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CircuitPython - a Python implementation for teaching coding with microcontrollers
https://circuitpython.org
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RP2350: Issue with read current pin state #9574

Closed StefanDraeger closed 1 month ago

StefanDraeger commented 1 month ago

CircuitPython version

Adafruit CircuitPython 9.2.0-alpha.2351 on 2024-08-22; Raspberry Pi Pico 2 with rp2350a

Code/REPL

import board
import time
import board
from digitalio import DigitalInOut, Direction, Pull

tasterSchwarz = DigitalInOut(board.GP28)
tasterSchwarz.direction = Direction.INPUT
tasterSchwarz.pull = Pull.DOWN

while True:
        if tasterSchwarz.value == 1:
            print("key down")

Behavior

The state of the pin doesnt change after set it to HIGH / 1

Description

Circuit: GP28 > Button Pin 1 3.3V (OUT) > Button Pin 2 If I press the button once an relaese this, the state doesnt change its still stay as on.

Additional information

Testet with the new Raspberry Pi Pico 2 - RP2350A device, retestet with the old Version Raspberry Pi Pico - RP2040

The behavior of the old modell is correct, so the state of the pin change after release the button.

dhalbert commented 1 month ago

This is a hardware bug in the RP2350, unfortunately. See #9541 and https://github.com/raspberrypi/pico-feedback/issues/401. Also see https://forums.raspberrypi.com/viewtopic.php?t=375631. We are awaiting further information for Raspberry Pi about their path forward on this.

Closing this in favor of #9541, but thank you for reporting, so that we know that typical users are hitting this problem as well. Multiple people and companies are encountering the issue.