GPIO26 isn't sensed correctly on RPI4

[davthomaspilot]

I use pin 37, GPIO 26 as a flow switch input. It worked fine on RPI 3B+, Bullseye:

But, the Pin State is not sensed correctly nor is recognized in njsPC.

I can use pigpio tro check the state of GPIO26--when flow is on, GPIO26 is high, when flow is off, GPIO26 is low.

If I click the Inverted check box, njsPC thinks there is flow, but it doesn't change when flow goes off. It's like the GPIO that's being monitored by njsPC is incorrect.

Here's the RPI 4 pin-out--but it's the same as it was in earlier pi versions:

[davthomaspilot]

Looks line line 690 in relayEquipmentManager/pinouts is incorrect.

Most gpioID differ from the BCM number by 512--I'm guessing that's because of different offset for GPIO memory mapping RPI4 versus previous versions.

gpioD was 528-I think it should be 538 (26+512). I made that change and it fixed the issue for me.

There other instances where the difference is not 512, but I'm too ignorant to know if maybe that's actually correct for some GPIO.

[davthomaspilot]

here other instances where the difference is not 512, but I'm too ignorant to know if maybe that's actually correct for some GPIO.

Eg, line 684:

Like someone was going through and adding 512 to the BCM # but missed BCM 16? Or, maybe my ignorance...

[tagyoureit]

I've been looking into this. I need to dig deeper. I'm not seeing why the gpio's are numbered the way they are. And it isn't clear to me if they will change between different hardware (I think it might) or not. @rstrouse if you have time, can you shed some light here?