broadcast --- 广播消息

broadcast 模块的主要功能与函数

功能相关函数

broadcast.broadcast(message_str)

广播消息，广播消息后，其他线程可以接收到消息，参数：

• message_str 字符串类型，消息值

程序示例：

# -*- coding: utf-8 -*-
import haloboard
import time
import event

@event.button_pressed
def on_button_a_pressed():
    print("button is pressed")
    haloboard.broadcast("hello")

@event.received("hello")
def received_cb():
    print("received message: hello")