PRIMETSS
commented
8 months ago Also get 'Segmentation Error' calling
Controller.OpenPin(pin);
Code:
using System;
using System.Device.Gpio;
using System.Threading;
using System.Device.Gpio.Drivers;
Console.WriteLine("Blinking LED. Press Ctrl+C to end.");
int pin = 5;
Console.WriteLine("======> Sleeping for remote Debugger connect."); // Didnt work
Thread.Sleep(30000);
Console.WriteLine("======> Creating Controller.");
var LinuxLibGpioDriver = new LibGpiodDriver(gpioChip: 0, LibGpiodDriverVersion.V1);
Console.WriteLine($"LinuxLibGpioDriver created {LinuxLibGpioDriver}");
var controller = new GpioController(PinNumberingScheme.Logical, LinuxLibGpioDriver);
Console.WriteLine($"GpioController created Sch:{controller.NumberingScheme} Pins:{controller.PinCount}");
Console.WriteLine($"About to open Pin {pin} PinMode.Input");
var _Pin = controller.OpenPin(pin, PinMode.Input);
Console.WriteLine($"======> PinCreated {_Pin.PinNumber}");
Console.WriteLine("======> Assigning event handler.");
//_Pin.ValueChanged += GpioPinButtonUp_ValueChanged;
Console.WriteLine("Assigned event handler.");
bool ledOn = true;
while (true)
{
//controller.Write(pin, ((ledOn) ? PinValue.High : PinValue.Low));
var v = controller.Read(pin);
Thread.Sleep(1000);
ledOn = !ledOn;
}
void GpioPinButtonUp_ValueChanged(object sender, PinValueChangedEventArgs pinValueChangedEventArgs)
{
}
STRACE:
huesla
pgrawehr
WillThisRun
krwq
Ellerbach
dotnet-policy-service[bot]
Using Latest stable release v3.1.0 & 3.2.0-prerelease.24077.2 & current repo Main (29/Jan/2024) Creating a console App with
After moving from a working (older) to latest stable SDK & OpenWRT on RiPi Compute Module 4. 'Segmentation fault' happens when assign the ValueChanged callback. This project had been running fine with previous version(s) & GPIO buttons were working.
_gpioPinButtonUp.ValueChanged += GpioPinButtonUp_ValueChangedTo replicate I build a simple console app, add dependency
System.Device.Gpio(v3.1.0, tried right back to 2.2 & above preview versions and current Repo's Main branch) and GPIOController and GPIOPin, assign a callback to Pins ValueChanged event.Build & Run App on RPi CM4 and get "Segmentation fault" after trying to assign the call back.
Have also tried the LibGpiodDriver when building the GPIO controller.
Did a
straceand get this which might shine some light?Looks for Library OK:
Fault:
Code:
Remark out the Event Callback assign, and runs as expected.
//_Pin.ValueChanged += GpioPinButtonUp_ValueChanged;Has something change recently with assigning callbacks in dotnet or is it a kernal/linux lib issue?