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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).

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This commit is contained in:
Dean Camera
2010-12-12 16:50:45 +00:00
parent b67f9f3669
commit 46677b4589
4 changed files with 40 additions and 8 deletions
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Projects/XPLAINBridge/XPLAINBridge.c
+12 -2
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@@ -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);