I am using python-can to send CAN messages like this:
import can
bus2 = can.interface.Bus(bustype='pcan', channel='PCAN_USBBUS1', bitrate=500000)
msg = can.Message(
arbitration_id=0x42, data=[0, 25, 0, 1, 3, 1, 4, 1], is_extended_id=False
)
bus2.send(msg)
The script works fine, but when I run it for a 2nd time, it results in an error, because the bus is still open from the previous time. I think I need something like this at the end of my script:
bus2.close()
However, this does not exist and I can't seem to find the proper way to do it in the python-can documentation. How can I properly close the bus in order to be able to use it again the next time?
The Bus object should be used inside a with statement to be closed properly.
import can
with can.interface.Bus(bustype='pcan', channel='PCAN_USBBUS1', bitrate=500000) as bus2:
msg = can.Message(arbitration_id=0x42, data=[0, 25, 0, 1, 3, 1, 4, 1], is_extended_id=False)
bus2.send(msg)
You should be able to send more messages inside this open block, but after this block the bus will be closed properly