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(uint16_t hz) {
    uint32_t rollover = hertz_to_systicks (hz);
    if ((systick_get_count () % rollover) < (rollover >> 1)) {
    	DAC_Set_Value(500);
//        printf ("1");
    }
    else {
    	DAC_Set_Value(0);
//        printf ("0");
    }
}

void activity13_run() {
	init_systick();
	DAC_Init();
	DAC_Start();
	for(;;) {
		play_freq(500);
	}
//	DAC_Set_Value(3000);
}