Continuous Wave for nRF9160

Question

Is there any test firmware available (or reference code) for doing total radiated power measurements? I have the nRF9160 designed onto a PCB and we'd like to do some antenna measurements. Ideally I'd be able to put the nRF9160 into a continuous wave mode. 
 
 Thanks! 
 Johnny

Håkon Alseth · Accepted Answer

Hi, In order to do this, you need to change the pin out for the UARTE0 peripheral. This must be done both in the secure_boot application, via the "nrf9160_pca10090.overlay" file, and in your application, at_client, using "nrf9160_pca10090ns.overlay" as this application is in the non-secure region. I can recommend to use gpios between P0.10 and P0.20, as these are all routed out by default to the pin header list, so its easier to access. The .overlay file for secure_boot (nrf9160_pca10090.overlay): /* needed to get the NRF_UARTE2 defined */ &uart2 { current-speed = <1000000>; status = "ok"; tx-pin = <18>; rx-pin = <17>; rts-pin = <19>; cts-pin = <21>; }; &uart0 { current-speed = <115200>; status = "ok"; tx-pin = ; rx-pin = ; rts-pin = ; cts-pin = ; }; And here's an example .overlay file for the at_client example: &uart0 { current-speed = <115200>; status = "ok"; tx-pin = ; rx-pin = ; rts-pin = ; cts-pin = ; }; After creating or editing the existing .overlay file, you should delete the build directory and regenerate the Cmake files prior to building/flashing. Kind regards, Håkon

Håkon Alseth · Answer

Hi, 
 
 There's a test AT command specified in the AT Command pdf at chapter 4.19, "%XRFTEST". 
 You can input this command by using the example at_client, in combination with nRF connect application "LTE Link Monitor". 
 
 Kind regards, 
 Håkon

Continuous Wave for nRF9160

Top Replies