X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/c1782ac024a42c06680f511c939e653aacdb411d..aaa0bed556d0fa424b831418a7ce2531653a8b03:/LUFA/Drivers/USB/Class/Host/CDC.c

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index 6aceccaf1..2d42be65f 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -340,16 +340,32 @@ void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, FILE* Str
 	fdev_set_udata(Stream, CDCInterfaceInfo);
 }
 
+void CDC_Host_CreateBlockingStream(USB_ClassInfo_CDC_Host_t* CDCInterfaceInfo, FILE* Stream)
+{
+	*Stream = (FILE)FDEV_SETUP_STREAM(CDC_Host_putchar, CDC_Host_getchar_Blocking, _FDEV_SETUP_RW);
+	fdev_set_udata(Stream, CDCInterfaceInfo);
+}
+
 static int CDC_Host_putchar(char c, FILE* Stream)
 {
-	CDC_Host_SendByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream), c);
-	return 0;
+	return CDC_Host_SendByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
 }
 
 static int CDC_Host_getchar(FILE* Stream)
 {
 	if (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
-	  return -1;
+	  return _FDEV_EOF;
+
+	return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+}
+
+static int CDC_Host_getchar_Blocking(FILE* Stream)
+{
+	while (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
+	{
+		CDC_Host_USBTask((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+		USB_USBTask();
+	}
 
 	return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
 }