Major changes to the XPLAINBridge software UART code for performance and reliability...

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

diff --git a/Projects/XPLAINBridge/XPLAINBridge.c b/Projects/XPLAINBridge/XPLAINBridge.c
index 4ba9fd9..c08dfe9 100644 (file)
--- a/Projects/XPLAINBridge/XPLAINBridge.c
+++ b/Projects/XPLAINBridge/XPLAINBridge.c
@@ -76,7 +76,6 @@ RingBuff_t UARTtoUSB_Buffer;
 int main(void)
 {
        SetupHardware();
-       V2Protocol_Init();
 
        RingBuffer_InitBuffer(&USBtoUART_Buffer);
        RingBuffer_InitBuffer(&UARTtoUSB_Buffer);
@@ -127,9 +126,15 @@ void UARTBridge_Task(void)
        if (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
          RingBuffer_Insert(&USBtoUART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));
        
-       /* Read bytes from the UART receive buffer into the USB IN endpoint */
-       if (UARTtoUSB_Buffer.Count)
-         CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer));
+       /* Check if the software UART flush timer has expired */
+       if (TIFR0 & (1 << TOV0))
+       {
+               TIFR0 |= (1 << TOV0);
+
+               /* Read bytes from the UART receive buffer into the USB IN endpoint */
+               while (UARTtoUSB_Buffer.Count)
+                 CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&UARTtoUSB_Buffer));
+       }
 
        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 }
@@ -174,6 +179,9 @@ void EVENT_USB_Device_ConfigurationChanged(void)
        if (CurrentFirmwareMode == MODE_USART_BRIDGE)
        {
                EndpointConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
+
+               /* Configure the UART flush timer */
+               TCCR0B = ((1 << CS02) | (1 << CS00));
        }
        else
        {
@@ -186,6 +194,9 @@ void EVENT_USB_Device_ConfigurationChanged(void)
                                                                    ENDPOINT_DIR_IN, AVRISP_DATA_EPSIZE,
                                                                    ENDPOINT_BANK_SINGLE);
                #endif
+       
+               /* Configure the V2 protocol packet handler */
+               V2Protocol_Init();
        }
 
        if (EndpointConfigSuccess)