radio — Radio-related functions

The radio module is based on ESP-NOW Wireless broadcasting without connection provides wireless broadcast function, supports 13 Channel, and can receive broadcast messages sent by members in the same Channel, suitable for multi-board network communication within 30 meters. Parameter ———-

radio.on()

Turn ON wireless function

radio.off()

Turn OFF wireless function

radio.config(channel)

Configure wireless parameters

• channel (int): Wireless channel, range 1~13

radio.receive()

Receive a wireless broadcast message, the message is returned as a string. Can receive up to 250 bytes of data. If no message is received, it returns None . When the internal parameter of receive is True , that is receive(True) , the (msg,mac) binary is returned. The default is receive(False) , which only returns msg.

radio.receive_bytes()

Receive wireless broadcast message, the message is returned in bytes. Others are the same as radio.receive() .

radio.send()

Send wireless broadcast message, data type as string. Return True after successful transmission, otherwise return False.

radio.send_bytes()

Send wireless broadcast message, byte data type. Return True after successful transmission, otherwise return False.

Radio broadcasting example

import radio
import _thread

channel=2

radio.on()
radio.config(channel=channel)               # radio通道设置

def rec_loop():                             # radio接收循环
    while True:
        temp=radio.receive(True)           # radio 接收数据,返回(msg,mac)
        # temp=radio.receive()             # radio 接收数据,返回msg
        if temp:                           # 当接收到数据时打印
            print(temp)

_thread.start_new_thread(rec_loop, ())      # radio接收线程

radio.send("hello mPython!")