Suga koubou / Mbed 2 deprecated WeatherMeters_lib

Weather Meters (Sparkfun) http://mbed.org/users/okini3939/notebook/weatherduino-on-mbed/

Dependencies:   mbed

WeatherMeters/WeatherMeters.cpp@0:7f3a988c1be5, 2010-09-27 (annotated)

Committer:
okini3939
Date:
Mon Sep 27 16:03:25 2010 +0000
Revision:
0:7f3a988c1be5

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


okini3939

0:7f3a988c1be5


     1

/*





okini3939

0:7f3a988c1be5


     2

 * mbed library to use a Sparkfun Weather Meters





okini3939

0:7f3a988c1be5


     3

 * Copyright (c) 2010 Hiroshi Suga





okini3939

0:7f3a988c1be5


     4

 * Released under the MIT License: http://mbed.org/license/mit





okini3939

0:7f3a988c1be5


     5

 */





okini3939

0:7f3a988c1be5


     6







okini3939

0:7f3a988c1be5


     7

#include "mbed.h"





okini3939

0:7f3a988c1be5


     8

#include "WeatherMeters.h"





okini3939

0:7f3a988c1be5


     9







okini3939

0:7f3a988c1be5


    10

#define WEATHER_VREF 3.3





okini3939

0:7f3a988c1be5


    11







okini3939

0:7f3a988c1be5


    12

const float tbl_windvane[16][2] = {





okini3939

0:7f3a988c1be5


    13

  {0.0, 33000}, {22.5, 6570}, {45.0, 8200}, {67.5, 891},





okini3939

0:7f3a988c1be5


    14

  {90.0, 1000}, {112.5, 688}, {135.0, 2200}, {157.5, 1410},





okini3939

0:7f3a988c1be5


    15

  {180.0, 3900}, {202.5, 3140}, {225.0, 16000}, {247.5, 14120},





okini3939

0:7f3a988c1be5


    16

  {270.0, 120000}, {292.5, 42120}, {315.0, 64900}, {337.5, 21880} 





okini3939

0:7f3a988c1be5


    17

};





okini3939

0:7f3a988c1be5


    18







okini3939

0:7f3a988c1be5


    19

WeatherMeters::WeatherMeters (PinName p_anemometer, PinName p_windvane, PinName p_raingauge, Weather_mode w_mode) : int01(p_anemometer), int02(p_raingauge), ain01(p_windvane) {





okini3939

0:7f3a988c1be5


    20

    int i;





okini3939

0:7f3a988c1be5


    21







okini3939

0:7f3a988c1be5


    22

    windspeed = 0; windvane = 0; raingauge = 0;





okini3939

0:7f3a988c1be5


    23

    count_anemo = 0; count_rain = 0; time_anemo = 0; time_rain = 0;





okini3939

0:7f3a988c1be5


    24

    for (i = 0; i < 12; i ++) {





okini3939

0:7f3a988c1be5


    25

        buf_anemo[i] = 0;





okini3939

0:7f3a988c1be5


    26

        buf_rain[i] = 0;





okini3939

0:7f3a988c1be5


    27

    }





okini3939

0:7f3a988c1be5


    28







okini3939

0:7f3a988c1be5


    29

    mode = w_mode;





okini3939

0:7f3a988c1be5


    30

    int01.fall(this, &WeatherMeters::int_anemometer);





okini3939

0:7f3a988c1be5


    31

    int02.fall(this, &WeatherMeters::int_raingauge);





okini3939

0:7f3a988c1be5


    32

    ticker01.attach(this, &WeatherMeters::int_timer, 0.25); 





okini3939

0:7f3a988c1be5


    33

}





okini3939

0:7f3a988c1be5


    34







okini3939

0:7f3a988c1be5


    35

float WeatherMeters::get_windspeed() {





okini3939

0:7f3a988c1be5


    36

    float s;





okini3939

0:7f3a988c1be5


    37

    





okini3939

0:7f3a988c1be5


    38

    if (mode == Weather_auto) { 





okini3939

0:7f3a988c1be5


    39

        s = (float)windspeed * 0.667 / 3.0; // 0.667m/s/Hz (/3s)





okini3939

0:7f3a988c1be5


    40

        windspeed = 0;





okini3939

0:7f3a988c1be5


    41

    } else {





okini3939

0:7f3a988c1be5


    42

        s = (float)count_anemo * 0.667 / ((float)time_anemo / 4.0); // 0.667m/s/Hz





okini3939

0:7f3a988c1be5


    43

        time_anemo = 0;





okini3939

0:7f3a988c1be5


    44

        count_anemo = 0;





okini3939

0:7f3a988c1be5


    45

    }





okini3939

0:7f3a988c1be5


    46

    return s;





okini3939

0:7f3a988c1be5


    47

}





okini3939

0:7f3a988c1be5


    48







okini3939

0:7f3a988c1be5


    49

float WeatherMeters::get_windvane() {





okini3939

0:7f3a988c1be5


    50

    int i;





okini3939

0:7f3a988c1be5


    51

    float v;





okini3939

0:7f3a988c1be5


    52







okini3939

0:7f3a988c1be5


    53

    if (windspeed == 0) windvane = ain01;





okini3939

0:7f3a988c1be5


    54

	v = windvane * WEATHER_VREF; // V





okini3939

0:7f3a988c1be5


    55

	v = v / ((WEATHER_VREF - v) / 10000.0); // ohm





okini3939

0:7f3a988c1be5


    56

	for (i = 0; i < 16; i ++) {





okini3939

0:7f3a988c1be5


    57

		if (v > tbl_windvane[i][1] * 0.9 && v < tbl_windvane[i][1] * 1.1) {





okini3939

0:7f3a988c1be5


    58

			return tbl_windvane[i][0];





okini3939

0:7f3a988c1be5


    59

		}





okini3939

0:7f3a988c1be5


    60

	}





okini3939

0:7f3a988c1be5


    61

    return 0;





okini3939

0:7f3a988c1be5


    62

}





okini3939

0:7f3a988c1be5


    63







okini3939

0:7f3a988c1be5


    64

float WeatherMeters::get_raingauge() {





okini3939

0:7f3a988c1be5


    65

    return (float)raingauge * 0.2794; // 0.2794mm/Hz





okini3939

0:7f3a988c1be5


    66

}





okini3939

0:7f3a988c1be5


    67







okini3939

0:7f3a988c1be5


    68

void WeatherMeters::int_anemometer () {





okini3939

0:7f3a988c1be5


    69

    count_anemo ++;





okini3939

0:7f3a988c1be5


    70

}





okini3939

0:7f3a988c1be5


    71







okini3939

0:7f3a988c1be5


    72

void WeatherMeters::int_raingauge () {





okini3939

0:7f3a988c1be5


    73

    count_rain ++;





okini3939

0:7f3a988c1be5


    74

}





okini3939

0:7f3a988c1be5


    75







okini3939

0:7f3a988c1be5


    76

void WeatherMeters::int_timer () {





okini3939

0:7f3a988c1be5


    77

    int i, n;





okini3939

0:7f3a988c1be5


    78

    





okini3939

0:7f3a988c1be5


    79

    if (mode == Weather_auto) {





okini3939

0:7f3a988c1be5


    80

        n = 0;





okini3939

0:7f3a988c1be5


    81

        for (i = 11; i > 0; i --) {





okini3939

0:7f3a988c1be5


    82

            buf_anemo[i] = buf_anemo[i - 1];





okini3939

0:7f3a988c1be5


    83

            n = n + buf_anemo[i];





okini3939

0:7f3a988c1be5


    84

        }





okini3939

0:7f3a988c1be5


    85

        buf_anemo[0] = count_anemo;





okini3939

0:7f3a988c1be5


    86

        n = n + buf_anemo[0];





okini3939

0:7f3a988c1be5


    87

        count_anemo = 0;





okini3939

0:7f3a988c1be5


    88

        if (n > windspeed) {





okini3939

0:7f3a988c1be5


    89

            windspeed = n;





okini3939

0:7f3a988c1be5


    90

            windvane = ain01;





okini3939

0:7f3a988c1be5


    91

        }





okini3939

0:7f3a988c1be5


    92

    } else {





okini3939

0:7f3a988c1be5


    93

        time_anemo ++;





okini3939

0:7f3a988c1be5


    94

    }





okini3939

0:7f3a988c1be5


    95

    





okini3939

0:7f3a988c1be5


    96

	time_rain ++;





okini3939

0:7f3a988c1be5


    97

	if (time_rain >= 4 * 300) {





okini3939

0:7f3a988c1be5


    98

		n = 0;





okini3939

0:7f3a988c1be5


    99

		for (i = 11; i > 0; i --) {





okini3939

0:7f3a988c1be5


   100

			buf_rain[i] = buf_rain[i - 1];





okini3939

0:7f3a988c1be5


   101

			n = n + buf_rain[i];





okini3939

0:7f3a988c1be5


   102

		}





okini3939

0:7f3a988c1be5


   103

		buf_rain[0] = count_rain;





okini3939

0:7f3a988c1be5


   104

		n = n + buf_rain[0];





okini3939

0:7f3a988c1be5


   105

		count_rain = 0;





okini3939

0:7f3a988c1be5


   106

		time_rain = 0;





okini3939

0:7f3a988c1be5


   107

		raingauge = n;





okini3939

0:7f3a988c1be5


   108

	}





okini3939

0:7f3a988c1be5


   109

}