super hiper kod

/*
 * AVRGCC1.c
 *
 * Created: 2018-04-05 13:32:26
 *  Author: student
 */

#include <avr/io.h>

#define F_CPU 16000000UL
#include <util/delay.h>

#include <lcd.h>

void lcd_reset()
{
	COMM_LCD = 0x02;
	test_bf();
}

void lcd_clear()
{
	COMM_LCD = 0x01;
	test_bf();
}

void lcd_init(void)
{
	_delay_ms(20);
	COMM_LCD = 0x30;
	_delay_ms(5);
	COMM_LCD = 0x30;
	_delay_ms(1);
	COMM_LCD = 0x30;
	_delay_ms(30);
	COMM_LCD = 0x38;
	test_bf();
	COMM_LCD = 0x0C;
	test_bf();
	lcd_clear();
	COMM_LCD = 0x06;
	test_bf();
	lcd_reset();
	// clear charrow
	for (int i = 0; i < 64; i++) {
		COMM_LCD = 0x40 | i;
		test_bf();
		DATA_LCD = 0;
		test_bf();
	}
}

void extram_init(void)
{
	MCUCR = _BV(SRE) | _BV(SRW10);
	XMCRA = _BV(SRW00) | _BV(SRW01) | _BV(SRW11);
}

void lcd_putc(uint8_t x, uint8_t y, char c)
{
	COMM_LCD = 0x80 | (y << 6) | x;
	test_bf();
	DATA_LCD = c;
	test_bf();
}

void lcd_charrow(uint8_t chr, int8_t y, uint8_t data) {
	COMM_LCD = 0x40 | (chr << 3) | (y + 1);
	test_bf();
	DATA_LCD = data;
	test_bf();
}

void led_set(uint8_t pos, uint8_t status) {
	if (!status) {
		PORTB |= 1 << pos;
	} else {
		PORTB &= ~(1 << pos);
	}
}

char to_hex(int v) {
	v = v & 0xF;
	if (v < 0xA) {
		return v + '0';
	} else {
		return v + 'A' - 10;
	}
}

int main(void)
{
	DDRD = 0x00;
	PORTD = 0xFF;
	DDRB = 0xFF;
	PORTB = 0xFF;

	ADMUX = 0x42;
	ADCSRA = 0xE7;

	extram_init();
	lcd_init();

	for (uint8_t i = 0; i < 16; i++) {
		lcd_putc(i, 0, ' ');
		lcd_putc(i, 1, ' ');
	}
	const char* const str = "POMIAR=X.DV";
	for (size_t i = 0u; i < strlen(str); ++i)
		lcd_putc(i, 0, str[i]);
	uint8_t adcl = ADCL;
	uint16_t adc = ((ADCH & 0x03) << 8) | adcl;

	uint16_t vin = (adc * 50) / 1023;

	uint16_t hi = (vin / 10) % 10;
	uint16_t lo = vin % 10;

	lcd_putc(7, 0, to_hex(hi));
	lcd_putc(9, 0, to_hex(lo));
	while(1) {
		if(PIND == 0b11111110){
			uint8_t adcl = ADCL;
			uint16_t adc = ((ADCH & 0x03) << 8) | adcl;

			uint16_t vin = (adc * 50) / 1023;

			uint16_t hi = (vin / 10) % 10;
			uint16_t lo = vin % 10;

			lcd_putc(7, 0, to_hex(hi));
			lcd_putc(9, 0, to_hex(lo));
		}

		//_delay_ms(25);

	}

}