RuntimeError: Failed to add edge detection

[noeldum]

On a fresh install of Bookworm on a pi3 I run into a funny python error.

RuntimeError: Failed to add edge detection

Both the script and hardware that I am running were used on a different setup and working pretty well on Bullseye OS. Therefore they are not to be blamed here.
I am happy to question my OS setup of Bookworm. SPI has been enabled with raspi-config.

This is my very simple script

from RFM69 import Radio, FREQ_315MHZ, FREQ_433MHZ, FREQ_868MHZ, FREQ_915MHZ

node_id = 2
network_id = 0

board = {'isHighPower': True, 'encryptionKey': "TOPSECRETPASSWRD"}

with Radio(FREQ_433MHZ, node_id, network_id, verbose=False, **board) as radio:

    while True:
        # This call will block until a packet is received,
        packet = radio.get_packet(timeout = 10)

        # If radio.get_packet times out, it will return None
        if packet is None:
            print("No packet received in the last 10 seconds")
        else:
            # Process packet
            print (packet)

Running this gets us the error below

/usr/local/lib/python3.11/dist-packages/RFM69/radio.py:115: RuntimeWarning: This channel is already in use, continuing anyway.  Use GPIO.setwarnings(False) to disable warnings.
  GPIO.setup(self.rstPin, GPIO.OUT)
Traceback (most recent call last):
  File "/home/pi/rx.py", line 8, in <module>
    with Radio(FREQ_433MHZ, node_id, network_id, verbose=False, **board) as radio:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/RFM69/radio.py", line 87, in __init__
    self._initialize(freqBand, nodeID, networkID)
  File "/usr/local/lib/python3.11/dist-packages/RFM69/radio.py", line 106, in _initialize
    self._init_interrupt()
  File "/usr/local/lib/python3.11/dist-packages/RFM69/radio.py", line 148, in _init_interrupt
    GPIO.add_event_detect(self.intPin, GPIO.RISING, callback=self._interruptHandler)
RuntimeError: Failed to add edge detection

Hardware is all wired to use defaults from the library. It has been well tested before on Bullseye.

Any ideas how to solve this?

ARe there any plan to port this library to the new gpio management system? Looks like Rpi.GPIO is getting obsolete now.

[noeldum]

Quick update. I reverted my OS to Bullseye. Enabled SPI. Installed rpi-rfm69 smoothly. All working perfectly well here.

There is definitely an issue with Bookworm and this library.

It looks like this library should work using rpi-lgpio without any code change. That's the theory but in practice it does not work due to the error reported in OP.

[jgillula]

It looks like this library should work using rpi-lgpio without any code change. That's the theory but in practice it does not work due to the error reported in OP.

Just to double check so I understand the problem: did the error in comment#1 happen on Bookworm with rpi-lgpio installed?

[noeldum]

Yes that's right.
I did uninstall the rpi.gpio package and made sure I had rpi.lgpio.

I can double check all this when i have a moment. I am now working with Bullseye as I got nowhere with Bookworm. So I'll have to prepare a dedicated install for this.

Ideally documenting installation on Bookworm would help us all.

I will post my findings here when I have more details.