Scripts to interface with CAN bus devices such as OBD using CANtact and Pyvit on Raspberry Pi
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README.md

Pyvit-CANtact

Scripts to interface with CAN bus devices using CANtact and Pyvit

Note: uses can0 and /dev/ttyACM0

Initialize CANtact with:

python init.py

To display messages on the bus in realtime (Frame ID, packet data):

python socketCAN.py [options]

To display messages on the bus filtered by IDs according to packets in comands_db.json. Scans bus only for IDs in .json file.

python socketCAN_json.py 

To send a single CAN frame onto the bus:

cansend can0 123#1122334455667788

will send a message on interface can0 with identifier 0x123 and data bytes [0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88]. This too assumes values are given in decimal.

To send CAN frames onto the bus using scripts:

python socketsend.py

To request sensor queries according to OBD command tables:

python obd_query.py

To generate random CAN data, useful for testing:

cangen can0

Overall block diagram CANtact-PI module