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);

}