Statistics
| Branch: | Revision:

ddr4s / fw / wiringPi / examples / rht03.c @ 32:cadb9025f1e0

History | View | Annotate | Download (2.15 KB)

1
/*
2
 * rht03.c:
3
 *        Driver for the MaxDetect series sensors
4
 *
5
 * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
6
 ***********************************************************************
7
 * This file is part of wiringPi:
8
 *        https://projects.drogon.net/raspberry-pi/wiringpi/
9
 *
10
 *    wiringPi is free software: you can redistribute it and/or modify
11
 *    it under the terms of the GNU Lesser General Public License as published by
12
 *    the Free Software Foundation, either version 3 of the License, or
13
 *    (at your option) any later version.
14
 *
15
 *    wiringPi is distributed in the hope that it will be useful,
16
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
17
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18
 *    GNU Lesser General Public License for more details.
19
 *
20
 *    You should have received a copy of the GNU Lesser General Public License
21
 *    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
22
 ***********************************************************************
23
 */
24

    
25
#include <stdio.h>
26

    
27
#include <wiringPi.h>
28
#include <maxdetect.h>
29

    
30
#define        RHT03_PIN        7
31

    
32
/*
33
 ***********************************************************************
34
 * The main program
35
 ***********************************************************************
36
 */
37

    
38
int main (void)
39
{
40
  int result, temp, rh ;
41
  int minT, maxT, minRH, maxRH ;
42

    
43
  int numGood, numBad ;
44

    
45
  wiringPiSetup () ;
46
  piHiPri       (55) ;
47

    
48
  minT =  1000 ;
49
  maxT = -1000 ;
50

    
51
  minRH =  1000 ;
52
  maxRH = -1000 ;
53

    
54
  numGood = numBad = 0 ;
55

    
56
  for (;;)
57
  {
58
    delay (100) ;
59

    
60
    result = readRHT03 (RHT03_PIN, &temp, &rh) ;
61

    
62
    if (!result)
63
    {
64
      printf (".") ;
65
      fflush (stdout) ;
66
      ++numBad ;
67
      continue ;
68
    }
69

    
70
    ++numGood ;
71

    
72
    if (temp < minT) minT = temp ;
73
    if (temp > maxT) maxT = temp ;
74
    if (rh  < minRH) minRH = rh ;
75
    if (rh  > maxRH) maxRH = rh ;
76

    
77
    printf ("\r%6d, %6d: ", numGood, numBad) ;
78
    printf ("Temp: %5.1f, RH: %5.1f%%", temp / 10.0, rh / 10.0) ;
79
    printf ("  Max/Min Temp: %5.1f:%5.1f", maxT / 10.0, minT / 10.0) ;
80
    printf ("  Max/Min RH: %5.1f:%5.1f", maxRH / 10.0, minRH / 10.0) ;
81

    
82
    printf ("\n") ;
83
  }
84

    
85
  return 0 ;
86
}