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_message_buffer[BUFFER];
unsigned char global_message_buffer_length;

unsigned char global_lcd_buf[16];

unsigned short global_imei_tversum;

unsigned char cell_nr[15] = ""; // = "21681784";
bit global_modem_init = 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 reset_recieve_buffer(void)
{
        global_recieve_done = 0;
        
        global_serial_byte_counter=0;
        global_serial_recieve_buffer[0] = 0;
        
        global_message_buffer_length = 0;
        global_message_buffer[0] = 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] = 0; //zero terminate
                
                strcpy(global_message_buffer, global_serial_recieve_buffer);
                global_message_buffer_length = global_serial_byte_counter;
        }       
        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 || global_message_buffer_length == 0)
                return;

        
        if (strstr(global_serial_recieve_buffer,"CMTI") != 0)
        {
                ptr = strstr(global_serial_recieve_buffer,",");
                strcat(tmp,ptr+1);
                sprintf(global_sms_recieve_number,"%s", tmp);
                lcd_clear();
                lcd_puts(global_sms_recieve_number);
                sms_recieved();
        }
        else if (strstr(global_message_buffer,"CMTI") != 0)
        {
                ptr = strstr(global_message_buffer,",");
                strcat(tmp,ptr+1);
                lcd_clear();
                lcd_puts(tmp);
        }
        
        
        reset_recieve_buffer();
}

void sms_recieved(void)
{
        sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number);
        serial_send();
}

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	155	unsigned char global_message_buffer[BUFFER];
28			unsigned char global_message_buffer_length;
29
30	hedin	151	unsigned char global_lcd_buf[16];
31
32	hedin	150	unsigned short global_imei_tversum;
33
34	hedin	148	unsigned char cell_nr[15] = ""; // = "21681784";
35	hedin	150	bit global_modem_init = 0;
36	hedin	148
37	hedin	155	unsigned char global_sms_recieve_number[3];
38
39	hedin	148	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
40			__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
41
42	hedin	137	void serial_recieved(void);
43	hedin	139	void serial_send(void);
44			void update_lcd(void);
45	hedin	148	void convertTemp(void);
46			void timer1_interrupt(void);
47	hedin	150	void on_recieve(void);
48			void on_initial_recieve(void);
49	hedin	155	void sms_recieved(void);
50	hedin	137
51	hedin	150
52			void reset_recieve_buffer(void)
53	hedin	109	{
54	hedin	155	global_recieve_done = 0;
55
56	hedin	150	global_serial_byte_counter=0;
57	hedin	155	global_serial_recieve_buffer[0] = 0;
58
59			global_message_buffer_length = 0;
60			global_message_buffer[0] = 0;
61	hedin	150	}
62
63
64			void ad_init(void) // Nicked from H7
65			{
66	hedin	109	// AD Conversion clock
67			ADCS0 = 0;
68			ADCS1 = 0;
69			ADCS2 = 0;
70	hedin	82
71	hedin	109	//Select AN0/RA0 for AD source
72			// In this (000) setup, it's only RA0/AN0 that does ad convertion.
73			CHS0=0;
74			CHS1=0;
75			CHS2=0;
76
77			//Only AN0 is selected for AD and with Vdd/Vss as limits
78			PCFG0=0;
79			PCFG1=1;
80			PCFG2=1;
81			PCFG3=1;
82
83	hedin	148	//Result is right justified
84			ADFM=1;
85	hedin	109
86			//Fire up for A/D converter module
87			ADON=1;
88			}
89
90	hedin	82	void rs232_init(void)
91			{
92			SPEN = 0; // Serial Port Enable Bit... 0 = disabled
93	hedin	137	TRISC6 = 0;
94	hedin	82	TRISC7 = 1;
95	hedin	137
96			SPBRG = 207; // 1200 baud rate... 25 = 9600
97			// x = (Fosc / (16*[baud rate]) )-1
98			TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
99			RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
100	hedin	82	}
101
102			void interrupt_init(void)
103			{
104			// Assumes that all interrupts default is 0
105			PEIE = 1;
106			GIE = 1;
107	hedin	137	RCIE = 1; // Recieve interrupt enable.
108			IPEN = 0; // Nfo interrupt priority
109			TXIE = 0; // Serial interrupt enabled
110	hedin	148	TMR1IE = 1; // Enables timer 1
111	hedin	82	}
112
113	hedin	148	void timer_init(void)
114			{
115			TMR1CS = 1; //use external clock
116
117			T1CKPS1 = 1; //1:8 prescale
118			T1CKPS0 = 1;
119
120			TMR1H = 0xEF;
121			TMR1L = 0xFF;
122
123			T1OSCEN = 1; //enable oscillator circuit
124			RD16 = 0; //normal 8 bit writes
125			TMR1ON = 1;
126			}
127
128	hedin	82	void pic18_io_init(void)
129			{
130	hedin	109	TRISA0 = 1; // analog input
131	hedin	148	TRISA1 = 0; // Output
132	hedin	109	TRISB1 = 1; // TRISB1-4 Digital input
133	hedin	82	TRISB2 = 1;
134			TRISB3 = 1;
135			TRISB4 = 1;
136			}
137
138	hedin	137	void sms_init(void)
139	hedin	82	{
140	hedin	148	int i;
141
142	hedin	150	reset_recieve_buffer();
143	hedin	148	sprintf(global_serial_send,"at+cgsn\r");
144			serial_send();
145			DelaySek(1);
146			while(!global_recieve_done) ;
147
148
149	hedin	139	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
150			serial_send();
151
152	hedin	150	while(global_modem_init == 0)
153			{
154			on_initial_recieve();
155			}
156	hedin	82	}
157
158	hedin	148
159	hedin	82	void interrupt interrupt_handler(void)
160			{
161	hedin	109	// Finds out what interrupt have been trigged, and starts the respective function.
162	hedin	137	if(RCIF == 1) // Serial recieve interrupt
163	hedin	82	{
164	hedin	137	serial_recieved();
165	hedin	82	RCIF = 0;
166			}
167	hedin	148
168			if(TMR1IF == 1) // timer1 interrupt trigger.
169			{
170			timer1_interrupt();
171			TMR1IF = 0;
172			}
173	hedin	82	}
174	hedin	109
175	hedin	137
176			void serial_send(void)
177			{
178			int i;
179	hedin	148	char data_byte;
180	hedin	150	for(i = 0; i < BUFFER; i++)
181	hedin	109	{
182	hedin	148	data_byte = global_serial_send[i];
183			if( data_byte == '\r')
184	hedin	150	i = (BUFFER - 1);
185	hedin	148	TXREG = data_byte;
186	hedin	139	while(TRMT==0) ;
187	hedin	148	DelayMs(10);
188	hedin	109	}
189	hedin	148	DelayMs(250);
190			DelayMs(250);
191	hedin	137	}
192
193			void serial_recieved(void)
194			{
195	hedin	148	char data_byte, saved_data[LCD_LENGTH];
196	hedin	137
197	hedin	148	data_byte = RCREG;
198	hedin	137
199	hedin	150	if (data_byte == '\n')
200			return;
201	hedin	151
202			if (global_serial_byte_counter == 0 && data_byte == '\r')
203			return;
204	hedin	150
205	hedin	148	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
206	hedin	150
207			if (data_byte == '\r')
208	hedin	137	{
209			global_recieve_done = 1;
210	hedin	150	//global_serial_byte_counter = 0;
211	hedin	155	global_serial_recieve_buffer[global_serial_byte_counter] = 0; //zero terminate
212
213			strcpy(global_message_buffer, global_serial_recieve_buffer);
214			global_message_buffer_length = global_serial_byte_counter;
215	hedin	137	}
216	hedin	109	else
217			{
218	hedin	137	global_serial_byte_counter++;
219	hedin	109	}
220
221	hedin	137	}
222	hedin	148
223			void timer1_interrupt(void)
224			{
225			TMR1H = 0xEF;
226			TMR1L = 0xFF;
227			global_time_counter++;
228			global_emergency_counter++;
229			RA1 = !RA1;
230			}
231
232	hedin	139	void update_lcd(void)
233			{
234	hedin	148	lcd_clear();
235			lcd_goto(0x00);
236	hedin	151
237			sprintf(global_lcd_buf, "%d", global_temp);
238			lcd_puts(global_lcd_buf);
239	hedin	148
240			}
241
242			void send_update(void)
243			{
244			sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
245			serial_send();
246			sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
247			lcd_goto(40);
248			lcd_puts(global_serial_send);
249			serial_send();
250			DelayMs(250);
251			global_sms_counter++;
252			}
253
254			void convertTemp()
255			{
256			short adVal;
257			adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
258			if( adVal >=840 )
259			global_temp = 100;
260			else
261			global_temp = (adVal / 8.3886);
262			}
263
264
265
266			void eeprom_writer(void)
267			{
268			char len,i;
269
270			len = strlen(cell_nr);
271			eeprom_write(0, (global_time_interval/60));
272			eeprom_write(1, global_sms_counter>>8);
273			eeprom_write(2, global_sms_counter);
274			eeprom_write(3, len);
275
276			for (i=0; i<len; ++i)
277	hedin	139	{
278	hedin	148	eeprom_write(i+4, cell_nr[i] );
279	hedin	139	}
280			}
281	hedin	148
282			void eeprom_reader(void)
283			{
284			char len,i;
285	hedin	109
286	hedin	148	global_time_interval = eeprom_read(0);
287			global_time_interval *= 60;
288			global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
289			len = eeprom_read(3);
290
291			for (i=0; i<len; ++i)
292			{
293			cell_nr[i] = eeprom_read(i+4);
294			}
295
296			cell_nr[i] = 0; //zero terminated!
297			}
298
299	hedin	150	void on_initial_recieve(void)
300			{
301			char imei[16];
302			char* ptr;
303			char i;
304
305			if (strstr(global_serial_recieve_buffer,"+WIND: 11") != 0)
306			{
307			global_modem_init = 1;
308
309			ptr = strstr(global_serial_recieve_buffer,"cgsn");
310			ptr +=4;
311			strncpy(imei, ptr,15);
312			imei[15] = 0;
313
314			global_imei_tversum = 0;
315			for (i=0; i<15; ++i)
316			{
317			global_imei_tversum += (imei[i] - '0');
318			}
319
320
321			reset_recieve_buffer();
322			}
323			}
324
325
326	hedin	148	void on_recieve(void)
327			{
328	hedin	150	char tmp[17];
329	hedin	151	char* ptr;
330			tmp[0]=0;
331
332	hedin	155	if (global_recieve_done == 0 \|\| global_message_buffer_length == 0)
333	hedin	150	return;
334	hedin	151
335
336	hedin	155	if (strstr(global_serial_recieve_buffer,"CMTI") != 0)
337	hedin	151	{
338	hedin	155	ptr = strstr(global_serial_recieve_buffer,",");
339			strcat(tmp,ptr+1);
340			sprintf(global_sms_recieve_number,"%s", tmp);
341			lcd_clear();
342			lcd_puts(global_sms_recieve_number);
343			sms_recieved();
344	hedin	150	}
345	hedin	155	else if (strstr(global_message_buffer,"CMTI") != 0)
346			{
347			ptr = strstr(global_message_buffer,",");
348			strcat(tmp,ptr+1);
349			lcd_clear();
350			lcd_puts(tmp);
351			}
352	hedin	148
353	hedin	155
354	hedin	150	reset_recieve_buffer();
355	hedin	148	}
356
357	hedin	155	void sms_recieved(void)
358			{
359			sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number);
360			serial_send();
361			}
362
363	hedin	82	void main()
364			{
365	hedin	148	////////////////////
366			// Running Init's //
367	hedin	109
368			// Running init for various components.
369	hedin	148	pic18_io_init();
370			rs232_init();
371	hedin	109	ad_init();
372			lcd_init(0);
373	hedin	137	interrupt_init();
374	hedin	139	sms_init();
375	hedin	148	//eeprom_init();
376			timer_init();
377			eeprom_reader();
378			///////////////
379			// Main loop //
380	hedin	150
381	hedin	151	DelayMs(50);
382			reset_recieve_buffer();
383	hedin	150
384	hedin	109	while(1)
385	hedin	100	{
386	hedin	148	// If there happends to be a critical state on the system, we send a sms.
387			if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING == 1 \|\| EMPTYTANK == 1) && global_emergency_counter >= 600 )
388			{
389			send_update();
390			global_emergency_counter = 0;
391			}
392			// Every X sec. a status sms is send.
393			if(global_time_counter >= 3600)
394			{
395			send_update();
396			global_time_counter = 0;
397			}
398			// To avoid buffer overrun.
399			if( global_emergency_counter > 7200 )
400			global_emergency_counter = 600;
401
402			// Checks if there has been recieved a config sms.
403			if(global_interval_changed )
404			{
405			eeprom_writer();
406			global_interval_changed = 0;
407			}
408	hedin	109	// Checking if A/D convertion is done, and save the data in global_Pot_??
409			if(GODONE==0)
410			{
411			global_Pot_Hi = ADRESH;
412			global_Pot_Lo = ADRESL;
413	hedin	148	convertTemp();
414	hedin	151	//update_lcd();
415	hedin	112	GODONE = 1;
416	hedin	109	}
417	hedin	151	// Handels the recieve sms'es.
418			on_recieve();
419	hedin	100	}
420	hedin	82	}