case about nRF9160 Programmer from uart

[peter.min]

Hi,

1. Normally, we use the SWDIO and SWCLK interfaces to download programs through JLink

2. In some cases we did not leave the leads of SWDIO and SWCLK.

3. When we cannot use SWDIO and SWCLK, can we use UART to burn the program?

The test module is nRF9160

Thank you for all your assistance.
Kind regards,
Peter.Min

[Håkon Alseth]

Hi,

 

All ICs are delivered blank from us, so you must initially program them using the SWD interface.

 

Kind regards,

Håkon

[peter.min]

Hi Håkon Alseth,

1.I have learned that nRF9160 without burned program cannot update hex firmware in app core via serial port.

2.What firmware can be burned into nRF9160 to enable nRF9160 to update app core hex firmware via serial port?

Thank you for all your assistance.
Kind regards,
Peter.Min

[Håkon Alseth]

Hi Peter,

 

peter.min said:

2.What firmware can be burned into nRF9160 to enable nRF9160 to update app core hex firmware via serial port?

mcuboot can be used for this purpose, either via the "smp_svr" example (link) with serial backend, or by using the serial recovery, like thingy91 does. Here's the mcuboot configuration for thingy91, which enables serial recovery:

https://github.com/nrfconnect/sdk-mcuboot/blob/v1.9.99-ncs3/boot/zephyr/boards/thingy91_nrf9160.conf

 

Kind regards,

Håkon

[peter.min]

Hi Håkon Alseth,

Great response

Thank you for all your assistance.
Kind regards,
Peter.Min