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"

#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;
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 int global_temp_update_display = 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 int 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 convert_temp(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 eeprom_writer(void);


void reset_recieve_buffer(void)
{
        global_recieve_done = 0;
        
        global_message_buffer_length1 = 0;
        global_message_buffer_length2 = 0;
        
        memset(global_message_buffer1, 0, BUFFER);
        memset(global_message_buffer2, 0, BUFFER);
}       
//////////  INITS  //////////
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;
        
        //Reset the A/D result registers
        ADRESH = 0;
        ADRESL = 0;
        
        //Result is right justified
        ADFM=1; 
        
        //Fire up for A/D converter module
        ADON=1;
}


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 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 modem_init(void)
{
        int i;
        char buf[2];
        
        while ( strstr(global_message_buffer1,"+WIND: 7") == 0 && global_time_counter < 10 ) ;  // Waiting for the modem to be ready

        reset_recieve_buffer();
        sprintf(global_serial_send,"at+cgsn\r");
        serial_send();
        
        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_has_imei = 1;
                }
        }

        sprintf(global_serial_send,"%s", "at+cpin?\r");
        serial_send();
        DelayMs(100);           // Delay to give the modem a chance to answer.
        
        if (strstr(global_message_buffer1, "+CPIN: SIM PIN") != 0)
        {
                sprintf(global_serial_send,"%s", "at+cpin=8043\r");
                serial_send();
                
                while(global_modem_init == 0)
                {
                        on_initial_recieve();
                }
        }
        reset_recieve_buffer();
        sprintf(global_serial_send, "at+cmgd=1,4\r");
        serial_send();
        while ( strstr(global_message_buffer1,"OK") == 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);
}

void on_initial_recieve(void)
{
        if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
        {
                global_modem_init = 1;
                reset_recieve_buffer();
        }
}

//////////  INTERRUPT HANDLER  //////////
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;
        }
}               

//////////  INTERRUPT TRIGGED //////////
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.
        else
        {
                global_serial_recieve_buffer[0] = 0;
                global_serial_byte_counter = 0;
                return;
        }
        
        
        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;
}
//////////  ORDENARY FUNKTIONS  //////////
void update_lcd(void)
{
        if(global_temp_update_display != global_time_counter)
        {
        //      lcd_clear();
                lcd_goto(0x00);
        
                sprintf(global_lcd_buf, "Temp: %3d", global_temp);
                lcd_puts(global_lcd_buf);
                global_temp_update_display = global_time_counter;
        }

}
        
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);
        if(global_sms_counter % 4 == 0)
        {
                eeprom_writer();
                sprintf(global_serial_send, "at+cmgd=1,3\r");
                serial_send();
                while ( strstr(global_message_buffer1,"OK") == 0) ;
        }
}       

void convert_temp(void)
{
        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_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 Delay(int time)
{
        int wanted = (global_time_counter + time) % global_time_interval;
        
        while (global_time_counter < wanted) ;
}

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);
        lcd_clear();
        lcd_home();
        interrupt_init();
        timer_init();
        modem_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 ) && global_emergency_counter >= 600 )
                {
                        send_update();
                        global_emergency_counter = 0;
                }
                
        // Every X sec. a status sms is send.
                if(global_time_counter >= global_time_interval)
                {
                        send_update();
                        global_time_counter = 0;
                }
        // To avoid buffer overrun.
                if( global_emergency_counter > 7200 )
                        global_emergency_counter = 600;

        // 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;
                        convert_temp();
                        update_lcd();
                        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	82
10	hedin	150	#define BUFFER 128
11	hedin	148	#define PWRFAIL RB1
12			#define FIREDET RB2
13			#define FEEDING RB3
14			#define EMPTYTANK RB4
15	hedin	109
16
17	hedin	137	unsigned char global_Pot_Hi, global_Pot_Lo;
18	hedin	150	unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[BUFFER];
19	hedin	213	bit global_recieve_done = 0;
20			unsigned int global_serial_byte_counter = 0, global_sms_counter = 1, global_time_counter = 0;
21	hedin	148	unsigned int global_emergency_counter = 600, global_time_interval = 3600;
22			unsigned char global_temp = 0;
23	hedin	137
24	hedin	175	unsigned int global_temp_update_display = 0;
25	hedin	165
26	hedin	160	unsigned char global_message_buffer1[BUFFER];
27			unsigned char global_message_buffer2[BUFFER];
28			unsigned char global_message_buffer_length1;
29			unsigned char global_message_buffer_length2;
30	hedin	155
31	hedin	151	unsigned char global_lcd_buf[16];
32
33	hedin	178	unsigned int global_imei_tversum;
34	hedin	150
35	hedin	160	unsigned char global_cell_nr[15] = ""; // = "21681784";
36	hedin	150	bit global_modem_init = 0;
37	hedin	160	bit global_has_imei = 0;
38	hedin	148
39	hedin	155	unsigned char global_sms_recieve_number[3];
40
41	hedin	148	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
42			__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
43
44	hedin	175
45	hedin	137	void serial_recieved(void);
46	hedin	139	void serial_send(void);
47			void update_lcd(void);
48	hedin	205	void convert_temp(void);
49	hedin	148	void timer1_interrupt(void);
50	hedin	150	void on_recieve(void);
51			void on_initial_recieve(void);
52	hedin	155	void sms_recieved(void);
53	hedin	163	void send_sms(const unsigned char* payload);
54	hedin	173	void eeprom_writer(void);
55	hedin	137
56	hedin	175
57	hedin	150	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_buffer_length2 = 0;
63	hedin	155
64	hedin	160	memset(global_message_buffer1, 0, BUFFER);
65			memset(global_message_buffer2, 0, BUFFER);
66	hedin	150	}
67	hedin	175	////////// INITS //////////
68	hedin	160	void pic18_io_init(void)
69			{
70			TRISA0 = 1; // analog input
71			TRISA5 = 0; // Output
72			TRISB1 = 1; // TRISB1-4 Digital input
73			TRISB2 = 1;
74			TRISB3 = 1;
75			TRISB4 = 1;
76			}
77	hedin	150
78	hedin	160
79
80	hedin	150	void ad_init(void) // Nicked from H7
81			{
82	hedin	109	// AD Conversion clock
83			ADCS0 = 0;
84			ADCS1 = 0;
85			ADCS2 = 0;
86	hedin	82
87	hedin	213	//Select AN0/RA0 for AD source.
88			// In this (000) setup, it's only RA0/AN0 that does ad convertion.
89	hedin	109	CHS0=0;
90			CHS1=0;
91			CHS2=0;
92
93			//Only AN0 is selected for AD and with Vdd/Vss as limits
94			PCFG0=0;
95			PCFG1=1;
96			PCFG2=1;
97			PCFG3=1;
98
99	hedin	173	//Reset the A/D result registers
100			ADRESH = 0;
101			ADRESL = 0;
102
103	hedin	148	//Result is right justified
104			ADFM=1;
105	hedin	109
106			//Fire up for A/D converter module
107			ADON=1;
108			}
109
110	hedin	137
111	hedin	82
112			void interrupt_init(void)
113			{
114			// Assumes that all interrupts default is 0
115			PEIE = 1;
116			GIE = 1;
117	hedin	137	RCIE = 1; // Recieve interrupt enable.
118			IPEN = 0; // Nfo interrupt priority
119			TXIE = 0; // Serial interrupt enabled
120	hedin	148	TMR1IE = 1; // Enables timer 1
121	hedin	82	}
122
123	hedin	175
124
125	hedin	148	void timer_init(void)
126			{
127	hedin	213	TMR1CS = 1; //use external clock
128	hedin	148
129	hedin	213	T1CKPS1 = 1; //1:8 prescale
130	hedin	148	T1CKPS0 = 1;
131
132			TMR1H = 0xEF;
133			TMR1L = 0xFF;
134
135	hedin	213	T1OSCEN = 1; //enable oscillator circuit
136			RD16 = 0; //normal 8 bit writes
137	hedin	148	TMR1ON = 1;
138	hedin	175	}
139
140			void rs232_init(void)
141			{
142			SPEN = 0; // Serial Port Enable Bit... 0 = disabled
143			TRISC6 = 0;
144			TRISC7 = 1;
145	hedin	82
146	hedin	175	SPBRG = 207; // 1200 baud rate... 25 = 9600
147			// x = (Fosc / (16*[baud rate]) )-1
148			TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
149			RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
150			}
151
152	hedin	201	void modem_init(void)
153	hedin	82	{
154	hedin	148	int i;
155	hedin	160	char buf[2];
156	hedin	173
157			while ( strstr(global_message_buffer1,"+WIND: 7") == 0 && global_time_counter < 10 ) ; // Waiting for the modem to be ready
158	hedin	148
159	hedin	150	reset_recieve_buffer();
160	hedin	148	sprintf(global_serial_send,"at+cgsn\r");
161			serial_send();
162	hedin	160
163			while (global_has_imei == 0)
164			{
165			if (strstr(global_message_buffer1,"OK") != 0)
166			{
167			global_imei_tversum = 0;
168			for (i=0; i<15; ++i)
169			{
170			buf[0] = global_message_buffer2[i];
171			buf[1] = 0;
172			global_imei_tversum += atoi(buf);
173			}
174
175			global_has_imei = 1;
176			}
177			}
178	hedin	148
179	hedin	175	sprintf(global_serial_send,"%s", "at+cpin?\r");
180	hedin	139	serial_send();
181	hedin	178	DelayMs(100); // Delay to give the modem a chance to answer.
182	hedin	139
183	hedin	175	if (strstr(global_message_buffer1, "+CPIN: SIM PIN") != 0)
184	hedin	150	{
185	hedin	175	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
186			serial_send();
187
188			while(global_modem_init == 0)
189			{
190			on_initial_recieve();
191			}
192	hedin	150	}
193	hedin	160	reset_recieve_buffer();
194			sprintf(global_serial_send, "at+cmgd=1,4\r");
195			serial_send();
196			while ( strstr(global_message_buffer1,"OK") == 0) ;
197	hedin	82	}
198
199	hedin	137	void serial_send(void)
200			{
201			int i;
202	hedin	148	char data_byte;
203	hedin	150	for(i = 0; i < BUFFER; i++)
204	hedin	109	{
205	hedin	148	data_byte = global_serial_send[i];
206			if( data_byte == '\r')
207	hedin	150	i = (BUFFER - 1);
208	hedin	148	TXREG = data_byte;
209	hedin	139	while(TRMT==0) ;
210	hedin	148	DelayMs(10);
211	hedin	109	}
212	hedin	163	DelayMs(150);
213	hedin	160	global_serial_send[0] = 0;
214	hedin	163	DelayMs(150);
215	hedin	178	}
216
217			void on_initial_recieve(void)
218			{
219			if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
220			{
221			global_modem_init = 1;
222			reset_recieve_buffer();
223			}
224			}
225
226	hedin	175	////////// INTERRUPT HANDLER //////////
227			void interrupt interrupt_handler(void)
228			{
229			// Finds out what interrupt have been trigged, and starts the respective function.
230			if(RCIF == 1) // Serial recieve interrupt
231			{
232			serial_recieved();
233			RCIF = 0;
234			}
235
236			if(TMR1IF == 1) // timer1 interrupt trigger.
237			{
238			timer1_interrupt();
239			TMR1IF = 0;
240			}
241			}
242	hedin	137
243	hedin	175	////////// INTERRUPT TRIGGED //////////
244	hedin	160	void serial_recieved(void)
245	hedin	137	{
246	hedin	162	char data_byte;
247	hedin	137
248	hedin	148	data_byte = RCREG;
249	hedin	137
250	hedin	160	if (data_byte == '\n') // Cant be bothered to do anyting if the byte is a '\n'.
251	hedin	150	return;
252	hedin	151
253	hedin	160	if (global_serial_byte_counter == 0 && data_byte == '\r') // don't care about '\r', if it's the first byte we recieve.
254	hedin	151	return;
255	hedin	150
256	hedin	160
257	hedin	162	if ( global_serial_byte_counter < BUFFER) //Prevent buffer overrun
258			global_serial_recieve_buffer[ global_serial_byte_counter++ ] = data_byte; // fills the data_byte into our buffer.
259	hedin	167	else
260			{
261			global_serial_recieve_buffer[0] = 0;
262			global_serial_byte_counter = 0;
263			return;
264			}
265	hedin	160
266
267			if (data_byte == '\r') // when we meet a '\r', the transmission is done, and we fill the constxt of
268			// global_message_buffer1 into global_message_buffer2 our main buffer into
269			// global_message_buffer2, and the same with our recieve buffer, global_serial_recieve_buffer
270			// into global_message_buffer1.
271	hedin	137	{
272	hedin	160	global_recieve_done = 1; // indicates the recieve transmission is done.
273	hedin	155	global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate
274
275	hedin	160	// global_message_buffer1 -> global_message_buffer2
276			strcpy(global_message_buffer2, global_message_buffer1);
277			global_message_buffer_length2 = global_message_buffer_length1;
278
279			// global_serial_recieve_buffer -> global_message_buffer1
280			strcpy(global_message_buffer1, global_serial_recieve_buffer);
281			global_message_buffer_length1 = global_serial_byte_counter;
282
283
284			global_serial_byte_counter = 0;
285	hedin	137	}
286			}
287	hedin	148
288			void timer1_interrupt(void)
289			{
290			TMR1H = 0xEF;
291			TMR1L = 0xFF;
292			global_time_counter++;
293			global_emergency_counter++;
294	hedin	204	// RA1 = !RA1;
295	hedin	148	}
296	hedin	175	////////// ORDENARY FUNKTIONS //////////
297	hedin	139	void update_lcd(void)
298			{
299	hedin	165	if(global_temp_update_display != global_time_counter)
300			{
301	hedin	167	// lcd_clear();
302	hedin	165	lcd_goto(0x00);
303	hedin	151
304	hedin	165	sprintf(global_lcd_buf, "Temp: %3d", global_temp);
305			lcd_puts(global_lcd_buf);
306			global_temp_update_display = global_time_counter;
307			}
308	hedin	148
309			}
310
311			void send_update(void)
312			{
313	hedin	160	char update[40];
314			sprintf(update, "%d:%d:%d:%d:%d:%d", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL);
315			send_sms(update);
316
317			global_sms_counter++;
318			}
319
320	hedin	163	void send_sms(const unsigned char* payload)
321	hedin	160	{
322			sprintf(global_serial_send, "at+cmgs=\"%s\"\r", global_cell_nr);
323	hedin	148	serial_send();
324	hedin	160	sprintf(global_serial_send, "%s%c", payload, 0x1A);
325	hedin	148	serial_send();
326	hedin	163	DelayMs(150);
327	hedin	178	if(global_sms_counter % 4 == 0)
328	hedin	173	{
329			eeprom_writer();
330			sprintf(global_serial_send, "at+cmgd=1,3\r");
331			serial_send();
332			while ( strstr(global_message_buffer1,"OK") == 0) ;
333			}
334	hedin	148	}
335
336	hedin	205	void convert_temp(void)
337	hedin	148	{
338			short adVal;
339			adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
340			if( adVal >=840 )
341			global_temp = 100;
342			else
343	hedin	160	global_temp = (unsigned char) (adVal / 8.3886);
344	hedin	148	}
345
346
347
348			void eeprom_writer(void)
349			{
350			char len,i;
351
352	hedin	160	len = strlen(global_cell_nr);
353	hedin	148	eeprom_write(0, (global_time_interval/60));
354			eeprom_write(1, global_sms_counter>>8);
355			eeprom_write(2, global_sms_counter);
356			eeprom_write(3, len);
357
358			for (i=0; i<len; ++i)
359	hedin	139	{
360	hedin	160	eeprom_write(i+4, global_cell_nr[i] );
361	hedin	139	}
362			}
363	hedin	148
364			void eeprom_reader(void)
365			{
366			char len,i;
367	hedin	109
368	hedin	148	global_time_interval = eeprom_read(0);
369			global_time_interval *= 60;
370			global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
371			len = eeprom_read(3);
372
373			for (i=0; i<len; ++i)
374			{
375	hedin	160	global_cell_nr[i] = eeprom_read(i+4);
376	hedin	148	}
377
378	hedin	160	global_cell_nr[i] = 0; //zero terminated!
379	hedin	148	}
380
381	hedin	150
382	hedin	148	void on_recieve(void)
383			{
384	hedin	160	char tmp[3];
385	hedin	151	char* ptr;
386			tmp[0]=0;
387
388	hedin	160	if (global_recieve_done == 0 \|\| global_message_buffer_length1 == 0)
389	hedin	150	return;
390	hedin	151
391	hedin	160	if (strstr(global_message_buffer1,"CMTI") != 0) // here we handles a incomming SMS
392			{
393			ptr = strstr(global_message_buffer1,","); // finds the point just before the nr. of the SMS.
394	hedin	201	strcat(tmp,ptr+1); // puts that number in tmp
395			global_sms_recieve_number[0] = 0; // wanna be sure that we write the new number from global_sms_recieve_number[0]
396			strcat(global_sms_recieve_number, tmp); // puts the sms number into the global variable.
397	hedin	160	sms_recieved();
398			}
399			reset_recieve_buffer();
400			}
401
402			void sms_recieved(void)
403			{
404			char buf[4];
405			char i,imei;
406			char pos;
407	hedin	151
408	hedin	160	sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number); // formates the variable that sends commands to the SMS modem.
409			serial_send(); // Sends the command.
410
411			while(strstr(global_message_buffer1, "OK") == 0) // stays here until we recieve a "OK" from the modem.
412			DelayMs(1);
413
414			DelayUs(10);
415
416			for (i=0; global_message_buffer2[i] != ':' && global_message_buffer2[i] != 0; ++i)
417	hedin	151	{
418	hedin	160	buf[i] = global_message_buffer2[i];
419	hedin	150	}
420	hedin	160
421			buf[i] = 0;
422			imei = atoi(buf);
423
424			if (imei == global_imei_tversum)
425	hedin	155	{
426	hedin	160	i++; //spring over ':'
427			pos = 0;
428			for ( ; global_message_buffer2[i] != ':'; ++i, ++pos)
429			{
430			global_cell_nr[pos] = global_message_buffer2[i];
431			}
432			global_cell_nr[pos] = 0; //zero terminator
433
434			i++; //spring over ':'
435			pos=0;
436			for ( ; global_message_buffer2[i] ; ++i,++pos)
437			{
438			buf[pos] = global_message_buffer2[i];
439			}
440			buf[pos]=0;
441
442			global_time_interval = atoi(buf);
443			global_time_interval *= 60;
444	hedin	201	eeprom_writer(); // writes the new cell nr. and time interval to the eeprom.
445	hedin	160	send_sms("conf ok");
446	hedin	155	}
447	hedin	148
448
449	hedin	155	}
450
451	hedin	175	void Delay(int time)
452			{
453			int wanted = (global_time_counter + time) % global_time_interval;
454
455			while (global_time_counter < wanted) ;
456			}
457	hedin	160
458	hedin	82	void main()
459			{
460	hedin	148	////////////////////
461			// Running Init's //
462	hedin	109
463			// Running init for various components.
464	hedin	148	pic18_io_init();
465	hedin	201	RA5 = 1; // Indicates that the board is running inits.
466	hedin	160
467	hedin	148	rs232_init();
468	hedin	109	ad_init();
469			lcd_init(0);
470	hedin	175	lcd_clear();
471			lcd_home();
472	hedin	137	interrupt_init();
473	hedin	173	timer_init();
474	hedin	201	modem_init();
475	hedin	148	eeprom_reader();
476			///////////////
477			// Main loop //
478	hedin	150
479	hedin	151	DelayMs(50);
480			reset_recieve_buffer();
481	hedin	150
482	hedin	213	RA5 = 0; // Inits are done, and RA1 will now work as a error notifier.
483	hedin	160
484	hedin	109	while(1)
485	hedin	100	{
486	hedin	148	// If there happends to be a critical state on the system, we send a sms.
487	hedin	173	if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING ==1 ) && global_emergency_counter >= 600 )
488	hedin	148	{
489			send_update();
490			global_emergency_counter = 0;
491			}
492	hedin	175
493	hedin	148	// Every X sec. a status sms is send.
494	hedin	175	if(global_time_counter >= global_time_interval)
495	hedin	148	{
496			send_update();
497			global_time_counter = 0;
498			}
499			// To avoid buffer overrun.
500			if( global_emergency_counter > 7200 )
501			global_emergency_counter = 600;
502
503	hedin	109	// Checking if A/D convertion is done, and save the data in global_Pot_??
504			if(GODONE==0)
505			{
506			global_Pot_Hi = ADRESH;
507			global_Pot_Lo = ADRESL;
508	hedin	178	convert_temp();
509	hedin	165	update_lcd();
510	hedin	112	GODONE = 1;
511	hedin	109	}
512	hedin	151	// Handels the recieve sms'es.
513			on_recieve();
514	hedin	100	}
515	hedin	82	}