- static rt_err_t _write_block(struct rt_spi_device* device, const void * buffer, uint32_t block_size, uint8_t token)
- {
- struct rt_spi_message message;
- uint8_t send_buffer[16];
- rt_memset(send_buffer, DUMMY, sizeof(send_buffer));
- send_buffer[sizeof(send_buffer) - 1] = token;
- /* send start block token */
- {
- /* initial message */
- message.send_buf = send_buffer;
- message.recv_buf = RT_NULL;
- message.length = sizeof(send_buffer);
- message.cs_take = message.cs_release = 0;
- /* transfer message */
- device->bus->ops->xfer(device, &message);
- }
- /* send data */
- {
- /* initial message */
- message.send_buf = buffer;
- message.recv_buf = RT_NULL;
- message.length = block_size;
- message.cs_take = message.cs_release = 0;
- /* transfer message */
- device->bus->ops->xfer(device, &message);
- }
- /* put crc and get data response */
- {
- uint8_t recv_buffer[3];
- uint8_t response;
- /* initial message */
- message.send_buf = send_buffer;
- message.recv_buf = recv_buffer;
- message.length = sizeof(recv_buffer);
- message.cs_take = message.cs_release = 0;
- /* transfer message */
- device->bus->ops->xfer(device, &message);
- // response = 0x0E & recv_buffer[2];
- response = MSD_GET_DATA_RESPONSE(recv_buffer[2]);
- if(response != MSD_DATA_OK)
- {
- MSD_DEBUG("[err] write block fail! data response : 0x%02X\r\n", response);
- return RT_ERROR;
- }
- }
- /* wati ready */
- [color=Red]return _wait_ready(device);[/color]
- }
在函数最后 return _wait_ready(device)处时间超时，一直找不到是什么原因。还请各位大侠予以帮助，谢谢
| 
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