I have an MCU on a breadboard that I can communicate with over a UART from a raspberry pi. I want to just perform some simple power analysis of this MCU using a software controlled trigger on the rpi. Could someone explain the minimal amount of routing I’d need to do either directly via the CW1173 or using a CW308 UFO board in order to be able to do this? The MCU needs 3.3v. I’m currently powering the 3.3v supply with a relay controlled by one of the pi GPIOs so that I can do power on resets.
I’m presuming I’ll do something like this:
- power cycle the MCU directly from the CW1173 rather than use the relay
- send a trigger start to the CW lite via a GPIO
- send the password sequence over the uart (there is no response other than echoing the pw)
- maybe send some other command to test if password correct
- send the trigger low via the GPIO to the CW
In this scenario do I just need to route 3.3v via pin 3 on the 20pin connector and connect a rpi gpio to pin 16 for the trigger input?
Edit: that can’t be right as I’m missing access to the measure port. So perhaps I take the power from the CW308 board and then can attach the measure cable to it?