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Topic starter
20/12/2024 2:42 pm
I've recently been testing using the F button to start and stop the RPi when connected via the USB Power supply.
When I press the F button, the UPS correctly triggers shutdown, and the red LED on the pi as well as the solid SYS LED on the UPS are on. However, after the FFSD timeout (30s) the UPS enters LPR mode (SYS LED goes Off), and as soon as it does, the RPi reboots with the UPS still in LPR mode (no LEDs on).
If I just leave it, the RPi will happily work, but with no UPS functionality.
If I press the F button at this time, it hard resets the RPi and reboots it with the UPS working correctly again.
I have a couple of other hats on the RPi board. I am wondering if their power draw in LPR mode is somehow confusing the UPS and triggering a restart? or is the just he RPi?
Could you please help?
Thanks
20/12/2024 4:06 pm
Hi,
Please advise firmware version, hardware configuration (what other HAT are used if so) as also what Raspberry Pi you are using (model) in order to support you.
Thank you and Kind Regards
Topic starter
20/12/2024 10:13 pm
Hi
The firmware is 0x179, which I upgraded yesterday to attempt to see if it would fix it. It did not. I also tried it on firmware 0x156. I am using a HV4B with a LiPo. Reset and power pins are connected to the RPi via two small leads. I've been using a contact button to short the F button & Ground on the external button connectors, but the behaviour is the same with the on-board F button.
The other hats are:
MCC 172 DAQHAT ( https://digilent.com/shop/mcc-172-iepe-measurement-daq-hat-for-raspberry-pi/?srsltid=AfmBOop88RxfO6Y43Hb3NvsQSFIqwQBJd2rqci98O9ioW7vvtP_at67u)
The MCC 172 is also connected permanently via USB.
The Raspberry Pi is a 4B running Raspberry Pi OS x64.
Thanks
