/*
 *  spreadspace avr utils
 *
 *
 *  Copyright (C) 2013-2015 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 <stdio.h>

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

#include "Arduino.h"
#include "PJON.h"

PJON bus(8); // Bus connection to pin 8

void error_handler(uint8_t code, uint8_t data) {
  if(code == CONNECTION_LOST) {
    printf("Connection with device ID %d is lost.\r\n", data);
  }
  if(code == PACKETS_BUFFER_FULL) {
    printf("Packet buffer is full, has now a length of %d\r\n", data);
    printf("Possible wrong bus configuration!\r\n");
    printf("higher MAX_PACKETS in PJON.h if necessary.\r\n");
  }
  if(code == MEMORY_FULL) {
    printf("Packet memory allocation failed. Memory is full.\r\n");
  }
  if(code == CONTENT_TOO_LONG) {
    printf("Content is too long, length: %d\r\n", data);
  }
  if(code == ID_ACQUISITION_FAIL) {
    printf("Can't acquire a free id %d\r\n", data);
  }
}

void recv_handler(uint8_t length, uint8_t *payload) {
  if(length == 0) {
    printf("got 0 byte message...\r\n");
    return;
  }
  led_on();
  printf("got message(%d bytes): '", length);
  for(uint16_t i = 0; i < length; ++i)
    putchar(payload[i]);
  printf("'\r\n");
  delay(30);
  led_off();
}


void handle_cmd(uint8_t cmd)
{
  switch(cmd) {
  case '1': case '2': case '3':
  case '4': case '5': case '6':
  case '7': case '8': case '9': bus.set_id(cmd - '0'); printf("device id is now: %d\r\n", cmd - '0'); break;
  case 'b': bus.send(BROADCAST, "hello world", 11); break;
  case 's': bus.send(9, "hi!", 3); break;
  case '!': reset2bootloader(); break;
  default: printf("error\r\n"); return;
  }
  printf("ok\r\n");
}

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

  cpu_init();
  led_init();
  serialio_init(57600, 0);
  sei();

  arduino_init();
  bus.begin();
  bus.set_error(error_handler);
  bus.set_receiver(recv_handler);

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

    serialio_task();
    bus.update();
    bus.receive(50);
  }
}