Comments (11)
Hey Rene-Jean,
well, sure, you could – in theory.
I haven't spent much time looking at the STM32F but you'd want a rather frequent one, otherwise, you'd miss the events.
And as interrupts should be processed fast, you'd need to make sure that you don't set any callback functions.
And then you could use the read()
function to read the state of your button.
But this approach includes quite a few "ifs" and "but's".
I used callbacks and the loop()
approach in order to keep the real loop()
function clean and omit the need for checks somewhere else. If you don't do much processing in your main loop this results in cleaner code IMO.
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Hello René-Jean,
I will try to use an ESP32 and its interrupt timer with my class. Let's see...
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Hey @renejeanmercier,
I looked at your code above, you actually check button events in your main loop.
An alternative would be to use different handlers for your clicks and handle it here.
This would declutter your main loop:
void longClickHandler(Button2& btn) {
fp.normalModeSelectParameter();
fp.normalModeModifyParameter();
}
void doubleClickHandler(Button2& btn) {
fp.presetModeSelectPreset();
fp.displayUpdatedConstantCurrentAndVoltageStatus(true);
fp.calculateAndDisplayOutputImpedance(true);
fp.calculateAndDisplayOutputPower(true);
}
But I will still check out interrupt handlers regardless.
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Hey @renejeanmercier,
I used an ESP32 (a M5Stack Core Gray) to tie the loop()
function to an interrupt. And it works fine.
Here is the sample code:
#include "Button2.h"
#define BUTTON_PIN 39
hw_timer_t *timer = NULL;
Button2 btn;
void IRAM_ATTR onTimer() {
btn.loop();
}
void click(Button2 &b) {
Serial.println("click");
}
void setup() {
Serial.begin(9600);
btn.begin(BUTTON_PIN);
btn.setTapHandler(click);
timer = timerBegin(0, 80, true);
timerAttachInterrupt(timer, &onTimer, true);
timerAlarmWrite(timer, 100000, true); // every 0.1 seconds
timerAlarmEnable(timer);
}
void loop() {
}
Most of the code is based on this example. I adjusted the interval to get a decent reading. Something in the 100ms to 10ms range is a good idea.
So in general, it works fine.
Hope this proves helpful to you.
Cheers
l.
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from button2.
Hey Rene-Jean,
I hope you are feeling better now.
Thank you for your code.
I will surely take a look at it.
In 2.1.0 I added an ESP32 interrupt example, as this is a common controller.
I moved the LongClick to and will answer it there to have proper tracking: #46
Regardless, get well soon.
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Related Issues (20)
- .pio/libdeps/seeed_xiao_esp32c3/Button2/src/Button2.cpp:186:20: error: 'touchRead' was not declared in this scope HOT 2
- detection of long presses does not work properly inside of an interupt timer HOT 2
- Interrupt wdt timeout on CPU1 HOT 2
- button.isPressed(); seems to stay latched. HOT 1
- Long press is not reported in polling mode HOT 1
- Change std::functional guards from platform-based to language version-based HOT 1
- multiple ESP32CapacitiveTouch.ino HOT 1
- 2.3.0 breaks at least on RP2040 with type errors HOT 3
- 2.3.x breaks default implementation? HOT 4
- Advices for implementing a speed-sensitive button-press control HOT 1
- setStateHandler Functions HOT 1
- Multiplexed buttons support HOT 1
- Use hall sensor instead button HOT 1
- 2.3.x does not compile on Arduino Uno R4 HOT 3
- Watchdog timer triggered on both ESP32 Capacitive Touch examples HOT 1
- virtual button init callback HOT 1
- another i2c PE button question HOT 8
- update constants in examples
- Problem with longpress behavior HOT 3
- [question] Is it compatible with all microcontrollers having an Arduino framework implementation? HOT 2
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