DFU & UART

[Igor]

As mentioned on https://devzone.nordicsemi.com/f/nordic-q-a/35771/nrf52-mesh-dfu-questions , NRF_MESH_SERIAL_ENABLE 0 should be set on devices that receive firmware over Mesh (i.e. not UART).

Can NRF_MESH_SERIAL_ENABLE 0 interfere with app_uart_put() method or not?

[Hung Bui]

Hi Igor, 

 

No I don't think you would have any problem setting NRF_MESH_SERIAL_ENABLE to 0 and use app_uart_put(). 

On the opposite setting NRF_MESH_SERIAL_ENABLE to 1 may have an issue with app_uart_get (). 

[Igor]

Would this also be a problem with nRF52840, which hat 2 serial ports?

[Hung Bui]

I believe it should be fine, as long as you configure the UART correctly so Mesh will use one UART and app uart uses the other. 

[Igor]

Is there any way to use Serial DFU and app_uart on the same port?
E.g. run-time enable Serial DFU mode when it is needed otherwise use app_uart mode?  Or manually receive update using app_uart, save to flash and trigger DFU from flash?

[Mesh SDK 2.1.1, NRF SDK 15.0, SD 6.1, NRF52840]

[Igor]

Still no answer?