Can I use Rx pin to receive external data e.g. sent from an Arduino?

[tobivan]

Hi there,

is it possible to receive data on Rx pin on a Lilygo t-embed (pin 44) which has been sent via Tx from e.g. an Arduino?
And if so, how can I display it on the screen?

Thanks.
Tobias

[bmorcelli]

If you are sending UART data from Arduino, I believe that the best option is to install BusPirate from geo_tp...

You can use bruce to read RX from this GPIO, but it will be tied to Infrared or Radio Frequency protocols..

For UART communication, it can be possible to control bruce from it, using SerialCmd through UART port, but it is tricky, and it is being developed to control bruce from FlipperZero, for example, but and Arduino would do the very same...

[tobivan]

Thanks a lot for your quick response.
How about SDA and SCL, is receiving data with I2C an option?

[bmorcelli]

It can be done, and you code a JS script to do it for you