1 |
1: #include <pic18.h>
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2 |
2: #include <stdio.h>
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3 |
3: #include <string.h>
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4 |
4: #include "lcd.h"
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5 |
5: // Delay.h is included inside lcd.c
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6 |
6:
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7 |
7: #define LCD_LENGTH 16
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8 |
8: #define LCD_ROWS 2
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9 |
9:
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10 |
10:
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11 |
11: unsigned char global_Pot_Hi;
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12 |
12: unsigned char global_Pot_Lo;
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13 |
13: unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
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14 |
14: /*void AD_init(void)
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15 |
15: {
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16 |
16: ADON = 1;
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17 |
17: }
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18 |
18: */
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19 |
19: // Nicked from H7
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20 |
20: void ad_init(void)
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21 |
21: {
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22 |
22: // AD Conversion clock
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23 |
23: ADCS0 = 0;
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24 |
24: ADCS1 = 0;
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25 |
25: ADCS2 = 0;
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26 |
26:
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27 |
27: //Select AN0/RA0 for AD source
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28 |
28: // In this (000) setup, it's only RA0/AN0 that does ad convertion.
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29 |
29: CHS0=0;
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30 |
30: CHS1=0;
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31 |
31: CHS2=0;
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32 |
32:
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33 |
33: //Only AN0 is selected for AD and with Vdd/Vss as limits
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34 |
34: PCFG0=0;
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35 |
35: PCFG1=1;
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36 |
36: PCFG2=1;
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37 |
37: PCFG3=1;
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38 |
38:
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39 |
39: //Result is left justified
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40 |
40: ADFM=0;
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41 |
41:
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42 |
42: //Fire up for A/D converter module
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43 |
43: ADON=1;
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44 |
44: }
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45 |
45:
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46 |
46: void rs232_init(void)
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47 |
47: {
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48 |
48: SPEN = 0; // Serial Port Enable Bit... 0 = disabled
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49 |
49: TRISC6 = 0;
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50 |
50: TRISC7 = 1;
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51 |
51: SYNC = 0; // SYNC switches between async(0) and sync(1) mode.
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52 |
52: SPBRG = 25;
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53 |
53: TXSTA = 0x24;
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54 |
54: RCSTA = 0x90;
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55 |
55: SPEN = 1;
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56 |
56: }
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57 |
57:
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58 |
58: void interrupt_init(void)
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59 |
59: {
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60 |
60: // Assumes that all interrupts default is 0
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61 |
61: PEIE = 1;
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62 |
62: GIE = 1;
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63 |
63: RCIE = 1;
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64 |
64: }
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65 |
65:
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66 |
66: void pic18_io_init(void)
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67 |
67: {
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68 |
68: TRISA0 = 1; // analog input
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69 |
69: TRISB1 = 1; // TRISB1-4 Digital input
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70 |
70: TRISB2 = 1;
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71 |
71: TRISB3 = 1;
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72 |
72: TRISB4 = 1;
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73 |
73: }
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74 |
74:
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75 |
75: void interrupt_recieve_handler(void)
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76 |
76: {
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77 |
77: // Handle recieve inputs...
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78 |
78: }
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79 |
79:
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80 |
80: void interrupt interrupt_handler(void)
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81 |
81: {
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82 |
82: // Finds out what interrupt have been trigged, and starts the respective function.
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83 |
83: if(RCIF == 1)
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84 |
84: {
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85 |
85: interrupt_recieve_handler();
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86 |
86: RCIF = 0;
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87 |
87: }
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88 |
88: }
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89 |
89:
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90 |
90: void update_lcd(void)
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91 |
91: {
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92 |
92: char toLCD0[LCD_LENGTH], toLCD1[LCD_LENGTH];
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93 |
93: char B1[LCD_LENGTH];
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94 |
94: char sprintF[LCD_LENGTH];
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95 |
95: lcd_goto(0x00);
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96 |
96: sprintf(toLCD0, "%s", "Ejdesgaard");
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97 |
97: if(RB1)
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98 |
98: {
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99 |
99: sprintf(B1, "Pwr%s", "True");
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100 |
100: }
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101 |
101: else
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102 |
102: {
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103 |
103: sprintf(B1, "%s", "False");
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104 |
104: }
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105 |
105: lcd_puts(B1);
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106 |
106:
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107 |
107: lcd_goto(0x40);
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108 |
108: sprintf(sprintF,"%08d%08d", global_Pot_Hi, global_Pot_Lo);
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109 |
109: lcd_puts(sprintF);
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110 |
110:
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111 |
111: }
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112 |
112:
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113 |
113: void main()
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114 |
114: {
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115 |
115: /////////////////////////////////////////////
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116 |
116: // Running Init's
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117 |
117:
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118 |
118: // Running init for various components.
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119 |
119: //AD_init();
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120 |
120: ad_init();
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121 |
121: rs232_init();
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122 |
122: pic18_io_init();
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123 |
123: lcd_init(0);
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124 |
124:
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125 |
125: /////////////////////////////////////////////
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126 |
126: // Main loop
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127 |
127:
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128 |
128: while(1)
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129 |
129: {
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130 |
130: // Checking if A/D convertion is done, and save the data in global_Pot_??
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131 |
131: if(GODONE==0)
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132 |
132: {
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133 |
133: global_Pot_Hi = ADRESH;
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134 |
134: global_Pot_Lo = ADRESL;
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135 |
135: GODONE = 1;
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136 |
136: }
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137 |
137:
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138 |
138: update_lcd();
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139 |
139: }
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140 |
140: }
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