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.. _ex_cbus:

CANbus
======

Basic examples of CANbus communication.


Receive CAN bus message
-----------------------

::

   import pyb
   can = pyb.CAN( 1 )
   can.setfilter( 0, pyb.CAN.LIST16, 0, (123, 124, 125, 126) )
   print( can.recv(0) )


Send CAN bus message
--------------------

::

   import pyb
   can = pyb.CAN( 1 )
   can.setfilter( 0, pyb.CAN.LIST16, 0, (123, 124, 125, 126) )
   can.send( b"message", 123 )


Send/Receive CAN bus message in loopback mode
---------------------------------------------

::

   import pyb
   can = pyb.CAN( 1, pyb.CAN.LOOPBACK )
   can.setfilter( 0, pyb.CAN.LIST16, 0, (123, 124, 125, 126) )
   can.send( b"message", 123 )
   print( can.recv(0) )