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86 lines
2.2 KiB
86 lines
2.2 KiB
/* |
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* rht03.c: |
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* Driver for the MaxDetect series sensors |
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* |
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* Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net> |
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*********************************************************************** |
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* This file is part of wiringPi: |
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* https://projects.drogon.net/raspberry-pi/wiringpi/ |
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* |
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* wiringPi is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* wiringPi is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with wiringPi. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************** |
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*/ |
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#include <stdio.h> |
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#include <wiringPi.h> |
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#include <maxdetect.h> |
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#define RHT03_PIN 7 |
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/* |
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*********************************************************************** |
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* The main program |
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*********************************************************************** |
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*/ |
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int main (void) |
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{ |
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int result, temp, rh ; |
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int minT, maxT, minRH, maxRH ; |
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int numGood, numBad ; |
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wiringPiSetup () ; |
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piHiPri (55) ; |
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minT = 1000 ; |
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maxT = -1000 ; |
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minRH = 1000 ; |
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maxRH = -1000 ; |
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numGood = numBad = 0 ; |
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for (;;) |
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{ |
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delay (100) ; |
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result = readRHT03 (RHT03_PIN, &temp, &rh) ; |
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if (!result) |
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{ |
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printf (".") ; |
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fflush (stdout) ; |
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++numBad ; |
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continue ; |
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} |
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++numGood ; |
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if (temp < minT) minT = temp ; |
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if (temp > maxT) maxT = temp ; |
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if (rh < minRH) minRH = rh ; |
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if (rh > maxRH) maxRH = rh ; |
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printf ("\r%6d, %6d: ", numGood, numBad) ; |
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printf ("Temp: %5.1f, RH: %5.1f%%", temp / 10.0, rh / 10.0) ; |
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printf (" Max/Min Temp: %5.1f:%5.1f", maxT / 10.0, minT / 10.0) ; |
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printf (" Max/Min RH: %5.1f:%5.1f", maxRH / 10.0, minRH / 10.0) ; |
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printf ("\n") ; |
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} |
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return 0 ; |
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}
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