在对SPI Flash，EEPROM等设备进行写入数据时，通常此类设备内部具有Page Buffer，写数据长度不能超过Page Buffer的长度，否则会出现问题。在对此类设备进行写入，提出相应的编程范式。
本文以SPI Flash为例，其他诸如EEPROM设备也可参考。
#define SPI_FLASH_PAGE_SIZE (0x100)
uint32_t SPIFlash_WriteBuffer(uint32_t Address, uint8_t *pBuffer, uint32_t nLength)
{
uint32_t curLength = 0;
uint32_t curAddress = 0;
uint32_t nRemain = 0;
uint32_t nPageRemain = 0;
if ((pBuffer == NULL) || (nLength == 0))
{
return 0;
}
curAddress = Address;
while (curLength < nLength)
{
nPageRemain = SPI_FLASH_PAGE_SIZE - (curAddress & (SPI_FLASH_PAGE_SIZE - 1)); /* adjust max possible size to page boundary. */
nRemain = nLength - curLength;
if (nRemain < nPageRemain)
{
nPageRemain = nRemain;
}
SPIFlash_WritePage(curAddress, pBuffer + curLength, nPageRemain);
curAddress += nPageRemain;
curLength += nPageRemain;
}
SPIFlash_WriteDisable();
return nLength;
}
void SPIFlash_WritePage(uint32_t Address, uint8_t *pBuffer, uint32_t nLength)
{
}
其中，Write Page函数可根据实际情况进行编写。
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版权声明：本文为CSDN博主「propor」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/propor/article/details/131221925
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