Program za ispit
Dependencies: mbed
Diff: Dht11.h
- Revision:
- 0:ff77d67fd52a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Dht11.h Fri Mar 29 18:02:34 2019 +0000 @@ -0,0 +1,74 @@ +#ifndef DHT11_H +#define DHT11_H + +#include "mbed.h" + +#define DHTLIB_OK 0 +#define DHTLIB_ERROR_CHECKSUM -1 +#define DHTLIB_ERROR_TIMEOUT -2 + +/** Class for the DHT11 sensor. + * + * Example: + * @code + * #include "mbed.h" + * #include "Dht11.h" + * + * Serial pc(USBTX, USBRX); + * Dht11 sensor(PTD7); + * + * int main() { + * sensor.read() + * pc.printf("T: %f, H: %d\r\n", sensor.getFahrenheit(), sensor.getHumidity()); + * } + * @endcode + */ +class Dht11 +{ +public: + /** Construct the sensor object. + * + * @param pin PinName for the sensor pin. + */ + Dht11(PinName const &p); + + /** Update the humidity and temp from the sensor. + * + * @returns + * 0 on success, otherwise error. + */ + int read(); + + /** Get the temp(f) from the saved object. + * + * @returns + * Fahrenheit float + */ + float getFahrenheit(); + + /** Get the temp(c) from the saved object. + * + * @returns + * Celsius int + */ + int getCelsius(); + + /** Get the humidity from the saved object. + * + * @returns + * Humidity percent int + */ + int getHumidity(); + +private: + /// percentage of humidity + int _humidity; + /// celsius + int _temperature; + /// pin to read the sensor info on + DigitalInOut _pin; + /// times startup (must settle for at least a second) + Timer _timer; +}; + +#endif