setAdvData.cpp

void setAdvData(BLEAdvertising *pAdvertising) {
    bme280.get_sensor_data(&data);
    Serial.printf("temp: %.1f, humid: %.1f, press: %.1f\r\n", data.temperature, data.humidity, data.pressure / 100);
    uint16_t temp = (uint16_t)(data.temperature * 100);
    uint16_t humid = (uint16_t)(data.humidity * 100);
    uint16_t press = (uint16_t)(data.pressure / 10);

    BLEAdvertisementData oAdvertisementData = BLEAdvertisementData();

    oAdvertisementData.setFlags(0x06); // BR_EDR_NOT_SUPPORTED | LE General Discoverable Mode

    std::string strServiceData = "";
    strServiceData += (char)0x0a;   // 長さ
    strServiceData += (char)0xff;   // AD Type 0xFF: Manufacturer specific data
    strServiceData += (char)0xff;   // Test manufacture ID low byte
    strServiceData += (char)0xff;   // Test manufacture ID high byte
    strServiceData += (char)seq;                   // シーケンス番号
    strServiceData += (char)(temp & 0xff);         // 温度の下位バイト
    strServiceData += (char)((temp >> 8) & 0xff);  // 温度の上位バイト
    strServiceData += (char)(humid & 0xff);        // 湿度の下位バイト
    strServiceData += (char)((humid >> 8) & 0xff); // 湿度の上位バイト
    strServiceData += (char)(press & 0xff);        // 気圧の下位バイト
    strServiceData += (char)((press >> 8) & 0xff); // 気圧の上位バイト

    oAdvertisementData.addData(strServiceData);
    pAdvertising->setAdvertisementData(oAdvertisementData);
}