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	#include <pic18.h>
2	#include <stdio.h>
3	#include <htc.h>
4	#include <string.h>
5
6	#include "lcd.h"
7	#include "Delay.h"
8	// Delay.h is included inside lcd.c
9
10	#define LCD_LENGTH 16
11	#define LCD_ROWS 2
12	#define BUFFER 128
13	#define PWRFAIL RB1
14	#define FIREDET RB2
15	#define FEEDING RB3
16	#define EMPTYTANK RB4
17
18
19	unsigned char global_Pot_Hi, global_Pot_Lo;
20	unsigned char global_LCD_Buffer[LCD_ROWS][LCD_LENGTH];
21	unsigned char global_serial_send[BUFFER], global_serial_recieve_buffer[BUFFER];
22	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
27	unsigned char global_message_buffer[BUFFER];
28	unsigned char global_message_buffer_length;
29
30	unsigned char global_lcd_buf[16];
31
32	unsigned short global_imei_tversum;
33
34	unsigned char cell_nr[15] = ""; // = "21681784";
35	bit global_modem_init = 0;
36
37	unsigned char global_sms_recieve_number[3];
38
39	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
40	__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
41
42	void serial_recieved(void);
43	void serial_send(void);
44	void update_lcd(void);
45	void convertTemp(void);
46	void timer1_interrupt(void);
47	void on_recieve(void);
48	void on_initial_recieve(void);
49	void sms_recieved(void);
50
51
52	void reset_recieve_buffer(void)
53	{
54	global_recieve_done = 0;
55
56	global_serial_byte_counter=0;
57	global_serial_recieve_buffer[0] = 0;
58
59	global_message_buffer_length = 0;
60	global_message_buffer[0] = 0;
61	}
62
63
64	void ad_init(void) // Nicked from H7
65	{
66	// AD Conversion clock
67	ADCS0 = 0;
68	ADCS1 = 0;
69	ADCS2 = 0;
70
71	//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	//Result is right justified
84	ADFM=1;
85
86	//Fire up for A/D converter module
87	ADON=1;
88	}
89
90	void rs232_init(void)
91	{
92	SPEN = 0; // Serial Port Enable Bit... 0 = disabled
93	TRISC6 = 0;
94	TRISC7 = 1;
95
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	}
101
102	void interrupt_init(void)
103	{
104	// Assumes that all interrupts default is 0
105	PEIE = 1;
106	GIE = 1;
107	RCIE = 1; // Recieve interrupt enable.
108	IPEN = 0; // Nfo interrupt priority
109	TXIE = 0; // Serial interrupt enabled
110	TMR1IE = 1; // Enables timer 1
111	}
112
113	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	void pic18_io_init(void)
129	{
130	TRISA0 = 1; // analog input
131	TRISA1 = 0; // Output
132	TRISB1 = 1; // TRISB1-4 Digital input
133	TRISB2 = 1;
134	TRISB3 = 1;
135	TRISB4 = 1;
136	}
137
138	void sms_init(void)
139	{
140	int i;
141
142	reset_recieve_buffer();
143	sprintf(global_serial_send,"at+cgsn\r");
144	serial_send();
145	DelaySek(1);
146	while(!global_recieve_done) ;
147
148
149	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
150	serial_send();
151
152	while(global_modem_init == 0)
153	{
154	on_initial_recieve();
155	}
156	}
157
158
159	void interrupt interrupt_handler(void)
160	{
161	// Finds out what interrupt have been trigged, and starts the respective function.
162	if(RCIF == 1) // Serial recieve interrupt
163	{
164	serial_recieved();
165	RCIF = 0;
166	}
167
168	if(TMR1IF == 1) // timer1 interrupt trigger.
169	{
170	timer1_interrupt();
171	TMR1IF = 0;
172	}
173	}
174
175
176	void serial_send(void)
177	{
178	int i;
179	char data_byte;
180	for(i = 0; i < BUFFER; i++)
181	{
182	data_byte = global_serial_send[i];
183	if( data_byte == '\r')
184	i = (BUFFER - 1);
185	TXREG = data_byte;
186	while(TRMT==0) ;
187	DelayMs(10);
188	}
189	DelayMs(250);
190	DelayMs(250);
191	}
192
193	void serial_recieved(void)
194	{
195	char data_byte, saved_data[LCD_LENGTH];
196
197	data_byte = RCREG;
198
199	if (data_byte == '\n')
200	return;
201
202	if (global_serial_byte_counter == 0 && data_byte == '\r')
203	return;
204
205	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
206
207	if (data_byte == '\r')
208	{
209	global_recieve_done = 1;
210	//global_serial_byte_counter = 0;
211	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	}
216	else
217	{
218	global_serial_byte_counter++;
219	}
220
221	}
222
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	void update_lcd(void)
233	{
234	lcd_clear();
235	lcd_goto(0x00);
236
237	sprintf(global_lcd_buf, "%d", global_temp);
238	lcd_puts(global_lcd_buf);
239
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	{
278	eeprom_write(i+4, cell_nr[i] );
279	}
280	}
281
282	void eeprom_reader(void)
283	{
284	char len,i;
285
286	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	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	void on_recieve(void)
327	{
328	char tmp[17];
329	char* ptr;
330	tmp[0]=0;
331
332	if (global_recieve_done == 0 \|\| global_message_buffer_length == 0)
333	return;
334
335
336	if (strstr(global_serial_recieve_buffer,"CMTI") != 0)
337	{
338	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	}
345	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
353
354	reset_recieve_buffer();
355	}
356
357	void sms_recieved(void)
358	{
359	sprintf(global_serial_send, "AT+CMGR=%s\r", global_sms_recieve_number);
360	serial_send();
361	}
362
363	void main()
364	{
365	////////////////////
366	// Running Init's //
367
368	// Running init for various components.
369	pic18_io_init();
370	rs232_init();
371	ad_init();
372	lcd_init(0);
373	interrupt_init();
374	sms_init();
375	//eeprom_init();
376	timer_init();
377	eeprom_reader();
378	///////////////
379	// Main loop //
380
381	DelayMs(50);
382	reset_recieve_buffer();
383
384	while(1)
385	{
386	// 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	// 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	convertTemp();
414	//update_lcd();
415	GODONE = 1;
416	}
417	// Handels the recieve sms'es.
418	on_recieve();
419	}
420	}