RT1064 usb cdc host发送失败

spyyf · 发表于 2024-8-7 18:14:36

一块板子使用CDC host demo,一块使用CDC dev demo通信正常，单独使用CDC host 接cdc设备（用的jlink测试）就会发送失败
然后发现在异常的时候是没有进USB_HostCDCInterruptCallback回调函数的
if (USB_HostCdcInterruptRecv(cdcInstance->classHandle, (uint8_t *)&cdcInstance->state,
                                       sizeof(cdcInstance->state), USB_HostCdcInterruptCallback,
                                       &g_cdc) != kStatus_USB_Success)
         {
            usb_echo("Error in USB_HostCdcInterruptRecv: %x\r\n", status);
         }

正常（有打印“get serial”，进了回调函数）

异常（无打印，没进回调函数）

阅读全文

spyyf · 发表于 2024-8-8 09:13:35

void USB_HostCdcInterruptCallback(void *param, uint8_t *data, uint32_t dataLength, usb_status_t status)
{
usb_host_cdc_acm_state_struct_t *state = (usb_host_cdc_acm_state_struct_t *)data;

if (status != kStatus_USB_Success)
{
      if (status == kStatus_USB_TransferCancel)
      {
         usb_echo("cdc transfer cancel\r\n");
      }
      else
      {
         usb_echo("cdc control transfer error\r\n");
      }
}
else
{ /*more information about SerialState ,please pstn spec 6.5.4 */
      usb_echo("get serial state value = %d\r\n", state->bmstate);
}
}