M5Stackで計測した温度データをLINEに送信してみた

const char* host = "notify-api.line.me";
const char* token = "<発行したトークン>";

String query = String("message=") + msg;
String request = String("") +
               "POST /api/notify HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Authorization: Bearer " + token + "\r\n" +
               "Content-Length: " + String(query.length()) +  "\r\n" + 
               "Content-Type: application/x-www-form-urlencoded\r\n\r\n" +
                query + "\r\n";

#include <M5Stack.h>
#include <WiFiClientSecure.h>

void Line_notify(String msg);
float TempMeasurement();

const char* ssid = "************";
const char* password = "***************";

const char* host = "notify-api.line.me";
const char* token = "***********************************";
WiFiClientSecure client;  

int address = 0x48; // ADT7410温度センサのアドレス

void setup() {
  M5.begin();
  M5.Lcd.setTextSize(2);

  // 内部プルアップ抵抗有効化
  pinMode(21, INPUT_PULLUP);
  pinMode(22, INPUT_PULLUP);
  Serial.begin(9600); // 通信速度を9600bpsに設定
  Wire.begin(); // I2Cバスにマスタとして接続
  WiFi.begin(ssid, password);
  while(WiFi.status() != WL_CONNECTED){
    M5.Lcd.print('.');
    delay(500);
  }
  M5.Lcd.print("\r\nWiFi connected\r\nIP address: ");
  M5.Lcd.println(WiFi.localIP());
  delay(2000);
}

void loop() {
  M5.update();
  if (M5.BtnA.pressedFor(100)) {
    float temp = TempMeasurement(); // 温度データを取得
    char msg[100];
    sprintf(msg, "Teperature: %2.0f 'C", temp);
    Line_notify(msg); // LINE Notifyへリクエスト送信
    M5.Lcd.setTextSize(2);
    M5.Lcd.println(msg);
  }
}

void Line_notify(String msg) {
  client.setInsecure();
  if (!client.connect(host, 443)) {
    delay(2000);
    M5.Lcd.print("Not Connected");
    return;
  }
  String query = String("message=") + msg;
  String request = String("") +
               "POST /api/notify HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Authorization: Bearer " + token + "\r\n" +
               "Content-Length: " + String(query.length()) +  "\r\n" + 
               "Content-Type: application/x-www-form-urlencoded\r\n\r\n" +
                query + "\r\n";
  client.print(request);
  M5.Lcd.setTextSize(1);
  while (client.connected()) {
    String line = client.readStringUntil('\n');
    M5.Lcd.println(line);
    if (line == "\r") {
      break;
    }
  }
  delay(2000);
}

float TempMeasurement(){
  uint16_t data;
  float temp;

  Wire.requestFrom(address, 2); // ADT7410に2byteのデータを要求
  data = Wire.read() << 8; // 1byte分読み取りし、1byte左シフト
  data |= Wire.read(); // 1byte分読み取りし、前回値に加算
  data >>= 3; // 3bit右シフト
  
  if(data & 0x1000){ // bit 12が1のとき
    temp = (float)(data-8192) / 16.0; // 負の温度換算
  }
  else{
    temp = (float)data / 16.0; // 正の温度換算
  }

  return temp;
}