Wed, 20 Aug 2014 12:02:49 +0200
Made a function to send arrays to the server. The room temperature and humidity are now displayed at once when the dashboard is loaded.
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1 | /* |
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2 | * lcd-pcf8574.c: |
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3 | * Text-based LCD driver library code |
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4 | * This is designed to drive the HD44780U LCD display connected via |
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5 | * a "LCM1602 IIC A0 A1 A2" board with a PCF8574 I2C controller. |
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6 | * |
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7 | * Copyright (c) 2012-2013 Gordon Henderson. |
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8 | * Copyright (c) 2014 Michiel Broek. |
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9 | *********************************************************************** |
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10 | * |
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11 | * mbsePi is free software: you can redistribute it and/or modify |
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12 | * it under the terms of the GNU Lesser General Public License as published by |
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13 | * the Free Software Foundation, either version 3 of the License, or |
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14 | * (at your option) any later version. |
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15 | * |
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16 | * mbsePi is distributed in the hope that it will be useful, |
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | * GNU Lesser General Public License for more details. |
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20 | * |
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21 | * You should have received a copy of the GNU Lesser General Public License |
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22 | * along with wiringPi. If not, see <http://www.gnu.org/licenses/>. |
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23 | *********************************************************************** |
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24 | */ |
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25 | |
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26 | #include "thermferm.h" |
106 | 27 | #include "lcd-pcf8574.h" |
28 | ||
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29 | |
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30 | #ifdef HAVE_WIRINGPI_H |
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31 | |
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32 | int lcdHandle; |
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33 | |
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34 | struct lcdDataStruct |
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35 | { |
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36 | int bits, rows, cols ; |
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37 | int rsPin, strbPin ; |
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38 | int dataPins [8] ; |
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39 | int cx, cy ; |
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40 | }; |
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41 | |
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42 | extern struct lcdDataStruct *lcds [MAX_LCDS]; |
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43 | extern sys_config Config; |
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44 | |
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45 | |
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46 | |
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47 | /* |
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48 | * setBacklight: |
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49 | ********************************************************************************* |
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50 | */ |
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51 | |
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52 | void setBacklight (int value) |
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53 | { |
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54 | pinMode (AF_BACKLIGHT, OUTPUT) ; |
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55 | digitalWrite (AF_BACKLIGHT, (value & 1)) ; |
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56 | } |
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57 | |
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58 | |
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59 | |
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60 | /* |
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61 | * initLCD: |
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62 | ********************************************************************************* |
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63 | */ |
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64 | |
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65 | int initLCD (int cols, int rows) |
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66 | { |
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67 | if (!((rows == 1) || (rows == 2) || (rows == 4))) { |
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68 | fprintf (stderr, "rows must be 1, 2 or 4\n") ; |
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69 | return EXIT_FAILURE ; |
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70 | } |
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71 | |
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72 | if (!((cols == 16) || (cols == 20))) { |
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73 | fprintf (stderr, "cols must be 16 or 20\n") ; |
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74 | return EXIT_FAILURE ; |
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75 | } |
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76 | |
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77 | pcf8574Setup(AF_BASE, 0x27) ; |
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78 | pinMode (AF_RW, OUTPUT) ; |
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79 | digitalWrite (AF_RW, LOW) ; // Not used with wiringPi - always in write mode |
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80 | |
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81 | /* |
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82 | * The other control pins are initialised with lcdInit () |
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83 | */ |
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84 | lcdHandle = lcdInit (rows, cols, 4, AF_RS, AF_E, AF_DB4, AF_DB5, AF_DB6, AF_DB7, 0, 0, 0, 0) ; |
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85 | if (lcdHandle < 0) { |
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86 | fprintf (stderr, "lcdInit failed\n") ; |
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87 | return -1 ; |
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88 | } |
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89 | |
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90 | lcdClear (lcdHandle) ; |
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91 | setBacklight (1) ; |
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92 | |
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93 | return 0 ; |
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94 | } |
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95 | |
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96 | |
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97 | #endif |