RE: NRF9160 custom board modem problem

user93921 — Thu, 19 May 2022 09:17:57 GMT

Hi Snaider,

[quote user=""]Any recommendation on bringing up the custom PCB[/quote]

Following nRF9160 Hardware Design Guidelines during your HW design, then you can raise a private ticket to get help from our HW expert for a free HW review. Our nRF9160DK and Thingy91 are good references for your custom board design.

[quote user=""]What are the hardware outputs to the modem that I should be looking at?[/quote][quote user=""]Using the DK as programmer, can I connect to the modem using the LTE link monitor to verify the modem is working correctly?[/quote][quote user=""]I have free UART pins, can I use them to get the LOG info? What should I modify in the configuration?[/quote]

Please play with lwm2m_client sample with nRF9160DK at first and observe the log output from LTE Link Monitor. For nRF9160DK, it uses UART0 as default output, and the pins assignment can be found in the device tree file. For your custom board, you can modify the device tree file to get log output and connect with LTE Link Monitor on PC through USB/TTL converter.

Some useful references:

Board support — nRF Connect SDK 1.9.1 documentation (nordicsemi.com)

Working with nRF91 Series — nRF Connect SDK 1.9.1 documentation (nordicsemi.com)

Best regards,

Charlie