scale/src/buttons.cpp

#include "buttons.h"
#include "lcd.h"
#include "scale.h"

void Buttons::init() {
    pinMode(tare_button, INPUT);
    pinMode(controller_button, INPUT);
    pinMode(plus_button, INPUT);
    pinMode(minus_button, INPUT);
}

bool Buttons::is_any_pressed() {
    return digitalRead(tare_button) || digitalRead(controller_button);
}

void Buttons::on_button_pressed(Scale& scale, WeightControllerPool& pool, const LCD& lcd) {
    Action buttonAction = get_button_action();
    switch (buttonAction) {
    case Action::TAR:
        scale.tare();
        break;
    case Action::CALIBRATE:
        scale.calibrate();
        break;
    case Action::NEXT_CONTROLLER:
        lcd.clear();
        pool.next();
        break;
    default:
        break;
    }
}

Buttons::Action Buttons::get_button_action() {
    int button_pressed = 0;
    for (int i = 0; i < buttons_count; i++) {
        button_pressed |= digitalRead(buttons[i]) < i;
    }

    if (last_pressed == button_pressed) {

    }

    Buttons::Action action;
    if (button_pressed & 0x0001) {
        action = Action::TAR;
    }
    else if (tare_pressed && !controller_pressed) {
        action = Action::NEXT_CONTROLLER;
    }
    else {
        action = Action::NONE;
    }

    if (action == Action::TAR && (now - then) > 2000) {
        action = Action::CALIBRATE;
    }

    return action;
}