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///////////////////////////////////////////////////////////////////////////////
//  protocol.c - Home automation library
//
//  Copyright (C) 2009 Jochen Toppe <jochen@jtoee.com>. All right reserved.
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License, or (at your option) any later version.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
///////////////////////////////////////////////////////////////////////////////


//
// relay receiver hardware setup:
//
// 16MHz external clocked attiny2313
// RX:  data in of rf receiver @ 1200 baud
//
// PORTB:
//  PB0 - relay 0
//  PB1 - relay 1
//  PB2 - relay 2
//  PB3 - relay 3
//  PB4 - lock status LED
//  PB5 - command received LED
//
// Device id select via PD2,3,4,5 by pulling them to ground (they're pulled
// up to high via the internal avr pull-up resistors)


#ifdef TEST
#include <stdio.h>
#else
#include <avr/io.h>
#include <util/delay.h>
#endif

#include "../common/config.h"
#include "../common/uart.h"
#include "../common/commands.h"
#include "../common/protocol.h"
#include "../common/commandFilter.h"
#include "../common/util.h"

// MAX number of ports (0..3) for relays
#define MAX_PORT 4

#define COMMAND_RECEIVED_LED  5

#ifndef TEST
void doHandleCommand(struct Command *aCmd)
{
    switch (aCmd->command)
    {
	case COMMAND_RESET:
	    // reset all four ports (not! the lock LED)
            PORTB &= 0xF0;
            break;
        case COMMAND_LOCK:
            lock();
            PORTB |= 0x10;
            break;
        case COMMAND_UNLOCK:
            unlock();
            PORTB &= 0xEF;
            break;
        case COMMAND_ON:
            // only execute if data outlining port actually present
            if (aCmd->dataSize != 0 && aCmd->data[0] < MAX_PORT)
                PORTB |= (1<<aCmd->data[0]);
            break;
        case COMMAND_OFF:
            // only execute if data outlining port actually present
            if (aCmd->dataSize != 0 && aCmd->data[0] < MAX_PORT)
                PORTB &= ~(1<<aCmd->data[0]);
            break;
        case COMMAND_TOGGLE:
            // only execute if data outlining port actually present
            if (aCmd->dataSize != 0 && aCmd->data[0] < MAX_PORT)
                PORTB ^= 1 << aCmd->data[0];
            break;
        case COMMAND_PULSE:
            // only execute if data outlining port actually present
            if (aCmd->dataSize != 0 && aCmd->data[0] < MAX_PORT)
            {
                PORTB |= (1<<aCmd->data[0]);
                if (aCmd->dataSize !=2)
                    sleep_rf(100); // default to 100ms
                else
                    sleep_rf(aCmd->data[1]);
                PORTB &= ~(1<<aCmd->data[0]);
            }
            break;
    } 
}

// determine the device id
void determine_device_id(void)
{
  // set pins 2,3,4,5 to IN by turning the bits off
  DDRD &= 0xC3;
  // enable pull-ups
  PORTD |= 0x3C;
  // settle
  _delay_ms(10);
  // get bits 2-5 into one number
  setDeviceId((PIND >> 2) & 0xF);
}

//
// code for the relay receiver module.
//

int main(void)
{
    // register the command handler
    setCommandHandler(doHandleCommand);
    // set port B to output only
    DDRB = 0xFF;
    // turn off all pins on port b
    PORTB = 0x0;

    // determine device id
    determine_device_id();

    // turn on rf
    uart_initialize(1,1);

    // handle commands
    while (1)
    {
        if (uart_has_bytes())
        {
            uint8_t havePackage = parse_incoming(uart_receive());
            if (havePackage)
            {
                enable_bit(PORTB, COMMAND_RECEIVED_LED);
                // process command
                filterCommand(&_incomingCommand);
                //
                _delay_ms(50);
                disable_bit(PORTB, COMMAND_RECEIVED_LED);  
            }
        }
    }
    return 0;
}

#else
// unit tests
// ////////////////

extern int commonSuite();
int main(void)
{
    return commonSuite();
}

#endif