Hello everybody!
Recently I've been trying to implement different low-power modes on the Nucleo-WL55JC board and measure the according power consumptions.
At the start I was provided an Otii Arc Pro with the software but then we realized it was a rather costly solution.
So we switched to an alternative from Nordic Semiconductor, the Power Profiler Kit II (also known as PPK2).
At first glance it seemed rather complicated to set up the Nucleo board with the PPK2, since it was originally made to work with nRF boards (as I understood it that way), and pins names and locations for external power supply change from an Nucleo board to another.
Eventually I managed to set it up correctly by mimicking what I did with the Otii solution. I decided to share what I've found if you ever encounter this problem.
1) Switch the jumper JP4 position to E5V, this would allow the PPK2 to power our board.
2) Unfit the JP7 jumper and fit the STLK_RST jumper to disable the LEDs from power and reset, to reduce consumption even further (not much but still).
3) Spot the E5V and GND pins on the morpho headers of the Nucleo-WL55JC board (CN7) and connect them, respectively, to the VOUT and GND pins from the KKP2.
4) Then you can launch the nRF Connect for Desktop software with the Pwoer Profiler application. Set it to Source meter (3V3) and enable the power output. The PPK2 is know powering the Nucleo board.
I attach a diagram of the connections made.
