qmk_firmware/Projects/AVRISP-MKII/AVRISP-MKII.c

/*
             LUFA Library
     Copyright (C) Dean Camera, 2011.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  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
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaim all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Main source file for the AVRISP project. This file contains the main tasks of
 *  the project and is responsible for the initial application hardware configuration.
 */

#include "AVRISP-MKII.h"

/** Main program entry point. This routine contains the overall program flow, including initial
 *  setup of all components and the main program loop.
 */
int main(void)
{
	SetupHardware();
	V2Protocol_Init();

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	GlobalInterruptEnable();
	
	for (;;)
	{
		#if (BOARD == BOARD_USBTINYMKII)
			/* On the USBTINY-MKII board target, there is a secondary LED which indicates the current selected
			   power mode - either VBUS, or sourced from the VTARGET pin of the programming connectors */
			LEDs_ChangeLEDs(LEDS_LED3, (PIND & (1 << 0)) ? 0 : LEDS_LED3);
		#endif

		AVRISP_Task();
		USB_USBTask();
	}
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
	#if (ARCH == ARCH_AVR8)
		/* Disable watchdog if enabled by bootloader/fuses */
		MCUSR &= ~(1 << WDRF);
		wdt_disable();

		/* Disable clock division */
		clock_prescale_set(clock_div_1);
	#elif (ARCH == ARCH_UC3)
		/* Select slow startup, external high frequency crystal attached to OSC0 */
		AVR32_PM.OSCCTRL0.mode    = 7;
		AVR32_PM.OSCCTRL0.startup = 6;
		AVR32_PM.MCCTRL.osc0en    = true;
		while (!(AVR32_PM.POSCSR.osc0rdy));

		/* Switch CPU core to use OSC0 as the system clock */
		AVR32_PM.MCCTRL.mcsel     = 1;

		/* Start PLL1 to feed into the USB generic clock module */
		AVR32_PM.PLL[1].pllmul    = (F_USB / F_CPU) ? (((F_USB / F_CPU) - 1) / 2) : 0;
		AVR32_PM.PLL[1].plldiv    = 0;
		AVR32_PM.PLL[1].pllosc    = 0;	
		AVR32_PM.PLL[1].pllen     = true;
		while (!(AVR32_PM.POSCSR.lock1));
	
		/* Configure interrupt management peripheral */
//		INTC_Init();
		INTC_RegisterGroupHandler(AVR32_USBB_IRQ, AVR32_INTC_INT0, USB_GEN_vect);	
	#endif
	
	/* Hardware Initialization */
	LEDs_Init();
	USB_Init();
}

/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
	bool ConfigSuccess = true;

	/* Setup AVRISP Data Endpoint(s) */
	ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT,
	                                            AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);

	#if defined(LIBUSB_DRIVER_COMPAT)
	ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN,
	                                            AVRISP_DATA_EPSIZE, ENDPOINT_BANK_SINGLE);
	#endif

	/* Indicate endpoint configuration success or failure */
	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}

/** Processes incoming V2 Protocol commands from the host, returning a response when required. */
void AVRISP_Task(void)
{
	/* Device must be connected and configured for the task to run */
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	V2Params_UpdateParamValues();

	Endpoint_SelectEndpoint(AVRISP_DATA_OUT_EPNUM);

	/* Check to see if a V2 Protocol command has been received */
	if (Endpoint_IsOUTReceived())
	{
		LEDs_SetAllLEDs(LEDMASK_BUSY);

		/* Pass off processing of the V2 Protocol command to the V2 Protocol handler */
		V2Protocol_ProcessCommand();

		LEDs_SetAllLEDs(LEDMASK_USB_READY);
	}
}