10 关于RT Thread Fal操作外部flash的问题

发布于 2024-12-23 11:54:28 浏览：57 订阅该版

我使用FAL操作外部的w25q128flash，最开始写入8个字节测试，写入和读出的内容都一致
后面我加大了写入的内容，加大到512字节，发现写入读出内容不同，我怀疑是打印问题于是对写入和读出的内容进行CRC验证，结果还是不同
于是我一步一步缩减写入的字节数，直到写入的内容到32字节，还是出现写入读出内容不同的现象
请问这块是有什么配置的问题么（已确定和栈空间无关，操作的线程栈空间开了4096）
附上相关代码

```c
void testFalWR(void)
{
	uint8_t testWrite[320] = {	0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00,
								0xa8, 0xf3, 0x01, 0x20, 0x99, 0xc2, 0x00, 0x00, 0x71, 0x9b, 0x01, 0x00, 0x7d, 0xc3, 0x00, 0x00};
	uint8_t testRead[320] = {0};
	
	uint8_t TestWrite[8] = {0x01, 0x03, 0x05, 0x07, 0x02, 0x04, 0x06, 0x08};
	uint8_t TestRead[8] = {0};
	volatile uint16_t res = 0;
	static uint16_t CRC_Temp = 0;
	static uint16_t CRC_Read = 0;
	static uint8_t crc_h = 0xff;
	static uint8_t crc_l = 0xff;
	static const struct fal_partition *part_dev = NULL;
	static const struct fal_flash_dev *flash_dev = NULL;
	//flash_dev = fal_flash_device_find("upgrade");
	part_dev = fal_partition_find("upgrade");
	if(part_dev != NULL)
	{
		DEBUG_LOG("#####################\r\nfind fal partition######################\r\n");
		DEBUG_LOG("Probed a flash partition | %s | flash_dev: %s | offset: %ld | len: %d |.\n",
				part_dev->name, part_dev->flash_name, part_dev->offset, part_dev->len);	
		res = fal_partition_write(part_dev, 0x00, testWrite, 64);	
		CRC_Temp = GetCRC16_User((unsigned char *)testWrite, 64, crc_h, crc_l);	
		DEBUG_LOG("#####################\r\nFAL write %d Byte,crc is 0x%02x######################\r\n", res, CRC_Temp);
		res = 0;
		res = fal_partition_read(part_dev, 0x00, testRead, 64);
		CRC_Read = GetCRC16_User((unsigned char *)testRead, 64, crc_h, crc_l);	
		int i = 0;
		DEBUG_LOG("#####################\r\nFAL read %d Byte crc is 0x%02x:######################\r\n", res, CRC_Read);

}
}
```