Program the RS-232 Port for the Mesa 3 Android

9 Nov 2021

The optional integrated RS-232 port on the Mesa 3 Android uses a USB to RS-232 converter IC from FTDI. It can be used by apps such as the Serial USB Terminal for Android.

For more information about the source code FTDI uses, see:

Because the RS-232 port is disabled by default, you must enable the port before using the application. Go to Settings > RS-232 and select Enable. 

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

If developing your own Android app, it may be helpful to use a foreground service. This allows an RS-232 connection to continue functioning, even if the device is in Sleep mode. For more information, see Using a Foreground Service for Your App.