參考網址:qiita.com/yankee/items/1591724d8a2722951c7e#%E3%82%A2%E3%83%A9%E3%83%BC%E3%83%A0%E6%A9%9F%E8%83%BD
//聲音頻率定義
#define NOTE_D0 -1
#define NOTE_D1 294
#define NOTE_D2 330
#define NOTE_D3 350
............
//加上聲音提示(改用tone)
//M5.Speaker.beep(); //這是原來的寫法
//frequency -1, with a duration of 200ms
M5.Speaker.tone(NOTE_DH2, 100);
delay(100);
M5.Speaker.tone(NOTE_D0, 100);
delay(100);
M5.Speaker.tone(NOTE_DH2, 100);
※都不用再重燒程式碼了
// wifi config
storePreferences preferences;
void setup()
{
preferences.begin("wifi-config");
}