Program the RS-232 Port for the Mesa 3 Android

9 Nov 2021

The Mesa 3 Android tablet includes an optional RS-232 port that uses a built-in chip from FTDI to convert USB signals to RS-232. This allows the tablet to communicate with RS-232-compatible devices, such as sensors, controllers, or lab instruments. To use this feature, install an app like Serial USB Terminal for Android.

For more information about the FTDI source code, see:

• UART Terminal Application
• Android JAVA D2XX Examples

Enable RS-232 Port 

To enable the RS-232 port for usage,

1. Go to Settings > RS-232.
2. Select Enable. 

For more information, see the Mesa 3 Android Owner's Manual.

Use a Foreground Service for App Development

If you want to develop your own Android app, you can use a foreground service to allow the RS-232 connection to continue functioning even when the tablet enters Sleep mode. For more information, see Using a Foreground Service for Your App.