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我目前在使用stm32h743这个板子开发usb的主机模式的cdc通信，使用cubemx生成usb代码后测试是只要进入到
USBH_StatusTypeDef USBH_CDC_Transmit(USBH_HandleTypeDef *phost, uint8_t *pbuff, uint32_t length)
{
USBH_StatusTypeDef Status = USBH_BUSY;
CDC_HandleTypeDef *CDC_Handle = (CDC_HandleTypeDef *) phost->pActiveClass->pData;
if ((CDC_Handle->state == CDC_IDLE_STATE) || (CDC_Handle->state == CDC_TRANSFER_DATA))
{
CDC_Handle->pTxData = pbuff;
CDC_Handle->TxDataLength = length;
CDC_Handle->state = CDC_TRANSFER_DATA;
CDC_Handle->data_tx_state = CDC_SEND_DATA;
Status = USBH_OK;
#if (USBH_USE_OS == 1U)
USBH_OS_PutMessage(phost, USBH_CLASS_EVENT, 0U, 0U);
#endif /* (USBH_USE_OS == 1U) */
}
return Status;
}
的第一个
if ((CDC_Handle->state == CDC_IDLE_STATE) || (CDC_Handle->state == CDC_TRANSFER_DATA))这里
就会直接进跳转到
void HardFault_Handler(void)
{
/* USER CODE BEGIN HardFault_IRQn 0 */
/* USER CODE END HardFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_HardFault_IRQn 0 */
/* USER CODE END W1_HardFault_IRQn 0 */
}
}
试了很多方法一直没有解决，希望有大佬可以指点一下这个该怎么处理
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发表于 2025-5-21 09:29:44
发表于 2025-5-22 08:49:02
楼主
