nrf9160 can't jump (Secure Boot: prepare to jump to Non-Secure image)

RE: nrf9160 can't jump (Secure Boot: prepare to jump to Non-Secure image)

SuperAbe — Wed, 07 Aug 2019 15:03:03 GMT

I fixed it here: https://devzone.nordicsemi.com/f/nordic-q-a/50475/nrf-connect-j-link-no-detection

Note: if your nrf9160 won't jump to secure boot and does not return errors seemingly for no reason. Most likely you are trying to access something in the fimware that was not uploaded.

This error will occur if you don't have secure_boot or you don't have latest modem firmware

May all your code run predictably and economically. Namaste.

RE: nrf9160 can't jump (Secure Boot: prepare to jump to Non-Secure image)

AndreasF — Wed, 31 Jul 2019 08:38:30 GMT

Hi.

Check that you are using the latest ncs version by running:

cd ncs/nrf
git checkout master
git pull
git checkout v1.0.0
west update

[quote user="SuperAbe"]I don't know what my modem firmware version is but I assume that I need to run new firmware. How do I do that?[/quote]

Can you take a look at this answer.

The latest modem firmware on nordicsemi.com does not have the nrf9160_mdm_dfu.zip folder, but you can download that here: devzone.nordicsemi.com/.../nrf9160_5F00_mdm_5F00_dfu.zip

So just follow from step 3 in the link above and run nrf9160_mdm_dfu --update from the folder with the latest modem (mfwnrf9160100.zip).

Best regards,

Andreas

RE: nrf9160 can't jump (Secure Boot: prepare to jump to Non-Secure image)

SuperAbe — Tue, 30 Jul 2019 16:08:44 GMT

Thank you for the quick reply.

I don't have experience with IPC yet so I will study more.

I don't know what my modem firmware version is but I assume that I need to run new firmware. How do I do that?

I am using J-Link educational with a custom PCB. My device will not show up on nrf connect but I have been using Segger Embedded Studio so far so it didn't matter to me.

RE: nrf9160 can't jump (Secure Boot: prepare to jump to Non-Secure image)

AndreasF — Tue, 30 Jul 2019 13:17:49 GMT

Hi.

[quote user=""]I assume that by adding CONFIGs to prj.conf that I am creating conflicts between UART instances but I dont know if that is the case.[/quote]

This should not be a problem, prj.conf is suppose to overwrite the other configurations.

[quote user=""]Really the core of my issue is that I don't know how nrf9160 communicates with its built in modem. Does is require UART? will adding UART 2 create conflict with SPI 2?[/quote]

nRF9160 and the modem communicates with eachother by using the interprocessor commuication (IPC) peripheral.

Which tag are you working on, do you have the latest modem firmware?

Best regards,

Andreas