增加BDW01-STM32L496VG开发板

board/BDW01-STM32L496VG/BSP/Src/user_usb_uart.c

@@ -0,0 +1,77 @@
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "user_usb_uart.h"
+#include "usb_host.h"
+#include "usbh_cdc.h"
+
+uint8_t da_flag =0;
+
+uint8_t aUsbRxBuffer[MAX_USBRX_BUFFER_LENGTH];
+uint8_t bUsbRxBuffer[CUSB_BUFFER_NUMBER][MAX_USBRX_BUFFER_LENGTH+1];
+uint8_t bUsbBufLength[CUSB_BUFFER_NUMBER];
+
+uint8_t CurrentUsbBufNumPoint = 0;
+
+extern USBH_HandleTypeDef hUsbHostFS;
+extern uint8_t Recv_buf[MAX_USBRX_BUFFER_LENGTH];
+
+
+void Usb_Buff_Init(void)
+{
+	for(int ti=0; ti< CUSB_BUFFER_NUMBER; ti++)
+	{
+		bUsbBufLength[ti] = 0;
+		memset(bUsbRxBuffer[ti],0,sizeof(bUsbRxBuffer[ti]));
+	}
+}
+
+uint8_t ReadUsbBuffData(uint8_t *dBuffer, uint8_t len)
+{
+	uint8_t buflen =0;
+	if(bUsbBufLength[CurrentUsbBufNumPoint]>0)
+	{
+	  memset(dBuffer,0,len);
+		buflen = bUsbBufLength[CurrentUsbBufNumPoint];
+		memcpy(dBuffer,(const char *)bUsbRxBuffer[CurrentUsbBufNumPoint],buflen);
+		memset(bUsbRxBuffer[CurrentUsbBufNumPoint],0,sizeof(bUsbRxBuffer[CurrentUsbBufNumPoint]));
+		bUsbBufLength[CurrentUsbBufNumPoint] = 0;
+		CurrentUsbBufNumPoint++;
+		if(CurrentUsbBufNumPoint >= CUSB_BUFFER_NUMBER)
+				CurrentUsbBufNumPoint = 0;
+	}	
+	return buflen;
+}
+//
+void Check_empty_buffer()
+{
+   uint8_t i; 
+	for(i=0;i<CUSB_BUFFER_NUMBER;i++)
+	{
+		if(bUsbBufLength[CurrentUsbBufNumPoint]>0)
+		{
+			CurrentUsbBufNumPoint++;
+			if(CurrentUsbBufNumPoint >= CUSB_BUFFER_NUMBER)
+				CurrentUsbBufNumPoint=0;
+		}
+		else
+			break;		
+	}
+}
+//
+void USBH_CDC_ReceiveCallback(USBH_HandleTypeDef *phost)
+{
+	uint32_t i,rec_len=0;
+	USBH_CDC_GetLastReceivedDataSize(phost);
+	rec_len = strlen(aUsbRxBuffer);
+	if(rec_len>0)
+	{				
+		Check_empty_buffer();
+		memcpy(bUsbRxBuffer[CurrentUsbBufNumPoint],aUsbRxBuffer,rec_len);
+		bUsbBufLength[CurrentUsbBufNumPoint] = rec_len;		
+		memset(aUsbRxBuffer,0,sizeof(aUsbRxBuffer));
+	}
+}
+
+