C++ (Cpp) USBC_Dev_ClearEpDma Examples

Example #1

File: usb_base_50.c Project: Gucan/h3_lichee

/*
************************************************************************************************************
*
*                                             function
*
*    name          :
*
*    parmeters     :
*
*    return        :
*
*    note          :
*
*
************************************************************************************************************
*/
static void __usb_recv_by_dma_isr(void *p_arg)
{
	u32 old_ep_idx;

	old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);			//选择RXEP

	//选择使用IO方式搬运数据
	sunxi_usb_dbg("select io mode to transfer data\n");
	USBC_Dev_ClearEpDma(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);

	if(usb_dma_trans_unaliged_bytes)
	{
		uint fifo, this_len;

		this_len = USBC_ReadLenFromFifo(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
		fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
		USBC_ReadPacket(sunxi_udc_source.usbc_hd, fifo, this_len, usb_dma_trans_unaligned_buf);
		__usb_readcomplete(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1);		//返回状态
		usb_dma_trans_unaliged_bytes = 0;
	}
	//如果当前dma传输的不是完整包，则需要手动清除中断
	if(sunxi_ubuf.request_size % sunxi_udc_source.bulk_ep_max)
	{
		USBC_Dev_ReadDataStatus(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1);
		//printf("clear rx pending manually\n");
	}

	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);

	sunxi_udev_active->dma_rx_isr(p_arg);
}

Example #2

File: usb_base_31.c Project: BPI-SINOVOIP/BPI-M2-bsp

/*
************************************************************************************************************
*
*                                             function
*
*    name          :
*
*    parmeters     :
*
*    return        :
*
*    note          :
*
*
************************************************************************************************************
*/
static void __usb_recv_by_dma_isr(void *p_arg)
{
	u32 old_ep_idx;

	old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);			//选择RXEP
	//如果当前dma传输的不是完整包，则需要手动清除中断
	//printf("sunxi_ubuf.request_size=0x%x\n",sunxi_ubuf.request_size);
	if(sunxi_ubuf.request_size % sunxi_udc_source.bulk_ep_max)
	{
		USBC_Dev_ReadDataStatus(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX, 1);
		//printf("clear rx pending manually\n");
	}
	//选择使用IO方式搬运数据
	sunxi_usb_dbg("select io mode to transfer data\n");
	USBC_Dev_ClearEpDma(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);

	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);

	sunxi_udev_active->dma_rx_isr(p_arg);
}