nRF9160 firmware update from external microcontroller over UART

[Chintan.patel2]

Hello Support Team,

Requirement: Update the nRF9160 firmware update from the external microcontroller over UART communication.

HW Design:

Exploration Points:

nRF chipset providing the nRF command line tool for programming SoCs.

 - nrfjprog executable: have commands for writing new FW images or binary.

 - nrfjprog DLL: proving dynamic library, have export function including writing new FW image or binary. Using this DLL file developers can create own custom development FW for updating the new binary. 

 

Queries:

- Does this chip include a defined specific UART/Serial port for updating firmware?

- NRFJPROG_connect_to_emu_with_snr, can we pass the UART port as an argument for connection?

- Can you please share a possible solution for updating FW from an external microcontroller using UART or serial port?

Thanks & Regards,

Chintan Patel

[Hakon]

Hello,

- Can you please share a possible solution for updating FW from an external microcontroller using UART or serial port?

You can just do serial DFU, using for instance this sample as a starting point.

Does this chip include a defined specific UART/Serial port for updating firmware?

I believe you can use any UART port for this.