<![CDATA[Simulate button press?]]>Is there a way to simulate a button press in code? I'm looking for a M5.BtnA.press(). I've tried pulling GPIO pins low for a quick delay, then back high again, like this:

    digitalWrite(38, LOW);
    delay(100);
    digitalWrite(38, HIGH);

Not only does that not work, I'm afraid I'd lose debouncing. Any ideas?

]]>https://community.m5stack.com/topic/522/simulate-button-pressRSS for NodeTue, 17 Mar 2026 15:07:04 GMTSun, 20 Jan 2019 16:45:15 GMT60<![CDATA[Reply to Simulate button press? on Tue, 22 Jan 2019 17:09:59 GMT]]>Well, I have a couple of spots in my project that a button press would make things very easy. For example, I'm using M5ez for my interface, and use Blynk to display events on the M5 screen. I have backlight timeout set to 30 seconds. A new event doesn't turn the backlight back on, but a keypress does. So, in my if (newEvent) loop, I could have a M5.BtnA.press(), that would wake up the screen. Can I go into the M5ez library, figure out what happens after a real button press to wake the screen and replicate that? Yes, of course, and I have certainly tried that, but some of the items that need to be set are private, so calling them from a main loop is problematic. Rewriting that stuff so it's all public might work, but that solves one problem. I'd also like menus to time out - if there's no activity after going into a menu, I'd like it to time out and go back to the main menu. Again, code can certainly make that happen, but a M5.BtnA.press() would be a lot easier to implement... Does this make sense?

]]>https://community.m5stack.com/post/2632https://community.m5stack.com/post/2632Tue, 22 Jan 2019 17:09:59 GMT<![CDATA[Reply to Simulate button press? on Tue, 22 Jan 2019 05:31:13 GMT]]>I'm wondering what is your purpose for simulating a button press? maybe there could be an alternative solution for your problem

]]>https://community.m5stack.com/post/2624https://community.m5stack.com/post/2624Tue, 22 Jan 2019 05:31:13 GMT<![CDATA[Reply to Simulate button press? on Mon, 21 Jan 2019 04:54:45 GMT]]>Yup, @heybin, you're indeed right. Short of soldering a wire from an available GPIO to the switch itself, I don't see anything in the buttons library that could even be modified to allows for this functionality. It's either so simple that I just can't see the answer, or impossible (without a soldering iron involved)...

]]>https://community.m5stack.com/post/2591https://community.m5stack.com/post/2591Mon, 21 Jan 2019 04:54:45 GMT<![CDATA[Reply to Simulate button press? on Mon, 21 Jan 2019 01:45:47 GMT]]>hello, gpio 38 in esp32 only input

]]>https://community.m5stack.com/post/2582https://community.m5stack.com/post/2582Mon, 21 Jan 2019 01:45:47 GMT