ENV IV Unit not working with firmware V2.0.8

dcn91

Hello,
I did not succeed to make my ENV IV unit working with Firmware V2.0.8.
Same issue with a M5Dial and a M5StickC

The code (for StickC)

import os, sys, io
import M5
from M5 import *
from hardware import *
from unit import ENVUnit

label0 = None
i2c0 = None
env4_0 = None


def setup():
  global label0, i2c0, env4_0

  M5.begin()
  label0 = Widgets.Label("label0", 4, 26, 1.0, 0xffffff, 0x222222, Widgets.FONTS.DejaVu18)

  i2c0 = I2C(0, scl=Pin(33), sda=Pin(32), freq=100000)
  print(i2c0.scan())
  env4_0 = ENVUnit(i2c=i2c0, type=4)
  label0.setText(str(env4_0.read_temperature()))


def loop():
  global label0, i2c0, env4_0
  M5.update()


if __name__ == '__main__':
  try:
    setup()
    while True:
      loop()
  except (Exception, KeyboardInterrupt) as e:
    try:
      from utility import print_error_msg
      print_error_msg(e)
    except ImportError:
      print("please update to latest firmware")

The output :
[68, 118]
Traceback (most recent call last):
File "<stdin>", line 22, in <module>
File "<stdin>", line 15, in setup
File "unit/env.py", line 1, in init
File "driver/bmp280.py", line 113, in init
ValueError: device not found

However, the 2 sensors are well detected during the I2C scan ( 68 is the SHT40, 118 is the BMP280).

With Firmware V2.0.7, no issue for both devices.

felmue

Hi @dcn91

it's broken for me to. M5Dial UIFlow firmware v2.0.8. (And yes, with UIFlow firmware v2.0.7 it works fine.)

Note: created an issue here.

Thanks
Felix

mattjcuk

Hi,

I had this too and messaged M5stack, they said it is a bug since the new firmware 2.08 and they are fixing it.

2.07 works fine with it.

Thanks,

Matthew

felmue

Hi guys

please try v2.0.9 which has the issue resolved.

Thanks
Felix