struct.error: unpack requires a buffer of 2 bytes

openedhardware commented 3 years ago

Installed on RPi 4 and got following error:

pi@raspberrypi:~ $ sudo python3 -m aioblescan -e

Google Beacon {'tx_power': -24, 'url': 'https://www.minew.com/', 'rssi': -68, 'mac address': 'ac:23:3f:85:2a:69'}
Fatal error: protocol.data_received() call failed.
protocol: <aioblescan.aioblescan.BLEScanRequester object at 0xb60b0630>
transport: <_SelectorSocketTransport fd=6 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
  File "/usr/lib/python3.7/asyncio/selector_events.py", line 813, in _read_ready__data_received
    self._protocol.data_received(data)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/aioblescan.py", line 1852, in data_received
    self.process(packet)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/__main__.py", line 64, in my_process
    xx = EddyStone().decode(ev)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/plugins/eddystone.py", line 368, in decode
    data = myinfo.decode(data)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/aioblescan.py", line 703, in decode
    self.val = unpack(">h", data)[0] / 256.0
struct.error: unpack requires a buffer of 2 bytes

Next time:

pi@raspberrypi:~ $ sudo python3 -m aioblescan -e
Google Beacon {'tx_power': -24, 'name space': b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\n', 'instance': b'\x00\x00\x00\x00\x00\x90', 'rssi': -59, 'mac address': 'ac:23:3f:85:2a:68'}
Google Beacon {'tx_power': -24, 'url': 'https://www.minew.com/', 'rssi': -62, 'mac address': 'ac:23:3f:85:2a:69'}
Fatal error: protocol.data_received() call failed.
protocol: <aioblescan.aioblescan.BLEScanRequester object at 0xb60ae630>
transport: <_SelectorSocketTransport fd=6 read=polling write=<idle, bufsize=0>>
Traceback (most recent call last):
  File "/usr/lib/python3.7/asyncio/selector_events.py", line 813, in _read_ready__data_received
    self._protocol.data_received(data)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/aioblescan.py", line 1852, in data_received
    self.process(packet)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/__main__.py", line 64, in my_process
    xx = EddyStone().decode(ev)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/plugins/eddystone.py", line 368, in decode
    data = myinfo.decode(data)
  File "/usr/local/lib/python3.7/dist-packages/aioblescan/aioblescan.py", line 703, in decode
    self.val = unpack(">h", data)[0] / 256.0
struct.error: unpack requires a buffer of 2 bytes

Python version and installed library version:

pi@raspberrypi:~ $ python3
Python 3.7.3 (default, Jan 22 2021, 20:04:44) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import aioblescan
>>> aioblescan.__version__
'0.2.8s'
>>>

Instal

frawau commented 3 years ago

Hi,

What is the EddyStone Beacon hardware you are scanning?

Can you get the raw packets for that MAC address?

Looks like URL and UID are working. It could be a problem with telemetry or eid.

It could also be related to this problem

Cheers

openedhardware commented 3 years ago

@frawau

We are using couple of beacons: https://www.minew.com/product/e8-asset-tag/ https://www.minew.com/product/s2-light-sensor/

Thanks!

frawau commented 3 years ago

Hi,

It would take me time and money to get one of those. I am not sure I want to buy something I am pretty sure I will never use. The raw output would really help.

Something like aioblescan --eddy --raw --mac ac:23:3f:85:2a:69

openedhardware commented 3 years ago

They are using their custom data structure. Just received a document and I may have to parse myself.

Thanks!

frawau / aioblescan

struct.error: unpack requires a buffer of 2 bytes #40