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Update DHT11.h

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Signed-off-by: DrJPK <91477569+DrJPK@users.noreply.github.com>
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DrJPK 2023-09-27 13:33:56 +10:00 committed by GitHub
parent 324998ee8a
commit 3ebf6d2909
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1 changed files with 5 additions and 2 deletions
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src/DHT11.h
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@ -48,6 +48,7 @@ public:
// Constants to represent error codes.
static const int ERROR_CHECKSUM = 254; // Error code indicating checksum mismatch.
static const int ERROR_TIMEOUT = 253; // Error code indicating a timeout occurred during reading.
static const int ERROR_TOOFREQUENT = 252; // Error code indicating that polling frequency is too high
static const int TIMEOUT_DURATION = 300; // Duration (in milliseconds) to wait before timing out.
/**
@ -62,14 +63,16 @@ private:
int _pin; // Pin number used for communication with the DHT11 sensor.
int _temperature; // Holds the last known value of the Temperature.
int _humidity; // Holds the last known value of the Humidity.
long _lastPollTime; //Value of millis() when sensor last polled. DHT11 cannot be polled faster than 1Hz
long _lastPollTime = 0; //Value of millis() when sensor last polled. DHT11 cannot be polled faster than 1Hz
static const int _pollTime = 1000;
/**
* Reads the Temperature and Humidity data from the DHT11 and saves them to the private variables
* _temperature and _humidity
*
* @return: Returns 0 or an error code
*/
void readSensor();
int readSensor();
/**
* Reads a byte of data from the DHT11 sensor.