trunk/Embedded/main.c

#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, global_Pot_Lo;
unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
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)
{
        global_recieve_done = 0; 
        global_serial_byte_counter=0;
}       


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 pic18_io_init(void)
{
        TRISA0  = 1;    // analog input
        TRISA1  = 0;    // Output
        TRISB1  = 1;    // TRISB1-4 Digital input
        TRISB2  = 1;
        TRISB3  = 1;
        TRISB4  = 1;
}       

void sms_init(void)
{
        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)                   // 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(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)
{
        lcd_clear();
        lcd_goto(0x00);
        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)
        {
                eeprom_write(i+4, 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)
        {
                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)
        {
                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();
        }
        

}


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 for various components.
        pic18_io_init();
        rs232_init();
        ad_init();
        lcd_init(0);
        interrupt_init();
        sms_init();
        //eeprom_init();
        timer_init();
        eeprom_reader();
///////////////
// 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;
                }
                
                //if (global_recieve_done)
                //{
                        on_recieve();
                //      global_recieve_done = 0;
                //      global_serial_byte_counter = 0;
                //}
        }
}
1	hedin	82	#include <pic18.h>
2			#include <stdio.h>
3	hedin	148	#include <htc.h>
4	hedin	82	#include <string.h>
5	hedin	148
6	hedin	82	#include "lcd.h"
7	hedin	137	#include "Delay.h"
8	hedin	109	// Delay.h is included inside lcd.c
9	hedin	82
10	hedin	109	#define LCD_LENGTH 16
11			#define LCD_ROWS 2
12	hedin	150	#define BUFFER 128
13	hedin	148	#define PWRFAIL RB1
14			#define FIREDET RB2
15			#define FEEDING RB3
16			#define EMPTYTANK RB4
17	hedin	109
18
19	hedin	137	unsigned char global_Pot_Hi, global_Pot_Lo;
20	hedin	109	unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
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	137
27	hedin	150	unsigned short global_imei_tversum;
28
29	hedin	148	unsigned char cell_nr[15] = ""; // = "21681784";
30	hedin	150	bit global_modem_init = 0;
31	hedin	148
32			__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
33			__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
34
35	hedin	137	void serial_recieved(void);
36	hedin	139	void serial_send(void);
37			void update_lcd(void);
38	hedin	148	void convertTemp(void);
39			void timer1_interrupt(void);
40	hedin	150	void on_recieve(void);
41			void on_initial_recieve(void);
42	hedin	137
43	hedin	150
44			void reset_recieve_buffer(void)
45	hedin	109	{
46	hedin	150	global_recieve_done = 0;
47			global_serial_byte_counter=0;
48			}
49
50
51			void ad_init(void) // Nicked from H7
52			{
53	hedin	109	// AD Conversion clock
54			ADCS0 = 0;
55			ADCS1 = 0;
56			ADCS2 = 0;
57	hedin	82
58	hedin	109	//Select AN0/RA0 for AD source
59			// In this (000) setup, it's only RA0/AN0 that does ad convertion.
60			CHS0=0;
61			CHS1=0;
62			CHS2=0;
63
64			//Only AN0 is selected for AD and with Vdd/Vss as limits
65			PCFG0=0;
66			PCFG1=1;
67			PCFG2=1;
68			PCFG3=1;
69
70	hedin	148	//Result is right justified
71			ADFM=1;
72	hedin	109
73			//Fire up for A/D converter module
74			ADON=1;
75			}
76
77	hedin	82	void rs232_init(void)
78			{
79			SPEN = 0; // Serial Port Enable Bit... 0 = disabled
80	hedin	137	TRISC6 = 0;
81	hedin	82	TRISC7 = 1;
82	hedin	137
83			SPBRG = 207; // 1200 baud rate... 25 = 9600
84			// x = (Fosc / (16*[baud rate]) )-1
85			TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
86			RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
87	hedin	82	}
88
89			void interrupt_init(void)
90			{
91			// Assumes that all interrupts default is 0
92			PEIE = 1;
93			GIE = 1;
94	hedin	137	RCIE = 1; // Recieve interrupt enable.
95			IPEN = 0; // Nfo interrupt priority
96			TXIE = 0; // Serial interrupt enabled
97	hedin	148	TMR1IE = 1; // Enables timer 1
98	hedin	82	}
99
100	hedin	148	void timer_init(void)
101			{
102			TMR1CS = 1; //use external clock
103
104			T1CKPS1 = 1; //1:8 prescale
105			T1CKPS0 = 1;
106
107			TMR1H = 0xEF;
108			TMR1L = 0xFF;
109
110			T1OSCEN = 1; //enable oscillator circuit
111			RD16 = 0; //normal 8 bit writes
112			TMR1ON = 1;
113			}
114
115	hedin	82	void pic18_io_init(void)
116			{
117	hedin	109	TRISA0 = 1; // analog input
118	hedin	148	TRISA1 = 0; // Output
119	hedin	109	TRISB1 = 1; // TRISB1-4 Digital input
120	hedin	82	TRISB2 = 1;
121			TRISB3 = 1;
122			TRISB4 = 1;
123			}
124
125	hedin	137	void sms_init(void)
126	hedin	82	{
127	hedin	148	int i;
128
129	hedin	150	reset_recieve_buffer();
130	hedin	148	sprintf(global_serial_send,"at+cgsn\r");
131			serial_send();
132			DelaySek(1);
133			while(!global_recieve_done) ;
134
135
136	hedin	139	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
137			serial_send();
138
139	hedin	150	while(global_modem_init == 0)
140			{
141			on_initial_recieve();
142			}
143	hedin	82	}
144
145	hedin	148
146	hedin	82	void interrupt interrupt_handler(void)
147			{
148	hedin	109	// Finds out what interrupt have been trigged, and starts the respective function.
149	hedin	137	if(RCIF == 1) // Serial recieve interrupt
150	hedin	82	{
151	hedin	137	serial_recieved();
152	hedin	82	RCIF = 0;
153			}
154	hedin	148
155			if(TMR1IF == 1) // timer1 interrupt trigger.
156			{
157			timer1_interrupt();
158			TMR1IF = 0;
159			}
160	hedin	82	}
161	hedin	109
162	hedin	137
163			void serial_send(void)
164			{
165			int i;
166	hedin	148	char data_byte;
167	hedin	150	for(i = 0; i < BUFFER; i++)
168	hedin	109	{
169	hedin	148	data_byte = global_serial_send[i];
170			if( data_byte == '\r')
171	hedin	150	i = (BUFFER - 1);
172	hedin	148	TXREG = data_byte;
173	hedin	139	while(TRMT==0) ;
174	hedin	148	DelayMs(10);
175	hedin	109	}
176	hedin	148	DelayMs(250);
177			DelayMs(250);
178	hedin	137	}
179
180			void serial_recieved(void)
181			{
182	hedin	148	char data_byte, saved_data[LCD_LENGTH];
183	hedin	137
184	hedin	148	data_byte = RCREG;
185	hedin	137
186	hedin	150	if (data_byte == '\n')
187			return;
188
189	hedin	148	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
190	hedin	150
191			if (data_byte == '\r')
192	hedin	137	{
193			global_recieve_done = 1;
194	hedin	150	//global_serial_byte_counter = 0;
195			global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
196	hedin	137	}
197	hedin	109	else
198			{
199	hedin	137	global_serial_byte_counter++;
200	hedin	109	}
201
202	hedin	137	}
203	hedin	148
204			void timer1_interrupt(void)
205			{
206			TMR1H = 0xEF;
207			TMR1L = 0xFF;
208			global_time_counter++;
209			global_emergency_counter++;
210			RA1 = !RA1;
211			}
212
213	hedin	139	void update_lcd(void)
214			{
215	hedin	148	lcd_clear();
216			lcd_goto(0x00);
217			lcd_puts(global_temp);
218
219			}
220
221			void send_update(void)
222			{
223			sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
224			serial_send();
225			sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
226			lcd_goto(40);
227			lcd_puts(global_serial_send);
228			serial_send();
229			DelayMs(250);
230			global_sms_counter++;
231			}
232
233			void convertTemp()
234			{
235			short adVal;
236			adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
237			if( adVal >=840 )
238			global_temp = 100;
239			else
240			global_temp = (adVal / 8.3886);
241			}
242
243
244
245			void eeprom_writer(void)
246			{
247			char len,i;
248
249			len = strlen(cell_nr);
250			eeprom_write(0, (global_time_interval/60));
251			eeprom_write(1, global_sms_counter>>8);
252			eeprom_write(2, global_sms_counter);
253			eeprom_write(3, len);
254
255			for (i=0; i<len; ++i)
256	hedin	139	{
257	hedin	148	eeprom_write(i+4, cell_nr[i] );
258	hedin	139	}
259			}
260	hedin	148
261			void eeprom_reader(void)
262			{
263			char len,i;
264	hedin	109
265	hedin	148	global_time_interval = eeprom_read(0);
266			global_time_interval *= 60;
267			global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
268			len = eeprom_read(3);
269
270			for (i=0; i<len; ++i)
271			{
272			cell_nr[i] = eeprom_read(i+4);
273			}
274
275			cell_nr[i] = 0; //zero terminated!
276			}
277
278	hedin	150	void on_initial_recieve(void)
279			{
280			char imei[16];
281			char* ptr;
282			char i;
283
284			if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
285			{
286			global_modem_init = 1;
287
288			ptr = strstr(global_serial_recieve_buffer,"cgsn");
289			ptr +=4;
290			strncpy(imei, ptr,15);
291			imei[15] = 0;
292
293			global_imei_tversum = 0;
294			for (i=0; i<15; ++i)
295			{
296			global_imei_tversum += (imei[i] - '0');
297			}
298
299
300			reset_recieve_buffer();
301			}
302
303
304			}
305
306
307	hedin	148	void on_recieve(void)
308			{
309	hedin	150	char tmp[17];
310			if (global_recieve_done == 0)
311			return;
312
313			lcd_clear();
314			lcd_goto(0x00);
315			tmp[0] = 0;
316			strncat(tmp,global_serial_recieve_buffer,16);
317			lcd_puts(tmp);
318			if (strncmp(global_serial_recieve_buffer,"+WIND: 11", 3) == 0)
319			{
320			global_modem_init = 1;
321			}
322	hedin	148
323	hedin	150	reset_recieve_buffer();
324	hedin	148	}
325
326	hedin	82	void main()
327			{
328	hedin	148	////////////////////
329			// Running Init's //
330	hedin	109
331			// Running init for various components.
332	hedin	148	pic18_io_init();
333			rs232_init();
334	hedin	109	ad_init();
335			lcd_init(0);
336	hedin	137	interrupt_init();
337	hedin	139	sms_init();
338	hedin	148	//eeprom_init();
339			timer_init();
340			eeprom_reader();
341			///////////////
342			// Main loop //
343	hedin	150
344
345	hedin	109	while(1)
346	hedin	100	{
347	hedin	148	// If there happends to be a critical state on the system, we send a sms.
348			if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING == 1 \|\| EMPTYTANK == 1) && global_emergency_counter >= 600 )
349			{
350			send_update();
351			global_emergency_counter = 0;
352			}
353			// Every X sec. a status sms is send.
354			if(global_time_counter >= 3600)
355			{
356			send_update();
357			global_time_counter = 0;
358			}
359			// To avoid buffer overrun.
360			if( global_emergency_counter > 7200 )
361			global_emergency_counter = 600;
362
363			// Checks if there has been recieved a config sms.
364			if(global_interval_changed )
365			{
366			eeprom_writer();
367			global_interval_changed = 0;
368			}
369	hedin	109	// Checking if A/D convertion is done, and save the data in global_Pot_??
370			if(GODONE==0)
371			{
372			global_Pot_Hi = ADRESH;
373			global_Pot_Lo = ADRESL;
374	hedin	148	convertTemp();
375			update_lcd();
376	hedin	112	GODONE = 1;
377	hedin	109	}
378	hedin	150
379			//if (global_recieve_done)
380			//{
381			on_recieve();
382			// global_recieve_done = 0;
383			// global_serial_byte_counter = 0;
384			//}
385	hedin	100	}
386	hedin	82	}