QUERY · ISSUE

Enable Touchpad IRQ

openby Anders-Steenopened 2020-03-26updated 2020-03-26

Feature request:

Hi, would it be possible to add irq support to the esp32 Touchpad class?

CANDIDATE · ISSUE

Add 'hard' Pin.irq() support for ESP32

closedby m24hopened 2024-04-19updated 2025-01-07

enhancement

Checks

I agree to follow the MicroPython Code of Conduct to ensure a safe and respectful space for everyone.
I've searched for existing issues regarding this feature, and didn't find any.

Description

Micropython on ESP32 board does not support option 'hard=True' in machine.Pin.irq().

This results in unpredictable effects in the case of faster interrupts, and even the number of call-back function being called far exceeds the number of interrupts that actually occur.

Code Size

Since STM32 platforms have implemented hard interrupts, so I don't think that adds much of a burden.

I once glanced at the source code and felt that it was enough to use mp_call_function_1() instead of mp_sched_schedule, and lock/unlock some resources like GC.

Implementation

I intend to implement this feature and would submit a Pull Request if desirable.
I hope the MicroPython maintainers or community will implement this feature.
I would like to Sponsor development of this feature.

Assessment

Q Qwen · high

Both issues are feature requests for ESP32 interrupt support, but they target different components. Issue #5801 specifically requests IRQ support for the Touchpad class (machine_touch.c), while issue #14330 requests 'hard' interrupt support for the Pin class (machine_pin.c). Although both involve ESP32 interrupts and could potentially benefit from similar underlying improvements, they address distinct APIs and use cases. The Pin.irq() hard interrupt feature does not directly resolve the Touchpad IRQ request, though improvements to the interrupt system might inform future Touchpad implementations.

Suggested action

Keep both issues open as they address different components. Consider linking them in comments to show the relationship, as improvements to the ESP32 interrupt system (issue #14330) could potentially benefit Touchpad IRQ implementation (issue #5801) in the future.