--- trunk/Embedded/main.c	2007/11/30 16:07:03	112
+++ trunk/Embedded/main.c	2007/12/04 19:07:00	150
@@ -1,23 +1,54 @@
 #include <pic18.h>
 #include <stdio.h>
+#include <htc.h>
 #include <string.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;
-unsigned char global_Pot_Lo;
+unsigned char global_Pot_Hi, global_Pot_Lo;
 unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
-/*void AD_init(void)
+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 short global_imei_tversum;
+
+unsigned char cell_nr[15] = ""; // = "21681784";
+bit global_modem_init = 0;
+
+__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 reset_recieve_buffer(void)
 {
-	ADON	= 1;
-}
-*/
-// Nicked from H7
-void ad_init(void)
+	global_recieve_done = 0; 
+	global_serial_byte_counter=0;
+}	
+
+
+void ad_init(void) // Nicked from H7
 {
 	// AD Conversion clock
 	ADCS0 = 0;
@@ -36,8 +67,8 @@
 	PCFG2=1;
 	PCFG3=1;
 	
-	//Result is left justified
-	ADFM=0; 
+	//Result is right justified
+	ADFM=1; 
 	
 	//Fire up for A/D converter module
 	ADON=1;
@@ -46,13 +77,13 @@
 void rs232_init(void)
 {
 	SPEN	= 0;	// Serial Port Enable Bit... 0 = disabled
-	TRISC6	= 0;
+	TRISC6	= 0;	
 	TRISC7	= 1;
-	SYNC	= 0;	// SYNC switches between async(0) and sync(1) mode.
-	SPBRG	= 25;
-	TXSTA	= 0x24;
-	RCSTA	= 0x90;
-	SPEN	= 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)
@@ -60,81 +91,296 @@
 	// Assumes that all interrupts default is 0
 	PEIE	= 1;
 	GIE		= 1;
-	RCIE	= 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 pic18_io_init(void)
 {
 	TRISA0	= 1;	// analog input
+	TRISA1	= 0;	// Output
 	TRISB1	= 1;	// TRISB1-4 Digital input
 	TRISB2	= 1;
 	TRISB3	= 1;
 	TRISB4	= 1;
 }	
 
-void interrupt_recieve_handler(void)
+void sms_init(void)
 {
-	// Handle recieve inputs...
+	int i;
+
+	reset_recieve_buffer();
+	sprintf(global_serial_send,"at+cgsn\r");
+	serial_send();
+	DelaySek(1);
+	while(!global_recieve_done) ;
+
+
+	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
+	serial_send();
+	
+	while(global_modem_init == 0)
+	{
+		on_initial_recieve();
+	}
 }
 
+
 void interrupt interrupt_handler(void)
 {
 	// Finds out what interrupt have been trigged, and starts the respective function.
-	if(RCIF == 1)
+	if(RCIF == 1)			// Serial recieve interrupt
 	{
-		interrupt_recieve_handler();
+		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(250);
+	DelayMs(250);
+}	
+
+void serial_recieved(void)
+{
+	char data_byte, saved_data[LCD_LENGTH];
+	
+	data_byte = RCREG;
+	
+	if (data_byte == '\n')
+		return;
+
+	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
+		
+	if (data_byte == '\r')
+	{
+		global_recieve_done = 1;
+		//global_serial_byte_counter = 0;
+		global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
+	}	
+	else
+	{
+		global_serial_byte_counter++;
+	}
+	
+}
+
+void timer1_interrupt(void)
+{
+	TMR1H = 0xEF;
+	TMR1L = 0xFF;
+	global_time_counter++;
+	global_emergency_counter++;
+	RA1 = !RA1;
+}
+
 void update_lcd(void)
-{	
-	char toLCD0[LCD_LENGTH], toLCD1[LCD_LENGTH];
-	char B1[LCD_LENGTH];
-	char sprintF[LCD_LENGTH];
+{
+	lcd_clear();
 	lcd_goto(0x00);
-	sprintf(toLCD0, "%s", "Ejdesgaard");
-	if(RB1)
+	lcd_puts(global_temp);
+
+}
+	
+void send_update(void)
+{
+	sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
+	serial_send();
+	sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
+	lcd_goto(40);
+	lcd_puts(global_serial_send);
+	serial_send();
+	DelayMs(250);
+	global_sms_counter++;
+}	
+
+void convertTemp()
+{
+	short adVal;
+	adVal = (global_Pot_Hi << 8) | global_Pot_Lo;
+	if( adVal >=840 )
+		global_temp = 100;
+	else
+		global_temp = (adVal / 8.3886);
+}
+
+
+
+void eeprom_writer(void)
+{
+	char len,i;
+	
+	len = strlen(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)
 	{
-		sprintf(B1, "Pwr%s", "True");
+		eeprom_write(i+4, cell_nr[i] );
 	}
-	else
+}
+
+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)
+	{
+		cell_nr[i] = eeprom_read(i+4);
+	}
+	
+	cell_nr[i] = 0; //zero terminated!
+}	
+
+void on_initial_recieve(void)
+{
+	char imei[16];
+	char* ptr;
+	char i;
+	
+	if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
 	{
-		sprintf(B1, "%s", "False");
+		global_modem_init = 1;
+
+		ptr = strstr(global_serial_recieve_buffer,"cgsn");
+		ptr +=4;
+		strncpy(imei, ptr,15);
+		imei[15] = 0;
+
+		global_imei_tversum = 0;
+		for (i=0; i<15; ++i)
+		{
+			global_imei_tversum += (imei[i] - '0');
+		}
+		
+		
+		reset_recieve_buffer();
 	}
-	lcd_puts(B1);
 	
-	lcd_goto(0x40);
-	sprintf(sprintF,"%08d%08d", global_Pot_Hi, global_Pot_Lo);
-	lcd_puts(sprintF); 
+
+}
+
+
+void on_recieve(void)
+{
+	char tmp[17];
+	if (global_recieve_done == 0)
+		return;
+		
+	lcd_clear();
+	lcd_goto(0x00);
+	tmp[0] = 0;
+	strncat(tmp,global_serial_recieve_buffer,16);
+	lcd_puts(tmp);
+	if (strncmp(global_serial_recieve_buffer,"+WIND: 11", 3) == 0)
+	{
+		global_modem_init = 1;
+	}
 	
+	reset_recieve_buffer();
 }
 
 void main()
 {
-/////////////////////////////////////////////
-// Running Init's
+////////////////////
+// Running Init's //
 
 	// Running init for various components.
-	//AD_init();
-	ad_init();
-	rs232_init();
 	pic18_io_init();
+	rs232_init();
+	ad_init();
 	lcd_init(0);
+	interrupt_init();
+	sms_init();
+	//eeprom_init();
+	timer_init();
+	eeprom_reader();
+///////////////
+// Main loop //
 
-/////////////////////////////////////////////
-// Main loop
 
 	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();
+			update_lcd();
 			GODONE = 1;
 		}
 		
-	update_lcd();
+		//if (global_recieve_done)
+		//{
+			on_recieve();
+		//	global_recieve_done = 0;
+		//	global_serial_byte_counter = 0;
+		//}
 	}
 }