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  • PCW
  • PCW's Avatar
13 Nov 2024 02:15
Replied by PCW on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

Yes I had forgotten, its the RPI3 that uses USB --> Ethernet
I should know since I have run a Mesa Ethernet card from a RPI4.

 (I think some RPI4 --> Ethernet motion card users needed to increase
the servo thread period to 2 ms to get it to run reliably)
  • tommylight
  • tommylight's Avatar
13 Nov 2024 01:21
Replied by tommylight on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

I was always under the impression that up to version 3 the ethernet was on the USB bus and 4 and after were on the PCIe bus.

Me too ! :)
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
13 Nov 2024 01:15
Replied by Cant do this anymore bye all on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

I was always under the impression that up to version 3 the ethernet was on the USB bus and 4 and after were on the PCIe bus.
  • bladekel
  • bladekel
12 Nov 2024 15:36 - 12 Nov 2024 15:39
How to connect hal pins to custom GUI? was created by bladekel

How to connect hal pins to custom GUI?

Category: Other User Interfaces

Hello to all.
I'm trying to build a custom GUI with pyqt5 for raspberryPi 5.
My linuxCNC version is 2.9.3, python version is 3.11.2.

I wanted to watch a input pin status whenever it changes.
I create a net in my hal file.
net somePin  hal_gpio.PIN33-in

After I created this net, I can see the pin and its changing logic from hal show with axis GUI.
I examined the qtplasmac_sim_handler.py and tried to make connections as on it.

Here is my custom GUI's handler file
def __init__(self, halcomp,widgets,paths):
    super().__init__()

    self.hal = halcomp self.somePinComp = self.hal.newpin('somePin', hal.HAL_BIT, hal.HAL_IN)
    self.somePinComp.value_changed.connect(lambda v: self.debugPrint("Changed"))

with this setup I cant see any changes. It only fires one time "Changed", and after that there is no information...

My guide qtplasmac_sim_handler.py did like I was...

What is my fault?
  • PCW
  • PCW's Avatar
12 Nov 2024 14:43
Replied by PCW on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

Basically the issue is that the RPI4 Ethernet interface is connected via USB
and USB is not suited for real time.

For a RPI4 I would use a SPI interfaced device, The RPI5 (or most PCs) are fine with Ethernet
LinuxCNC motion controllers because their Ethernet hardware are not USB devices.
  • behai
  • behai
12 Nov 2024 13:10
Replied by behai on topic Raspberry PI4, MESA 7I96S problems

Raspberry PI4, MESA 7I96S problems

Category: General LinuxCNC Questions

No. It's an 3 axis mini milling machine, with three steppers. I use step-dir interfaces.
 

Hi This email address is being protected from spambots. You need JavaScript enabled to view it.,

Have you managed to get it to work, please? I am asking because I am thinking of trying out the same set up. I have a Raspberry Pi 4B with 8 GB and real-time kernel. I have not bought a MESA 7I96S yet. But I am planning too.

Thank you and best regards,

...behai.
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