driver_mbed_TH02.h

00001 /*
00002  * TH02_dev.h
00003  * Driver for DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR
00004  *  
00005  * Copyright (c) 2014 seeed technology inc.
00006  * Website    : www.seeed.cc
00007  * Author     : Oliver Wang
00008  * Create Time: April 2014
00009  * Change Log :
00010  *
00011  * The MIT License (MIT)
00012  *
00013  * Permission is hereby granted, free of charge, to any person obtaining a copy
00014  * of this software and associated documentation files (the "Software"), to deal
00015  * in the Software without restriction, including without limitation the rights
00016  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00017  * copies of the Software, and to permit persons to whom the Software is
00018  * furnished to do so, subject to the following conditions:
00019  *
00020  * The above copyright notice and this permission notice shall be included in
00021  * all copies or substantial portions of the Software.
00022  *
00023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00024  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00025  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00026  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00027  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00028  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00029  * THE SOFTWARE.
00030  */
00031  
00032 #ifndef _TH02_DEV_H
00033 #define _TH02_DEV_H
00034 
00035 /****************************************************************************/
00036 /***        Including Files                                               ***/
00037 /****************************************************************************/
00038 // #include <Wire.h>
00039 // #include <Arduino.h>
00040  # include "mbed.h"
00041 
00042 /****************************************************************************/
00043 /***        Macro Definitions                                             ***/
00044 /****************************************************************************/
00045 // #define TH02_I2C_DEV_ID      0x40
00046 const int TH02_I2C_DEV_ID =  0x40<<1;
00047 //Address for mbed
00048 
00049 #define REG_STATUS           0x00 
00050 #define REG_DATA_H           0x01
00051 #define REG_DATA_L           0x02
00052 #define REG_CONFIG           0x03
00053 #define REG_ID               0x11
00054 
00055 #define STATUS_RDY_MASK      0x01    //poll RDY,0 indicate the conversion is done
00056 
00057 #define CMD_MEASURE_HUMI     0x01    //perform a humility measurement
00058 #define CMD_MEASURE_TEMP     0x11    //perform a temperature measurement
00059 
00060 #define TH02_WR_REG_MODE      0xC0
00061 #define TH02_RD_REG_MODE      0x80
00062 /****************************************************************************/
00063 /***        Class Definition                                              ***/
00064 /****************************************************************************/
00065 class TH02_dev
00066 {
00067 public:
00068     void begin();
00069     uint8_t isAvailable();
00070     float ReadTemperature(void);
00071     float ReadHumidity(void);
00072 private:
00073     void TH02_IIC_WriteCmd(uint8_t u8Cmd);
00074     uint8_t TH02_IIC_ReadReg(uint8_t u8Reg);
00075     void TH02_IIC_WriteReg(uint8_t u8Reg,uint8_t u8Data);
00076     uint16_t TH02_IIC_ReadData(void);
00077     uint16_t TH02_IIC_ReadData2byte(void);
00078 };
00079 
00080 extern TH02_dev myTH02;
00081 
00082 #endif  // _TH02_DEV_H