Minor documentation improvements.

[pub/USBasp.git] / Bootloaders / DFU / BootloaderDFU.c

diff --git a/Bootloaders/DFU/BootloaderDFU.c b/Bootloaders/DFU/BootloaderDFU.c
index d7bec1f..04b52f3 100644 (file)
--- a/Bootloaders/DFU/BootloaderDFU.c
+++ b/Bootloaders/DFU/BootloaderDFU.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2011.

 
   dean [at] fourwalledcubicle [dot] com
 
   dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com
+           www.lufa-lib.org

 */
 
 /*
 */
 
 /*

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted


@@ -102,6 +102,23 @@ int main(void)
        /* Configure hardware required by the bootloader */
        SetupHardware();
 
        /* Configure hardware required by the bootloader */
        SetupHardware();
 

+       #if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
+       /* Disable JTAG debugging */
+       MCUCR |= (1 << JTD);
+       MCUCR |= (1 << JTD);
+
+       /* Enable pull-up on the JTAG TCK pin so we can use it to select the mode */
+       PORTF |= (1 << 4);
+       _delay_ms(10);
+
+       /* If the TCK pin is not jumpered to ground, start the user application instead */
+       RunBootloader = (!(PINF & (1 << 4)));
+       
+       /* Re-enable JTAG debugging */
+       MCUCR &= ~(1 << JTD);
+       MCUCR &= ~(1 << JTD);   
+       #endif
+

        /* Enable global interrupts so that the USB stack can function */
        sei();
 
        /* Enable global interrupts so that the USB stack can function */
        sei();
 


@@ -145,14 +162,21 @@ void ResetHardware(void)
        MCUCR = 0;
 }
 
        MCUCR = 0;
 }
 

-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific
- *  control requests that are not handled internally by the USB library (including the DFU commands, which are
- *  all issued via the control endpoint), so that they can be handled appropriately for the application.
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ *  the device from the USB host before passing along unhandled control requests to the library for processing
+ *  internally.

  */
  */

-void EVENT_USB_Device_UnhandledControlRequest(void)
+void EVENT_USB_Device_ControlRequest(void)

 {
        /* Get the size of the command and data from the wLength value */
        SentCommand.DataSize = USB_ControlRequest.wLength;
 {
        /* Get the size of the command and data from the wLength value */
        SentCommand.DataSize = USB_ControlRequest.wLength;

+       
+       /* Ignore any requests that aren't directed to the DFU interface */
+       if ((USB_ControlRequest.bmRequestType & (CONTROL_REQTYPE_TYPE | CONTROL_REQTYPE_RECIPIENT)) !=
+           (REQTYPE_CLASS | REQREC_INTERFACE))
+       {
+               return;
+       }

 
        switch (USB_ControlRequest.bRequest)
        {
 
        switch (USB_ControlRequest.bRequest)
        {