Momentum-Apps/mp_flipper/examples/flipperzero_speaker_test.py

import time
import flipperzero


def play_frequency(frequency: float):
    volume = 0.8

    flipperzero.speaker_start(frequency, volume)

    for _ in range(0, 150):
        volume *= 0.9945679

        flipperzero.speaker_set_volume(volume)

        time.sleep_ms(1)

    flipperzero.speaker_stop()


play_frequency(100.0)
play_frequency(200.0)
play_frequency(300.0)
play_frequency(500.0)
play_frequency(800.0)
play_frequency(1300.0)
play_frequency(2100.0)
play_frequency(3400.0)