search

keptenkurk / BS440

Python code to talk to Medisana BS440 bluetooth enabled bathroom scale
MIT License
49 stars 34 forks source link

Update to latest Pygatt #32

Closed keptenkurk closed 7 years ago

keptenkurk commented 7 years ago

Note to self: Pygatt got some updates recently adressing hcitool lescan. This commit could possible avoid the adapter reset in 


    found = False
    while not found:
        try:
            found = adapter.filtered_scan(devname)
            # wait for scale to wake up and connect to it
        except pygatt.exceptions.BLEError:
            adapter.reset()
    return```
as the filtered_scan in fact runs hcitool lescan in background. Would reduce the number of errors in the log.
remb0 commented 7 years ago

does it help? I tried to update but can't update it...

DjZU commented 7 years ago

Instead of trying to upgrade, I manually applied Pygatt PR #92.

As suggested I ran the following command so now I can run hcitool thus BS440.py without super user privileges. sudo setcap 'cap_net_raw,cap_net_admin+eip' `which hcitool` getcap `which hcitool`

Did the same for btmgmt (and removed 'sudo' in btmgmt call from BS440.py) sudo setcap 'cap_net_raw,cap_net_admin+eip' /usr/bin/btmgmt getcap /usr/bin/btmgmt

Make backup sudo cp /usr/local/lib/python2.7/dist-packages/pygatt/backends/gatttool/gatttool.py /usr/local/lib/python2.7/dist-packages/pygatt/backends/gatttool/gatttool.py.backup

Open gksudo gedit /usr/local/lib/python2.7/dist-packages/pygatt/backends/gatttool/gatttool.py

Add commit including 'import signal'

I also commented out these two lines

log.info("Starting BLE scan")

log.info("Found %d BLE devices", len(devices))

Now BS440.log does not get cluttered anymore.

keptenkurk commented 7 years ago

Cool! And thanks for trying. Assumed that this pygatt lescan fix was already in release 3.0.0 and forgot about it. ERROR's in a log are misleading and make people nervous. Thanks for all your contributions.

DjZU commented 7 years ago

Assumed the same actually but digging in it I decided to make this 'hack' since I'm running this script on a machine which is running all the time not like you if I understood well so the log was more of a problem in my case. I believe some errors can still come when resetting but I did not commented out log.error lines. Thanks for your very good starting point work and maintenance!