openmv/scripts/examples/50-OpenMV-Boards/50-IMXRT-Boards/50-Board-Control/can.py
2024-02-16 12:01:32 -08:00

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961 B
Python

# This work is licensed under the MIT license.
# Copyright (c) 2013-2024 OpenMV LLC. All rights reserved.
# https://github.com/openmv/openmv/blob/master/LICENSE
#
# CAN Shield Example
#
# This example demonstrates CAN communications between two cameras.
# NOTE: you need two CAN transceiver shields and DB9 cable to run this example.
import time
from machine import CAN
# NOTE: Set to False on receiving node.
TRANSMITTER = True
can = CAN(0, CAN.NORMAL, baudrate=1000000, auto_restart=True)
if TRANSMITTER:
while True:
# Send message with id 1
can.send("Hello", 1, timeout=100, extframe=False)
time.sleep_ms(1000)
else:
# Runs on the receiving node.
# Set a filter to receive messages with id=1 and 2
# Filter index, mode (DUAL, etc..), FIFO (0), params
can.setfilter(0, CAN.DUAL, 0, [1, 2])
while True:
# Receive messages on FIFO 0 (there's only one fifo)
print(can.recv(0, timeout=10000))