What (uart) example to study to create RS485 on a Fanstel BT832 module? I need to assign TX, RX, DIR on specific GPIO pins.

[peterverkaik]

hi,

The Fanstel BT832 has a nRF52832. It has TX on P11, RX on P12 for standard uart.
I need however rs485 and so need to add a DIR (output) pin. P11 and P12 are not
on the Fanstel castellated pins so I want to re-assing TX and RX as well.

I already looked at project 'uart_pca10040' but have no idea whether this is a good start.
Attached connections diagram. I2C and DIO are extra but the RS485 signals are
the most important.

Thank you.

Fanstel connections.pdf

[peterverkaik]

hi,

Sorry for the late reply.

I have updated the ble_uart example for rs485.

Do I need to add anything so I can use OverTheAir again once this

program is programmed into the Fanstel module.

The Fanstel module firmware supports OTA and that is the only means to program it

(no acces

[Daniel Chisholm]

I don't know the direct answer to your question, but why not try it out on your nRF52-DK, and see if OTA is then broken or still works?  If OTA then "breaks", you can always recover the DK.  Only program the Fanstel once you are sure it works on the DK.