From 46677b45896a955b8c62a46d624750213a00b1dd Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sun, 12 Dec 2010 16:50:45 +0000 Subject: Fixed possible lost data in the XPLAINBridge, USBtoSerial and Benito projects when the host exceeds the packet timeout period on received packets as set by USB_STREAM_TIMEOUT_MS (thanks to Justin Rajewski). --- Projects/USBtoSerial/USBtoSerial.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'Projects/USBtoSerial/USBtoSerial.c') diff --git a/Projects/USBtoSerial/USBtoSerial.c b/Projects/USBtoSerial/USBtoSerial.c index 1dfd70896d..477dd44f5a 100644 --- a/Projects/USBtoSerial/USBtoSerial.c +++ b/Projects/USBtoSerial/USBtoSerial.c @@ -100,7 +100,17 @@ int main(void) /* Read bytes from the USART receive buffer into the USB IN endpoint */ while (BufferCount--) - CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&USARTtoUSB_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(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError) + { + break; + } + + /* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */ + RingBuffer_Remove(&USARTtoUSB_Buffer); + } } /* Load the next byte from the USART transmit buffer into the USART */ -- cgit v1.2.3