/*
 *  spreadspace avr utils
 *
 *
 *  Copyright (C) 2021 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/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <stdio.h>

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

#include "fan.h"

void handle_cmd(uint8_t cmd)
{
  switch(cmd) {
  case '+': fan_speed_inc();/* printf("pwm = %d\r\n", fan_speed_get()); */ break;
  case '-': fan_speed_dec();/* printf("pwm = %d\r\n", fan_speed_get()); */ break;
  case 'r': reset2bootloader(); break;
  }
  printf("\rspeed: %5d rpm", fan_get_rpm());
}

int main(void)
{
  MCUSR &= ~(1 << WDRF);
  wdt_disable();

  cpu_init();
  jtag_disable();

  led_init();
  usbio_init();
  fan_init();
  sei();

      // rotary encoder
  DDRB &= ~((1<<PB4) | (1<<PB5));
  PORTB |= (1<<PB4) | (1<<PB5);

  led_on();
  for(;;) {
    int16_t BytesReceived = usbio_bytes_received();
    while(BytesReceived > 0) {
      int ReceivedByte = fgetc(stdin);
      if(ReceivedByte != EOF) {
        handle_cmd(ReceivedByte);
      }
      BytesReceived--;
    }

    usbio_task();
  }
}