/*
 *  spreadspace avr utils
 *
 *
 *  Copyright (C) 2013-2016 Christian Pointner <equinox@spreadspace.org>
 *
 *  This file is part of spreadspace avr utils.
 *
 *  spreadspace avr utils is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  any later version.
 *
 *  spreadspace avr utils is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
 */


#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <util/delay.h>
#include <stdio.h>

#include "usbdrv.h"
#include "oddebug.h"

#include "util.h"
#include "led.h"


void vusbio_init(void)
{
  odDebugInit();
  USBOUT &= ~USBMASK;
  USBDDR &= ~USBMASK;
  usbInit();

  usbDeviceDisconnect();
  uchar i = 0;
  while(--i){
    wdt_reset();
    _delay_ms(1);
  }
  usbDeviceConnect();
}

void vusbio_task(void)
{
  usbPoll();
}

usbMsgLen_t usbFunctionSetup(uchar data[8])
{
  usbRequest_t *req = (void *)data;
  static uchar buf[4];  /* buffer must stay valid when usbFunctionSetup returns */

  switch(req->bRequest) {
  case 0: { /* echo */
    buf[0] = req->wValue.bytes[0];
    buf[1] = req->wValue.bytes[1];
    buf[2] = req->wIndex.bytes[0];
    buf[3] = req->wIndex.bytes[1];
    usbMsgPtr = (usbMsgPtr_t)buf;
    return 4;
  }
  case 1: {
    if(req->wValue.bytes[0] & 1) {
      led_on();
    } else {
      led_off();
    }
    break;
  }
  }
  return 0;
}

int main(void)
{
  wdt_enable(WDTO_1S);

  cpu_init();
  vusbio_init();
  led_init();
  sei();

  for(;;) {
    wdt_reset();
    vusbio_task();
  }
}