mirror of
https://github.com/niesteszeck/idDHT11.git
synced 2025-03-14 20:17:28 +03:00
e73b4fb665
Creates three different error codes instead of a single code for three timeout possibilities.
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/*
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FILE: idDHT11.h
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VERSION: 0.1
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PURPOSE: Interrupt driven Lib for DHT11 with Arduino.
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LICENCE: GPL v3 (http://www.gnu.org/licenses/gpl.html)
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DATASHEET: http://www.micro4you.com/files/sensor/DHT11.pdf
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Based on DHT11 library: http://playground.arduino.cc/Main/DHT11Lib
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*/
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#ifndef idDHT11_H__
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#define idDHT11_H__
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#if defined(ARDUINO) && (ARDUINO >= 100)
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#include <Arduino.h>
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#else
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#include <WProgram.h>
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#endif
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#define IDDHT11LIB_VERSION "0.1"
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// state codes
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#define IDDHTLIB_OK 0
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#define IDDHTLIB_ACQUIRING 1
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#define IDDHTLIB_ACQUIRED 2
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#define IDDHTLIB_RESPONSE_OK 3
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// error codes
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#define IDDHTLIB_ERROR_CHECKSUM -1
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#define IDDHTLIB_ERROR_ISR_TIMEOUT -2
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#define IDDHTLIB_ERROR_RESPONSE_TIMEOUT -3
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#define IDDHTLIB_ERROR_DATA_TIMEOUT -4
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#define IDDHTLIB_ERROR_ACQUIRING -5
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#define IDDHTLIB_ERROR_DELTA -6
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#define IDDHTLIB_ERROR_NOTSTARTED -7
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#define IDDHT11_CHECK_STATE if(state == STOPPED) \
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return status; \
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else if(state != ACQUIRED) \
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return IDDHTLIB_ERROR_ACQUIRING;
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class idDHT11
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{
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public:
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idDHT11(int pin, int intNumber,void (*isrCallback_wrapper)());
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void init(int pin, int intNumber,void (*isrCallback_wrapper)());
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void isrCallback();
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int acquire();
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int acquireAndWait();
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float getCelsius();
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float getFahrenheit();
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float getKelvin();
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double getDewPoint();
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double getDewPointSlow();
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float getHumidity();
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bool acquiring();
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int getStatus();
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private:
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void (*isrCallback_wrapper)(void);
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enum states{RESPONSE=0,DATA=1,ACQUIRED=2,STOPPED=3,ACQUIRING=4};
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volatile states state;
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volatile int status;
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volatile byte bits[5];
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volatile byte cnt;
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volatile byte idx;
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volatile int us;
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int intNumber;
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int pin;
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volatile float hum;
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volatile float temp;
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};
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#endif // idDHT11_H__
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