Increased throughput in the USBtoSerial project now that data transmission is non...

diff --git a/LUFA/DoxygenPages/ChangeLog.txt b/LUFA/DoxygenPages/ChangeLog.txt
index bf29039..ed68a1d 100644 (file)
--- a/LUFA/DoxygenPages/ChangeLog.txt
+++ b/LUFA/DoxygenPages/ChangeLog.txt
@@ -22,7 +22,7 @@
   *   - Added workaround for broken VBUS detection on AVR8 devices when a bootloader starts the application
   *     via a software jump without first turning off the OTG pad (thanks to Simon Inns)
   *  - Library Applications:
   *   - Added workaround for broken VBUS detection on AVR8 devices when a bootloader starts the application
   *     via a software jump without first turning off the OTG pad (thanks to Simon Inns)
   *  - Library Applications:

-  *   -  <i>None</i>
+  *   -  Increased throughput in the USBtoSerial project now that data transmission is non-blocking (thanks to Joseph Lacerte)

   *
   *  <b>Fixed:</b>
   *  - Core:
   *
   *  <b>Fixed:</b>
   *  - Core:

diff --git a/Projects/USBtoSerial/USBtoSerial.c b/Projects/USBtoSerial/USBtoSerial.c
index 5fd7192..233a9af 100644 (file)
--- a/Projects/USBtoSerial/USBtoSerial.c
+++ b/Projects/USBtoSerial/USBtoSerial.c
@@ -106,17 +106,14 @@ int main(void)
 
                /* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
                uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
 
                /* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
                uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);

-               if ((TIFR0 & (1 << TOV0)) || (BufferCount > (uint8_t)(sizeof(USARTtoUSB_Buffer_Data) * .75)))
+               if (BufferCount)

                {
                        Endpoint_SelectEndpoint(VirtualSerial_CDC_Interface.Config.DataINEndpoint.Address);
                {
                        Endpoint_SelectEndpoint(VirtualSerial_CDC_Interface.Config.DataINEndpoint.Address);

-                       
+

                        /* Check if a packet is already enqueued to the host - if so, we shouldn't try to send more data
                         * until it completes as there is a chance nothing is listening and a lengthy timeout could occur */
                        if (Endpoint_IsINReady())
                        {
                        /* Check if a packet is already enqueued to the host - if so, we shouldn't try to send more data
                         * until it completes as there is a chance nothing is listening and a lengthy timeout could occur */
                        if (Endpoint_IsINReady())
                        {

-                               /* Clear flush timer expiry flag */
-                               TIFR0 |= (1 << TOV0);
-                       

                                /* Never send more than one bank size less one byte to the host at a time, so that we don't block
                                 * while a Zero Length Packet (ZLP) to terminate the transfer is sent if the host isn't listening */
                                uint8_t BytesToSend = MIN(BufferCount, (CDC_TXRX_EPSIZE - 1));
                                /* Never send more than one bank size less one byte to the host at a time, so that we don't block
                                 * while a Zero Length Packet (ZLP) to terminate the transfer is sent if the host isn't listening */
                                uint8_t BytesToSend = MIN(BufferCount, (CDC_TXRX_EPSIZE - 1));


@@ -159,9 +156,6 @@ void SetupHardware(void)
        /* Hardware Initialization */
        LEDs_Init();
        USB_Init();
        /* Hardware Initialization */
        LEDs_Init();
        USB_Init();

-
-       /* Start the flush timer so that overflows occur rapidly to push received bytes to the USB interface */
-       TCCR0B = (1 << CS02);

 }
 
 /** Event handler for the library USB Connection event. */
 }
 
 /** Event handler for the library USB Connection event. */