Serial Communication

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Joined: 11/02/2018
Location: Australia
Posts: 1852
Posted: 07:58am 20 Sep 2023      

If memory serves, the PIC32 hardware serial ports can use the INV option to allow connection to RS232 gear using just rudimentary level conversion. Often just a resistor in the MM2 RX line.
I have used it in the past when connected to a laptop for the console.
Perhaps INV is only available on COM1:

If your modules work on a Pico then they must be TTL serial and don't require inversion.

INV should also be available on COM2: but not on any "Embedded C Module" ports.
Edited 2023-09-20 18:06 by phil99