<![CDATA[I2C Error 19]]>i have an M5Stack Core 2 with ENVII sensor (Temperature and Humidity). I have not managed to get it to function using Blockly. Error message I2C bus error 19.

Running 1.85 version with UI Flow 1.7.5.

Any help would be appreciated.

]]>https://community.m5stack.com/topic/3640/i2c-error-19RSS for NodeSat, 02 May 2026 01:41:26 GMTWed, 13 Oct 2021 09:05:41 GMT60<![CDATA[Reply to I2C Error 19 on Sat, 16 Oct 2021 05:48:09 GMT]]>I have found that connecting the ENVIRO module to the Core 2 causes the M5 to lock up. White screen and nothing else.

Is the issue with the module or software? Is there a Driver issue?

]]>https://community.m5stack.com/post/15139https://community.m5stack.com/post/15139Sat, 16 Oct 2021 05:48:09 GMT<![CDATA[Reply to I2C Error 19 on Fri, 15 Oct 2021 04:38:19 GMT]]>Simple code to test ENVII - I get two possible results

  1. white screen with nothing on it

or

  1. I2C BUS ERROR 19

Code

from m5stack import *
from m5stack_ui import *
from uiflow import *
import time
import unit

screen = M5Screen()
screen.clean_screen()
screen.set_screen_bg_color(0xd37272)
env20 = unit.get(unit.ENV2, unit.PORTA)

label0 = M5Label('Temperature', x=22, y=45, color=0x000, font=FONT_MONT_24, parent=None)

screen.set_screen_bg_color(0xffff66)
while True:
label0.set_text(str(env20.temperature))
wait(10)
screen.clean_screen()
wait(3)
wait_ms(2)

]]>https://community.m5stack.com/post/15131https://community.m5stack.com/post/15131Fri, 15 Oct 2021 04:38:19 GMT<![CDATA[Reply to I2C Error 19 on Thu, 14 Oct 2021 01:41:00 GMT]]>could you paste your program screenshot here?

]]>https://community.m5stack.com/post/15119https://community.m5stack.com/post/15119Thu, 14 Oct 2021 01:41:00 GMT