Ein weiterer kabelloser Temperatur- und Feuchtigkeitssensor. Z-Wave Board Z-Uno + Sensirion SHT20

#include <Wire.h> #include "SHT2x.h" int16_t temperature; uint8_t humidity; ZUNO_SETUP_SLEEPING_MODE(ZUNO_SLEEPING_MODE_SLEEPING); #define ZUNO_CHANNEL_TEMPERATURE 1 #define ZUNO_CHANNEL_HUMIDITY 2 ZUNO_SETUP_CHANNELS( ZUNO_SENSOR_MULTILEVEL_TEMPERATURE(getterTemp), ZUNO_SENSOR_MULTILEVEL_HUMIDITY(getterHumid) ); void setup() { Wire.begin(); } void loop() { temperature = SHT2x.GetTemperature(); zunoSendReport(ZUNO_CHANNEL_TEMPERATURE); humidity = SHT2x.GetHumidity(); zunoSendReport(ZUNO_CHANNEL_HUMIDITY); zunoSendDeviceToSleep(); } byte getterTemp(void) { return temperature; } byte getterHumid(void) { return humidity; } 

 /* SHT2x - A Humidity Library for Arduino. Supported Sensor modules: SHT21-Breakout Module - http://www.moderndevice.com/products/sht21-humidity-sensor SHT2x-Breakout Module - http://www.misenso.com/products/001 Created by Christopher Ladden at Modern Device on December 2009. Modified by Paul Badger March 2010 Modified by www.misenso.com on October 2011: - code optimisation - compatibility with Arduino 1.0 This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ //#include <inttypes.h> #include <Wire.h> #include "Arduino.h" #include "SHT2x.h" /****************************************************************************** * Global Functions ******************************************************************************/ /********************************************************** * GetHumidity * Gets the current humidity from the sensor. * * @return float - The relative humidity in %RH **********************************************************/ float SHT2xClass::GetHumidity(void) { return (-6.0 + 125.0 / 65536.0 * (float)(readSensor(eRHumidityNoHoldCmd))); } /********************************************************** * GetTemperature * Gets the current temperature from the sensor. * * @return float - The temperature in Deg C **********************************************************/ float SHT2xClass::GetTemperature(void) { return (-46.85 + 175.72 / 65536.0 * (float)(readSensor(eTempNoHoldCmd))); } /****************************************************************************** * Private Functions ******************************************************************************/ uint16_t SHT2xClass::readSensor(uint8_t command) { uint16_t result = 0 ; uint8_t data[2]; // Sending request to sensor Wire.beginTransmission(eSHT2xAddress); // We have to read some registers from sensor Wire.write(command); // Command Wire.endTransmission(); delay(100); Wire.requestFrom(eSHT2xAddress, 3); //Get 3 bytes byte i = 0; while(Wire.available()) { data[i++] = Wire.read(); } result = data[0] << 8; result += data[1]; result &= ~0x0003; // clear two low bits (status bits) return result; } SHT2xClass SHT2x; 

 /* SHT2x - A Humidity Library for Arduino. Supported Sensor modules: SHT21-Breakout Module - http://www.moderndevice.com/products/sht21-humidity-sensor SHT2x-Breakout Module - http://www.misenso.com/products/001 Created by Christopher Ladden at Modern Device on December 2009. Modified by www.misenso.com on October 2011: - code optimisation - compatibility with Arduino 1.0 This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef SHT2X_H #define SHT2X_H //#include <inttypes.h> typedef enum { eSHT2xAddress = 0x40, } HUM_SENSOR_T; typedef enum { eTempHoldCmd = 0xE3, eRHumidityHoldCmd = 0xE5, eTempNoHoldCmd = 0xF3, eRHumidityNoHoldCmd = 0xF5, } HUM_MEASUREMENT_CMD_T; class SHT2xClass { private: uint16_t readSensor(uint8_t command); uint8_t _data; public: SHT2xClass(){}; float GetHumidity(void); float GetTemperature(void); }; extern SHT2xClass SHT2x; #endif