
      {
         return ErrorTimeout;
      }
}

//set OP
u32TimeOut = FLASH_TIMEOUT_PGM;
while(Program != M0P_FLASH->CR_f.OP)
{
      if(u32TimeOut--)
      {
         FLASH_BYPASS();
         M0P_FLASH->CR_f.OP = Program;
      }
      else
      {
         return ErrorTimeout;
      }
}

//Flash 解锁
Flash_UnlockAll();

//write data
*((volatile uint8_t*)u32Addr) = u8Data;

//busy?
u32TimeOut = FLASH_TIMEOUT_PGM;
while (TRUE == M0P_FLASH->CR_f.BUSY)
{
      if(0 == u32TimeOut--)
      {
         return ErrorTimeout;
      }
}

//Flash 加锁
Flash_LockAll();

return (enResult);
}

//******************************************************************************
//****函数说明：在flash中指定地址开始写入指定个数的数据，此函数只适用于flash没有数据的情况
//****入口参数：WriteAddr:开始写入的地址，，
//*************：pBuffer:数据数组首地址
//*************：NumToWrite:要写入数据的个数
//****出口参数：无
//****函数备注：无
//****版本信息：20201209V1.0
//****修改说明：无
//******************************************************************************
void user_Flash_FlashWrite(uint32_t WriteAddr,uint8_t *pBuffer,uint16_t NumToWrite)
{
__disable_irq();
while(NumToWrite--)
{
      Flash_WriteByte(WriteAddr,*pBuffer);
      WriteAddr++;
      pBuffer++;
}
__enable_irq();

}

//******************************************************************************
//****函数说明：在flash任意指定地址开始写入指定个数的数据
//****入口参数：Present_addr:起始地址
//*************：len:数据数组长度
//*************：dat:要写入数据
//****出口参数：无
//****函数备注：无
//****版本信息：V2.0
//****修改说明：无
//******************************************************************************

void user_Flash_FlashWrite512(int32_t Present_addr,uint8_t len,uint8_t *dat)
{
int16_t i = 0;
      //数据未超页-------------------------------------------------------
if((Present_addr/512) == ((Present_addr+len)/512))
{
      //读出512字节，整页--------------------------------------------
      CIWDG(CIWDG_flag);
      for(i=0;i<512;i++)
      {
         flash_512byte[i] = *((unsigned char *)((Present_addr/512)*512) + i);
      }
      //修改目标地址数据---------------------------------------------
      CIWDG(CIWDG_flag);
      for(i=0;i<len;i++)
      {
         flash_512byte[(Present_addr%512)+i] = *dat;
         dat++;
      }

      //擦除页--------------------------------------------------------
      CIWDG(CIWDG_flag);
      Flash_SectorErase(Present_addr);
      CIWDG(CIWDG_flag);


      //写整页--------------------------------------------------------
      user_Flash_FlashWrite((Present_addr/512)*512,flash_512byte,512);
}

//数据跨页----------------------------------------------------------
else
{
      CIWDG(CIWDG_flag);
      //读出512字节，整页--------------------------------------------
      for(i=0;i<512;i++)
      {
         flash_512byte[i] = *((unsigned char *)((Present_addr/512)*512) + i);
      }
      for(i=0;i<(512-(Present_addr%512));i++)
      {
         flash_512byte[Present_addr%512 + i] = *dat++;
      }

      //擦除页--------------------------------------------------------
      CIWDG(CIWDG_flag);
      Flash_SectorErase(Present_addr);

      //写整页--------------------------------------------------------
      CIWDG(CIWDG_flag);
      user_Flash_FlashWrite(((Present_addr/512)*512),flash_512byte,512);
      CIWDG(CIWDG_flag);
      //读出512字节，整页--------------------------------------------
      for(int16_t i=0;i<512;i++)
      {
         flash_512byte[i] = *((unsigned char *)((((Present_addr+len)/512)*512) + i));
      }
      for(i=0;i<((Present_addr+len)%512);i++)
      {
         flash_512byte[i] = *dat++;
      }
      //擦除页--------------------------------------------------------
      CIWDG(CIWDG_flag);
      Flash_SectorErase(Present_addr+len);

      //写整页--------------------------------------------------------
      CIWDG(CIWDG_flag);
      user_Flash_FlashWrite((((Present_addr+len)/512)*512),flash_512byte,512);
}
}

只看该作者 · 2022-6-30 08:58

HC32L130FLASH

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