Ping Sonar Python Error

Blue Robotics Products Ping Sonar Devices
1

Any ideas why I’d be getting this message? (we have /dev/ttyPING1 aliased by udev rule to /dev/USB1 where the sonar is attached - get the same error if I open USB1 too)

>>> from brping import Ping1D
>>> myPing = Ping1D("/dev/ttyPING1", 115200) 
Opening /dev/ttyPING1 at 115200 bps 
>>> myPing.initialize()
('message id not recognized: 0', None)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "build/bdist.linux-armv7l/egg/brping/ping1d.py", line 101, in initialize
  File "build/bdist.linux-armv7l/egg/brping/ping1d.py", line 116, in request
  File "build/bdist.linux-armv7l/egg/brping/pingmessage.py", line 480, in __init__  
KeyError: 0
>>>
2

Nevermind. Uninstalled and reinstalled

sudo -H pip install bluerobotics-ping

And we’re back online!

3

Hi,

I’m glad that you figure it out, please let us know if you need any further assistance.

4

What rule did use and where did you place it
This is on a raspberry pi

sudo nano /etc/udev/rules.d/99-com.rules

SUBSYSTEM==“tty”, ATTRS{idVendor}==“0403”, ATTRS{idProduct}==“6015”, ATTRS{serial}==“DP05Y5V8”, SYMLINK+=“pingusb”, MODE=“0666”

sudo udevadm control --reload-rules

sudo udevadm trigger

#comes up on $ ls /dev/

Error reading Ping data: Failed to open the given serial port: [Errno 16] could not open port /dev/pingusb: [Errno 16] Device or resource busy: ‘/dev/pingusb’

I also tried placing it in sudo nano /etc/udev/rules.d/99-serial.rules