99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* File: main.c
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* Author: Sebastian H. Gabrielli
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*
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* Created on March 6, 2024, 12:34 PM
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*/
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#include "header.h"
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#define F_CPU 4000000UL
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#define RTC_PERIOD (511)
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#define DELAY_TIME 1000
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#define USART3_BAUD_RATE(BAUD_RATE) ((float) (64*F_CPU /(16*(float)BAUD_RATE) )+0.5)
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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static FILE USART_stream = FDEV_SETUP_STREAM(USART3_printChar, NULL, _FDEV_SETUP_WRITE);
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void sensor_init(void) {
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/* Disable digital input buffer */
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}
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void USART3_init(void) {
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PORTB.DIRCLR &= ~PIN1_bm;
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PORTB.DIRSET |= PIN0_bm;
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PORTB.DIRCLR = PIN2_bm;
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PORTB.PIN2CTRL |= PORT_PULLUPEN_bm;
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USART3.CTRLB |= USART_RXEN_bm | USART_TXEN_bm; /* Enable both TX and
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RX */
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USART3.BAUD = USART3_BAUD_RATE(9600); /* Setting the baudrate */
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}
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void ADC0_init(void) {
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ADC0.CTRLC = ADC_PRESC_DIV4_gc;
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VREF.ADC0REF = VREF_REFSEL_VDD_gc; /* Internal reference */
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ADC0.CTRLA = ADC_ENABLE_bm /* ADC Enable: enabled */
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| ADC_RESSEL_10BIT_gc; /* 10-bit mode */
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/* Select ADC channel */
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ADC0.MUXPOS = ADC_MUXPOS_AIN6_gc;
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}
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void USART3_sendChar(char c) {
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while (!(USART3.STATUS & USART_DREIF_bm)) {
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;
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}
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USART3.TXDATAL = c;
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}
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void USART3_sendString(char *str) {
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for (size_t i = 0; i < strlen(str); i++) {
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USART3_sendChar(str[i]);
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}
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}
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static int USART3_printChar(char c, FILE *stream) {
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USART3_sendChar(c);
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return 0;
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}
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uint16_t ADC0_read(void) {
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/* Start ADC conversion */
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ADC0.COMMAND = ADC_STCONV_bm;
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/* Wait until ADC conversion done */
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while (!(ADC0.INTFLAGS & ADC_RESRDY_bm)) {
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;
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}
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/* Clear the interrupt flag by writing 1: */
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ADC0.INTFLAGS = ADC_RESRDY_bm;
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return ADC0.RES;
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}
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bool ADC0_conversationDone(void) {
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if (ADC0.INTFLAGS && ADC_RESRDY_bm) {
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return true;
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} else {
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return false;
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}
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}
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int main(void) {
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sensor_init();
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ADC0_init();
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USART3_init();
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stdout = &USART_stream;
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while (1) {
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//printf("loop\n");
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if (ADC0_conversationDone()) {
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adcVal = ADC0_read();
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VREF.ADC0REF = VREF_REFSEL_VDD_gc;
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printf("The values: \n");
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//printf("%u , %u",VREF_REFSEL_VDD_gc , adcVal);
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}
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}
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} |