Arm Mbed OS support forum

Monitoring energy consumption on a B-L475E-IOT01A

Hi,

I’m trying to connect a X-NUCLEO-LPM01A (X-NUCLEO-LPM01A - STM32 Power shield, Nucleo expansion board for power consumption measurement (UM2243) - STMicroelectronics) to a B-L475E-IOT01A (B-L475E-IOT01A - STM32L4 Discovery kit IoT node, low-power wireless, BLE, NFC, SubGHz, Wi-Fi - STMicroelectronics)

My B-L475E-IOT01A card does not seem to start (I’m writing a bit of code to verify this).

When looking at the schematics, the card need a 5V input but all the components I use are connected to the 3.3V input and should be able to run without all the card running.

Is there a way to make this work with a 3.3V input or to plug a 5V input on the card and still monitor the consumption (using another card maybe) ?

EDIT : fyi I posted the same question on the ST community forum : Monitoring energy consumption on a B-L475E-IOT01A