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	hedin	82	#include <pic18.h>
2			#include <stdio.h>
3	hedin	148	#include <htc.h>
4	hedin	82	#include <string.h>
5	hedin	160	#include <stdlib.h>
6	hedin	148
7	hedin	82	#include "lcd.h"
8	hedin	137	#include "Delay.h"
9	hedin	109	// Delay.h is included inside lcd.c
10	hedin	82
11	hedin	109	#define LCD_LENGTH 16
12			#define LCD_ROWS 2
13	hedin	150	#define BUFFER 128
14	hedin	148	#define PWRFAIL RB1
15			#define FIREDET RB2
16			#define FEEDING RB3
17			#define EMPTYTANK RB4
18	hedin	109
19
20	hedin	137	unsigned char global_Pot_Hi, global_Pot_Lo;
21	hedin	150	unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[BUFFER];
22	hedin	148	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	hedin	163	unsigned char global_temp_old = 0;
27	hedin	137
28	hedin	160	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	hedin	155
33	hedin	151	unsigned char global_lcd_buf[16];
34
35	hedin	150	unsigned short global_imei_tversum;
36
37	hedin	160	unsigned char global_cell_nr[15] = ""; // = "21681784";
38	hedin	150	bit global_modem_init = 0;
39	hedin	160	bit global_has_imei = 0;
40	hedin	148
41	hedin	155	unsigned char global_sms_recieve_number[3];
42
43	hedin	148	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
44			__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
45
46	hedin	137	void serial_recieved(void);
47	hedin	139	void serial_send(void);
48			void update_lcd(void);
49	hedin	148	void convertTemp(void);
50			void timer1_interrupt(void);
51	hedin	150	void on_recieve(void);
52			void on_initial_recieve(void);
53	hedin	155	void sms_recieved(void);
54	hedin	163	void send_sms(const unsigned char* payload);
55	hedin	137
56	hedin	150
57			void reset_recieve_buffer(void)
58	hedin	109	{
59	hedin	155	global_recieve_done = 0;
60
61	hedin	160	global_message_buffer_length1 = 0;
62			//global_message_buffer1[0] = 0;
63			global_message_buffer_length2 = 0;
64			//global_message_buffer2[0] = 0;
65	hedin	155
66	hedin	160	memset(global_message_buffer1, 0, BUFFER);
67			memset(global_message_buffer2, 0, BUFFER);
68	hedin	150	}
69
70	hedin	160	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	hedin	150
80	hedin	160
81
82	hedin	150	void ad_init(void) // Nicked from H7
83			{
84	hedin	109	// AD Conversion clock
85			ADCS0 = 0;
86			ADCS1 = 0;
87			ADCS2 = 0;
88	hedin	82
89	hedin	109	//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	hedin	148	//Result is right justified
102			ADFM=1;
103	hedin	109
104			//Fire up for A/D converter module
105			ADON=1;
106			}
107
108	hedin	82	void rs232_init(void)
109			{
110			SPEN = 0; // Serial Port Enable Bit... 0 = disabled
111	hedin	137	TRISC6 = 0;
112	hedin	82	TRISC7 = 1;
113	hedin	137
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	hedin	82	}
119
120			void interrupt_init(void)
121			{
122			// Assumes that all interrupts default is 0
123			PEIE = 1;
124			GIE = 1;
125	hedin	137	RCIE = 1; // Recieve interrupt enable.
126			IPEN = 0; // Nfo interrupt priority
127			TXIE = 0; // Serial interrupt enabled
128	hedin	148	TMR1IE = 1; // Enables timer 1
129	hedin	82	}
130
131	hedin	148	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	hedin	82	}
145
146	hedin	137	void sms_init(void)
147	hedin	82	{
148	hedin	148	int i;
149	hedin	160	char buf[2];
150	hedin	148
151	hedin	160
152	hedin	150	reset_recieve_buffer();
153	hedin	148	sprintf(global_serial_send,"at+cgsn\r");
154			serial_send();
155			DelaySek(1);
156	hedin	160	//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	hedin	148
175
176	hedin	139	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
177			serial_send();
178
179	hedin	150	while(global_modem_init == 0)
180			{
181			on_initial_recieve();
182			}
183	hedin	160	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	hedin	82	}
190
191	hedin	148
192	hedin	82	void interrupt interrupt_handler(void)
193			{
194	hedin	109	// Finds out what interrupt have been trigged, and starts the respective function.
195	hedin	137	if(RCIF == 1) // Serial recieve interrupt
196	hedin	82	{
197	hedin	137	serial_recieved();
198	hedin	82	RCIF = 0;
199			}
200	hedin	148
201			if(TMR1IF == 1) // timer1 interrupt trigger.
202			{
203			timer1_interrupt();
204			TMR1IF = 0;
205			}
206	hedin	82	}
207	hedin	109
208	hedin	137
209			void serial_send(void)
210			{
211			int i;
212	hedin	148	char data_byte;
213	hedin	150	for(i = 0; i < BUFFER; i++)
214	hedin	109	{
215	hedin	148	data_byte = global_serial_send[i];
216			if( data_byte == '\r')
217	hedin	150	i = (BUFFER - 1);
218	hedin	148	TXREG = data_byte;
219	hedin	139	while(TRMT==0) ;
220	hedin	148	DelayMs(10);
221	hedin	109	}
222	hedin	163	DelayMs(150);
223	hedin	160	global_serial_send[0] = 0;
224	hedin	163	DelayMs(150);
225	hedin	137	}
226
227	hedin	160	///////////////////////////////////////////////////////////////////////////////////////////////////
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	hedin	137	{
232	hedin	162	char data_byte;
233	hedin	137
234	hedin	148	data_byte = RCREG;
235	hedin	137
236	hedin	160	if (data_byte == '\n') // Cant be bothered to do anyting if the byte is a '\n'.
237	hedin	150	return;
238	hedin	151
239	hedin	160	if (global_serial_byte_counter == 0 && data_byte == '\r') // don't care about '\r', if it's the first byte we recieve.
240	hedin	151	return;
241	hedin	150
242	hedin	160
243	hedin	162	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	hedin	160
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	hedin	137	{
253	hedin	160	global_recieve_done = 1; // indicates the recieve transmission is done.
254	hedin	155	global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate
255
256	hedin	160	// 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	hedin	137	}
267			}
268	hedin	148
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	hedin	139	void update_lcd(void)
279			{
280	hedin	163	//lcd_clear();
281	hedin	148	lcd_goto(0x00);
282	hedin	151
283	hedin	163	sprintf(global_lcd_buf, "Temp: %3d", global_temp);
284	hedin	151	lcd_puts(global_lcd_buf);
285	hedin	148
286			}
287
288			void send_update(void)
289			{
290	hedin	160	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	hedin	163	void send_sms(const unsigned char* payload)
298	hedin	160	{
299			sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr);
300	hedin	148	serial_send();
301	hedin	160	sprintf(global_serial_send, "%s%c", payload, 0x1A);
302	hedin	148	serial_send();
303	hedin	163	DelayMs(150);
304	hedin	160
305	hedin	148	}
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	hedin	160	global_temp = (unsigned char) (adVal / 8.3886);
315	hedin	148	}
316
317
318
319			void eeprom_writer(void)
320			{
321			char len,i;
322
323	hedin	160	len = strlen(global_cell_nr);
324	hedin	148	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	hedin	139	{
331	hedin	160	eeprom_write(i+4, global_cell_nr[i] );
332	hedin	139	}
333			}
334	hedin	148
335			void eeprom_reader(void)
336			{
337			char len,i;
338	hedin	109
339	hedin	148	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	hedin	160	global_cell_nr[i] = eeprom_read(i+4);
347	hedin	148	}
348
349	hedin	160	global_cell_nr[i] = 0; //zero terminated!
350	hedin	148	}
351
352	hedin	150	void on_initial_recieve(void)
353			{
354			char imei[16];
355			char* ptr;
356			char i;
357	hedin	160	char buf[2];
358	hedin	150
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	hedin	148	void on_recieve(void)
373			{
374	hedin	160	char tmp[3];
375	hedin	151	char* ptr;
376			tmp[0]=0;
377
378	hedin	160	if (global_recieve_done == 0 \|\| global_message_buffer_length1 == 0)
379	hedin	150	return;
380	hedin	151
381	hedin	160	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	hedin	151
398	hedin	160	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	hedin	151	{
408	hedin	160	buf[i] = global_message_buffer2[i];
409	hedin	150	}
410	hedin	160
411			buf[i] = 0;
412			imei = atoi(buf);
413
414			if (imei == global_imei_tversum)
415	hedin	155	{
416	hedin	160	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	hedin	155	}
437	hedin	148
438
439	hedin	155	}
440
441	hedin	160
442
443	hedin	82	void main()
444			{
445	hedin	148	////////////////////
446			// Running Init's //
447	hedin	109
448			// Running init for various components.
449	hedin	148	pic18_io_init();
450	hedin	160	RA5 = 1; // Indicates that the board is running inits.
451
452	hedin	148	rs232_init();
453	hedin	109	ad_init();
454			lcd_init(0);
455	hedin	137	interrupt_init();
456	hedin	139	sms_init();
457	hedin	148	//eeprom_init();
458			timer_init();
459			eeprom_reader();
460			///////////////
461			// Main loop //
462	hedin	150
463	hedin	151	DelayMs(50);
464			reset_recieve_buffer();
465	hedin	150
466	hedin	160	RA5 = 0; // Inits are done, and RA1 will now work as a error notifier.
467
468	hedin	109	while(1)
469	hedin	100	{
470	hedin	148	// 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	hedin	109	// 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	hedin	148	convertTemp();
498	hedin	163	if (global_temp != global_temp_old)
499			{
500	hedin	162	update_lcd();
501	hedin	163	global_temp_old = global_temp;
502			}
503	hedin	112	GODONE = 1;
504	hedin	109	}
505	hedin	151	// Handels the recieve sms'es.
506			on_recieve();
507	hedin	100	}
508	hedin	82	}