X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/6a46f0025a4d44ca2c747745f542e8f475dd9b28..652042111c7c058bd56d9847002f166507f492d4:/LUFA/Drivers/USB/Class/Device/CDC.c

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index c86b970a3..aafe48076 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -240,6 +240,12 @@ void CDC_Device_CreateStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE*
 	fdev_set_udata(Stream, CDCInterfaceInfo);
 }
 
+void CDC_Device_CreateBlockingStream(USB_ClassInfo_CDC_Device_t* CDCInterfaceInfo, FILE* Stream)
+{
+	*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Device_putchar, CDC_Device_getchar_Blocking, _FDEV_SETUP_RW);
+	fdev_set_udata(Stream, CDCInterfaceInfo);
+}
+
 static int CDC_Device_putchar(char c, FILE* Stream)
 {
 	return CDC_Device_SendByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
@@ -253,4 +259,15 @@ static int CDC_Device_getchar(FILE* Stream)
 	return CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
 }
 
+static int CDC_Device_getchar_Blocking(FILE* Stream)
+{
+	while (!(CDC_Device_BytesReceived((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream))))
+	{
+		CDC_Device_USBTask((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
+		USB_USBTask();
+	}
+
+	return CDC_Device_ReceiveByte((USB_ClassInfo_CDC_Device_t*)fdev_get_udata(Stream));
+}
+
 #endif