trunk/Embedded/main.c

#include <pic18.h>
#include <stdio.h>
#include <htc.h>
#include <string.h>
#include <stdlib.h>

#include "lcd.h"
#include "Delay.h"
// Delay.h is included inside lcd.c

#define LCD_LENGTH 16
#define LCD_ROWS 2
#define BUFFER 128
#define PWRFAIL RB1
#define FIREDET RB2
#define FEEDING RB3
#define EMPTYTANK RB4


unsigned char global_Pot_Hi, global_Pot_Lo;
unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[BUFFER];
bit global_recieve_done = 0, global_interval_changed = 0;
unsigned int global_serial_byte_counter = 0, global_sms_counter = 1, global_time_counter = 0;
unsigned int global_emergency_counter = 600, global_time_interval = 3600;
unsigned char global_temp = 0;
unsigned char global_temp_old = 0;

unsigned char global_message_buffer1[BUFFER];
unsigned char global_message_buffer2[BUFFER];
unsigned char global_message_buffer_length1;
unsigned char global_message_buffer_length2;

unsigned char global_lcd_buf[16];

unsigned short global_imei_tversum;

unsigned char global_cell_nr[15] = ""; // = "21681784";
bit global_modem_init = 0;
bit global_has_imei = 0;

unsigned char global_sms_recieve_number[3];

__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);

void serial_recieved(void);
void serial_send(void);
void update_lcd(void);
void convertTemp(void);
void timer1_interrupt(void);
void on_recieve(void);
void on_initial_recieve(void);
void sms_recieved(void);
void send_sms(const unsigned char* payload);


void reset_recieve_buffer(void)
{
        global_recieve_done = 0;
        
        global_message_buffer_length1 = 0;
        //global_message_buffer1[0] = 0;        
        global_message_buffer_length2 = 0;
        //global_message_buffer2[0] = 0;        
        
        memset(global_message_buffer1, 0, BUFFER);
        memset(global_message_buffer2, 0, BUFFER);
}       

void pic18_io_init(void)
{
        TRISA0  = 1;    // analog input
        TRISA5  = 0;    // Output
        TRISB1  = 1;    // TRISB1-4 Digital input
        TRISB2  = 1;
        TRISB3  = 1;
        TRISB4  = 1;
}


void ad_init(void) // Nicked from H7
{
        // AD Conversion clock
        ADCS0 = 0;
        ADCS1 = 0;
        ADCS2 = 0;

        //Select AN0/RA0 for AD source
                // In this (000) setup, it's only RA0/AN0 that does ad convertion.
        CHS0=0;
        CHS1=0;
        CHS2=0;
        
        //Only AN0 is selected for AD and with Vdd/Vss as limits
        PCFG0=0;
        PCFG1=1;
        PCFG2=1;
        PCFG3=1;
        
        //Result is right justified
        ADFM=1; 
        
        //Fire up for A/D converter module
        ADON=1;
}

void rs232_init(void)
{
        SPEN    = 0;    // Serial Port Enable Bit... 0 = disabled
        TRISC6  = 0;    
        TRISC7  = 1;

        SPBRG   = 207;  // 1200 baud rate... 25 = 9600
                                        // x = (Fosc / (16*[baud rate]) )-1
        TXSTA   = 0x24; // Enables BRGH and TXEN inthe TXSTA register
        RCSTA   = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
}

void interrupt_init(void)
{
        // Assumes that all interrupts default is 0
        PEIE    = 1;
        GIE             = 1;
        RCIE    = 1;    // Recieve interrupt enable.
        IPEN    = 0;    // Nfo interrupt priority
        TXIE    = 0;    // Serial interrupt enabled
        TMR1IE  = 1;    // Enables timer 1
}       

void timer_init(void)
{
        TMR1CS = 1; //use external clock
        
        T1CKPS1 = 1; //1:8 prescale
        T1CKPS0 = 1;
        
        TMR1H = 0xEF;
        TMR1L = 0xFF;

        T1OSCEN = 1; //enable oscillator circuit        
        RD16 = 0; //normal 8 bit writes
        TMR1ON = 1;
}       

void sms_init(void)
{
        int i;
        char buf[2];


        reset_recieve_buffer();
        sprintf(global_serial_send,"at+cgsn\r");
        serial_send();
        DelaySek(1);
        //while(!global_recieve_done) ;
        
        while (global_has_imei == 0)
        {
                if (strstr(global_message_buffer1,"OK") != 0)
                {
                        global_imei_tversum = 0;
                        for (i=0; i<15; ++i)
                        {
                                buf[0] = global_message_buffer2[i];
                                buf[1] = 0;
                                global_imei_tversum += atoi(buf);
                                //global_imei_tversum += (global_message_buffer2[i] - '0');
                        }
                        
                        global_has_imei = 1;
                }
        }


        sprintf(global_serial_send,"%s", "at+cpin=8043\r");
        serial_send();
        
        while(global_modem_init == 0)
        {
                on_initial_recieve();
        }
        DelayMs(5);
        
        reset_recieve_buffer();
        sprintf(global_serial_send, "at+cmgd=1,4\r");
        serial_send();
        while ( strstr(global_message_buffer1,"OK") == 0) ;
}


void interrupt interrupt_handler(void)
{
        // Finds out what interrupt have been trigged, and starts the respective function.
        if(RCIF == 1)                   // Serial recieve interrupt
        {
                serial_recieved();
                RCIF = 0;
        }
        
        if(TMR1IF == 1)                 // timer1 interrupt trigger.
        {
                timer1_interrupt();
                TMR1IF = 0;
        }
}               


void serial_send(void)
{
        int i;
        char data_byte;
        for(i = 0; i < BUFFER; i++)
        {
                data_byte = global_serial_send[i];
                if( data_byte == '\r')
                        i = (BUFFER - 1);
                TXREG = data_byte;
                while(TRMT==0) ;
                DelayMs(10);
        }
        DelayMs(150);
        global_serial_send[0] = 0;
        DelayMs(150);
}       

///////////////////////////////////////////////////////////////////////////////////////////////////
// Takes the recieving data and fills it in a buffer, when we meet a '\r' we fill the data from,
// global_serial_recieve_buffer, to global_message_buffer1, and sets the flag global_recieve_done.
void serial_recieved(void) 
{
        char data_byte;
        
        data_byte = RCREG;
        
        if (data_byte == '\n')          // Cant be bothered to do anyting if the byte is a '\n'.
                return;
                
        if (global_serial_byte_counter == 0 && data_byte == '\r')       // don't care about '\r', if it's the first byte we recieve.
                return;


        if ( global_serial_byte_counter < BUFFER) //Prevent buffer overrun
                global_serial_recieve_buffer[ global_serial_byte_counter++ ] = data_byte;       // fills the data_byte into our buffer.

        
        if (data_byte == '\r')  // when we meet a '\r', the transmission is done, and we fill the constxt of 
                                                        // global_message_buffer1 into global_message_buffer2 our main buffer into
                                                        // global_message_buffer2, and the same with our recieve buffer, global_serial_recieve_buffer
                                                        // into global_message_buffer1.
        {
                global_recieve_done = 1; // indicates the recieve transmission is done.
                global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate
                
                // global_message_buffer1 -> global_message_buffer2
                strcpy(global_message_buffer2, global_message_buffer1);
                global_message_buffer_length2 = global_message_buffer_length1;
                
                // global_serial_recieve_buffer -> global_message_buffer1
                strcpy(global_message_buffer1, global_serial_recieve_buffer);
                global_message_buffer_length1 = global_serial_byte_counter;
                
                
                global_serial_byte_counter = 0;
        }       
}

void timer1_interrupt(void)
{
        TMR1H = 0xEF;
        TMR1L = 0xFF;
        global_time_counter++;
        global_emergency_counter++;
        RA1 = !RA1;
}

void update_lcd(void)
{
        //lcd_clear();
        lcd_goto(0x00);
        
        sprintf(global_lcd_buf, "Temp: %3d", global_temp);
        lcd_puts(global_lcd_buf);

}
        
void send_update(void)
{
        char update[40];
        sprintf(update, "%d:%d:%d:%d:%d:%d", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL);
        send_sms(update);

        global_sms_counter++;
}       

void send_sms(const unsigned char* payload)
{
        sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr);
        serial_send();
        sprintf(global_serial_send, "%s%c", payload, 0x1A);
        serial_send();
        DelayMs(150);
        
}       

void convertTemp()
{
        short adVal;
        adVal = (global_Pot_Hi << 8) | global_Pot_Lo;
        if( adVal >=840 )
                global_temp = 100;
        else
                global_temp = (unsigned char) (adVal / 8.3886);
}


void eeprom_writer(void)
{
        char len,i;
        
        len = strlen(global_cell_nr);
        eeprom_write(0, (global_time_interval/60));
        eeprom_write(1, global_sms_counter>>8);
        eeprom_write(2, global_sms_counter);
        eeprom_write(3, len);
        
        for (i=0; i<len; ++i)
        {
                eeprom_write(i+4, global_cell_nr[i] );
        }
}

void eeprom_reader(void)
{
        char len,i;
        
        global_time_interval = eeprom_read(0);
        global_time_interval *= 60;
        global_sms_counter = (eeprom_read(1)<<8) | eeprom_read(2);
        len = eeprom_read(3);
        
        for (i=0; i<len; ++i)
        {
                global_cell_nr[i] = eeprom_read(i+4);
        }
        
        global_cell_nr[i] = 0; //zero terminated!
}       

void on_initial_recieve(void)
{
        char imei[16];
        char* ptr;
        char i;
        char buf[2];
        
        if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
        {
                global_modem_init = 1;

                ptr = strstr(global_serial_recieve_buffer,"cgsn");
                ptr +=4;
                strncpy(imei, ptr,15);
                imei[15] = 0;
                
                reset_recieve_buffer();
        }
}

void on_recieve(void)
{
        char tmp[3];
        char* ptr;
        tmp[0]=0;
                
        if (global_recieve_done == 0 || global_message_buffer_length1 == 0)
                return;

        if (strstr(global_message_buffer1,"CMTI") != 0) // here we handles a incomming SMS
        {
                ptr = strstr(global_message_buffer1,",");       // finds the point just before the nr. of the SMS.
                strcat(tmp,ptr+1);                                                      // puts that number in tmp
                global_sms_recieve_number[0] = 0;                       // wanna be sure that we write the new number from global_sms_recieve_number[0]
                strcat(global_sms_recieve_number, tmp);         // puts the sms number into the global variable.
                sms_recieved();
        }       
        reset_recieve_buffer();
}

void sms_recieved(void)
{
        char buf[4];
        char i,imei;
        char pos;
        
        sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number); // formates the variable that sends commands to the SMS modem.
        serial_send();          // Sends the command.
        
        while(strstr(global_message_buffer1, "OK")  == 0)       // stays here until we recieve a "OK" from the modem.
                DelayMs(1);

        DelayUs(10);
        
        for (i=0; global_message_buffer2[i] != ':' && global_message_buffer2[i] != 0; ++i)
        {
                buf[i] = global_message_buffer2[i];
        }
        
        buf[i] = 0;
        imei = atoi(buf);
        
        if (imei == global_imei_tversum)
        {
                i++; //spring over ':'
                pos = 0;
                for ( ; global_message_buffer2[i] != ':'; ++i, ++pos)
                {
                        global_cell_nr[pos] = global_message_buffer2[i];
                }
                global_cell_nr[pos] = 0; //zero terminator
                
                i++; //spring over ':'
                pos=0;
                for ( ; global_message_buffer2[i] ; ++i,++pos)
                {
                        buf[pos] = global_message_buffer2[i];
                }
                buf[pos]=0;
                
                global_time_interval = atoi(buf);
                global_time_interval *= 60;
                eeprom_writer();                        // writes the new cell nr. and time interval to the eeprom.
                send_sms("conf ok");
        }
        

}


void main()
{
////////////////////
// Running Init's //

        // Running init for various components.
        pic18_io_init();
        RA5 = 1;                        // Indicates that the board is running inits.
        
        rs232_init();
        ad_init();
        lcd_init(0);
        interrupt_init();
        sms_init();
        //eeprom_init();
        timer_init();
        eeprom_reader();
///////////////
// Main loop //

        DelayMs(50);
        reset_recieve_buffer();

        RA5 = 0;                        // Inits are done, and RA1 will now work as a error notifier.

        while(1)
        {
        // If there happends to be a critical state on the system, we send a sms.
                if( (global_temp >= 90 || PWRFAIL == 1 || FIREDET == 0 || FEEDING == 1 || EMPTYTANK == 1) && global_emergency_counter >= 600 )
                {
                        send_update();
                        global_emergency_counter = 0;
                }
        // Every X sec. a status sms is send.
                if(global_time_counter >= 3600)
                {
                        send_update();
                        global_time_counter = 0;
                }
        // To avoid buffer overrun.
                if( global_emergency_counter > 7200 )
                        global_emergency_counter = 600;

        // Checks if there has been recieved a config sms.
                if(global_interval_changed )
                {
                        eeprom_writer();
                        global_interval_changed = 0;
                }
        // Checking if A/D convertion is done, and save the data in global_Pot_??
                if(GODONE==0)
                {
                        global_Pot_Hi = ADRESH;
                        global_Pot_Lo = ADRESL;
                        convertTemp();
                        if (global_temp != global_temp_old)
                        {
                                update_lcd();
                                global_temp_old = global_temp;
                        }
                        GODONE = 1;
                }
        // Handels the recieve sms'es.
                on_recieve();
        }
}
1	#include <pic18.h>
2	#include <stdio.h>
3	#include <htc.h>
4	#include <string.h>
5	#include <stdlib.h>
6
7	#include "lcd.h"
8	#include "Delay.h"
9	// Delay.h is included inside lcd.c
10
11	#define LCD_LENGTH 16
12	#define LCD_ROWS 2
13	#define BUFFER 128
14	#define PWRFAIL RB1
15	#define FIREDET RB2
16	#define FEEDING RB3
17	#define EMPTYTANK RB4
18
19
20	unsigned char global_Pot_Hi, global_Pot_Lo;
21	unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[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	unsigned char global_temp_old = 0;
27
28	unsigned char global_message_buffer1[BUFFER];
29	unsigned char global_message_buffer2[BUFFER];
30	unsigned char global_message_buffer_length1;
31	unsigned char global_message_buffer_length2;
32
33	unsigned char global_lcd_buf[16];
34
35	unsigned short global_imei_tversum;
36
37	unsigned char global_cell_nr[15] = ""; // = "21681784";
38	bit global_modem_init = 0;
39	bit global_has_imei = 0;
40
41	unsigned char global_sms_recieve_number[3];
42
43	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
44	__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
45
46	void serial_recieved(void);
47	void serial_send(void);
48	void update_lcd(void);
49	void convertTemp(void);
50	void timer1_interrupt(void);
51	void on_recieve(void);
52	void on_initial_recieve(void);
53	void sms_recieved(void);
54	void send_sms(const unsigned char* payload);
55
56
57	void reset_recieve_buffer(void)
58	{
59	global_recieve_done = 0;
60
61	global_message_buffer_length1 = 0;
62	//global_message_buffer1[0] = 0;
63	global_message_buffer_length2 = 0;
64	//global_message_buffer2[0] = 0;
65
66	memset(global_message_buffer1, 0, BUFFER);
67	memset(global_message_buffer2, 0, BUFFER);
68	}
69
70	void pic18_io_init(void)
71	{
72	TRISA0 = 1; // analog input
73	TRISA5 = 0; // Output
74	TRISB1 = 1; // TRISB1-4 Digital input
75	TRISB2 = 1;
76	TRISB3 = 1;
77	TRISB4 = 1;
78	}
79
80
81
82	void ad_init(void) // Nicked from H7
83	{
84	// AD Conversion clock
85	ADCS0 = 0;
86	ADCS1 = 0;
87	ADCS2 = 0;
88
89	//Select AN0/RA0 for AD source
90	// In this (000) setup, it's only RA0/AN0 that does ad convertion.
91	CHS0=0;
92	CHS1=0;
93	CHS2=0;
94
95	//Only AN0 is selected for AD and with Vdd/Vss as limits
96	PCFG0=0;
97	PCFG1=1;
98	PCFG2=1;
99	PCFG3=1;
100
101	//Result is right justified
102	ADFM=1;
103
104	//Fire up for A/D converter module
105	ADON=1;
106	}
107
108	void rs232_init(void)
109	{
110	SPEN = 0; // Serial Port Enable Bit... 0 = disabled
111	TRISC6 = 0;
112	TRISC7 = 1;
113
114	SPBRG = 207; // 1200 baud rate... 25 = 9600
115	// x = (Fosc / (16*[baud rate]) )-1
116	TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
117	RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
118	}
119
120	void interrupt_init(void)
121	{
122	// Assumes that all interrupts default is 0
123	PEIE = 1;
124	GIE = 1;
125	RCIE = 1; // Recieve interrupt enable.
126	IPEN = 0; // Nfo interrupt priority
127	TXIE = 0; // Serial interrupt enabled
128	TMR1IE = 1; // Enables timer 1
129	}
130
131	void timer_init(void)
132	{
133	TMR1CS = 1; //use external clock
134
135	T1CKPS1 = 1; //1:8 prescale
136	T1CKPS0 = 1;
137
138	TMR1H = 0xEF;
139	TMR1L = 0xFF;
140
141	T1OSCEN = 1; //enable oscillator circuit
142	RD16 = 0; //normal 8 bit writes
143	TMR1ON = 1;
144	}
145
146	void sms_init(void)
147	{
148	int i;
149	char buf[2];
150
151
152	reset_recieve_buffer();
153	sprintf(global_serial_send,"at+cgsn\r");
154	serial_send();
155	DelaySek(1);
156	//while(!global_recieve_done) ;
157
158	while (global_has_imei == 0)
159	{
160	if (strstr(global_message_buffer1,"OK") != 0)
161	{
162	global_imei_tversum = 0;
163	for (i=0; i<15; ++i)
164	{
165	buf[0] = global_message_buffer2[i];
166	buf[1] = 0;
167	global_imei_tversum += atoi(buf);
168	//global_imei_tversum += (global_message_buffer2[i] - '0');
169	}
170
171	global_has_imei = 1;
172	}
173	}
174
175
176	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
177	serial_send();
178
179	while(global_modem_init == 0)
180	{
181	on_initial_recieve();
182	}
183	DelayMs(5);
184
185	reset_recieve_buffer();
186	sprintf(global_serial_send, "at+cmgd=1,4\r");
187	serial_send();
188	while ( strstr(global_message_buffer1,"OK") == 0) ;
189	}
190
191
192	void interrupt interrupt_handler(void)
193	{
194	// Finds out what interrupt have been trigged, and starts the respective function.
195	if(RCIF == 1) // Serial recieve interrupt
196	{
197	serial_recieved();
198	RCIF = 0;
199	}
200
201	if(TMR1IF == 1) // timer1 interrupt trigger.
202	{
203	timer1_interrupt();
204	TMR1IF = 0;
205	}
206	}
207
208
209	void serial_send(void)
210	{
211	int i;
212	char data_byte;
213	for(i = 0; i < BUFFER; i++)
214	{
215	data_byte = global_serial_send[i];
216	if( data_byte == '\r')
217	i = (BUFFER - 1);
218	TXREG = data_byte;
219	while(TRMT==0) ;
220	DelayMs(10);
221	}
222	DelayMs(150);
223	global_serial_send[0] = 0;
224	DelayMs(150);
225	}
226
227	///////////////////////////////////////////////////////////////////////////////////////////////////
228	// Takes the recieving data and fills it in a buffer, when we meet a '\r' we fill the data from,
229	// global_serial_recieve_buffer, to global_message_buffer1, and sets the flag global_recieve_done.
230	void serial_recieved(void)
231	{
232	char data_byte;
233
234	data_byte = RCREG;
235
236	if (data_byte == '\n') // Cant be bothered to do anyting if the byte is a '\n'.
237	return;
238
239	if (global_serial_byte_counter == 0 && data_byte == '\r') // don't care about '\r', if it's the first byte we recieve.
240	return;
241
242
243	if ( global_serial_byte_counter < BUFFER) //Prevent buffer overrun
244	global_serial_recieve_buffer[ global_serial_byte_counter++ ] = data_byte; // fills the data_byte into our buffer.
245
246
247
248	if (data_byte == '\r') // when we meet a '\r', the transmission is done, and we fill the constxt of
249	// global_message_buffer1 into global_message_buffer2 our main buffer into
250	// global_message_buffer2, and the same with our recieve buffer, global_serial_recieve_buffer
251	// into global_message_buffer1.
252	{
253	global_recieve_done = 1; // indicates the recieve transmission is done.
254	global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate
255
256	// global_message_buffer1 -> global_message_buffer2
257	strcpy(global_message_buffer2, global_message_buffer1);
258	global_message_buffer_length2 = global_message_buffer_length1;
259
260	// global_serial_recieve_buffer -> global_message_buffer1
261	strcpy(global_message_buffer1, global_serial_recieve_buffer);
262	global_message_buffer_length1 = global_serial_byte_counter;
263
264
265	global_serial_byte_counter = 0;
266	}
267	}
268
269	void timer1_interrupt(void)
270	{
271	TMR1H = 0xEF;
272	TMR1L = 0xFF;
273	global_time_counter++;
274	global_emergency_counter++;
275	RA1 = !RA1;
276	}
277
278	void update_lcd(void)
279	{
280	//lcd_clear();
281	lcd_goto(0x00);
282
283	sprintf(global_lcd_buf, "Temp: %3d", global_temp);
284	lcd_puts(global_lcd_buf);
285
286	}
287
288	void send_update(void)
289	{
290	char update[40];
291	sprintf(update, "%d:%d:%d:%d:%d:%d", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL);
292	send_sms(update);
293
294	global_sms_counter++;
295	}
296
297	void send_sms(const unsigned char* payload)
298	{
299	sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr);
300	serial_send();
301	sprintf(global_serial_send, "%s%c", payload, 0x1A);
302	serial_send();
303	DelayMs(150);
304
305	}
306
307	void convertTemp()
308	{
309	short adVal;
310	adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
311	if( adVal >=840 )
312	global_temp = 100;
313	else
314	global_temp = (unsigned char) (adVal / 8.3886);
315	}
316
317
318
319	void eeprom_writer(void)
320	{
321	char len,i;
322
323	len = strlen(global_cell_nr);
324	eeprom_write(0, (global_time_interval/60));
325	eeprom_write(1, global_sms_counter>>8);
326	eeprom_write(2, global_sms_counter);
327	eeprom_write(3, len);
328
329	for (i=0; i<len; ++i)
330	{
331	eeprom_write(i+4, global_cell_nr[i] );
332	}
333	}
334
335	void eeprom_reader(void)
336	{
337	char len,i;
338
339	global_time_interval = eeprom_read(0);
340	global_time_interval *= 60;
341	global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
342	len = eeprom_read(3);
343
344	for (i=0; i<len; ++i)
345	{
346	global_cell_nr[i] = eeprom_read(i+4);
347	}
348
349	global_cell_nr[i] = 0; //zero terminated!
350	}
351
352	void on_initial_recieve(void)
353	{
354	char imei[16];
355	char* ptr;
356	char i;
357	char buf[2];
358
359	if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
360	{
361	global_modem_init = 1;
362
363	ptr = strstr(global_serial_recieve_buffer,"cgsn");
364	ptr +=4;
365	strncpy(imei, ptr,15);
366	imei[15] = 0;
367
368	reset_recieve_buffer();
369	}
370	}
371
372	void on_recieve(void)
373	{
374	char tmp[3];
375	char* ptr;
376	tmp[0]=0;
377
378	if (global_recieve_done == 0 \|\| global_message_buffer_length1 == 0)
379	return;
380
381	if (strstr(global_message_buffer1,"CMTI") != 0) // here we handles a incomming SMS
382	{
383	ptr = strstr(global_message_buffer1,","); // finds the point just before the nr. of the SMS.
384	strcat(tmp,ptr+1); // puts that number in tmp
385	global_sms_recieve_number[0] = 0; // wanna be sure that we write the new number from global_sms_recieve_number[0]
386	strcat(global_sms_recieve_number, tmp); // puts the sms number into the global variable.
387	sms_recieved();
388	}
389	reset_recieve_buffer();
390	}
391
392	void sms_recieved(void)
393	{
394	char buf[4];
395	char i,imei;
396	char pos;
397
398	sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number); // formates the variable that sends commands to the SMS modem.
399	serial_send(); // Sends the command.
400
401	while(strstr(global_message_buffer1, "OK") == 0) // stays here until we recieve a "OK" from the modem.
402	DelayMs(1);
403
404	DelayUs(10);
405
406	for (i=0; global_message_buffer2[i] != ':' && global_message_buffer2[i] != 0; ++i)
407	{
408	buf[i] = global_message_buffer2[i];
409	}
410
411	buf[i] = 0;
412	imei = atoi(buf);
413
414	if (imei == global_imei_tversum)
415	{
416	i++; //spring over ':'
417	pos = 0;
418	for ( ; global_message_buffer2[i] != ':'; ++i, ++pos)
419	{
420	global_cell_nr[pos] = global_message_buffer2[i];
421	}
422	global_cell_nr[pos] = 0; //zero terminator
423
424	i++; //spring over ':'
425	pos=0;
426	for ( ; global_message_buffer2[i] ; ++i,++pos)
427	{
428	buf[pos] = global_message_buffer2[i];
429	}
430	buf[pos]=0;
431
432	global_time_interval = atoi(buf);
433	global_time_interval *= 60;
434	eeprom_writer(); // writes the new cell nr. and time interval to the eeprom.
435	send_sms("conf ok");
436	}
437
438
439	}
440
441
442
443	void main()
444	{
445	////////////////////
446	// Running Init's //
447
448	// Running init for various components.
449	pic18_io_init();
450	RA5 = 1; // Indicates that the board is running inits.
451
452	rs232_init();
453	ad_init();
454	lcd_init(0);
455	interrupt_init();
456	sms_init();
457	//eeprom_init();
458	timer_init();
459	eeprom_reader();
460	///////////////
461	// Main loop //
462
463	DelayMs(50);
464	reset_recieve_buffer();
465
466	RA5 = 0; // Inits are done, and RA1 will now work as a error notifier.
467
468	while(1)
469	{
470	// If there happends to be a critical state on the system, we send a sms.
471	if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING == 1 \|\| EMPTYTANK == 1) && global_emergency_counter >= 600 )
472	{
473	send_update();
474	global_emergency_counter = 0;
475	}
476	// Every X sec. a status sms is send.
477	if(global_time_counter >= 3600)
478	{
479	send_update();
480	global_time_counter = 0;
481	}
482	// To avoid buffer overrun.
483	if( global_emergency_counter > 7200 )
484	global_emergency_counter = 600;
485
486	// Checks if there has been recieved a config sms.
487	if(global_interval_changed )
488	{
489	eeprom_writer();
490	global_interval_changed = 0;
491	}
492	// Checking if A/D convertion is done, and save the data in global_Pot_??
493	if(GODONE==0)
494	{
495	global_Pot_Hi = ADRESH;
496	global_Pot_Lo = ADRESL;
497	convertTemp();
498	if (global_temp != global_temp_old)
499	{
500	update_lcd();
501	global_temp_old = global_temp;
502	}
503	GODONE = 1;
504	}
505	// Handels the recieve sms'es.
506	on_recieve();
507	}
508	}