The VOICEN OS uses MQTT as a message bus. We can control LEDs and AMP via the message bus. We can also subscribe touch key events from the message bus.
Turn On/Off the LEDs¶
mosquitto_pub -t /voicen/leds/value -m 0xf mosquitto_pub -t /voicen/leds/value -m 0x0
Enable or Disable the AMP¶
mosquitto_pub -t /voicen/amp -m 1 mosquitto_pub -t /voicen/amp -m 0
Detect touch key events¶
mosquitto_sub -t /voicen/touch
How it works¶
mosquitto is used as the MQTT broker. A IO service is running at background to receive IO control messages and send touch key event.
You can enable, disable, start, stop or restart the IO service with
sudo systemctl stop io sudo systemctl start io sudo systemctl restart io sudo systemctl status io sudo systemctl disable io sudo systemctl enable io
- the IO program is a python script at
- the IO systemd service is at