AttributeError: 'AHT2x' object has no attribute '__status'

[jvmazola08]

when i try to run this code:

import time, machine
import aht

Example SCL pin and SDA pin for WEMOS D1 mini Lite

i2c = machine.I2C(1,scl=machine.Pin(22), sda=machine.Pin(21))
sensor = aht.AHT2x(i2c, crc=True)

To print one of measures:

print("Humidity: {:.2f}".format(sensor.humidity))
print("Temperature: {:.2f}".format(sensor.temperature))

I get:
Traceback (most recent call last):
File "", line 3, in
File "aht.py", line 164, in
File "aht.py", line 45, in init
File "aht.py", line 56, in is_calibrated
AttributeError: 'AHT2x' object has no attribute '__status'

[etno712]

I don't see how this is possible. Can you give me the exact code that is run, your version of micropython and your ESP board?

[dadr]

I saw the same error. In my case the IIC communication was not working properly. I pulled power, reconnected, and then it worked properly again. Pi Pico W, AHT21, Micropython 1.19 and also 1.20.

It might be an improvement in the code to check for proper communication over IIC and report a specific error when you can't reach the device. I suspect that would also help a lot of folks who have troubles with setting up IIC correctly.