PowerBlock Status and Shutdown don’t work

[Nino]

Hi there,

I want to use the PowerBlock with an Rpi4 CM module on a Waveshare board. The PowerBlock does not sit on the Rapid. Directly, instead I use a Solid State Relais to switch the power to the RPi. This works great, I use the switch and the PowerBlock switches the SSR, the RPi boots.

But then the problem starts, the LED flashes forever and the shutdown will be done immediately (but I modified the shutdown script and just put out some message).

To investigate I disabled the service and use gpioget/gpioset directly. The first thing I see is that the shutdown pin seems to jump between 0 and 1.., and the other, if I use gpioset to enable the status pin I would assume the led stops flashing, but this does not happens.

I double checked my soldering and cables, both seems to be ok.

As information, I use gpio6 and gpio12, but this should not have an influence, I hope.

Do you have any recommendations for me?

Thank you!
Nino

[Nino]

I solved my problem partly.

I use 2 Power supplies, one for the standby part (power block) and another one for the rpi+dac which gets powered on by the power block. Both have 5v but I did not connect the 2 grounds of the 2 powersupplies, which leads to the problem above. With connected grounds the power block and rpi can communicate, BUT:

The shutdown command is now executed if I press the button, but the power block does not cut off the power.. that's because the status pin is always HIGH... its even high short time after poweron ... I guess this is because I use different pins than default and the rpi just drives that one always high. Do I need some changed to the rpi's boot cfg like pulldowns?

@petrockblog FYI