Reader appears to not read in thread

[Grandpa-G]

Using python3 - a simple read works outside the thread but not inside. This is in a Flask script - I will try a simple thread example as well.

Update - this problem appears to be related to running in Flask

More Update - I got this to work by just adding the instantiation statement in the main thread. The when the rfid thread was setup, the code below worked. I have no idea why.

This is the cocde

` self.reader = SimpleMFRC522()

   print(self.reader)

   while True:

      id, text = self.reader.read()

      print("The ID for this card is:", id)

      print(id)

      sleep(1)

`

[shrewdlogarithm]

I've run into this exact same issue but I've not found a reliable workaround

It seems this library just does not work in a thread which isn't ideal!?

If I instantiate the reader as per the above post, it does read 'sometimes' - it appears to read a card about once every few minutes (even if you leave the card on the reader) and it appears to slow-down the entire Pi whilst it's running in that way...

I'm going to have to switch to a proprietary reader - this just isn't fit-for-purpose - a warning on the Wiki page will save others wasting their time here...

p.s. There is a consolidated RC522 library which does seem to work in threads/on later PIs etc. here

https://github.com/STEMinds/RC522-Python

That works for me multithreaded - may help someone else?