#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/pwm.h"

#define BUZZER_PIN 15 // Pin connected to the buzzer

void play_tone(uint16_t frequency, uint16_t duration_ms) {
    // Configure PWM slice for the buzzer pin
    uint slice_num = pwm_gpio_to_slice_num(BUZZER_PIN);

    pwm_set_wrap(slice_num, 125000000 / frequency - 1);
    pwm_set_gpio_level(BUZZER_PIN, (125000000 / frequency - 1) / 2);
    pwm_set_enabled(slice_num, true);

    sleep_ms(duration_ms);

    pwm_set_enabled(slice_num, false); // Turn off the tone
}

int main() {
    stdio_init_all();

    // Initialize the GPIO pin for PWM
    gpio_set_function(BUZZER_PIN, GPIO_FUNC_PWM);
    printf("Buzzer Tone Test Initialized\n");

    while (true) {
        // Play a 1kHz tone for 500ms
        play_tone(1000, 500);

        // Wait for 500ms before the next tone
        sleep_ms(500);
    }
}
/*simple buzzer on/off
#include <stdio.h>
#include "pico/stdlib.h"

#define BUZZER_PIN 15 // Pin connected to the buzzer

int main() {
    stdio_init_all();
    gpio_init(BUZZER_PIN);
    gpio_set_dir(BUZZER_PIN, GPIO_OUT);

    printf("Buzzer Test Initialized\n");

    while (true) {
        // Turn the buzzer ON
        gpio_put(BUZZER_PIN, 1);
        printf("Buzzer ON\n");
        sleep_ms(500);

        // Turn the buzzer OFF
        gpio_put(BUZZER_PIN, 0);
        printf("Buzzer OFF\n");
        sleep_ms(500);
    }
}
*/