how to use PPK to perform current measurements on the nRF5x DK ?

[xvhongpeng]

Dear friends, I want to use Power Profiler Kit to monitor the current waves of nRF5x DK, and i followed the following configurations:

• The PPK board (PCA63511) is connected to the nRF5x DK board as described in Connecting the Power Profiler Kit to the nRF5x DK on page 15.
• The DUT select (SW2) switch is in the "DK" position.
• The Power select (SW4) switch is in the "DK" position.
• The USB cable is inserted into the USB on the nRF5x DK and connected to a computer.
• The additional SEGGER J-Link is connected to the Debug in (P21) connector on the PPK, using the 10-pin flat cable.
• The COM (SW3) switch is in the "EXT" position. However, the current waves i got is shown in the pic below. How can i get the current waves of the device ?

[Bjørn Kvaale]

SW3 should be set to DK, not EXT (see link). Also, why did you attach the additional SEGGER J-link to the debug connector on the PPK?

[xvhongpeng]

As the SEGGER J-Link of the nRF5x DK is used for debugging, an additional SEGGER J-Link is needed for connection to the computer and the PPK desktop application.