Suga koubou / Mbed 2 deprecated WeatherStation

mbed Weather Platform firmware http://mbed.org/users/okini3939/notebook/mbed-weather-platform-firmware/

Dependencies:   ChaNFSSD EthernetNetIf I2CLEDDisp Agentbed ChaNFSUSB ILinterpreter mbed BMP085 WeatherMeters ConfigFile ChaNFS I2CLCD

SHT_v1/SHT.h@8:bed0b81794ba, 2012-03-16 (annotated)

Committer:
okini3939
Date:
Fri Mar 16 15:26:46 2012 +0000
Revision:
8:bed0b81794ba
Parent:
0:bdb53686c194 

        

        
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/* mbed module to use a Sensirion SHT1x /SHT7x sensor





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 * Copyright (c) 2007-2009 Stephen McGarry





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 * Released under the MIT License: http://mbed.org/license/mit





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 */





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#ifndef SHT_H





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#define SHT_H





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#include "mbed.h"





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enum SHT_acc {





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    SHT_low=0,





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    SHT_high=1





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};





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typedef unsigned char byte;





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class SHT : public Base {





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public:





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    /* Constructor: SHT





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     *  Creates an SHT interface connected to specific pins.





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     *





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     */





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    SHT(PinName p_sclk, PinName p_data, SHT_acc p_accuracy);





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    /* Functions





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     */





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    float get_temperature();     // get the most recent temp reading





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    float get_humidity();        // get the most recent humidity reading





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    float get_dewpoint();        // get the most recent dewpoint value





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    void update(SHT_acc accuracy); // update stored values from sensor





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protected:





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    byte read_byte(bool send_ack);





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    char write_byte(byte value);





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    void trans_start(void);





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    void connection_reset(void);





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    char soft_reset();





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    char read_status(byte &value);





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    char write_status(byte value);





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    char measure(int &value, byte mode);





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    void calculate();





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    DigitalOut sclk;





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    DigitalInOut data;





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    SHT_acc accuracy;    // will we use high or low accuracy mode on the sensor





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    float temperature;    // calculated from sensor reading





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    float humidity;





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    float dewpoint;





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    int temp,hum;        // integer values from sensor before conversion





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    enum commands {





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        com_read_status_reg=0x06,





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        com_write_status_reg=0x07,





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        com_measure_temp=0x03,





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        com_measure_humid=0x05,





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        com_reset=0x1E





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    };





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    enum acks {





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        no_ack=0,





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        send_ack=1





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    };





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};





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#endif