Subversion Repositories HomeAutomation

/**

 * CanCLCD. Simple version.

 * For HD44780- and KS0073-based LCD displays

 *

 * @date    2006-12-11

 * @author  Erik Larsson

 *

 */

/*-----------------------------------------------------------------------------

 * 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 <funcdefs.h>

/* defines */

#define SIZE_X  20

#define SIZE_Y  4

#define SIZE_LCD LCD_SIZE_20x4

#define BUFFER_SIZE SIZE_X

#define TRUE 1

#define FALSE 0

#define LEFT    0x01

#define RIGHT   0x02

Can_Message_t txMsg;

char incoming_text[ BUFFER_SIZE ];

uint8_t msg_received = FALSE;

uint8_t rot_lastdir = 0,

        rot_laststate = 0;

    char buffer[ BUFFER_SIZE ];

void send_dimensions();

void can_receive(Can_Message_t *msg){

    uint32_t act;

    uint8_t m, act_type, lcd_action, lcd_size;

    if( ((msg->Id & CLASS_MASK)>> CLASS_MASK_BITS) == CLASS_ACT ){

        act = (msg->Id & TYPE_MASK) >> TYPE_MASK_BITS;

        act_type = (act & ACT_TYPE_MASK) >> ACT_TYPE_BITS;

        lcd_action = (act & LCD_ACTION_MASK) >> LCD_ACTION_BITS;

        lcd_size = (act & LCD_SIZE_MASK) >> LCD_SIZE_BITS;

    }

    if( act_type == ACT_TYPE_LCD && (lcd_size == SIZE_LCD || lcd_size == LCD_SIZE_ALL)){

        switch( lcd_action ){

            case LCD_ACTION_CLR:

                    // Clear LCD

                    lcd_clrscr();

                break;

            case LCD_ACTION_CURS:

                    // Move cursor

                    lcd_gotoxy( msg->Data.bytes[0],msg->Data.bytes[1] );

                break;

            case LCD_ACTION_GET_SIZE:

                    // Request LCD dimension

                    send_dimensions();

                break;

            case LCD_ACTION_TEXT:

                // Print text to LCD

                for(m=0;m<msg->DataLength;m++){

                    lcd_putc( (char)msg->Data.bytes[m] );

                }

                break;

            case LCD_ACTION_SET_CONT:

                // Set contrast

                if(msg->DataLength == 1){

                    OCR0B = msg->Data.bytes[0];

                }

                break;

            case LCD_ACTION_SET_BLIGHT:

                // Set backlight

                if(msg->DataLength == 1){

                    OCR1AL = msg->Data.bytes[0];

                }

                break;

            case LCD_ACTION_GET_CONT:

                // Get contrast

                txMsg.DataLength = 1;

                txMsg.Id = ( CLASS_ACT<<CLASS_MASK_BITS )|( ACT_TYPE_LCD<<ACT_TYPE_BITS )|( LCD_ACTION_SEND_CONT<<LCD_ACTION_BITS )|NODE_ID;

                txMsg.Data.bytes[0] = OCR0B;

                bios->can_send(&txMsg);

                break;

            case LCD_ACTION_GET_BLIGHT:

                // Get backlight

                txMsg.DataLength = 1;

                txMsg.Id = ( CLASS_ACT<<CLASS_MASK_BITS )|( ACT_TYPE_LCD<<ACT_TYPE_BITS )|( LCD_ACTION_SEND_BLIGHT<<LCD_ACTION_BITS )|NODE_ID;

                txMsg.Data.bytes[0] = OCR1AL;

                bios->can_send(&txMsg);

                break;

            default:

                // Take over the world

                break;

        }

    }

}

ISR( PCINT0_vect ){ // For ROTENC_A and ROTENC_B

    uint8_t rot_data = 0;

    txMsg.Id = ( CLASS_SNS<<CLASS_MASK_BITS )|( SNS_ACT_BUTTON<<SNS_TYPE_BITS )|( 0x01<<SNS_ID_BITS )| NODE_ID;

    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);

                // For testing TODO remove

                if(OCR1A<0xFF){

                    OCR1A++;

                }

            }else{

                // Moving left

                txMsg.Data.bytes[0]=LEFT;

                txMsg.Data.bytes[1] = (PIND&(1<<PD2))?0:1;

                bios->can_send(&txMsg);

                // For testing TODO remove

                if(OCR1A>0){

                    OCR1A--;

                }

            }

        }

        rot_laststate = rot_data;

    }else{

        rot_lastdir = rot_data;

    }

}

ISR( PCINT2_vect ){ // For ROTENC_BTN

    txMsg.Id = ( CLASS_SNS<<CLASS_MASK_BITS )|( SNS_ACT_BUTTON<<SNS_TYPE_BITS )|( 0x02<<SNS_ID_BITS )| NODE_ID;

    txMsg.Data.bytes[0] = (PIND&(1<<PD2))?0:1; // Check if buton is pressed or not

    txMsg.DataLength=1;

    bios->can_send(&txMsg);

}

/*-----------------------------------------------------------------------------

 * Main Program

 *---------------------------------------------------------------------------*/

int main(void) {

    /*

     * 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);

    /* Contrast */

    TCCR0A |= (1<<COM0B1)|(1<<WGM01)|(1<<WGM00);

    TCCR0B |= (1<<CS00);

    OCR0B = 0x20;

    DDRD |= (1<<DDD5);

    /* Backlight */

    TCCR1A |= (1<<COM1A1)|(1<<WGM11);

    TCCR1B |= (1<<WGM13)|(1<<WGM12)|(1<<CS10);

    ICR1 = 0xFF; // Make it 8 bits

    OCR1A = 0x20;

    DDRB |= (1<<DDB1);

    txMsg.ExtendedFlag=1;

    txMsg.RemoteFlag=0;

    sei();

    bios->can_callback = &can_receive;

    lcd_init( LCD_DISP_ON );

    lcd_clrscr();

    lcd_puts("HomeAutomation\n");

    send_dimensions();

    lcd_puts("Very nice!\n");

    /* 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);

}