IOError: [Errno 19] No such device

[Juan Trujillo]

I'm occasionally seen this error message on my R-Pi... How can I prevent it or fix it?

Traceback (most recent call last):
  File "mainNfc.py", line 221, in <module>
    clf = nfc.ContactlessFrontend('tty:AMA0:pn532')
  File "/home/pi/nfcpy/nfc/clf/__init__.py", line 72, in __init__
    if path and not self.open(path):
  File "/home/pi/nfcpy/nfc/clf/__init__.py", line 146, in open
    self.device = device.connect(path)
  File "/home/pi/nfcpy/nfc/clf/device.py", line 104, in connect
    device = driver.init(tty)
  File "/home/pi/nfcpy/nfc/clf/pn532.py", line 368, in init
    raise IOError(errno.ENODEV, os.strerror(errno.ENODEV))
IOError: [Errno 19] No such device

Thanks,

-Juan

[Stephen Tiedemann (stephen-tiedemann)]

Can you try with latest trunk version, there is at least this http://bazaar.launchpad.net/~stephen-tiedemann/nfcpy/trunk/revision/267 change in relation to pn532 on serial port.

[Juan Trujillo (juancarlos-trujillo)]

Ok. I'm going to ask my team to update the stack to see if this problem goes away.

[Juan Trujillo (juancarlos-trujillo)]

We have definitely seen this error 4 times so far during this month