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