Hardware requirements for collecting modem traces.

[kk2mkk]

Hi,

As we are in design phase of our custom board based on nRF9160, can you please let us know what all pins needs to be exposed in our design for collecting modem traces?

regards

KK

[Simonr]

Hi

Yes, you can configure your project to use another UART (Like UART2 for example). You just have to edit the BSD_LIBRARY_TRACE_ENABLED to select the UART you'd like it to use. Please see this link for reference.

Please note that we're entering the summer vacation period here in Norway, so delays must be expected as we are low on staff for the month of July. Sorry about the inconvenience!

Best regards,

Simon

[kk2mkk]

I think you missed to post the link.

[Simonr]

Yes I did, I'm very sorry about that. I updated my previous reply to contain the correct link.

[kk2mkk]

Hi Simonr,

I did following changes but still unable to collect traces on UART2

1) added the below lines to the file ncs\v1.3.0\nrf\applications\serial_lte_modem\Kconfig

config BSD_LIBRARY_TRACE_ENABLED
    bool "Enable proprietary traces over UART"
    select NRFX_UARTE2
    depends on BSD_LIBRARY

2) added tx and rx pins to the file ~\nrf\applications\serial_lte_modem\nrf9160dk_nrf9160ns.overlay

&uart2 {
	current-speed = <115200>;
	status = "okay";
	tx-pin = <10>;
	rx-pin = <11>;
};

3) enabled CONFIG_BSD_LIBRARY_TRACE_ENABLED=y in prj.conf file

did i miss anything?

regards

KK