<![CDATA[[Solved]M5stack core not recognizing Button Unit correctly]]>I was using the button unit (Port B) and it doesn't do anything. A press of the "A BUTTON" is recognized instead of the button unit.
I tried the same code in my m5stack gray and worked. Both are at v1.2.2

from m5stack import *
from m5ui import *
import units

clear_bg(0x222222)
btn0 = units.get(units.button,units.PORTB)
a = 1

title1 = M5Title(title="Title", fgcolor=0xFFFFFF, bgcolor=0x0000FF)

def btn0_pressed():
global a
a = a +1
title1 = M5Title(title=str(a), fgcolor=0xFFFFFF, bgcolor=0x0000FF)
pass

while True:
btn0.wasPressed(callback=btn0_pressed)

]]>https://community.m5stack.com/topic/923/solved-m5stack-core-not-recognizing-button-unit-correctlyRSS for NodeTue, 28 Apr 2026 23:06:28 GMTSat, 20 Apr 2019 20:27:08 GMT60<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Tue, 23 Apr 2019 01:23:48 GMT]]>@LastCaress Maybe it has been updated. UIFlow is updated everyday.

]]>https://community.m5stack.com/post/3929https://community.m5stack.com/post/3929Tue, 23 Apr 2019 01:23:48 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Mon, 22 Apr 2019 13:40:41 GMT]]>Simple test, 4 units, two grey, two black, using the same portB and button add on:

alt text

and it is working now. Did you update the flow?

]]>https://community.m5stack.com/post/3916https://community.m5stack.com/post/3916Mon, 22 Apr 2019 13:40:41 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Mon, 22 Apr 2019 09:31:23 GMT]]>Hello @LastCaress

The hardware file if BLACK is same as GRAY expect that GRAY OWNS mpu9250.
So if the BUTTON Unit works weith GRAY, it wil also work with BLACK.
You can check the G36 on BLACK by reading the level of G36 after G36 attached to 3.3V pin.

0_1555925445994_微信图片_20190419163740.jpg

]]>https://community.m5stack.com/post/3905https://community.m5stack.com/post/3905Mon, 22 Apr 2019 09:31:23 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 22:25:13 GMT]]>Reading pin 36 on the black cores is not possible right now. Please fix, thank you.

]]>https://community.m5stack.com/post/3895https://community.m5stack.com/post/3895Sat, 20 Apr 2019 22:25:13 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:22:23 GMT]]>When coding in grey : Wait for press of UNIT button, works, no problem
When coding in black : Wait for press of UNIT button, doesn't work. If press button A, it thinks it was a press by UNIT button

]]>https://community.m5stack.com/post/3894https://community.m5stack.com/post/3894Sat, 20 Apr 2019 21:22:23 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:19:57 GMT]]>Black works with port B:
alt text

]]>https://community.m5stack.com/post/3893https://community.m5stack.com/post/3893Sat, 20 Apr 2019 21:19:57 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:17:27 GMT]]>@LastCaress Buttons A, B and, C use the event button loop and obtain button (Yellow blocks)

Button units use a lightgreen block.(just using blocky for example)

]]>https://community.m5stack.com/post/3892https://community.m5stack.com/post/3892Sat, 20 Apr 2019 21:17:27 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:10:41 GMT]]>@lastcaress The Button unit is not the same as button A, B and, C

You have the go base?
Then yes it works on Port B however Units seem to be unselectable at the moment.

]]>https://community.m5stack.com/post/3891https://community.m5stack.com/post/3891Sat, 20 Apr 2019 21:10:41 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:06:14 GMT]]>But it still recognizes the ButtonA as a unit press :| Also, can't I use the bottom with the Port B & C ?

]]>https://community.m5stack.com/post/3890https://community.m5stack.com/post/3890Sat, 20 Apr 2019 21:06:14 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 21:04:05 GMT]]>The black doesn't have a port B which is the issue, on the black you need to use the A0 pin on the base.
The black only has the red port which doesn't work.

]]>https://community.m5stack.com/post/3889https://community.m5stack.com/post/3889Sat, 20 Apr 2019 21:04:05 GMT<![CDATA[Reply to [Solved]M5stack core not recognizing Button Unit correctly on Sat, 20 Apr 2019 20:47:19 GMT]]>Ok, this is a problem with the m5stack core (black). I tried in two different ones, and they had the same problem. Then I tried in two greys and they did not have the problem. Please fix this.

]]>https://community.m5stack.com/post/3888https://community.m5stack.com/post/3888Sat, 20 Apr 2019 20:47:19 GMT