LM75A.h

00001 /* Author: Edoardo De Marchi */
00002 /* Copyright (C) 2012 mbed.org, MIT License
00003  *
00004  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00005  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00006  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00007  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00008  * furnished to do so, subject to the following conditions:
00009  *
00010  * The above copyright notice and this permission notice shall be included in all copies or
00011  * substantial portions of the Software.
00012  *
00013  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00014  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00015  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00016  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00018  */
00019 
00020 
00021 
00022 
00023 #pragma once 
00024  
00025 #include "mbed.h"
00026  
00027  
00028 #define TEMP_REG_ADDR 0x00          // Temperature address
00029  
00030  
00031 /* Library for the LM75A temperature sensor.
00032 The LM75A is an I2C digital temperature sensor in a small SOP-8 package, 
00033 with a 0.5C resolution and 2C accuracy
00034 */
00035  
00036 class LM75A{        // Creates an instance of the class
00037     public:
00038         
00039            /** Create an LM75A object connected to the specified I2C object and using the specified deviceAddress
00040             *
00041             * @param sda The I2C port data
00042             * @param scl The I2C port clock
00043             * @param addr The address of the MMA7660FC
00044             */
00045       LM75A(PinName sda, PinName scl, int addr);
00046     
00047     
00048             /** Destroys an LM75A object
00049             *
00050             */
00051       ~LM75A();
00052     
00053             /** Reads the current temperature
00054             *
00055             * @param returns Return the Temperature value 
00056             */
00057       float read_T();
00058       
00059             /** Reads from specified LM75A register
00060             *
00061             * @param addr Pointer register
00062             * @param returns Return the data from the register 
00063             */
00064       char read_reg(char addr);
00065       
00066             /** Writes to specified LM75A register
00067             *
00068             * @param addr Pointer register
00069             * @param data Data to write
00070             */ 
00071       void write_reg(char addr, char data);
00072       
00073     
00074     private:
00075       I2C m_i2c;
00076       int m_addr;   
00077       char reg_addr;
00078 };
00079