[syntax=c]#include <avr/io.h>
#include <util/delay.h>
#include "HD44780.h"
#define F_CPU 1000000UL
#define VREF_DIVIDED 25
uint16_t adc_value;
uint16_t voltage_value;
int16_t cz_d, cz_u;
int16_t temp;
char decimal_buffer[33];
char fraction_buffer[33];
void ADC_init(void);
int16_t average_adc(void);
int main(void)
{
// LCD init
LCD_Initalize();
// ADC init
ADC_init();
while (1)
{
adc_value = average_adc();
voltage_value = adc_value * VREF_DIVIDED;
temp = voltage_value / 10 - 500;
cz_d = temp/10;
cz_u = temp%10;
itoa(cz_d, decimal_buffer, 10);
itoa(cz_u, fraction_buffer, 10);
LCD_Clear();
LCD_GoTo(2, 0);
LCD_WriteText("Temperatura:");
LCD_GoTo(6, 1);
LCD_WriteText(decimal_buffer);
LCD_WriteText(".");
LCD_WriteText(fraction_buffer);
_delay_ms(500);
}
}
void ADC_init(void)
{
DDRA &= ~(1 << PA5) | ~(1 << PA6) | ~(1 << PA4);
ADMUX |= (1 << REFS1) | (1 << REFS0); // Vref = 2.56V
ADMUX |= (1 << MUX0) | (1 << MUX2); // Pomiar na ADC5
ADCSRA |= (1 << ADEN) | (1 << ADPS0) | (1 << ADPS1); // Włączenie ADC i preskaler = 64
}
int16_t average_adc(void)
{
int16_t correct_adc;
int16_t temp;
for(int i = 0; i<64; i++)
{
ADCSRA |= (1 << ADSC);
while(ADCSRA & (1 << ADSC));
temp+=ADC;
}
correct_adc = temp / 64;
return correct_adc;
}[/syntax]Statystyki: Napisane przez antosV10 — 15 sty 2021, o 23:01
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