Problem with analogIn Matrix portal, latest circuit python

[martingosnell]

Can someone please help, I have latest CircuitPython 7.0 (downloaded 8-Oct-2021) and MU 1.1.0beta5
I want to make a simple analog data logger on Matrix Portal M4 using a while loop and analogio.AnalogIn
I get the ValueError A1 in use
Here's the code with no while loop but A1 value request twice, the second time causes the issue.
I through in some prints and a sleep in case there needed to be time to reset the pins.. please help

import analogio
import board
import time
from board import *

#while True:
print("Hello 1")
adc1 = analogio.AnalogIn(A1)
val = adc1.value
print(val)
print("Hello 2")
adc2 = analogio.AnalogIn(A2)
val = adc2.value
print(val)
time.sleep(1)
print("Hello 1")
adc1 = analogio.AnalogIn(A1)
val = adc1.value
print(val)

Gives ...

soft reboot

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
code.py output:
Hello 1
19968
Hello 2
15104
Hello 1
Traceback (most recent call last):
File "code.py", line 17, in
ValueError: A1 in use

Code done running.

Originally posted by @martingosnell in #3552 (comment)

[dhalbert]

You do not need to do adc1 = analogio.AnalogIn(A1) each time you want to read A1. Instead, just create adc1 once, and then use adc1.value each time you want to read the value.

Here is a loop that will read from A1 and A2 in succession, over and over.

adc1 = analogio.AnalogIn(A1)
adc2 = analogio.AnalogIn(A2)

while True:
    print("Hello 1")
    val = adc1.value
    print(val)
    print("Hello 2")
    val = adc2.value
    print(val)
    time.sleep(1)

More simply, without using val:

adc1 = analogio.AnalogIn(A1)
adc2 = analogio.AnalogIn(A2)

while True:
    print("Hello 1")
    print(adc1.value)
    print("Hello 2") 
    print(adc2.value)
    time.sleep(1)

Since this is not a bug, if you need more help, please ask in https://adafru.it/discord or https://forums.adafruit.com/viewforum.php?f=60

[martingosnell]

Ah thank you, so analogio.AnalogIn(A2) instantiates the object and adc.value updates ... cheers