| 1 |
1: #include <pic18.h>
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| 2 |
2: #include <stdio.h>
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| 3 |
3: #include <htc.h>
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| 4 |
4: #include <string.h>
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| 5 |
5:
|
| 6 |
6: #include "lcd.h"
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| 7 |
7: #include "Delay.h"
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| 8 |
8: // Delay.h is included inside lcd.c
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| 9 |
9:
|
| 10 |
10: #define LCD_LENGTH 16
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| 11 |
11: #define LCD_ROWS 2
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| 12 |
12: #define BUFFER 128
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| 13 |
13: #define PWRFAIL RB1
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| 14 |
14: #define FIREDET RB2
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| 15 |
15: #define FEEDING RB3
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| 16 |
16: #define EMPTYTANK RB4
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| 17 |
17:
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| 18 |
18:
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| 19 |
19: unsigned char global_Pot_Hi, global_Pot_Lo;
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| 20 |
20: unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
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| 21 |
21: unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[BUFFER];
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| 22 |
22: bit global_recieve_done = 0, global_interval_changed = 0;
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| 23 |
23: unsigned int global_serial_byte_counter = 0, global_sms_counter = 1, global_time_counter = 0;
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| 24 |
24: unsigned int global_emergency_counter = 600, global_time_interval = 3600;
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| 25 |
25: unsigned char global_temp = 0;
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| 26 |
26:
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| 27 |
27: unsigned short global_imei_tversum;
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| 28 |
28:
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| 29 |
29: unsigned char cell_nr[15] = ""; // = "21681784";
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| 30 |
30: bit global_modem_init = 0;
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| 31 |
31:
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| 32 |
32: __EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
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| 33 |
33: __EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
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| 34 |
34:
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| 35 |
35: void serial_recieved(void);
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| 36 |
36: void serial_send(void);
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| 37 |
37: void update_lcd(void);
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| 38 |
38: void convertTemp(void);
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| 39 |
39: void timer1_interrupt(void);
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| 40 |
40: void on_recieve(void);
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| 41 |
41: void on_initial_recieve(void);
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| 42 |
42:
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| 43 |
43:
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| 44 |
44: void reset_recieve_buffer(void)
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| 45 |
45: {
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| 46 |
46: global_recieve_done = 0;
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| 47 |
47: global_serial_byte_counter=0;
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| 48 |
48: }
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| 49 |
49:
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| 50 |
50:
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| 51 |
51: void ad_init(void) // Nicked from H7
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| 52 |
52: {
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| 53 |
53: // AD Conversion clock
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| 54 |
54: ADCS0 = 0;
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| 55 |
55: ADCS1 = 0;
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| 56 |
56: ADCS2 = 0;
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| 57 |
57:
|
| 58 |
58: //Select AN0/RA0 for AD source
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| 59 |
59: // In this (000) setup, it's only RA0/AN0 that does ad convertion.
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| 60 |
60: CHS0=0;
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| 61 |
61: CHS1=0;
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| 62 |
62: CHS2=0;
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| 63 |
63:
|
| 64 |
64: //Only AN0 is selected for AD and with Vdd/Vss as limits
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| 65 |
65: PCFG0=0;
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| 66 |
66: PCFG1=1;
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| 67 |
67: PCFG2=1;
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| 68 |
68: PCFG3=1;
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| 69 |
69:
|
| 70 |
70: //Result is right justified
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| 71 |
71: ADFM=1;
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| 72 |
72:
|
| 73 |
73: //Fire up for A/D converter module
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| 74 |
74: ADON=1;
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| 75 |
75: }
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| 76 |
76:
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| 77 |
77: void rs232_init(void)
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| 78 |
78: {
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| 79 |
79: SPEN = 0; // Serial Port Enable Bit... 0 = disabled
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| 80 |
80: TRISC6 = 0;
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| 81 |
81: TRISC7 = 1;
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| 82 |
82:
|
| 83 |
83: SPBRG = 207; // 1200 baud rate... 25 = 9600
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| 84 |
84: // x = (Fosc / (16*[baud rate]) )-1
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| 85 |
85: TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
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| 86 |
86: RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
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| 87 |
87: }
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| 88 |
88:
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| 89 |
89: void interrupt_init(void)
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| 90 |
90: {
|
| 91 |
91: // Assumes that all interrupts default is 0
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| 92 |
92: PEIE = 1;
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| 93 |
93: GIE = 1;
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| 94 |
94: RCIE = 1; // Recieve interrupt enable.
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| 95 |
95: IPEN = 0; // Nfo interrupt priority
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| 96 |
96: TXIE = 0; // Serial interrupt enabled
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| 97 |
97: TMR1IE = 1; // Enables timer 1
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| 98 |
98: }
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| 99 |
99:
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| 100 |
100: void timer_init(void)
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| 101 |
101: {
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| 102 |
102: TMR1CS = 1; //use external clock
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| 103 |
103:
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| 104 |
104: T1CKPS1 = 1; //1:8 prescale
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| 105 |
105: T1CKPS0 = 1;
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| 106 |
106:
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| 107 |
107: TMR1H = 0xEF;
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| 108 |
108: TMR1L = 0xFF;
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| 109 |
109:
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| 110 |
110: T1OSCEN = 1; //enable oscillator circuit
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| 111 |
111: RD16 = 0; //normal 8 bit writes
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| 112 |
112: TMR1ON = 1;
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| 113 |
113: }
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| 114 |
114:
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| 115 |
115: void pic18_io_init(void)
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| 116 |
116: {
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| 117 |
117: TRISA0 = 1; // analog input
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| 118 |
118: TRISA1 = 0; // Output
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| 119 |
119: TRISB1 = 1; // TRISB1-4 Digital input
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| 120 |
120: TRISB2 = 1;
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| 121 |
121: TRISB3 = 1;
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| 122 |
122: TRISB4 = 1;
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| 123 |
123: }
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| 124 |
124:
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| 125 |
125: void sms_init(void)
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| 126 |
126: {
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| 127 |
127: int i;
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| 128 |
128:
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| 129 |
129: reset_recieve_buffer();
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| 130 |
130: sprintf(global_serial_send,"at+cgsn\r");
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| 131 |
131: serial_send();
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| 132 |
132: DelaySek(1);
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| 133 |
133: while(!global_recieve_done) ;
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| 134 |
134:
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| 135 |
135:
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| 136 |
136: sprintf(global_serial_send,"%s", "at+cpin=8043\r");
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| 137 |
137: serial_send();
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| 138 |
138:
|
| 139 |
139: while(global_modem_init == 0)
|
| 140 |
140: {
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| 141 |
141: on_initial_recieve();
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| 142 |
142: }
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| 143 |
143: }
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| 144 |
144:
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| 145 |
145:
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| 146 |
146: void interrupt interrupt_handler(void)
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| 147 |
147: {
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| 148 |
148: // Finds out what interrupt have been trigged, and starts the respective function.
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| 149 |
149: if(RCIF == 1) // Serial recieve interrupt
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| 150 |
150: {
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| 151 |
151: serial_recieved();
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| 152 |
152: RCIF = 0;
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| 153 |
153: }
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| 154 |
154:
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| 155 |
155: if(TMR1IF == 1) // timer1 interrupt trigger.
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| 156 |
156: {
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| 157 |
157: timer1_interrupt();
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| 158 |
158: TMR1IF = 0;
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| 159 |
159: }
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| 160 |
160: }
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| 161 |
161:
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| 162 |
162:
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| 163 |
163: void serial_send(void)
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| 164 |
164: {
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| 165 |
165: int i;
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| 166 |
166: char data_byte;
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| 167 |
167: for(i = 0; i < BUFFER; i++)
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| 168 |
168: {
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| 169 |
169: data_byte = global_serial_send[i];
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| 170 |
170: if( data_byte == '\r')
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| 171 |
171: i = (BUFFER - 1);
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| 172 |
172: TXREG = data_byte;
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| 173 |
173: while(TRMT==0) ;
|
| 174 |
174: DelayMs(10);
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| 175 |
175: }
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| 176 |
176: DelayMs(250);
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| 177 |
177: DelayMs(250);
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| 178 |
178: }
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| 179 |
179:
|
| 180 |
180: void serial_recieved(void)
|
| 181 |
181: {
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| 182 |
182: char data_byte, saved_data[LCD_LENGTH];
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| 183 |
183:
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| 184 |
184: data_byte = RCREG;
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| 185 |
185:
|
| 186 |
186: if (data_byte == '\n')
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| 187 |
187: return;
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| 188 |
188:
|
| 189 |
189: global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
|
| 190 |
190:
|
| 191 |
191: if (data_byte == '\r')
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| 192 |
192: {
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| 193 |
193: global_recieve_done = 1;
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| 194 |
194: //global_serial_byte_counter = 0;
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| 195 |
195: global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
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| 196 |
196: }
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| 197 |
197: else
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| 198 |
198: {
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| 199 |
199: global_serial_byte_counter++;
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| 200 |
200: }
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| 201 |
201:
|
| 202 |
202: }
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| 203 |
203:
|
| 204 |
204: void timer1_interrupt(void)
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| 205 |
205: {
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| 206 |
206: TMR1H = 0xEF;
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| 207 |
207: TMR1L = 0xFF;
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| 208 |
208: global_time_counter++;
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| 209 |
209: global_emergency_counter++;
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| 210 |
210: RA1 = !RA1;
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| 211 |
211: }
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| 212 |
212:
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| 213 |
213: void update_lcd(void)
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| 214 |
214: {
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| 215 |
215: lcd_clear();
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| 216 |
216: lcd_goto(0x00);
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| 217 |
217: lcd_puts(global_temp);
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| 218 |
218:
|
| 219 |
219: }
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| 220 |
220:
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| 221 |
221: void send_update(void)
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| 222 |
222: {
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| 223 |
223: sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
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| 224 |
224: serial_send();
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| 225 |
225: sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
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| 226 |
226: lcd_goto(40);
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| 227 |
227: lcd_puts(global_serial_send);
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| 228 |
228: serial_send();
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| 229 |
229: DelayMs(250);
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| 230 |
230: global_sms_counter++;
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| 231 |
231: }
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| 232 |
232:
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| 233 |
233: void convertTemp()
|
| 234 |
234: {
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| 235 |
235: short adVal;
|
| 236 |
236: adVal = (global_Pot_Hi << 8) | global_Pot_Lo;
|
| 237 |
237: if( adVal >=840 )
|
| 238 |
238: global_temp = 100;
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| 239 |
239: else
|
| 240 |
240: global_temp = (adVal / 8.3886);
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| 241 |
241: }
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| 242 |
242:
|
| 243 |
243:
|
| 244 |
244:
|
| 245 |
245: void eeprom_writer(void)
|
| 246 |
246: {
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| 247 |
247: char len,i;
|
| 248 |
248:
|
| 249 |
249: len = strlen(cell_nr);
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| 250 |
250: eeprom_write(0, (global_time_interval/60));
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| 251 |
251: eeprom_write(1, global_sms_counter>>8);
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| 252 |
252: eeprom_write(2, global_sms_counter);
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| 253 |
253: eeprom_write(3, len);
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| 254 |
254:
|
| 255 |
255: for (i=0; i<len; ++i)
|
| 256 |
256: {
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| 257 |
257: eeprom_write(i+4, cell_nr[i] );
|
| 258 |
258: }
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| 259 |
259: }
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| 260 |
260:
|
| 261 |
261: void eeprom_reader(void)
|
| 262 |
262: {
|
| 263 |
263: char len,i;
|
| 264 |
264:
|
| 265 |
265: global_time_interval = eeprom_read(0);
|
| 266 |
266: global_time_interval *= 60;
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| 267 |
267: global_sms_counter = (eeprom_read(1)<<8) | eeprom_read(2);
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| 268 |
268: len = eeprom_read(3);
|
| 269 |
269:
|
| 270 |
270: for (i=0; i<len; ++i)
|
| 271 |
271: {
|
| 272 |
272: cell_nr[i] = eeprom_read(i+4);
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| 273 |
273: }
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| 274 |
274:
|
| 275 |
275: cell_nr[i] = 0; //zero terminated!
|
| 276 |
276: }
|
| 277 |
277:
|
| 278 |
278: void on_initial_recieve(void)
|
| 279 |
279: {
|
| 280 |
280: char imei[16];
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| 281 |
281: char* ptr;
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| 282 |
282: char i;
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| 283 |
283:
|
| 284 |
284: if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
|
| 285 |
285: {
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| 286 |
286: global_modem_init = 1;
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| 287 |
287:
|
| 288 |
288: ptr = strstr(global_serial_recieve_buffer,"cgsn");
|
| 289 |
289: ptr +=4;
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| 290 |
290: strncpy(imei, ptr,15);
|
| 291 |
291: imei[15] = 0;
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| 292 |
292:
|
| 293 |
293: global_imei_tversum = 0;
|
| 294 |
294: for (i=0; i<15; ++i)
|
| 295 |
295: {
|
| 296 |
296: global_imei_tversum += (imei[i] - '0');
|
| 297 |
297: }
|
| 298 |
298:
|
| 299 |
299:
|
| 300 |
300: reset_recieve_buffer();
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| 301 |
301: }
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| 302 |
302:
|
| 303 |
303:
|
| 304 |
304: }
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| 305 |
305:
|
| 306 |
306:
|
| 307 |
307: void on_recieve(void)
|
| 308 |
308: {
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| 309 |
309: char tmp[17];
|
| 310 |
310: if (global_recieve_done == 0)
|
| 311 |
311: return;
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| 312 |
312:
|
| 313 |
313: lcd_clear();
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| 314 |
314: lcd_goto(0x00);
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| 315 |
315: tmp[0] = 0;
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| 316 |
316: strncat(tmp,global_serial_recieve_buffer,16);
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| 317 |
317: lcd_puts(tmp);
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| 318 |
318: if (strncmp(global_serial_recieve_buffer,"+WIND: 11", 3) == 0)
|
| 319 |
319: {
|
| 320 |
320: global_modem_init = 1;
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| 321 |
321: }
|
| 322 |
322:
|
| 323 |
323: reset_recieve_buffer();
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| 324 |
324: }
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| 325 |
325:
|
| 326 |
326: void main()
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| 327 |
327: {
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| 328 |
328: ////////////////////
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| 329 |
329: // Running Init's //
|
| 330 |
330:
|
| 331 |
331: // Running init for various components.
|
| 332 |
332: pic18_io_init();
|
| 333 |
333: rs232_init();
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| 334 |
334: ad_init();
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| 335 |
335: lcd_init(0);
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| 336 |
336: interrupt_init();
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| 337 |
337: sms_init();
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| 338 |
338: //eeprom_init();
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| 339 |
339: timer_init();
|
| 340 |
340: eeprom_reader();
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| 341 |
341: ///////////////
|
| 342 |
342: // Main loop //
|
| 343 |
343:
|
| 344 |
344:
|
| 345 |
345: while(1)
|
| 346 |
346: {
|
| 347 |
347: // If there happends to be a critical state on the system, we send a sms.
|
| 348 |
348: if( (global_temp >= 90 || PWRFAIL == 1 || FIREDET == 0 || FEEDING == 1 || EMPTYTANK == 1) && global_emergency_counter >= 600 )
|
| 349 |
349: {
|
| 350 |
350: send_update();
|
| 351 |
351: global_emergency_counter = 0;
|
| 352 |
352: }
|
| 353 |
353: // Every X sec. a status sms is send.
|
| 354 |
354: if(global_time_counter >= 3600)
|
| 355 |
355: {
|
| 356 |
356: send_update();
|
| 357 |
357: global_time_counter = 0;
|
| 358 |
358: }
|
| 359 |
359: // To avoid buffer overrun.
|
| 360 |
360: if( global_emergency_counter > 7200 )
|
| 361 |
361: global_emergency_counter = 600;
|
| 362 |
362:
|
| 363 |
363: // Checks if there has been recieved a config sms.
|
| 364 |
364: if(global_interval_changed )
|
| 365 |
365: {
|
| 366 |
366: eeprom_writer();
|
| 367 |
367: global_interval_changed = 0;
|
| 368 |
368: }
|
| 369 |
369: // Checking if A/D convertion is done, and save the data in global_Pot_??
|
| 370 |
370: if(GODONE==0)
|
| 371 |
371: {
|
| 372 |
372: global_Pot_Hi = ADRESH;
|
| 373 |
373: global_Pot_Lo = ADRESL;
|
| 374 |
374: convertTemp();
|
| 375 |
375: update_lcd();
|
| 376 |
376: GODONE = 1;
|
| 377 |
377: }
|
| 378 |
378:
|
| 379 |
379: //if (global_recieve_done)
|
| 380 |
380: //{
|
| 381 |
381: on_recieve();
|
| 382 |
382: // global_recieve_done = 0;
|
| 383 |
383: // global_serial_byte_counter = 0;
|
| 384 |
384: //}
|
| 385 |
385: }
|
| 386 |
386: }
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