#include "const.h"
#include "state.h"
#include "vco.h"
#include <pico/types.h>
#include "hardware/gpio.h"

void check_button_change(uint pin, bool* btn_state) {
	static bool btn_prev[32] = { false };
	bool btn_now = gpio_get(pin);
	if (btn_now && !btn_prev[pin]) *btn_state = !*btn_state;
	btn_prev[pin] = btn_now;
}

void update_buttons() {
	check_button_change(QUANT_BUTTON, &state.quant_enabled);
	check_button_change(AMEN_BUTTON, &state.amen_enabled);

	bool vco_change;
	check_button_change(VCO_BUTTON, &vco_change);
	if (vco_change) {
		if (state.vco_mode == VCO_SAW) state.vco_mode = VCO_SINE;
		otherwise state.vco_mode++;  
	}
}