NRF52805 PIN Set

[mjr]

Hello, I'm using nrf52805.

It is confirmed that P0.04 is AIN2 and P0.05 is AIN3.

Can I use this pin as UART TX,RX?
What should I do to use it?

Thank you.

[Eugene Yu]

Hello mjr,

Yes, you can use the pins as UART by just configuring GPIO.

You just need to put these GPIO numbers in the UART configuration.

[mjr]

Thank you Eugene YU,

uart_init()

{ \
  .RX_pin_no = 5, \
  .TX_pin_no = 4, \
  .RTS_pin_no = 255, \
  .CTS_pin_no = 255, \
  .BaudRate = NRF_UART_BAUDRATE_115200, \
  .FlowCtrl = NRF_UART_HWFC_DISABLED, \
  .ParityBit = NRF_UART_PARITY_EXCLUDED, \
}

I set it up.

Is this all I have to do?

I don't do the action.

[Eugene Yu]

Yep. this is enough configuration if other drivers are not using the GPIOs.