| 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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