Fix incorrect ADEFS and CPPDEFS entries in the DFU and CDC class bootloader makefiles.

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

diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c
index 24aa383..15cb87d 100644 (file)
--- a/Projects/XPLAINBridge/XPLAINBridge.c
+++ b/Projects/XPLAINBridge/XPLAINBridge.c
@@ -3,7 +3,7 @@
      Copyright (C) Dean Camera, 2010.
 
   dean [at] fourwalledcubicle [dot] com
-      www.fourwalledcubicle.com
+           www.lufa-lib.org
 */
 
 /*
@@ -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 */
@@ -206,8 +212,8 @@ void EVENT_USB_Device_ConfigurationChanged(void)
        LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 }
 
-/** Event handler for the library USB Unhandled Control Request event. */
-void EVENT_USB_Device_UnhandledControlRequest(void)
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
 {
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)
          CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);