Method begin

src/audio_play/ToneGenerator.cpp:63–81

}

bool ToneGenerator::begin() {
    if (!stream) return false;

    (*stream)->buffer.clear();
    (*stream)->open();

    _block_size = (*stream)->buffer.getBlockSize();

    _delta = 2.f * PI / _sample_rate;

    _t = 0;
    t_call = 0;

    preload_buffer();

    _available = true;

    return true;
}

bool ToneGenerator::available() {
    return _available;