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pythoncan-bus

VectorError: xlGetChannelIndex failed (XL_ERR_HW_NOT_PRESENT)

Hello I am using python with can analyzer hardware vn1610

import time
import can
count=0
a=0
for i in range(1,1000):  # zero to max range ( 0 - 2048 )
  a=a+1
  print(a)       #code stops running at a=64[enter image description here][1]
  bus = can.interface.Bus(bustype='vector', app_name=None, channel=0,bitrate=500000)
  msg = can.Message(arbitration_id=i, data=[0x02,0x11,0x02,0x00 ,0x00 ,0x00, 0x00, 0x00],dlc=3, extended_id=False)
  bus.send(msg)
  print ("Request msg:",msg)
  response=bus.recv(0.02) 
  print ("Response msg:",response)

I am getting can.interfaces.vector.exceptions.VectorError: xlGetChannelIndex failed (XL_ERR_HW_NOT_PRESENT) as a error. What is causing this error?

Solution

  • It is stopping because you are creating a new interface everytime.

    Probably CANalyzer supports maximum of 64 interfaces [citation needed] and that is why it stops after a = 64.

    You don't have to create interface everytime. Move

    bus = can.interface.Bus(bustype='vector', app_name=None, channel=0,bitrate=500000)

    out of for loop and your code should work. As you don't have to create interface again and again.