Ping1D set_range method is broken

[itskalvik]

Hi!
I am getting the following error when using the set_range method for Ping1d:

AttributeError: 'Ping1D' object has no attribute '_scan_start'

I am using the latest deployment branch

Looks like the issue is with this line:

ping-python/brping/ping1d.py

Line 498 in af89ebd

and (self._scan_start != scan_start or self._scan_length != scan_length)):

I am calling the set_range method before capturing any data, which seems to break it

[palvors]

I 've version 0.2.3 and same probleme about the function set_range ( ohh i call set_mode_auto(0) just before) and got the same error

AttributeError: 'Ping1D' object has no attribute '_scan_start'

[palvors]

Ok, I found a patch without change the library code

The problem is some variable are not setup when we initialize the objet of Ping1D().

So just before set_range call get_profile()

rg = myPing.get_profile()
print(f"get_profile: {rg}")

and the result ->
get_profile: {'distance': 927, 'confidence': 20, 'transmit_duration': 26, 'ping_number': 613445, 'scan_start': 0, 'scan_length': 1000,

after that I call set_range(0,1000) and that perfect work

example of result of get_distance after that

4- Try get data
Distance: 0.927 m Confidence: 20%
transmit_duration 26 us
ping_number 0 pulse
scan_start 0 mm
scan_length 1000 mm
gain_setting 0