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 char global_lcd_buf[16];

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;
                
        if (global_serial_byte_counter == 0 && data_byte == '\r')
                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);
        
        sprintf(global_lcd_buf, "%d", global_temp);
        lcd_puts(global_lcd_buf);

}
        
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];
        char* ptr;
        tmp[0]=0;
                
        if (global_recieve_done == 0)
                return;

        lcd_goto(0x00);
        lcd_puts(global_serial_recieve_buffer);         
        
        if (strstr(global_serial_recieve_buffer,"CMTI") == 0)
        {
                ptr = strstr(global_serial_recieve_buffer,"'");
                strcat(tmp,ptr);


        lcd_goto(0x40);
        lcd_puts(tmp);
                
        }
        
        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 //

        DelayMs(50);
        reset_recieve_buffer();

        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;
                }
        // 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	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	151	unsigned char global_lcd_buf[16];
28
29	hedin	150	unsigned short global_imei_tversum;
30
31	hedin	148	unsigned char cell_nr[15] = ""; // = "21681784";
32	hedin	150	bit global_modem_init = 0;
33	hedin	148
34			__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
35			__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
36
37	hedin	137	void serial_recieved(void);
38	hedin	139	void serial_send(void);
39			void update_lcd(void);
40	hedin	148	void convertTemp(void);
41			void timer1_interrupt(void);
42	hedin	150	void on_recieve(void);
43			void on_initial_recieve(void);
44	hedin	137
45	hedin	150
46			void reset_recieve_buffer(void)
47	hedin	109	{
48	hedin	150	global_recieve_done = 0;
49			global_serial_byte_counter=0;
50			}
51
52
53			void ad_init(void) // Nicked from H7
54			{
55	hedin	109	// AD Conversion clock
56			ADCS0 = 0;
57			ADCS1 = 0;
58			ADCS2 = 0;
59	hedin	82
60	hedin	109	//Select AN0/RA0 for AD source
61			// In this (000) setup, it's only RA0/AN0 that does ad convertion.
62			CHS0=0;
63			CHS1=0;
64			CHS2=0;
65
66			//Only AN0 is selected for AD and with Vdd/Vss as limits
67			PCFG0=0;
68			PCFG1=1;
69			PCFG2=1;
70			PCFG3=1;
71
72	hedin	148	//Result is right justified
73			ADFM=1;
74	hedin	109
75			//Fire up for A/D converter module
76			ADON=1;
77			}
78
79	hedin	82	void rs232_init(void)
80			{
81			SPEN = 0; // Serial Port Enable Bit... 0 = disabled
82	hedin	137	TRISC6 = 0;
83	hedin	82	TRISC7 = 1;
84	hedin	137
85			SPBRG = 207; // 1200 baud rate... 25 = 9600
86			// x = (Fosc / (16*[baud rate]) )-1
87			TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
88			RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
89	hedin	82	}
90
91			void interrupt_init(void)
92			{
93			// Assumes that all interrupts default is 0
94			PEIE = 1;
95			GIE = 1;
96	hedin	137	RCIE = 1; // Recieve interrupt enable.
97			IPEN = 0; // Nfo interrupt priority
98			TXIE = 0; // Serial interrupt enabled
99	hedin	148	TMR1IE = 1; // Enables timer 1
100	hedin	82	}
101
102	hedin	148	void timer_init(void)
103			{
104			TMR1CS = 1; //use external clock
105
106			T1CKPS1 = 1; //1:8 prescale
107			T1CKPS0 = 1;
108
109			TMR1H = 0xEF;
110			TMR1L = 0xFF;
111
112			T1OSCEN = 1; //enable oscillator circuit
113			RD16 = 0; //normal 8 bit writes
114			TMR1ON = 1;
115			}
116
117	hedin	82	void pic18_io_init(void)
118			{
119	hedin	109	TRISA0 = 1; // analog input
120	hedin	148	TRISA1 = 0; // Output
121	hedin	109	TRISB1 = 1; // TRISB1-4 Digital input
122	hedin	82	TRISB2 = 1;
123			TRISB3 = 1;
124			TRISB4 = 1;
125			}
126
127	hedin	137	void sms_init(void)
128	hedin	82	{
129	hedin	148	int i;
130
131	hedin	150	reset_recieve_buffer();
132	hedin	148	sprintf(global_serial_send,"at+cgsn\r");
133			serial_send();
134			DelaySek(1);
135			while(!global_recieve_done) ;
136
137
138	hedin	139	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
139			serial_send();
140
141	hedin	150	while(global_modem_init == 0)
142			{
143			on_initial_recieve();
144			}
145	hedin	82	}
146
147	hedin	148
148	hedin	82	void interrupt interrupt_handler(void)
149			{
150	hedin	109	// Finds out what interrupt have been trigged, and starts the respective function.
151	hedin	137	if(RCIF == 1) // Serial recieve interrupt
152	hedin	82	{
153	hedin	137	serial_recieved();
154	hedin	82	RCIF = 0;
155			}
156	hedin	148
157			if(TMR1IF == 1) // timer1 interrupt trigger.
158			{
159			timer1_interrupt();
160			TMR1IF = 0;
161			}
162	hedin	82	}
163	hedin	109
164	hedin	137
165			void serial_send(void)
166			{
167			int i;
168	hedin	148	char data_byte;
169	hedin	150	for(i = 0; i < BUFFER; i++)
170	hedin	109	{
171	hedin	148	data_byte = global_serial_send[i];
172			if( data_byte == '\r')
173	hedin	150	i = (BUFFER - 1);
174	hedin	148	TXREG = data_byte;
175	hedin	139	while(TRMT==0) ;
176	hedin	148	DelayMs(10);
177	hedin	109	}
178	hedin	148	DelayMs(250);
179			DelayMs(250);
180	hedin	137	}
181
182			void serial_recieved(void)
183			{
184	hedin	148	char data_byte, saved_data[LCD_LENGTH];
185	hedin	137
186	hedin	148	data_byte = RCREG;
187	hedin	137
188	hedin	150	if (data_byte == '\n')
189			return;
190	hedin	151
191			if (global_serial_byte_counter == 0 && data_byte == '\r')
192			return;
193	hedin	150
194	hedin	148	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
195	hedin	150
196			if (data_byte == '\r')
197	hedin	137	{
198			global_recieve_done = 1;
199	hedin	150	//global_serial_byte_counter = 0;
200			global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
201	hedin	137	}
202	hedin	109	else
203			{
204	hedin	137	global_serial_byte_counter++;
205	hedin	109	}
206
207	hedin	137	}
208	hedin	148
209			void timer1_interrupt(void)
210			{
211			TMR1H = 0xEF;
212			TMR1L = 0xFF;
213			global_time_counter++;
214			global_emergency_counter++;
215			RA1 = !RA1;
216			}
217
218	hedin	139	void update_lcd(void)
219			{
220	hedin	148	lcd_clear();
221			lcd_goto(0x00);
222	hedin	151
223			sprintf(global_lcd_buf, "%d", global_temp);
224			lcd_puts(global_lcd_buf);
225	hedin	148
226			}
227
228			void send_update(void)
229			{
230			sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
231			serial_send();
232			sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
233			lcd_goto(40);
234			lcd_puts(global_serial_send);
235			serial_send();
236			DelayMs(250);
237			global_sms_counter++;
238			}
239
240			void convertTemp()
241			{
242			short adVal;
243			adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
244			if( adVal >=840 )
245			global_temp = 100;
246			else
247			global_temp = (adVal / 8.3886);
248			}
249
250
251
252			void eeprom_writer(void)
253			{
254			char len,i;
255
256			len = strlen(cell_nr);
257			eeprom_write(0, (global_time_interval/60));
258			eeprom_write(1, global_sms_counter>>8);
259			eeprom_write(2, global_sms_counter);
260			eeprom_write(3, len);
261
262			for (i=0; i<len; ++i)
263	hedin	139	{
264	hedin	148	eeprom_write(i+4, cell_nr[i] );
265	hedin	139	}
266			}
267	hedin	148
268			void eeprom_reader(void)
269			{
270			char len,i;
271	hedin	109
272	hedin	148	global_time_interval = eeprom_read(0);
273			global_time_interval *= 60;
274			global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
275			len = eeprom_read(3);
276
277			for (i=0; i<len; ++i)
278			{
279			cell_nr[i] = eeprom_read(i+4);
280			}
281
282			cell_nr[i] = 0; //zero terminated!
283			}
284
285	hedin	150	void on_initial_recieve(void)
286			{
287			char imei[16];
288			char* ptr;
289			char i;
290
291			if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
292			{
293			global_modem_init = 1;
294
295			ptr = strstr(global_serial_recieve_buffer,"cgsn");
296			ptr +=4;
297			strncpy(imei, ptr,15);
298			imei[15] = 0;
299
300			global_imei_tversum = 0;
301			for (i=0; i<15; ++i)
302			{
303			global_imei_tversum += (imei[i] - '0');
304			}
305
306
307			reset_recieve_buffer();
308			}
309			}
310
311
312	hedin	148	void on_recieve(void)
313			{
314	hedin	150	char tmp[17];
315	hedin	151	char* ptr;
316			tmp[0]=0;
317
318	hedin	150	if (global_recieve_done == 0)
319			return;
320	hedin	151
321	hedin	150	lcd_goto(0x00);
322	hedin	151	lcd_puts(global_serial_recieve_buffer);
323
324			if (strstr(global_serial_recieve_buffer,"CMTI") == 0)
325			{
326			ptr = strstr(global_serial_recieve_buffer,"'");
327			strcat(tmp,ptr);
328
329
330			lcd_goto(0x40);
331	hedin	150	lcd_puts(tmp);
332	hedin	151
333	hedin	150	}
334	hedin	148
335	hedin	150	reset_recieve_buffer();
336	hedin	148	}
337
338	hedin	82	void main()
339			{
340	hedin	148	////////////////////
341			// Running Init's //
342	hedin	109
343			// Running init for various components.
344	hedin	148	pic18_io_init();
345			rs232_init();
346	hedin	109	ad_init();
347			lcd_init(0);
348	hedin	137	interrupt_init();
349	hedin	139	sms_init();
350	hedin	148	//eeprom_init();
351			timer_init();
352			eeprom_reader();
353			///////////////
354			// Main loop //
355	hedin	150
356	hedin	151	DelayMs(50);
357			reset_recieve_buffer();
358	hedin	150
359	hedin	109	while(1)
360	hedin	100	{
361	hedin	148	// If there happends to be a critical state on the system, we send a sms.
362			if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING == 1 \|\| EMPTYTANK == 1) && global_emergency_counter >= 600 )
363			{
364			send_update();
365			global_emergency_counter = 0;
366			}
367			// Every X sec. a status sms is send.
368			if(global_time_counter >= 3600)
369			{
370			send_update();
371			global_time_counter = 0;
372			}
373			// To avoid buffer overrun.
374			if( global_emergency_counter > 7200 )
375			global_emergency_counter = 600;
376
377			// Checks if there has been recieved a config sms.
378			if(global_interval_changed )
379			{
380			eeprom_writer();
381			global_interval_changed = 0;
382			}
383	hedin	109	// Checking if A/D convertion is done, and save the data in global_Pot_??
384			if(GODONE==0)
385			{
386			global_Pot_Hi = ADRESH;
387			global_Pot_Lo = ADRESL;
388	hedin	148	convertTemp();
389	hedin	151	//update_lcd();
390	hedin	112	GODONE = 1;
391	hedin	109	}
392	hedin	151	// Handels the recieve sms'es.
393			on_recieve();
394	hedin	100	}
395	hedin	82	}