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Alex, any thoughts here?

3.1

One issue I found ... I can't use the GPIO lines if I've set OpenPLC to "Sequent HAT" in the hardware settings. I thought I should be able to use GPIO 23 which should not be used by the card. That is mapped to %QX0.2. It only works if I set the hardware settings to "Raspberry Pi".

Hi I'm trying to use the GP button on the hat. It's pretty undocumented. I thought it was SW1 on the diagram, but if so it should connect to GPIO 13 (pin 33) but it doesn't. Any ideas how to use?

yep, that works really well. thx.

Ok Alex, good news! Going back to default kernel fixed the crashing problem. Your routine ran all night. My original routine also runs but I still get that LED missing cycles - I'm wondering if it's an interaction of the task speed (100mS) and the switching time (500mS) of the TON/TOF calls. I...

one thing ... I'm using a 32 bit kernel not a 64 bit one. is that an issue?

unfortunately when it's locked it is completely unesponsive. That's why it's time to try again with a different kernel. I'm using a real-time preempt kernel at the moment and it's time to eliminate this.

I will re-install with a brand new OS and default kernel and see what happens. I also have a Pi 400 that I can see if it will plug into that. I can't see what difference the pi would make ... there's def. something in the I2c communication causing a problem OpenPLC runs all day when I use GPIO...

I changed Pi 3's too... see the same result.

lasted 40 minutes before locking up.

ah, yes. that will take a bit of understanding.

I had a look through the code and i'm a little puzzled as to how it's running. Normally, you need to complete the functions initializeHardware(), finalizeHardare(), updateBuffersIn(), updateBuffersOut(). but there's nothing like this in sequent.cpp. What am I missing?

OK I updated firmware to v2.06. It ran my openplc program for 12 minutes before locking up. I ran yours with it's 50mS gap but it locked up in 7mins 32 sec. I wrote some C drivers for OpenPLC for another card last year. If you are happy to share I can cast another set of eyes over it if you...

I can't see that as normal ... sometimes they run a little fast, others it's staying on for a cycle or off for a cycle. Unless there is a difference in the way the LEDs operate compared to anything else. I can put another led on on of the digital outputs (with a suitable resistor or course) to...

how does the Industrial board interface to OpenPLC? Is it via the python interface or a C library?

what I'm finding is that if I leave that program running, after a while the whole Pi locks up.

I did make the changes suggested and to no avail. I still see occasional misses. Either the led stays on or stays off for an extra cycle, like it misses the transition. I have also upped the I2C baud rate to 400Kbps to see if this made a difference, but I still see the drops. I installed...

Hi there Alex, I have got OpenPLC and the Sequent Industrial Hat running, but I have found a problem. I have run one of the example programs which implements two timers that act in unison to toggle a LED on and off. This runs fine if I run it on a Pi without the Sequent Industrial card with a...

hi just wondering - will this be based on Python libraries or have you guys written. C++. version for the run time? I checked again today and the Github repo is still dated April 5 - so is the update still in the works?