Is it possible to use the NRF52832 UART in half-duplex single-wire mode, by assigning TXD and RXD to the same GPIO, setting the GPIO drive to disconnect '1' and using a pull-up resistor?
Is it possible to use the NRF52832 UART in half-duplex single-wire mode, by assigning TXD and RXD to the same GPIO, setting the GPIO drive to disconnect '1' and using a pull-up resistor?
It is not possible.
It may work if you put a diode between TX and RX and use pullup resistor on the RX line. Do a search on the internet, there is a lot of information about this topic with other MCUs.
The problem is when you are receiving data. If TX and RX is connected you will have a short when you are receiving data since TX pin is output (current will flow from TX pin on the nRF to the TX pin on the other device), that is why you need a diode.
The problem is when you are receiving data. If TX and RX is connected you will have a short when you are receiving data since TX pin is output (current will flow from TX pin on the nRF to the TX pin on the other device), that is why you need a diode.