michi/qmk_firmware
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fixed USBtoSerial and XPLAINBridge demos discarding data from the PC if the send buffer becomes full.

Browse Source
This commit is contained in:
Dean Camera
2010-11-03 11:24:34 +00:00
parent 8f9b5ae00d
commit 85cf202737
6 changed files with 22 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
Projects/XPLAINBridge/XPLAINBridge.c
View File

@@ -119,15 +119,21 @@ void UARTBridge_Task(void)
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Read bytes from the USB OUT endpoint into the UART transmit buffer */
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
if (!(ReceivedByte < 0) && !(RingBuffer_IsFull(&USBtoUART_Buffer)))
RingBuffer_Insert(&USBtoUART_Buffer, ReceivedByte);
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if (!(RingBuffer_IsFull(&USBtoUART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the UART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUART_Buffer, ReceivedByte);
}
/* Check if the UART receive buffer flush timer has expired or buffer is nearly full */
RingBuff_Count_t BufferCount = RingBuffer_GetCount(&UARTtoUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > 200))
{
/* Clear flush timer expiry flag */
TIFR0 |= (1 << TOV0);
/* Read bytes from the UART receive buffer into the USB IN endpoint */