essai.c

adc conversion on atmega and lcd display (on avr studio)

#include <avr/io.h>
#define F_CPU 4000000UL  // 4 MHz
#include <util/delay.h>
#define LCD PORTC
unsigned char getkey(void)
{
	unsigned char RES;
			PORTD|=_BV(4);
			_delay_us(10);
			if (bit_is_set(PINB,0)) {RES="8";}
			if (bit_is_set(PINB,1)) {RES="7";}
			if (bit_is_set(PINB,2)) {RES="H";}
			if (bit_is_set(PINB,3)) {RES="9";}
			PORTD&=~_BV(4);

			PORTD|=_BV(5);
			_delay_us(10);
			if (bit_is_set(PINB,0)) {RES="5";}
			if (bit_is_set(PINB,1)) {RES="4";}
			if (bit_is_set(PINB,2)) {RES="R";}
			if (bit_is_set(PINB,3)) {RES="6";}
			PORTD&=~_BV(5);

			PORTD|=_BV(6);
			_delay_us(10);
			if (bit_is_set(PINB,0)) {RES="2";}
			if (bit_is_set(PINB,1)) {RES="1";}
			if (bit_is_set(PINB,2)) {RES="B";}
			if (bit_is_set(PINB,3)) {RES="3";}
			PORTD&=~_BV(6);

			PORTD|=_BV(7);
			_delay_us(10);
			if (bit_is_set(PINB,0)) {RES="0";}
			if (bit_is_set(PINB,1)) {RES="A";}
			if (bit_is_set(PINB,2)) {RES=" ";}
			if (bit_is_set(PINB,3)) {RES="E";}
			PORTD&=~_BV(7);
return(RES);
}















void ecrit_instr_lcd(unsigned char instr)
{

	unsigned char instr_tmp = 0x00;

	LCD&=~_BV(0);
	LCD|=_BV(1);
	instr_tmp = instr;
	instr_tmp &= 0xF0;
	instr_tmp = instr_tmp>>2;
	instr_tmp |= 0x02;
	instr_tmp &= 0xFE;
	LCD = instr_tmp;
	_delay_us(400);
	LCD&=~_BV(1);

	instr_tmp=0x00;
	LCD&=~_BV(0);
	LCD|=_BV(1);
	instr_tmp = instr;
	instr_tmp &= 0x0F;
	instr_tmp = instr_tmp<<2;
	instr_tmp |= 0x02;
	instr_tmp &= 0xFE;
	LCD = instr_tmp;
	_delay_us(400);
	LCD&=~_BV(1);

}





void lcd_goto(unsigned char cell)
	{
	unsigned int i;
	ecrit_instr_lcd (0x02);
	for (i = 1; i < cell; i++)
		{
		ecrit_instr_lcd (0x14);
		}
	}

void ecrit_data_lcd(unsigned char data)
	{

	unsigned char data_tmp = 0x00;

	LCD|=_BV(0);
	LCD|=_BV(1);
	data_tmp = data;
	data_tmp &= 0xF0;
	data_tmp = data_tmp>>2;
	data_tmp |= 0x03;
	LCD = data_tmp;
	_delay_us(100); //modif 10ms
	LCD&=~_BV(1);

	data_tmp = 0x00;
	LCD|=_BV(0);
	LCD|=_BV(1);
	data_tmp = data;
	data_tmp &= 0x0F;
	data_tmp = data_tmp<<2;
	data_tmp |= 0x03;
	LCD = data_tmp;
	_delay_us(100);//modif 10ms
	LCD&=~_BV(1);

	}


void lcd_init(void)
	{

	_delay_ms(20);

	LCD&=~_BV(0);
	_delay_us(1);
	LCD|=_BV(1);
	LCD=0x0E;
	_delay_ms(10);
	LCD&=~_BV(1);

	_delay_ms(5);

	LCD&=~_BV(0);
	_delay_us(1);
	LCD|=_BV(1);
	LCD=0x0E;
	_delay_ms(10);
	LCD&=~_BV(1);

	_delay_ms(1);

	LCD&=~_BV(0);
	_delay_us(1);
	LCD|=_BV(1);
	LCD=0x0E;
	_delay_ms(10);
	LCD&=~_BV(1);

	LCD&=~_BV(0);
	_delay_us(1);
	LCD|=_BV(1);
	LCD=0x0A;
	_delay_ms(10);
	LCD&=~_BV(1);

	ecrit_instr_lcd(0x28);
	ecrit_instr_lcd(0x06);
	ecrit_instr_lcd(0x0C);
	ecrit_instr_lcd(0x01);
	}

void lcd_clear(void)
	{
	ecrit_instr_lcd(0x01);
	}

void lcd_puts(char *str)
	{
	while(*str != 0x00)
		{
		ecrit_data_lcd(*str++);
		}
	}

double temperature;
char *temperature_str="00.0";

int main(void)
	{
	//DDRA=0xFE;
	//PORTA=0xFE;
	DDRD=0xFF;
	DDRB=0x00;
	DDRC=0x3F;
	//ADCSRA=0x85;
	lcd_init();
	lcd_clear();
	ecrit_instr_lcd(0x80);
	//      ("L1-----------------+L3-0123456789ABCDEF+L2-0123456789ABCDEF+L4-0123456789ABCDEF+" );
//	while(1)
//	{

	lcd_puts("===MENU PRINCIPAL===____________________T:0.00癈    H:0.00   1-Setup      |08:00");
//	_delay_ms(1000);
//	lcd_puts("=======OPTION=======2-T Cons.   5-      1-Dat/Heu   4-      3-H Cons.   6-Retour");
//	_delay_ms(1000);	
//	}
	
	unsigned char CHb = "";
	unsigned char CH = "";
	while (1)
		{
		//ADMUX=0x00;
		//ADCSRA|=_BV(6);
		//while(bit_is_clear(ADCSRA, 4));
		//ADCSRA|=_BV(4);
		//temperature=(double)ADCW*50/1024;
		//dtostrf(temperature,3,1,temperature_str);
		//ecrit_instr_lcd(0x87);
		//lcd_puts(temperature_str);
		//ecrit_instr_lcd(0x8C);
		//ecrit_data_lcd(0xDF);
		//=============================ECRIRE TEXTE
			
		//CH = "";
		//CH =getkey();
		

		//if (CH==""){CHb="1";}
		//if (CH!=CHb){lcd_puts(CH); CHb="";}
		//lcd_goto(50);
		//CHb=CH;
unsigned char A = "";
A=getkey();
if (A == "1") {lcd_puts("=======OPTION=======2-T Cons.   5-      1-Dat/Heu   4-      3-H Cons.   6-Retour");}
_delay_ms(1);
		}
	return (0);
	}