Altered the CDC Deivice and Host Class drivers' receive byte routines, so that no data is indicated by a negative return value.

Added auto flushing of OUT data to the CDC Host Class driver's USBTask function to automatically flush the send pipe buffer.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@1422 d5102386-fcda-11dd-9fdb-3debd5008f28

1 files changed, 4 insertions, 4 deletions

diff --git a/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c b/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c
index cc8f92cc..53d7ce9f 100644
--- a/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c
+++ b/Demos/Device/ClassDriver/DualVirtualSerial/DualVirtualSerial.c
@@ -101,12 +101,12 @@ int main(void)
 		CheckJoystickMovement();
 
 		/* Discard all received data on the first CDC interface */
-		while (CDC_Device_BytesReceived(&VirtualSerial1_CDC_Interface))
-		  CDC_Device_ReceiveByte(&VirtualSerial1_CDC_Interface);
+		CDC_Device_ReceiveByte(&VirtualSerial1_CDC_Interface);
 
 		/* Echo all received data on the second CDC interface */
-		while (CDC_Device_BytesReceived(&VirtualSerial2_CDC_Interface))
-		  CDC_Device_SendByte(&VirtualSerial2_CDC_Interface, CDC_Device_ReceiveByte(&VirtualSerial2_CDC_Interface));
+		int16_t ReceivedByte; = CDC_Device_ReceiveByte(&VirtualSerial2_CDC_Interface);
+		if (!(ReceivedByte < 0))
+		  CDC_Device_SendByte(&VirtualSerial2_CDC_Interface, (uint8_t)ReceivedByte);
 		  
 		CDC_Device_USBTask(&VirtualSerial1_CDC_Interface);
 		CDC_Device_USBTask(&VirtualSerial2_CDC_Interface);