105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
//
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// FILE: dht22_test.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.03
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// PURPOSE: DHT library test sketch for DHT22 && Arduino
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// URL:
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// HISTORY:
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// 0.1.03 extended stats for all errors
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// 0.1.02 added counters for error-regression testing.
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// 0.1.01
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// 0.1.00 initial version
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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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struct
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{
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uint32_t total;
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uint32_t ok;
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uint32_t crc_error;
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uint32_t time_out;
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uint32_t connect;
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uint32_t ack_l;
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uint32_t ack_h;
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uint32_t unknown;
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} stat = { 0,0,0,0,0,0,0,0};
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void setup()
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{
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Serial.begin(115200);
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Serial.println("dht22_test.ino");
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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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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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stat.total++;
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switch (chk)
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{
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case DHTLIB_OK:
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stat.ok++;
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Serial.print("OK,\t");
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break;
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case DHTLIB_ERROR_CHECKSUM:
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stat.crc_error++;
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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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stat.time_out++;
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Serial.print("Time out error,\t");
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break;
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default:
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stat.unknown++;
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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.println();
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if (stat.total % 20 == 0)
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{
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Serial.println("\nTOT\tOK\tCRC\tTO\tUNK");
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Serial.print(stat.total);
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Serial.print("\t");
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Serial.print(stat.ok);
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Serial.print("\t");
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Serial.print(stat.crc_error);
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Serial.print("\t");
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Serial.print(stat.time_out);
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Serial.print("\t");
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Serial.print(stat.connect);
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Serial.print("\t");
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Serial.print(stat.ack_l);
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Serial.print("\t");
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Serial.print(stat.ack_h);
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Serial.print("\t");
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Serial.print(stat.unknown);
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Serial.println("\n");
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}
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delay(2000);
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}
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//
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// END OF FILE
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//
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