RE: AWS IoT application on Thing:91

garrettb — Wed, 09 Feb 2022 05:46:12 GMT

Hi Didrik - thanks for your answers - I was able to load the certificates successfully - and get further through the application example

RE: AWS IoT application on Thing:91

Didrik Rokhaug — Mon, 07 Feb 2022 14:20:09 GMT

Hi,

[quote user=""]

QUESITON 1:

Which of the files I downloaded from AWS match which fields in the Certificate Manager?

[/quote]

Private key = xxx-private.key.pem

Client certificate = xxx-certificate.pem.crt

CA certificate = Both should probably work, but I have used AmazonRootCA.pem

[quote user=""]

QUESTION 2:

Is this the correct way to copy the certificates / keys?

[/quote]

Yes, that looks correct. Just make sure you include the final newline. It is also a part of the key/certificate.

[quote user=""]VS Code won’t detect my Thingy (even though it will detect an nRF52 dev board that I have).[/quote]

VS Code currently only detects DKs with an on-board debugger. We are working on improving this, so that Thingies and dongles also will be detected.

[quote user=""]

So I then tried to use the Programmer in nRF Connect Desktop to load the AT Client hex file on to Thingy

The only two hex files to choose from in this project were

[/quote]

How did you build the project?

Which SDK version did you use?

If you build for thingy91_nrf9160_ns in NCS v1.8.0, you should also get the app_signed.hex file needed for DFU.

[quote user=""]

QUESTION 3

Should I be able to use AT commands to update certificate on the Thingy, when I have loaded the Asset Tracker application?

[/quote]

Yes. But, if you want to write the certificates, you should remove the SIM card before sending AT+CFUN=4. Otherwise, you risk the application rebooting before the certificates get written to the modem.

Best regards,

Didrik