RE: Comunication via UART ESP32 <- ->Thingy:91

runsiv — Fri, 09 Jun 2023 12:01:46 GMT

the Thingy91 is not a USB host so it is not possible with the TTL-USB adapter.

"Do I need to reprogram the Thingy:91 to activate the UART?

Does Thingy:91 has UART pins? Actually I'm using a USB UART <-> Serial "

I had a look on there is not easy accessibly UART pins on the thingy91. However if we look at the p6 connector it has "spare" GPIO pins connected to the nrf5240. So it should be possible to use configure two of them as UART pins and pass the data over to the nrf9160. So the short answer to both your questions is yes, but its not straight forward. The Thingy 91 is not designed for developing additional sensor on and is more of a closed solution for testing systems and the onboard sensor.

But if you want to proceed with this solution you can read through this thread

My recommendation for development would be to get a nRF9160DK where you can access the GPIO pins and you have a debugger.

Regards

Runar