project/Core/Src/Activties/activity13.c


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/*
 * activity13.c
 *
 *  Created on: Nov 18, 2025
 *      Author: sowgro
 */
#include <stdint.h>
#include <stdio.h>
#include "systick.h"
#include "tone.h"
#include "dac.h"

//write 1s for half the freq and 0s for the other half
void play_freq(uint8_t hz) {
	uint32_t rollover = hertz_to_systicks(hz);
	int count = systick_get_count();
	if ((count % rollover) < (rollover >> 1)) {
		DAC_Set_Value(3000);
		printf("1");
	}
	else {
		DAC_Set_Value(0);
		printf("0");
	}
}

void activity13_run() {
	init_systick();
	DAC_Init();
	for(;;) {
		play_freq(3000);
	}
}