ESP32用Micropython编写出一个蓝牙模块的程序
时间: 2023-03-20 22:01:28 浏览: 195
当然,下面是一个使用MicroPython编写的ESP32蓝牙模块程序示例:
首先,需要导入ESP32和蓝牙库:
```
import bluetooth
from machine import Pin
import esp32
```
接下来,需要初始化蓝牙并设置设备名称:
```
bluetooth.init()
bluetooth.set_advertisement(name='ESP32 Bluetooth', service_uuid=b'1234567890123456')
```
然后,需要设置GPIO口,作为蓝牙模块的连接指示灯:
```
led = Pin(2, Pin.OUT)
```
接着,需要创建一个蓝牙服务器并开始监听:
```
server_sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
server_sock.bind(("", bluetooth.PORT_ANY))
server_sock.listen(1)
```
随后,需要设置服务的UUID和通道号,并将蓝牙模块的地址输出到控制台:
```
uuid = "94f39d29-7d6d-437d-973b-fba39e49d4ee"
bluetooth.advertise_service(server_sock, "ESP32_BT_Server", service_id=uuid, service_classes=[uuid, bluetooth.SERIAL_PORT_CLASS], profiles=[bluetooth.SERIAL_PORT_PROFILE])
print("Waiting for connection on RFCOMM channel")
print("Bluetooth device address:", bluetooth.get_address())
```
最后,需要进入循环,接收蓝牙客户端的连接并进行数据通信:
```
while True:
try:
client_sock, client_info = server_sock.accept()
print("Accepted connection from", client_info)
led.value(1)
while True:
data = client_sock.recv(1024)
if not data:
break
print("Received:", data.decode())
client_sock.send("Echo: " + data.decode())
client_sock.close()
print("Disconnected from", client_info)
led.value(0)
except KeyboardInterrupt:
break
```
以上就是一个使用MicroPython编写的ESP32蓝牙模块程序示例,它可以接收蓝牙客户端发送的数据并将其回显到客户端。
阅读全文