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https://github.com/RobTillaart/Arduino.git
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81 lines
1.6 KiB
C++
81 lines
1.6 KiB
C++
//
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// FILE: SHT31_async.ino
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// AUTHOR: Rob Tillaart
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// PURPOSE: demo async interface
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// URL: https://github.com/RobTillaart/SHT31
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#include "Wire.h"
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#include "SHT31.h"
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#define SHT31_ADDRESS 0x44
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uint32_t start;
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uint32_t stop;
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uint32_t cnt;
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SHT31 sht;
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void setup()
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.print("SHT31_LIB_VERSION: \t");
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Serial.println(SHT31_LIB_VERSION);
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Wire.begin();
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sht.begin(SHT31_ADDRESS);
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Wire.setClock(100000);
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uint16_t stat = sht.readStatus();
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Serial.print(stat, HEX);
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Serial.println();
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sht.requestData();
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cnt = 0;
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}
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void loop()
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{
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uint16_t rawTemperature;
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uint16_t rawHumidity;
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if (sht.dataReady())
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{
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start = micros();
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bool success = sht.readData(); // default = true = fast
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stop = micros();
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sht.requestData(); // request for next sample
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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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if (success == false)
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{
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Serial.println("Failed read");
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}
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else
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{
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rawTemperature = sht.getRawTemperature();
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rawHumidity = sht.getRawHumidity();
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Serial.print(rawTemperature, HEX);
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Serial.print(" = ");
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Serial.print(rawTemperature * (175.0 / 65535) - 45, 1); // This formula comes from page 14 of the SHT31 datasheet
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Serial.print("°C\t");
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Serial.print(sht.getRawHumidity(), HEX);
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Serial.print(" = ");
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Serial.print(rawHumidity * (100.0 / 65535), 1); // This formula comes from page 14 of the SHT31 datasheet
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Serial.print("%\t");
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Serial.println(cnt);
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cnt = 0;
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}
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}
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cnt++; // simulate other activity
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}
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// -- END OF FILE --
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