Micropython学习交流群 学习QQ群:786510434 提供多种固件下载和学习交流。
Micropython-扇贝物联 QQ群:31324057 扇贝物联是一个让你与智能设备沟通更方便的物联网云平台
Micropython学习交流群 学习QQ群:468985481 学习交流ESP8266、ESP32、ESP8285、wifi模块开发交流、物联网。
Micropython老哥俩的IT农场分享QQ群:929132891 为喜欢科创制作的小白们分享一些自制的计算机软硬件免费公益课程,由两位多年从事IT研发的中年大叔发起。
全网最细micropython使用ble教程
这个应该是全网最良心教程,至少我都是自己琢磨过来的,网上几乎没有ble现成教程,我提供了一个给广大网友能到手就用的详细教程。
非常简单,跟着我的步骤来:
1.自己建一个ble库,将常用的功能、参数我都设置好了,导入即可:
ble.py,将此py文件拷贝到开发板根目录
ble.py
#vx jd3096 接各类micropython相关的毕业设计 商用单 价格便宜速度快 import bluetooth import struct import time from micropython import const #ble常量设置,不用动 _IRQ_CENTRAL_CONNECT = const(1) _IRQ_CENTRAL_DISCONNECT = const(2) _IRQ_GATTS_WRITE = const(3) _FLAG_READ = const(0x0002) _FLAG_WRITE_NO_RESPONSE = const(0x0004) _FLAG_WRITE = const(0x0008) _FLAG_NOTIFY = const(0x0010) _ADV_TYPE_FLAGS = const(0x01) _ADV_TYPE_NAME = const(0x09) _ADV_TYPE_UUID16_COMPLETE = const(0x3) _ADV_TYPE_UUID32_COMPLETE = const(0x5) _ADV_TYPE_UUID128_COMPLETE = const(0x7) _ADV_TYPE_UUID16_MORE = const(0x2) _ADV_TYPE_UUID32_MORE = const(0x4) _ADV_TYPE_UUID128_MORE = const(0x6) _ADV_TYPE_APPEARANCE = const(0x19) #服务注册部分 _UART_UUID = bluetooth.UUID("6E400001-B5A3-F393-E0A9-E50E24DCCA9E") _UART_TX = ( bluetooth.UUID("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"), _FLAG_READ | _FLAG_NOTIFY, ) _UART_RX = ( bluetooth.UUID("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"), _FLAG_WRITE | _FLAG_WRITE_NO_RESPONSE, ) _UART_SERVICE = ( _UART_UUID, (_UART_TX, _UART_RX), ) #广播函数 def advertising_payload(limited_disc=False, br_edr=False, name=None, services=None, appearance=0): payload = bytearray() def _append(adv_type, value): nonlocal payload payload += struct.pack("BB", len(value) + 1, adv_type) + value _append( _ADV_TYPE_FLAGS, struct.pack("B", (0x01 if limited_disc else 0x02) + (0x18 if br_edr else 0x04)), ) if name: _append(_ADV_TYPE_NAME, name) if services: for uuid in services: b = bytes(uuid) if len(b) == 2: _append(_ADV_TYPE_UUID16_COMPLETE, b) elif len(b) == 4: _append(_ADV_TYPE_UUID32_COMPLETE, b) elif len(b) == 16: _append(_ADV_TYPE_UUID128_COMPLETE, b) if appearance: _append(_ADV_TYPE_APPEARANCE, struct.pack("<h", appearance)) return payload #BLE类 class BLESimplePeripheral: def __init__(self, ble, name="mpyble"): #ble名称 self._ble = ble self._ble.active(True) self._ble.irq(self._irq) ((self._handle_tx, self._handle_rx),) = self._ble.gatts_register_services((_UART_SERVICE,)) self._connections = set() self._write_callback = None self._payload = advertising_payload(name=name) self._advertise() def _irq(self, event, data): if event == _IRQ_CENTRAL_CONNECT: conn_handle, _, _ = data print("New connection", conn_handle) self._connections.add(conn_handle) self._advertise() elif event == _IRQ_CENTRAL_DISCONNECT: conn_handle, _, _ = data print("Disconnected", conn_handle) self._connections.remove(conn_handle) self._advertise() elif event == _IRQ_GATTS_WRITE: conn_handle, value_handle = data value = self._ble.gatts_read(value_handle) if value_handle == self._handle_rx and self._write_callback: self._write_callback(value) def send(self, data): for conn_handle in self._connections: self._ble.gatts_write(21, data) def notify(self, data): for conn_handle in self._connections: self._ble.gatts_notify(conn_handle,21,data) def is_connected(self): return len(self._connections) > 0 def _advertise(self, interval_us=500000): print("Starting advertising") self._ble.gap_advertise(interval_us, adv_data=self._payload) def on_write(self, callback): self._write_callback = callback
2.设置主程序,演示具体功能,直接运行即可
blamain.py
#vx jd3096 接各类micropython相关的毕业设计 商用单 价格便宜速度快 import ble import bluetooth import utime #新建ble对象 b = bluetooth.BLE() #导入类 p = ble.BLESimplePeripheral(b) #查看mac地址,能正常显示mac地址就是创建广播成功 aa=b.config('mac') print('mac地址为') print(aa) #接受数据函数 def on_rx(v): print(v) print("Receive_data:", str(v)) p.on_write(on_rx) while 1: if p.is_connected(): p.notify('ble data form mpy') #发送数据(以通知形式) utime.sleep_ms(300) #运行之后打开手机ble助手,连接即可,默认id:mpyble,可在ble.py中更改
3.手机端去下一个ble助手,打开扫描,找到mpyble,链接,接下来就可以测试数据互通了
这下基本稳了,至于其他ble细节的功能,就请自己学习吧,师傅领进门,修行在个人,总体来说基本的功能都有,也可以跟微信小程序很好对接,我已经做过手机微信小程序ble遥控esp32主控的小车程序,效果不错,遗憾的地方就是mpy的ble细节的参数不能设置,比如对功耗有要求降低数据传输频率等,就只能通过改固件的高级方式进行了。
来源:https://blog.csdn.net/jd3096/article/details/121945129
Copyright © 2014 ESP56.com All Rights Reserved
执行时间: 0.0090920925140381 seconds