/*
 *   Copyright (C) 2009 Jeff Epler <jepler@unpythonic.net>
 *   This program 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 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 * BlinkM connections to Arduino
 * PWR - -- gnd -- black -- Gnd
 * PWR + -- +5V -- red   -- 5V
 * I2C d -- SDA -- green -- Analog In 4
 * I2C c -- SCK -- blue  -- Analog In 5
 */


#include "Wire.h"
#include "BlinkM_funcs.h"

#define BLINKM_ARDUINO_POWERED 1 // doesn't hurt

byte blinkm_addr = 0x09; // the default address of all BlinkMs

void setup()
{
    Serial.begin(19200);

    BlinkM_begin();
    delay(100);
    BlinkM_setFadeSpeed(blinkm_addr, 1);
    BlinkM_fadeToRGB(blinkm_addr, 255, 255, 255);
    delay(1000);
    BlinkM_setFadeSpeed(blinkm_addr, 20);
}

uint8_t colors[4][3] = {
    {0,16,0},      // OK
    {0,255,255}, // INFO
    {255,255,0},   // WARNING
    {255,0,0}, // ERROR
};

static uint8_t level = 3, oldlevel=-1;
static unsigned long last_message = 0x80000000ul;

void loop()
{
    unsigned long now = millis();

    if(Serial.available()) {
        level = Serial.read();
        last_message = now;
    } else if(now - last_message > 20*1000 && level < 3) {
        last_message = now; // well, sorta
        level ++;
    }

   // if(level != oldlevel) {
        level = level % 4;
        BlinkM_fadeToRGB(blinkm_addr,
            colors[level][0], colors[level][1], colors[level][2]);
        oldlevel = level;
    //}
    delay(50);
    ///digitalWrite(13, !digitalRead(13));
}