STM32之USB host库：USBH_Process学习理解

void USBH_Process(USB_OTG_CORE_HANDLE *pdev , USBH_HOST *phost) {   volatile USBH_Status status = USBH_FAIL;         if ((HCD_IsDeviceConnected(pdev) == 0)&& (phost->gState != HOST_IDLE))  // 如果 未链接&&

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