X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/7c8d16fd7adae430f94004048a7702b7338f5eb1..24e621a8d8424721ed21ce329d2a28dbf8c35343:/Projects/USBtoSerial/USBtoSerial.c

diff --git a/Projects/USBtoSerial/USBtoSerial.c b/Projects/USBtoSerial/USBtoSerial.c
index 2c2d0c006..d7df3d91f 100644
--- a/Projects/USBtoSerial/USBtoSerial.c
+++ b/Projects/USBtoSerial/USBtoSerial.c
@@ -82,13 +82,9 @@ int main(void)
 	for (;;)
 	{
 		/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
-		for (uint8_t DataBytesRem = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)
-		{
-			if (RingBuffer_IsFull(&USBtoUSART_Buffer))
-			  break;
-			  
-			RingBuffer_AtomicInsert(&USBtoUSART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
-		}
+		int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
+		if (!(ReceivedByte < 0) && !(RingBuffer_IsFull(&USBtoUSART_Buffer)))
+		  RingBuffer_AtomicInsert(&USBtoUSART_Buffer, (uint8_t)ReceivedByte);		
 		
 		/* Check if the software USART flush timer has expired */
 		if (TIFR0 & (1 << TOV0))