Exemplos de USBC_Dev_ConfigEpDma em C++ (Cpp)

Exemplo n.º 1

Arquivo: usb_base_31.c Projeto: BPI-SINOVOIP/BPI-M2-bsp

/*
************************************************************************************************************
*
*                                             function
*
*    name          :
*
*    parmeters     :
*
*    return        :
*
*    note          :
*
*
************************************************************************************************************
*/
int sunxi_udc_start_recv_by_dma(uint mem_buf, uint length)
{
	uint old_ep_idx;
	uint fifo;

	old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);			//选择当前EP
	//usb控制器选择dma传输方式
	USBC_Dev_ConfigEpDma(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);
	//选择buffer
	fifo = USBC_SelectFIFO(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);
	//刷掉cache
	flush_cache(mem_buf, length);
	//使能dma传输
	sunxi_ubuf.request_size = length;
	sunxi_usb_dbg("dma start\n");
	sunxi_dma_start(sunxi_udc_source.dma_recv_channal, fifo, mem_buf, length);
	//恢复EP
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);			//恢复原有EP

	return 0;
}

Exemplo n.º 2

Arquivo: usb_base_50.c Projeto: Gucan/h3_lichee

/*
************************************************************************************************************
*
*                                             function
*
*    name          :
*
*    parmeters     :
*
*    return        :
*
*    note          :
*
*
************************************************************************************************************
*/
int sunxi_udc_start_recv_by_dma(uint mem_buf, uint length)
{
	uint old_ep_idx;

	usb_dma_trans_unaliged_bytes = length & (sizeof(int) - 1);
	length &= ~(sizeof(int) - 1);
	usb_dma_trans_unaligned_buf = (uchar *)mem_buf + length;

	old_ep_idx = USBC_GetActiveEp(sunxi_udc_source.usbc_hd);
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, SUNXI_USB_BULK_OUT_EP_INDEX);			//选择当前EP
	//usb控制器选择dma传输方式
	USBC_Dev_ConfigEpDma(sunxi_udc_source.usbc_hd, USBC_EP_TYPE_RX);

	//刷掉cache
	flush_cache(mem_buf, length);
	//使能dma传输
	sunxi_ubuf.request_size = length;
	sunxi_usb_dbg("dma start 0x%x, length 0x%x\n", mem_buf, length);
	usb_dma_start(sunxi_udc_source.dma_recv_channal, mem_buf, length);
	//恢复EP
	USBC_SelectActiveEp(sunxi_udc_source.usbc_hd, old_ep_idx);			//恢复原有EP

	return 0;
}