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/**
 * CanCLCD.
 * For HD44780- and KS0073-based LCD displays
 * Prints sensor data and other interesting things.
 *
 * @date    2006-12-11
 * @author  Erik Larsson
 *
 * TODO Fix more types of output: relay status, mail recieved etc.
 *
 */

/*-----------------------------------------------------------------------------
 * Includes
 *---------------------------------------------------------------------------*/
/* system files */
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
/* lib files */
#include <bios.h>
#include <lcd_HD44780.h>
/* funcdefs */
//#include <eqlazer_funcdefs.h>

/* defines */
#define SIZE_X  20
#define SIZE_Y  4

//#define BUFFER_SIZE 20
#define TRUE 1
#define FALSE 0

#define LEFT    0x01
#define RIGHT   0x02

Can_Message_t rxMsg;
Can_Message_t txMsg;


uint8_t     msg_received = FALSE;

uint8_t rot_lastdir = 0,
        rot_laststate = 0;


void can_receive(Can_Message_t *msg){
// FIXME
}


ISR( PCINT0_vect ){ // For ROTENC_A and ROTENC_B
    uint8_t rot_data = 0;

    txMsg.Id=0xA000000;
    txMsg.DataLength=2;

    if(PINB&(1<<PB7)){
        rot_data |= 0x01;
    }
    if(PINB&(1<<PB0)){
        rot_data |= 0x02;
    }

    if( rot_data==0 || rot_data==3 ){
        if( rot_data==0 && rot_laststate!=rot_data ){
            if( rot_lastdir&0x01 ){
                // Moving right
                txMsg.Data.bytes[0]=RIGHT;
                txMsg.Data.bytes[1] = (PIND&(1<<PD2))?0:1;
                bios->can_send(&txMsg);
            }else{
                // Moving left
                txMsg.Data.bytes[0]=LEFT;
                txMsg.Data.bytes[1] = (PIND&(1<<PD2))?0:1;
                bios->can_send(&txMsg);
            }
        }
        rot_laststate = rot_data;
    }else{
        rot_lastdir = rot_data;
    }
}

ISR( PCINT2_vect ){ // For ROTENC_BTN
    lcd_puts("a");
}

    void send_dimensions();

/*-----------------------------------------------------------------------------
 * Main Program
 *---------------------------------------------------------------------------*/
int main(void) {

//    char buffer[ BUFFER_SIZE ];
    /*
     * Initialize rotaryencoders and buttons
     */
    /* Set as input */
    DDRD &= ~(1<<DDD2);
    DDRB &= ~((1<<DDB7)|(1<<DDB0));
    /* Enable pull-up */
    PORTD |= (1<<PD2);
    PORTB |= (1<<PB7)|(1<<PB0);
    /* Enable IO-pin interrupt */
    PCICR |= (1<<PCIE2)|(1<<PCIE0);
    /* Unmask PB7, PB0 and PD2 */
    PCMSK2 |= (1<<PCINT18);
    PCMSK0 |= (1<<PCINT7)|(1<<PCINT0);

    txMsg.ExtendedFlag=1;
    txMsg.RemoteFlag=0;

    sei();
    bios->can_callback = &can_receive;

    lcd_init( LCD_DISP_ON );
    lcd_clrscr();

    send_dimensions();

    /* main loop */
    while(1){
        /* check if any messages have been received */
        if(msg_received){

            msg_received = FALSE;
        }
    }
}

void send_dimensions(){
    txMsg.Id=0xA000001;
    txMsg.Data.bytes[0] = SIZE_X;
    txMsg.Data.bytes[1] = SIZE_Y;
    txMsg.DataLength = 2;
    bios->can_send(&txMsg);
}