##環境
・　IoTデバイス : ESP-WROOM-32
・　ファームウエア : MicroPython1.13
・　温度センサー : ADT7410
・　サーバー : Ubuntu 20.04 LTS

##ソースコード(ESP32)
・　ADT7410用ライブラリ

ADTLib.py

from machine import I2C, Pin
p21 = Pin(26, Pin.IN, Pin.PULL_UP)
p22 = Pin(27, Pin.IN, Pin.PULL_UP)

class ADT7410:
    def __init__(self):
        self.i2c = I2C(scl = Pin(27), sda = Pin(26), freq = 10000)

    def getTemperature(self):
        data = self.i2c.readfrom_mem(0x48, 0x00, 2)
        temp = (data[0] << 8 | data[1]) >> 3
        if(temp >= 4096):
            temp -= 8192
        value = temp * 0.0625
        return value

    def temperature(self):
        temp = self.getValue()
        return temp

・　ADT7410からデータを取得しサーバーに送信するプログラム

send.py

from machine import Pin, RTC
import network, urequests, utime
import ujson
import ADTLib
import usocket

#日付取得
def get_jst():
    rtc = RTC()
    url_jst = "http://worldtimeapi.org/api/timezone/Asia/Tokyo" # see http://worldtimeapi.org/timezones
    retry_delay = 5000 # interval time of retry after a failed Web query
    response = urequests.get(url_jst)
    # parse JSON
    parsed = response.json()
    #parsed=ujson.loads(res) # in case string
    datetime_str = str(parsed["datetime"])
    year = int(datetime_str[0:4])
    month = int(datetime_str[5:7])
    day = int(datetime_str[8:10])
    hour = int(datetime_str[11:13])
    minute = int(datetime_str[14:16])
    second = int(datetime_str[17:19])
    subsecond = int(round(int(datetime_str[20:26]) / 10000))
    # update internal RTC
    rtc.datetime((year, month, day, 0, hour, minute, second, subsecond))
    # setup day of the week
    daysOfTheWeek = "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
    tm = utime.localtime(utime.mktime(utime.localtime()))
    # generate formated date/time strings from internal RTC
    date_str = "{0:4d}/{1:02d}/{2:02d}".format(*rtc.datetime())
    time_str = "{4:02d}:{5:02d}:{6:02d}".format(*rtc.datetime())
    date_ok = date_str + " " + time_str
    return date_ok

HOST = 'IPアドレス'
PORT = 8080

date = get_jst()
#温度データ取得
adt = ADTLib.ADT7410()
temp = adt.getTemperature()

data = {"temp" : temp, "date" : date}

#ソケットの作成
sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
saddr = usocket.getaddrinfo(HOST, PORT)[0][-1]

#サーバーに接続
sock.connect(saddr)

#データ送信
sock.sendall(bytes(ujson.dumps(data), "utf-8"))

#終了
sock.close()

##ソースコード(サーバー)
・　データを受け取るプログラム

server.py

class MyTCPHandler(socketserver.BaseRequestHandler):

    def handle(self):
        self.data = self.request.recv(1024).strip()


        print("{} wrote:".format(self.client_address[0]))
        print(self.data)

if __name__ == "__main__":
    HOST, PORT = "IPアドレス", 8080

    with socketserver.TCPServer((HOST, PORT), MyTCPHandler) as server:
        server.serve_forever()

##実行結果
・ESP32側

{"date": "2021/07/15 23:27:37", "temp": 28.25}'

・　サーバー側

b'{"date": "2021/07/15 23:27:37", "temp": 28.25}'

##参考文献
[1]MicroPythonのTCP通信をパケットキャプチャする