关于W25Q32JVSSIQ的详细内容在之前的两篇文章中已经详细介绍，本文不做太多赘述，如果对芯片的了解有缺失的话，可以参考：

SPI协议——对外部SPI Flash操作-CSDN博客

SPI协议——读取外部SPI Flash ID_spi flash 读取id-CSDN博客

目录

一、代码编写

1.发送/接收单/多个字节的函数

2.实现扇区擦除

3.实现跨页写

 4.读取数据

 二、运行结果

 

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一、代码编写

1.发送/接收单/多个字节的函数

这样设计代码可以随意选择自己是否忽略发送/接受的数据

void SPI_FLASH_Xfer(uint8_t *snd_buf, uint8_t *recv_buf, int bytes)
{
	int 		i;
	uint8_t		send_data, recv_data;
	for(i = 0; i < bytes; i ++)
	{
		send_data = (snd_buf != NULL) ? snd_buf[i] : 0xFF;

		recv_data = SPI_FLASH_SendByte(send_data);

		if( recv_buf != NULL )
		{
			recv_buf[i] = recv_data;
		}
		printf("Sending: 0x%02X, Received: 0x%02X\n", send_data, recv_data);


	}

	HAL_Delay(1);
}

2.实现扇区擦除

int New_SPI_FLASH_SectorErase(uint32_t addr, uint32_t size)
{
    uint32_t sector, first, last;
    uint32_t address;
    int rv;

    first = addr / Sector_Size;
    last = (addr + size - 1) / Sector_Size;

    /* Start to erase all sectors */
    for (sector = first; sector <= last; sector++)
    {
        address = sector * Sector_Size;
        printf("Norflash Erase Sector@%lx ...\r\n", address);

        SPI1_FLASH_WaitEnd();
        SPI1_FLASH_WriteEnable();
        cs_low();
        SPI_FLASH_SendByte(0x20); // 发送扇区擦除命令

        /* Send the addr */
        SPI_FLASH_SendByte((address & 0xFF0000) >> 16);
        SPI_FLASH_SendByte((address & 0xFF00) >> 8);
        SPI_FLASH_SendByte(address & 0xFF);
        cs_high();

        // 确保擦除完成
        SPI1_FLASH_WaitEnd();
        HAL_Delay(10); // 增加延时，确保擦除完成
    }

    // 检查整个擦除区域是否已擦除
    rv = SPI_FLASH_VerifyErase(addr, size);
    if (rv != 0)
    {
        printf("Erase the sector error\n");
        return -1;
    }
    else
    {
        printf("Erase ok\n");
    }

    return 0;
}

3.实现跨页写

int New_SPI_FLASH_PageWrite( uint32_t addr, uint8_t *data, uint32_t size)
{
	uint32_t			first, last, page;
	uint32_t			address, ofset, len;
	uint8_t				buf[Page_Size+5];
	int					bytes = 0;

	if( addr + size > 0x400000 )
		return -1;


	/* find the fist and the last page */
	first = addr / Page_Size;
	last = ( addr + size - 1 ) / Page_Size;
	printf("Norflash Write %ld Bytes to addr@0x%lx Begin...\r\n", size, addr );

	/*Initial  address in page and offset in buffer */
	address = addr;
	ofset = 0;

	/* Start to write to all pages */
	for( page = first; page <= last; page ++)
	{
		len = Page_Size - ( address % Page_Size );
		len = len > size ? size : len;
		bytes = 0;
		printf("Norflash write addr@0x%lx, %lu bytes,and the data is %s \r\n", addr, len, data);


		buf[bytes++] = 0x02;
		buf[bytes++] = (addr & 0xFF0000) >> 16 ;
		buf[bytes++] = (addr & 0xFF00) >> 8 ;
		buf[bytes++] = (addr & 0xFF);

		/* send command and data */
		memcpy(&buf[bytes], data+ofset, len);
		bytes += len;
		printf("Norflash write addr@0x%lx, %lu bytes, data : ", address, len);
		for( int i = 4; i < bytes; i++ )
		{
			printf("0x%02x", buf[i]);
			printf("\n");
		}

		SPI1_FLASH_WriteEnable();
		cs_low();

		SPI_FLASH_Xfer(buf, NULL, bytes);

		cs_high();

		SPI1_FLASH_WaitEnd();
		addr  += len;
		ofset += len;
		size  -= len;

	}

	HAL_Delay(10);
	printf("Norflash WriteByte@0x%lx done.\r\n", addr);
	return 0;

}

 4.读取数据

void New_SPI_FLASH_BufferRead(uint32_t addr, uint8_t *buffer, uint32_t size)
{
    uint8_t cmd[4];

    cmd[0] = 0x03; // Read Data command
    cmd[1] = (addr >> 16) & 0xFF;
    cmd[2] = (addr >> 8) & 0xFF;
    cmd[3] = addr & 0xFF;

    cs_low();
    //发送读取命令和地址
    SPI_FLASH_Xfer(cmd, NULL, 4);

    //读取数据
    SPI_FLASH_Xfer(NULL, buffer, size);
    cs_high();

    // 调试输出，可选项，用于验证发送的命令和接收到的数据
/*    printf("SPI Flash Read: Address = 0x%lx, Data: ", addr);
    for (int i = 0; i < size; i++)
    {
    	printf("0x%02x ", buffer[i]);
    }
    printf("\n");
    */
}

 二、运行结果