We have nRF54H20 with IRONSIDE (SDK3.2.4).
RESET button has default configuration - connected to DEBUG MCU:
We need realize external HW reset of the DK by another MCU (Raspberry Pi5). We are using virtual open drain configuration due to different logic level (1.8V@NRF / 3.3V@RPi). Control GPIO is connected to P40, pin 10 at nRF54H20 DK.
Which is connected directly to nRF54H20.RESET
But when we tried to pull reset signal to low by external MCU (RPi) signal drops only from 1.81V to 1.79V.
I afraid of strong driving of this signal by connected switch U13 (FSA2466).
I tried disabling the software debugger (SWD), but the behavior was the same.
How should we correctly connect external HW reset control for this DK?
How is realized reset when we resetting DK via "nrfutil" reset command?
BR,
KeySoft
