no external sensor voltage

mipoat commented 10 months ago

I'm having a hard time getting supply voltage for my DS18B20 sensors when P10 is configured as external sensor power control.

I have a premium license and I'm generating a PSM hex file. I've hooked up 2 DS18B20 sensors to VCC and can read them out without any problem with the configuration below. However, if I use P10 as supply voltage for these sensors, I'm not getting any data. Measuring P10 with an oscilloscope I don't see any signal, only 0V no matter for how long I inspect this pin. This is true even when nothing is attached to P10 and it is floating without any load attached to it.

my config: Settings

Expert

If I generate an end device firmware and set P10 as GPIO output, I can toggle it with the toggle switch in the zigbee2mqtt GUI. So the pin is working.

Any ideas?

mipoat commented 10 months ago

Out of despair I tried the exact same version like here: https://github.com/ptvoinfo/zigbee-configurable-firmware/issues/159

Same configuration options produce 3,3V on P10 with version 2022-10-20 everytime the device wakes up and reads the sensors: Settings1 7 3 0

Can you @ptvoinfo please check what is wrong with the latest version? I'm not sure if it is a good idea to use the old version 2022-10-20, because I see some DS18B20 related fixes in the changelog between this and the most recent version.