NRF9160 FOTA SSL Certification issue

RE: NRF9160 FOTA SSL Certification issue

Amanda Hsieh — Wed, 15 Jan 2020 08:20:34 GMT

Hi,

Sorry for the delay.

I saw your new question is handled by this case https://devzone.nordicsemi.com/support-private/support/241648.

-Amanda H.

RE: NRF9160 FOTA SSL Certification issue

hmdra — Mon, 23 Dec 2019 13:59:39 GMT

hi amanda,

Thank you for your valuable response, it works well.. but i cannot able to send the data to my mqtt broker..

in my program the log shows the mqtt connected but it also give

POLLNVAL response..

kindly help me to sort this out..

thanks

hmdra

RE: NRF9160 FOTA SSL Certification issue

Amanda Hsieh — Fri, 20 Dec 2019 12:15:00 GMT

Hi,

According to the NCS documentation the function nrf_inbuilt_key_write(..) and nrf_inbuilt_key_delete(..) need to run before the modem is in an active state:

Run this function only when LTE link is inactive. If used during active link, NRF_EACCES will be returned and the key material will not be written.

This is the reason it fails for you, nrf_inbuilt_key_delete(..) and nrf_inbuilt_key_write(..) returns error 13 (=NRF_EACCES), which means there is an active link.

Take a look at the AWS FOTA example, where CONFIG_LTE_AUTO_INIT_AND_CONNECT is set to n. This will avoid the lte init function to run automatically, and you'll have to run it yourself, after nrf_inbuilt_key_write(..) is called.

So in short:

Set CONFIG_LTE_AUTO_INIT_AND_CONNECT to n
Create the function modem_configure() and run it after nrf_inbuilt_key_delete(..) and nrf_inbuilt_key_write(..)

-Amanda H