3.28 haas506 2.0开发教程-example-蓝牙多设备扫描(仅支持M320,HD1)

案例说明

• 开发板扫描蓝牙设备，获取并打印蓝牙设备mac地址。mac地址每个设备不同，且不能更改。
• 本案例仅适用于M320开发板和HD1-RTU。
• 案例使用手机与iBeacon作为从机。开发板根据设备名称进行连接，要同时扫描到2个设备，手机的蓝牙名称需要改成与iBeacon相同的名称。

蓝牙信息克隆

使用手机克隆iBeacon的名字信息。

1.手机蓝牙改名

手机下载nRF connect蓝牙调试工具。

iBeacon设备名称，将手机蓝牙改成一样的名字

选择ADVERTISER后点击图标改名

信息克隆

点开iBeacon设备后，点击CLONE




这样就得到了2个同名的设备。

代码

• 注意更改代码中的设备名称

main.py

# This example finds and connects to a BLE temperature sensor (e.g. the one in ble_temperature.py).# from ast import While
# from logging.config import valid_ident
# from multiprocessing.sharedctypes import Value
# from sys import platlibdir
# from this import d
# from traceback import print_list
import bluetooth
from bluetooth import BLE
from bluetooth import UUID
# import random
import ustruct#import time
import micropythonimport utime as time#from ble_advertising import decode_services, decode_namefrom micropython import const_IRQ_CENTRAL_CONNECT = const(1)
_IRQ_CENTRAL_DISCONNECT = const(2)
_IRQ_GATTS_WRITE = const(3)
_IRQ_GATTS_READ_REQUEST = const(4)
_IRQ_SCAN_RESULT = const(5)
_IRQ_SCAN_DONE = const(6)
_IRQ_PERIPHERAL_CONNECT = const(7)
_IRQ_PERIPHERAL_DISCONNECT = const(8)
_IRQ_GATTC_SERVICE_RESULT = const(9)
_IRQ_GATTC_SERVICE_DONE = const(10)
_IRQ_GATTC_CHARACTERISTIC_RESULT = const(11)
_IRQ_GATTC_CHARACTERISTIC_DONE = const(12)
_IRQ_GATTC_DESCRIPTOR_RESULT = const(13)
_IRQ_GATTC_DESCRIPTOR_DONE = const(14)
_IRQ_GATTC_READ_RESULT = const(15)
_IRQ_GATTC_READ_DONE = const(16)
_IRQ_GATTC_WRITE_DONE = const(17)
_IRQ_GATTC_NOTIFY = const(18)
_IRQ_GATTC_INDICATE = const(19)_ADV_IND = const(0x00)
_ADV_DIRECT_IND = const(0x01)  
_ADV_SCAN_IND = const(0x02)
_ADV_NONCONN_IND = const(0x03)# org.bluetooth.service.environmental_sensing
# _ENV_SENSE_UUID = bluetooth.UUID(0x30AF)
_ENV_SENSE_UUID = bluetooth.UUID("FDA50693-A4E2-4FB1-AFCF-C6EB07647825")
# org.bluetooth.characteristic.temperature
_TEMP_UUID = bluetooth.UUID(0x2A6E)
_TEMP_CHAR = (_TEMP_UUID,bluetooth.FLAG_READ | bluetooth.FLAG_NOTIFY,
)
_ENV_SENSE_SERVICE = (_ENV_SENSE_UUID,(_TEMP_CHAR,),
)_UART_SERVICE_UUID = bluetooth.UUID("6E400001-B5A3-F393-E0A9-E50E24DCCA77")
_UART_RX_CHAR_UUID = bluetooth.UUID("6E400002-B5A3-F393-E0A9-E50E24DCCA77")
_UART_TX_CHAR_UUID = bluetooth.UUID("6E400003-B5A3-F393-E0A9-E50E24DCCA77")_MY_SERVICE_UUID = bluetooth.UUID(0x181A)# org.bluetooth.characteristic.gap.appearance.xml
_ADV_APPEARANCE_GENERIC_THERMOMETER = const(768)_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)def decode_field(payload, adv_type):i = 0result = []while i + 1 < len(payload):if payload[i + 1] == adv_type:result.append(payload[i + 2 : i + payload[i] + 1])i += 1 + payload[i]return resultdef decode_name(payload):n = decode_field(payload, _ADV_TYPE_NAME)# print("n:",n)return str(n[0], "utf-8") if n else ""def decode_mac(addr):if isinstance(addr, memoryview):addr = bytes(addr)assert isinstance(addr,bytes) and len(addr) == 6,ValueError("mac address value error")return ":".join(['%02X' % byte for byte in addr])def print_hex(bytes):l = [hex(int(i)) for i in bytes]return " ".join(l)def decode_services(payload):services = []for u in decode_field(payload, _ADV_TYPE_UUID16_COMPLETE):services.append(bluetooth.UUID(ustruct.unpack("<h", u)[0]))for u in decode_field(payload, _ADV_TYPE_UUID32_COMPLETE):services.append(bluetooth.UUID(ustruct.unpack("<d", u)[0]))for u in decode_field(payload, _ADV_TYPE_UUID128_COMPLETE):services.append(bluetooth.UUID(u))return servicesclass BLETemperatureCentral:def __init__(self, ble):self._ble = bleself._ble.gap_scan_name('X622080084')self._ble.gattc_set_uuids(0xFFF2, 0xFFF1)self._ble.active(True)time.sleep_ms(3000)self._ble.irq(self._irq)self._reset()def _reset(self):# Cached name and address from a successful scan.self._name = Noneself._addr_type = Noneself._addr = Noneself._mac = Noneself._adv_data = None# Cached value (if we have one)self._value = None# Callbacks for completion of various operations.# These reset back to None after being invoked.self._scan_callback = Noneself._conn_callback = Noneself._read_callback = None# Persistent callback for when new data is notified from the device.self._notify_callback = None# Connected device.self._conn_handle = Noneself._start_handle = Noneself._end_handle = Noneself._value_handle = Nonedef _irq(self, event, data):if event == _IRQ_SCAN_RESULT:# time.sleep_ms(1)addr_type, addr, adv_type, rssi, adv_data = data# print("ble data:{}".format(adv_data))# if adv_type in (_ADV_IND, _ADV_DIRECT_IND) and _ENV_SENSE_UUID in decode_services(adv_data):if adv_type in (_ADV_IND, _ADV_DIRECT_IND):# if adv_type in (_ADV_DIRECT_IND): #ibeacon的类型# Found a potential device, remember it and stop scanning.self._addr_type = addr_typeself._addr = bytes(addr)  # Note: addr buffer is owned by caller so need to copy it.self._name = decode_name(adv_data)self._mac = decode_mac(addr)# self._adv_data = bytes(#     adv_data# )  # Note: addr buffer is owned by caller so need to copy it.# self._name = decode_name(adv_data) or "?"# print("ble addr:",self._mac )# print("ble data:",data )elif event == _IRQ_SCAN_DONE:#time.sleep_ms(1000)self._ble.gap_scan(None)#print("##### scan done #####")val = 1if self._scan_callback:if self._addr:# Found a device during the scan (and the scan was explicitly stopped).self._scan_callback(self._addr_type, self._addr, self._name)self._scan_callback = Noneelse:# Scan timed out.self._scan_callback(None, None, None)elif event == _IRQ_PERIPHERAL_CONNECT:print('connect')elif event == _IRQ_PERIPHERAL_DISCONNECT:print('disconnect')elif event == _IRQ_GATTC_SERVICE_RESULT:# Connected device returned a service.conn_handle, start_handle, end_handle, uuid = dataif conn_handle == self._conn_handle and uuid == _ENV_SENSE_UUID:self._start_handle, self._end_handle = start_handle, end_handleelif event == _IRQ_GATTC_SERVICE_DONE:# Service query complete.if self._start_handle and self._end_handle:self._ble.gattc_discover_characteristics(self._conn_handle, self._start_handle, self._end_handle)else:print("Failed to find environmental sensing service.")elif event == _IRQ_GATTC_CHARACTERISTIC_RESULT:# Connected device returned a characteristic.conn_handle, def_handle, value_handle, properties, uuid = dataif conn_handle == self._conn_handle and uuid == _TEMP_UUID:self._value_handle = value_handleelif event == _IRQ_GATTC_CHARACTERISTIC_DONE:# Characteristic query complete.if self._value_handle:# We've finished connecting and discovering device, fire the connect callback.if self._conn_callback:self._conn_callback()else:print("Failed to find temperature characteristic.")elif event == _IRQ_GATTC_READ_RESULT:buffer = self._ble.gattc_read(0,0)print('recv data:',buffer)elif event == _IRQ_GATTC_READ_DONE:# Read completed (no-op).conn_handle, value_handle, status = dataelif event == _IRQ_GATTC_NOTIFY:# The ble_temperature.py demo periodically notifies its value.conn_handle, value_handle, notify_data = dataif conn_handle == self._conn_handle and value_handle == self._value_handle:self._update_value(notify_data)if self._notify_callback:self._notify_callback(self._value)elif event == _IRQ_GATTC_WRITE_DONE:conn_handle, value_handle, status = dataprint("TX complete")# Returns true if we've successfully connected and discovered characteristics.def is_connected(self):return self._conn_handle is not None and self._value_handle is not None# Find a device advertising the environmental sensor service.def scan(self, callback=None):self._addr_type = Noneself._addr = Noneself._scan_callback = callbackself._ble.gap_scan(4000, 6000, 6000)# Connect to the specified device (otherwise use cached address from a scan).def connect(self, addr_type=None, addr=None, callback=None):self._addr_type = addr_type or self._addr_typeself._addr = addr or self._addrself._conn_callback = callbackif self._addr_type is None or self._addr is None:return Falseself._ble.gap_connect(self._addr_type, self._addr)return True# Disconnect from current device.def disconnect(self):if not self._conn_handle:returnself._ble.gap_disconnect(self._conn_handle)self._reset()# Issues an (asynchronous) read, will invoke callback with data.def read(self, callback):if not self.is_connected():returnself._read_callback = callbackself._ble.gattc_read(self._conn_handle, self._value_handle)# Sets a callback to be invoked when the device notifies us.def on_notify(self, callback):self._notify_callback = callbackdef _update_value(self, data):# Data is sint16 in degrees Celsius with a resolution of 0.01 degrees Celsius.self._value = ustruct.unpack("<h", data)[0] / 100return self._valuedef value(self):return self._valuedef write(self, v, response=False):# if not self.is_connected():#     returnself._ble.gattc_write(0, 0, v, 1 if response else 0)print("data_send:", v)global v
def demo():time.sleep_ms(2000)ble = bluetooth.BLE()central = BLETemperatureCentral(ble)time.sleep_ms(2000)not_found = Falsedef on_scan(addr_type, addr, name):if addr_type is not None:print("Found sensor addr_type:", addr_type)print("Found sensor addr:", print_hex(addr))print("Found sensor name:", name)global vv = 1else:nonlocal not_foundnot_found = Trueprint("No sensor found.")while True :central.scan(callback=on_scan)time.sleep_ms(2000)# if v == 1:#     central.connect()# while True:#     ble.gattc_notify(1, 1)#     # central.write('123', False)#     time.sleep_ms(1000)if __name__ == "__main__":demo()

测试

Haas506可以搜索到2个不同mac地址的设备，并将mac地址打印。