CAN NOT GET AT COMMAND SAMPLE TO WORK

[anasal]

Hello,

I would like to get AT Command Sample to work on nRF9160. I erased the module using Programmer software "erased all" and then loaded Secure Boot sample, then updated the firmware and then loaded the AT Command sample. However, AT commands used timed out.

BR. Anas

[stevenminnick]

If you loaded the secure boot sample and then uploaded the AT command sample, did you use the GUI programmer?  Because both the secure boot and at command sample hex files have to be loaded simultaneously.  And the GUI programmer can erase the whole chip and load what you program. 

When looking at the LTE Link monitor, hit the reset button on the dev kit and make sure you see the secure boot stuff fly across the screen.  If not, it's not on there. In your picture it says AT Host started but doesn't have the secure boot text before it (trust me when it's there you will see it.  It's pages of text as it boots)

I would say secure boot is not on your device.  When you programmed the AT client you erased the secure boot. 

You can use the GUI programmer by loading BOTH the secure boot and AT client hex code files and then program.  Or use the command line:

nrfjprog --eraseall -f nrf91
nrfjprog.exe --program Secure_Boot.hex --sectorerase -r -f nrf91 --verify
nrfjprog.exe --program at_client.hex --sectorerase -r -f nrf91 --verify

Then connect the LTE link monitor, hit the reset button on the dev kit, and check that you see all the secure boot stuff fly on the screen.  AT commands should work.

[anasal]

Where I can get those Secure_Boot.hex and at_client.hex files?

[stevenminnick]

I made them by compiling 0.3.0 and renaming the output from the SES so I knew what the hex files are.  The above was an example. 

This only works with radio firmware

0.6.8-131.alpha  https://www.nordicsemi.com/Products/Low-power-cellular-IoT/nRF9160/Download#infotabs 

So don't keep going with this, but you can test and make sure it works.

at_client.hex

0172.Secure_Boot.hex

Rename the download files or the above commands to work as necessary.

[stevenminnick]

But I would update the radio firmware to 0.7.0_29 from the same link.  And update your GIT repos from the nordic playground to the latest.  And open the AT Client project and build and compile that.  Flash the merged.hex file. 

If you want a hex file to playwith, I'll attach it here.  Make sure you update the radio firmware first.  And then flash this hex file with anything, either the commands I specified or the GUI.

7317.merged.hex