Hi everyone , I'm testing ultra-low power on the NUCLEO-WL55JC using STM32CubeIDE . My goal is to reach ~0.9 µA in Stop 2 mode, but I consistently measure around 2.9 mA, even with the debugger disconnected. My setup: Stop 2 mode enabled MSI @ 100 kHz, PLL disabled PVD disabled All unused GPIOs set to analog SUBGHZSPI clock disabled Debug disabled CPU2 not activated Tick suspended Entering Stop 2 with HAL_PWREx_EnterSTOP2Mode() Measurement: JP7 and JP8 removed Powered via JP1 using STLINK-V3PWR Measured with STM32CubeMonitor-Power Question: Why is the current still so high? Is there anything specific on the NUCLEO-WL55JC board (RF switch, etc.) that needs to be disabled? Any working CubeIDE example that reaches ~0.9 µA?
