attachInterrupt() callback methods with C++ class for ESP32?

[huming2207]

Hi all,

I was very confused about this issue for a few hours. I've searched this issue but for AVR micro controllers, the callback method must be static, or some other tricky workarounds are needed. So I would like to ask that is there any better solutions for implementing non-static method as callback?

Regards,
Jackson

[ferchinas]

Hi, I am looking for the same information. @huming2207 Did you find something?
For the ESP8266 I have successfully used this form esp8266/Arduino#1925
But I can not find a way for ESP32.

[atanisoft]

I couldn't find a way to do this without static. I opted for a struct with methods instead and templates on the methods for instance specific params. It works pretty well for my usage.

[ferchinas]

@atanisoft I do not know how to do what you mention, can you pass me some link that is explained with that?
Thank you very much

[atanisoft]

@ferchinas Here is how I am doing it today...

This function:
https://github.com/atanisoft/DCCppESP32/blob/master/src/SignalGenerator.cpp#L169

gets used for two ISRs by using the template parameter to pass in an index which points back to a struct which holds parameters for the ISR routine. The call to attach the ISR is here: https://github.com/atanisoft/DCCppESP32/blob/master/src/SignalGenerator.cpp#L225

The timers are used to generate a square wave with specific durations based on the data being fed into the dcc signal generator.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs. Thank you for your contributions.

[sauvant]

I would like to reopen this issue.