ArduinoGetStarted
Library does not support buttons with pull down resistors
I have a working project, it's stressful and error-prone for me to open it and change the button connection with a pull-down resistor to a pull-up resistor. I would like to just program the buttons to support debounce through the programming interface without modifying the hardware.
Dear Divino-Fire, The library has not supported pull-down resistor yet. We planed to add it in the next release. But we have not had a specific release date yet.
I am 100% for inverted buttons as well to be added. Btw I am an electrician with hundred years of experience, and since I was in school, the ON was always when something is HIGH, so I always design my projects to be LOW = OFF, HIGH = ON. Anyway, free software so nothing to complain about ;-)
Dear @homonto Me too, I like to design like that. But parts of the world does not like that. I think that is why the concepts "Low trigger", "High trigger", "Normally Open", "Normally Closed" appears
HI @ArduinoGetStarted! Just wondering if the library has been updated to support pull-down resistors. I am trying to use this on the Adafruit ESP32-S2 Reverse TFT that has two buttons that are normally low, and one button that is normally high.
Hi I am also wondering if there is pulldown support yet. I hac a project that uses 3 buttons in a pulldown configuration. in 3 GPIOs that do not have internal pull up or down resistors
Hello,
Thank you for your interest in the ezButton library.
Unfortunately, until now, I still have no time to update it to support the pulldown. I am sorry for this inconvenience!
Have a nice day! Best regards.
On Tue, Nov 28, 2023 at 2:28 PM hselomein @.***> wrote:
Hi I am also wondering if there is pulldown support yet. I hac a project that uses 3 buttons in a pulldown configuration. in 3 GPIOs that do not have internal pull up or down resistors
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Hi I am also wondering if there is pulldown support yet. I hac a project that uses 3 buttons in a pulldown configuration. in 3 GPIOs that do not have internal pull up or down resistors
hi @hselomein use this one: spacehuhn/SimpleButton - it has full config including pullup and down
If you use pulldown resistors, you can make use of these bits:
https://github.com/ArduinoGetStarted/button/blob/2b2d1200d2bc0c7b28998ba25a32f825175bc3a5/src/ezButton.h#L57
https://github.com/ArduinoGetStarted/button/blob/2b2d1200d2bc0c7b28998ba25a32f825175bc3a5/src/ezButton.cpp#L34-L43
and write:
ezButton button(7,INPUT); // rely on external pulldown resistor
or if you are on a device with INPUT_PULLDOWN you can:
ezButton button(7,INPUT_PULLDOWN); // use internal pulldown resistor
