def transmission_start_end():
tbuzzer = TonalBuzzer(22)
led.blink(0.025, 0.025)
tbuzzer.play(Tone(frequency=500))
sleep(3)
led.off()
tbuzzer.stop()
tbuzzer.close()
return render_template('json.html')
#!/usr/bin/env python
from gpiozero import TonalBuzzer
from gpiozero.tones import Tone
from time import sleep
buzzer = TonalBuzzer(pin=21, initial_value=None, mid_tone=Tone('A4'), octaves=1)
print("Playing: A4...")
buzzer.play(Tone("A4"))
sleep(1)
print("...B4")
buzzer.play("B4")
sleep(0.5)
print("...C4")
buzzer.play(Tone(frequency=523))
sleep(0.5)
print("...E4")
buzzer.play("E4")
sleep(1)
print("Done, exiting...")
buzzer.stop()
buzzer.close()
exit()
