diff options
Diffstat (limited to 'Projects/XPLAINBridge/XPLAINBridge.c')
| -rw-r--r-- | Projects/XPLAINBridge/XPLAINBridge.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c index 7c824ec93..912e68367 100644 --- a/Projects/XPLAINBridge/XPLAINBridge.c +++ b/Projects/XPLAINBridge/XPLAINBridge.c @@ -136,9 +136,19 @@ void UARTBridge_Task(void) /* Clear flush timer expiry flag */ TIFR0 |= (1 << TOV0); - /* Read bytes from the UART receive buffer into the USB IN endpoint */ + /* Read bytes from the USART receive buffer into the USB IN endpoint */ while (BufferCount--) - CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer)); + { + /* Try to send the next byte of data to the host, abort if there is an error without dequeuing */ + if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface, + RingBuffer_Peek(&UARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError) + { + break; + } + + /* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */ + RingBuffer_Remove(&UARTtoUSB_Buffer); + } } CDC_Device_USBTask(&VirtualSerial_CDC_Interface); |