CAN发送和接收过滤方法程序

下面是一个简单的CAN发送和接收过滤方法的程序示例：

import can

def send_can_message(interface, can_id, data):
    bus = can.interface.Bus(channel=interface, bustype='socketcan')
    message = can.Message(arbitration_id=can_id, data=data)
    bus.send(message)

def receive_can_message(interface, can_id):
    bus = can.interface.Bus(channel=interface, bustype='socketcan')
    for message in bus:
        if message.arbitration_id == can_id:
            print("Received CAN message: ID={}, data={}".format(message.arbitration_id, message.data))

if __name__ == "__main__":
    interface = 'can0'  # 根据实际情况修改CAN接口名称
    can_id = 0x123  # 要发送和接收的CAN ID
    data = [0x01, 0x02, 0x03]  # 要发送的数据

    send_can_message(interface, can_id, data)
    receive_can_message(interface, can_id)

这个程序使用Python的python-can库来实现CAN消息的发送和接收。send_can_message函数用于发送CAN消息，需要传入CAN接口名称、CAN ID和要发送的数据。receive_can_message函数用于接收CAN消息，需要传入CAN接口名称和要过滤的CAN ID。在receive_can_message函数中，通过遍历bus对象的迭代器来接收CAN消息，并通过比较消息的CAN ID来过滤所需的消息