Adafruit_Blinka: Timed Out Error with PulseIn on Raspberry pi

This happens on my Raspberrypi zero(Buster) and Raspberrypi 3(stretch):

Python 3.7.3 (default, Dec 20 2019, 18:57:59)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import board, pulseio
>>> p = pulseio.PulseIn(board.D14)
/usr/local/lib/python3.7/dist-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/libgpiod_pulsein: error while loading shared libraries: libgpiod.so.2: cannot open shared object file: No such file or directory
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.7/dist-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/PulseIn.py", line 64, in __init__
    message = self._wait_receive_msg()
  File "/usr/local/lib/python3.7/dist-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/PulseIn.py", line 80, in _wait_receive_msg
    raise RuntimeError("Timed out waiting for PulseIn message")
RuntimeError: Timed out waiting for PulseIn message

I first notice this error when I was using ultrasonic sensor, see https://github.com/adafruit/Adafruit_CircuitPython_HCSR04/pull/16

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 15 (3 by maintainers)

Most upvoted comments

Hi, have you been able to solve this? If not please try running sudo apt install libgpiod2.

+12

makermelissa on Apr 29, 2020

Solved after I run sudo apt install libgpiod2 Thank you!

hyansuper on May 7, 2020

Any idea how to fix this on arch? Running arch linux arm on my rpi, installing libgpiod doesn’t work and libgpiod2 doesn’t exist. I even tried converting the libgpiod2 deb package with debtap, didn’t work either

You could try compiling from source: https://github.com/adafruit/libgpiod_pulsein

If you need libgpiod, that can also be compiled from source. See https://learn.adafruit.com/adding-a-single-board-computer-to-blinka/software-setup#installing-libgpiod-from-source-3058818.

makermelissa on Jan 29, 2024

No, you should not need to do that, if you have enabled the timer (If you use a timer) or the service, via systemctl enable servicename, a symlink to the required location (in your case it’s added to default.target), which is enough.

Firesphere on Mar 13, 2022

Try adding User={User that works when running the command manually] to the Service part

Firesphere on Mar 13, 2022