mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
69 lines
1.3 KiB
Arduino
69 lines
1.3 KiB
Arduino
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// FILE: dht_tuning.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.00
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// PURPOSE: DHT test sketch for DHT22 && Arduino => find minimum time between reads
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// URL:
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//
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// Released to the public domain
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//
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#include <dht.h>
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dht DHT;
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#define DHT22_PIN 5
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void setup()
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{
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Serial.begin(115200);
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Serial.println("DHT TEST PROGRAM ");
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Serial.print("LIBRARY VERSION: ");
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Serial.println(DHT_LIB_VERSION);
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Serial.println();
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Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)\tTime (us)");
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}
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int del = 500;
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void loop()
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{
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// READ DATA
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Serial.print("DHT22, \t");
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uint32_t start = micros();
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int chk = DHT.read22(DHT22_PIN);
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uint32_t stop = micros();
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switch (chk)
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{
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case DHTLIB_OK:
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Serial.print("OK,\t");
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del -= 10;
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break;
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case DHTLIB_ERROR_CHECKSUM:
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Serial.print("Checksum error,\t");
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break;
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case DHTLIB_ERROR_TIMEOUT:
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Serial.print("Time out error,\t");
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del += 10;
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break;
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default:
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Serial.print("Unknown error,\t");
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break;
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}
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// DISPLAY DATA
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Serial.print(DHT.humidity, 1);
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Serial.print(",\t");
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Serial.print(DHT.temperature, 1);
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Serial.print(",\t");
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Serial.print(stop - start);
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Serial.print(",\t");
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Serial.print(del);
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Serial.println();
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delay(del);
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}
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//
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// END OF FILE
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//
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