pythonでesp32をBLE通信　nRFToolBoxで体温計が表示されません

###やりたいこと
pythonでesp32を操作し、BLE通信を行いたいです。
nRFToolBoxでHealth Thermometer Moniterで体温を見れるようにしたいです。

###分からないところ
Temperature measurementでの温度の表し方。
Client Characteristic Configurationの使い方。
それをどうやってgatts_writeに書き込むか

###コード

Python
1import bluetooth
2import struct
3import math
4import time
5
6
7from machine import *
8from micropython import const
9
10
11_IRQ_CENTRAL_CONNECT                 = const(1)
12_IRQ_CENTRAL_DISCONNECT              = const(2)
13_IRQ_GATTC_NOTIFY                    = const(18)
14
15
16_HEALTH_THERM_UUID = bluetooth.UUID(0x1809)
17_DEVICE_INFO_UUID = bluetooth.UUID(0x180A)
18
19
20_TEM_CHAR = (bluetooth.UUID(0x2A1C), bluetooth.FLAG_INDICATE)
21_CLI_CHAR = (bluetooth.UUID(0x2902), bluetooth.FLAG_READ|bluetooth.FLAG_WRITE)
22
23_MAN_CHAR = (bluetooth.UUID(0x2A29), bluetooth.FLAG_READ)
24_MOD_CHAR = (bluetooth.UUID(0x2A24), bluetooth.FLAG_READ)
25_SYS_CHAR = (bluetooth.UUID(0x2A23), bluetooth.FLAG_READ)
26
27
28_HEALTH_THERM_SERVICE = (_HEALTH_THERM_UUID, (_TEMP_CHAR, _CLI_CHAR))
29_DEVICE_INFO_SERVICE  = (_DEVICE_INFO_UUID,  (_MAN_CHAR, _MOD_CHAR, _SYS_CHAR))
30_SERVICES = (_HEALTH_THERM_SERVICE,_DEVICE_INFO_SERVICE)
31
32
33_ADV_APPEARANCE_GENERIC_THERMOMETER = const(768)
34
35
36class BLETemperature:
37    def __init__(self, ble, name="health-therm"):
38      self._ble = ble
39      self._ble.active(True)
40      self._ble.irq(self._irq)
41      self._connections = set()
42      ((self._Temp, self._Cli),(self._Man, self._Mod, self._Sys)) = self._ble.gatts_register_services(_SERVICES)
43      self._payload = advertising_payload(name=name, services=[_HEALTH_THERM_UUID], appearance=_ADV_APPEARANCE_GENERIC_THERMOMETER)
44      self._advertise()
45
46    def _irq(self, event, data):
47      if event == _IRQ_CENTRAL_CONNECT:
48        conn_handle, addr_type, addr = data
49        self._connections.add(conn_handle)
50      elif event == _IRQ_CENTRAL_DISCONNECT:
51        conn_handle, addr_type, addr = data
52        self._connections.remove(conn_handle)
53        self._advertise()
54      elif event == _IRQ_GATTC_NOTIFY:
55        conn_handle, value_handle, notify_data = data
56
57    def set_temperature(self, temp_deg_c, notify=False, indicate=False):
58      self._ble.gatts_write(self._Temp, struct.pack('<h', int(temp_deg_c * 100)))
59      if notify:
60        for conn_handle in self._connections:
61          print("notify!")
62          self._ble.gatts_notify(conn_handle, self._Temp)
63
64    def set_device(self):
65      self._ble.gatts_write(self._Man, "TSMC", True)
66      self._ble.gatts_write(self._Mod, "ESP32-DOWDQ5 Rev 1", True)
67      self._ble.gatts_write(self._Sys, struct.pack('l',14227020), True)
68  
69    def _advertise(self, interval_us=500000):
70      self._ble.gap_advertise(interval_us, adv_data=self._payload)
71 
72def demo():
73    ble = bluetooth.BLE()
74    temp = BLETemperature(ble)
75
76    i = 0
77    
78    temp.set_device()
79    
80    adc = ADC(Pin(32))
81    adc.atten(ADC.ATTN_11DB)
82    adc.read()
83    val = adc.read_u16()
84
85    while True:
86      adc.atten(ADC.ATTN_11DB)
87      val=adc.read_u16()
88      val=val/65535*3.6
89      val=((36000/val)-10000)/1000
90      val=-30.24*math.log(val)+95.664
91      
92      print(val)
93      
94      i = (i + 1) % 5
95      temp.set_temperature(val, notify=i==0, indicate=False)
96      time.sleep_ms(1000)
97
98if __name__ == "__main__":
99  demo()