Unit AudioPlayer Arduino チュートリアル

#include <M5Unified.h>
#include <M5GFX.h>
#include <unit_audioplayer.hpp>

AudioPlayerUnit audioplayer;
m5::touch_detail_t touchDetail;
LGFX_Button button_pre, button_play, button_next;

void setup()
{
    auto cfg            = M5.config();
    cfg.serial_baudrate = 115200;
    M5.begin(cfg);
    M5.Power.setExtOutput(true);
    M5.Lcd.fillScreen(WHITE);
    M5.Lcd.setTextFont(&fonts::DejaVu18);
    M5.Lcd.setTextColor(TFT_BLACK);
    M5.Display.drawString("Unit AudioPlayer Example", 0, 0);

    int8_t port_a_pin1 = -1, port_a_pin2 = -1;
    port_a_pin1 = M5.getPin(m5::pin_name_t::port_a_pin1);
    port_a_pin2 = M5.getPin(m5::pin_name_t::port_a_pin2);
    Serial.printf("getPin: RX:%d TX:%d\n", port_a_pin1, port_a_pin2);
    //To change the serial port, please modify this section.
    while (!audioplayer.begin(&Serial1, port_a_pin1, port_a_pin2)) {//Default UART Num: 1,
        delay(1000);
    }
    Serial.println("Unit AudioPlayer is ready");
    audioplayer.setPlayMode(AUDIO_PLAYER_MODE_SINGLE_STOP);//Default Play Mode: single stop
    audioplayer.playAudio();
    audioplayer.selectAudioNum(1);//Default Audio Num: 1
    M5.Display.drawString("Audio Num:1", 0, 80);
    audioplayer.setVolume(25);

    button_pre.initButton(&M5.Lcd, 47, 215, 60, 60, TFT_WHITE, TFT_PINK, TFT_BLACK, "<", 1, 1);
    button_pre.drawButton();
    button_play.initButton(&M5.Lcd, 157, 215, 60, 60, TFT_WHITE, TFT_PINK, TFT_BLACK, ">\\||", 1, 1);
    button_play.drawButton();
    button_next.initButton(&M5.Lcd, 267, 215, 60, 60, TFT_WHITE, TFT_PINK, TFT_BLACK, ">", 1, 1);
    button_next.drawButton();
}

void loop()
{
    static uint8_t lastPlayStatus = 255;
    static uint8_t lastAudioNum = 0, lastVolume = 0;
    static bool refreshAudioNum = false;

    uint8_t playStatus = audioplayer.checkPlayStatus();
    uint8_t volume     = audioplayer.getVolume();
    uint8_t audioNum   = 0;

    if (refreshAudioNum) {
        audioNum        = audioplayer.getCurrentAudioNumber();
        refreshAudioNum = false;
    } else {
        audioNum = lastAudioNum;
    }

    if (playStatus != lastPlayStatus) {
        static String playStatusStr;
        if (playStatus == AUDIO_PLAYER_STATUS_PAUSED) {
            playStatusStr = "Paused";
        } else if (playStatus == AUDIO_PLAYER_STATUS_STOPPED) {
            playStatusStr = "Stopped";
        } else if (playStatus == AUDIO_PLAYER_STATUS_PLAYING) {
            playStatusStr = "Playing";
        }

        M5.Display.fillRect(0, 40, 320, 20, WHITE);
        M5.Display.drawString("Play Status:" + playStatusStr, 0, 40);

        lastPlayStatus = playStatus;
    }

    if (volume != lastVolume) {
        M5.Display.fillRect(0, 120, 320, 20, WHITE);
        M5.Display.drawString("Volume:" + String(volume), 0, 120);
        lastVolume = volume;
    }

    if (audioNum != lastAudioNum && audioNum != AUDIO_PLAYER_STATUS_ERROR) {
        M5.Display.fillRect(0, 80, 320, 20, WHITE);
        M5.Display.drawString("Audio Num:" + String(audioNum), 0, 80);
        lastAudioNum = audioNum;
    }

    M5.update();
    touchDetail = M5.Touch.getDetail();

    if (touchDetail.isPressed()) {
        if(button_pre.contains(touchDetail.x, touchDetail.y)){
            Serial.println("Btn_pre pressed");
            audioplayer.previousAudio();
            refreshAudioNum = true;
        }
        else if(button_play.contains(touchDetail.x, touchDetail.y)){
            Serial.println("Btn_play pressed");
            if (playStatus == AUDIO_PLAYER_STATUS_PLAYING) {
                audioplayer.pauseAudio();
                Serial.println("pause_audio");
            } else {
                audioplayer.playAudio();
                Serial.println("play_audio");
            }
        }
        else if(button_next.contains(touchDetail.x, touchDetail.y)){
            Serial.println("Btn_next pressed");
            audioplayer.nextAudio();
            refreshAudioNum = true;
        }
    }
}