root / logic / trunk / src / drv_comm / generator.c @ 93
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1 | 71 | Janez1 | #include <stdio.h> |
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2 | #include <stdlib.h> |
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3 | #include <time.h> |
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4 | #include <string.h> |
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5 | #include <unistd.h> |
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6 | |||
7 | #include "generator.h" |
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8 | |||
9 | //funkcija:
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10 | int generate_value() {
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11 | // nastavitev, minimalne in maksimalne temperature:
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12 | //funkcija, torej od ure 00:00 raste od minimalne do maximalne, ki jo dosee pri uri 12:00 in nato spet pada do minimalne pri 24:00
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13 | double minimum=20; |
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14 | double maximum=27; |
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15 | |||
16 | time_t now; |
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17 | struct tm *ts;
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18 | char buf1[80]; |
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19 | |||
20 | now = time(NULL);
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21 | |||
22 | ts = localtime(&now); |
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23 | strcpy(buf1, asctime(ts)); |
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24 | |||
25 | int x1 = buf1[11]-48; |
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26 | int x2 = buf1[12]-48; |
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27 | int m1 = buf1[14]-48; |
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28 | int m2 = buf1[15]-48; |
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29 | |||
30 | int minutes = (x1*10+x2)*60 + m1*10+m2; |
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31 | int variable = minutes;
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32 | |||
33 | if(variable>720) { |
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34 | variable= 720-(variable-720); |
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35 | } |
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36 | |||
37 | double k = ((double)variable)/((double)720); |
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38 | |||
39 | //funkcija vraca vrednost na eno decimalko natancno, podobno kot preproste i2c naprave
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40 | return (int) (minimum + k * (maximum-minimum))*10; |
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41 | } |
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42 | //*
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43 | char *int_to_str(int nbr) |
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44 | { |
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45 | int div;
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46 | int len;
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47 | int i;
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48 | char *res;
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49 | |||
50 | res = malloc(4 * sizeof(*res)); |
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51 | i = 0;
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52 | while (i < 3) |
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53 | res[i++] = '\0';
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54 | res[3] = '\0'; |
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55 | i = 0;
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56 | div = 1;
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57 | len = 1;
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58 | while (nbr / div >= 10) |
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59 | { |
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60 | div *= 10;
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61 | len++; |
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62 | } |
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63 | while (len)
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64 | { |
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65 | res[i++] = '0' + (nbr / div);
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66 | len--; |
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67 | nbr %= div; |
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68 | div /= 10;
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69 | } |
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70 | return (res);
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71 | } |
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72 | /**/ |