.. zephyr:code-sample:: isotp
:name: ISO-TP library
:relevant-api: can_isotp
Use ISO-TP library to exchange messages between two boards.
Overview
********
This sample demonstrates how to use the :ref:`ISO-TP library <can_isotp>`.
Messages are exchanged between two boards. A long message, that is sent with
a block-size (BS) of eight frames, and a short one that has a minimal
separation-time (STmin) of five milliseconds.
The send function call for the short message is non-blocking, and the send
function call for the long message is blocking.
Building and Running
********************
Use these instructions with integrated CAN controller like in the NXP TWR-KE18F
or Nucleo-F746ZG board.
For the NXP TWR-KE18F board:
.. zephyr-app-commands::
:zephyr-app: samples/subsys/canbus/isotp
:board: twr_ke18f
:goals: build flash
Requirements
************
* Two boards with CAN bus support, connected together
Sample output
=============
.. code-block:: console
Start sending data
[00:00:00.000,000] <inf> can_driver: Init of CAN_1 done
========================================
| ____ ___ ____ ____ ____ |
| |_ _|/ __|| | ___ |_ _|| _ \ |
| _||_ \__ \| || | ___ || | ___/ |
| |____||___/|____| || |_| |
========================================
Got 248 bytes in total
This is the sample test for the short payload
TX complete cb [0]
.. note:: The values shown above might differ.
af047e1891