2.Audio Playback(play)

1.1 play()¶

1.2 start_play()¶

1.3 pause_play()¶

1.4 resume_play()¶

1.5 stop_play()¶

1.6 play_time_remain()¶

Example Description¶

In this simple example, we'll start by playing a 7-second music track through the external USB speaker on UNIHIKER. Once the playback finishes, we'll automatically start playing an 8-second music track and then retrieve the remaining playback time twice. Following this, the music playback will pause automatically, resume after a few seconds, and finally stop playing altogether.

Hardware Required¶

• UNIHIKER
• USB speaker

Example Code¶

First, instantiate an object of the Audio class within the UNIHIKER class. Then, use this object to call the play() function to play a 7-second piece of music. Once the playback is completed, call the start_play() function through the same object to play an 8-second piece of music. Next, use the play_time_remain() function to obtain the remaining duration of the music playback. After retrieving the remaining time, call pause_play() to pause the music, resume_play() to resume playing, and finally stop_play() to end the music playback.

Note1:The file should be located within the same directory as this code.

Note2:Ensure that the USB speaker is connected to the USB port of the UNIHIKER to facilitate audio output.

from unihiker import Audio  # Import the Audio module from the unihiker package
import time

audio = Audio()  # Instantiate the Audio class

print("Playing 7s Audio")
audio.play('7s.wav')  # Play the audio file '3s.wav'
print("Playback Completed")

print("Start Playing 8s Audio")
audio.start_play('8s.wav')  # Start playing the audio file '6s.mp3' in the background

for i in range(2):
    remain_time = audio.play_time_remain()  # Get the remaining time of the audio playback
    print("Remaining Time: " + str(remain_time))
    time.sleep(1)  # Pause for 1 second

print("Pause Playback")
audio.pause_play()  # Pause the audio playback
for i in range(2):
    remain_time = audio.play_time_remain()
    print("Remaining Time: " + str(remain_time))
    time.sleep(1)

print("Resume Playback")
audio.resume_play()  # Resume the paused audio playback
for i in range(2):
    remain_time = audio.play_time_remain()
    print("Remaining Time: " + str(remain_time))
    time.sleep(1)

print("Stop Playback")
audio.stop_play()  # Stop the audio playback
print("Playback Ended")