Fixed possible buffer overrun in the XPLAINBridge project when in serial bridge mode.

[pub/USBasp.git] / Projects / XPLAINBridge / XPLAINBridge.c

diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c
index f08dfc5..3bbc0bc 100644 (file)
--- a/Projects/XPLAINBridge/XPLAINBridge.c
+++ b/Projects/XPLAINBridge/XPLAINBridge.c
@@ -120,7 +120,7 @@ void UARTBridge_Task(void)
          return;
 
        /* Read bytes from the USB OUT endpoint into the UART transmit buffer */
-       if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
+       if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface) && !(RingBuffer_IsFull(&USBtoUART_Buffer)))
          RingBuffer_AtomicInsert(&USBtoUART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
        
        /* Check if the software UART flush timer has expired */