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	#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_lcd_buf[16];
28
29	unsigned short global_imei_tversum;
30
31	unsigned char cell_nr[15] = ""; // = "21681784";
32	bit global_modem_init = 0;
33
34	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
35	__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
36
37	void serial_recieved(void);
38	void serial_send(void);
39	void update_lcd(void);
40	void convertTemp(void);
41	void timer1_interrupt(void);
42	void on_recieve(void);
43	void on_initial_recieve(void);
44
45
46	void reset_recieve_buffer(void)
47	{
48	global_recieve_done = 0;
49	global_serial_byte_counter=0;
50	}
51
52
53	void ad_init(void) // Nicked from H7
54	{
55	// AD Conversion clock
56	ADCS0 = 0;
57	ADCS1 = 0;
58	ADCS2 = 0;
59
60	//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	//Result is right justified
73	ADFM=1;
74
75	//Fire up for A/D converter module
76	ADON=1;
77	}
78
79	void rs232_init(void)
80	{
81	SPEN = 0; // Serial Port Enable Bit... 0 = disabled
82	TRISC6 = 0;
83	TRISC7 = 1;
84
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	}
90
91	void interrupt_init(void)
92	{
93	// Assumes that all interrupts default is 0
94	PEIE = 1;
95	GIE = 1;
96	RCIE = 1; // Recieve interrupt enable.
97	IPEN = 0; // Nfo interrupt priority
98	TXIE = 0; // Serial interrupt enabled
99	TMR1IE = 1; // Enables timer 1
100	}
101
102	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	void pic18_io_init(void)
118	{
119	TRISA0 = 1; // analog input
120	TRISA1 = 0; // Output
121	TRISB1 = 1; // TRISB1-4 Digital input
122	TRISB2 = 1;
123	TRISB3 = 1;
124	TRISB4 = 1;
125	}
126
127	void sms_init(void)
128	{
129	int i;
130
131	reset_recieve_buffer();
132	sprintf(global_serial_send,"at+cgsn\r");
133	serial_send();
134	DelaySek(1);
135	while(!global_recieve_done) ;
136
137
138	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
139	serial_send();
140
141	while(global_modem_init == 0)
142	{
143	on_initial_recieve();
144	}
145	}
146
147
148	void interrupt interrupt_handler(void)
149	{
150	// Finds out what interrupt have been trigged, and starts the respective function.
151	if(RCIF == 1) // Serial recieve interrupt
152	{
153	serial_recieved();
154	RCIF = 0;
155	}
156
157	if(TMR1IF == 1) // timer1 interrupt trigger.
158	{
159	timer1_interrupt();
160	TMR1IF = 0;
161	}
162	}
163
164
165	void serial_send(void)
166	{
167	int i;
168	char data_byte;
169	for(i = 0; i < BUFFER; i++)
170	{
171	data_byte = global_serial_send[i];
172	if( data_byte == '\r')
173	i = (BUFFER - 1);
174	TXREG = data_byte;
175	while(TRMT==0) ;
176	DelayMs(10);
177	}
178	DelayMs(250);
179	DelayMs(250);
180	}
181
182	void serial_recieved(void)
183	{
184	char data_byte, saved_data[LCD_LENGTH];
185
186	data_byte = RCREG;
187
188	if (data_byte == '\n')
189	return;
190
191	if (global_serial_byte_counter == 0 && data_byte == '\r')
192	return;
193
194	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
195
196	if (data_byte == '\r')
197	{
198	global_recieve_done = 1;
199	//global_serial_byte_counter = 0;
200	global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
201	}
202	else
203	{
204	global_serial_byte_counter++;
205	}
206
207	}
208
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	void update_lcd(void)
219	{
220	lcd_clear();
221	lcd_goto(0x00);
222
223	sprintf(global_lcd_buf, "%d", global_temp);
224	lcd_puts(global_lcd_buf);
225
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	{
264	eeprom_write(i+4, cell_nr[i] );
265	}
266	}
267
268	void eeprom_reader(void)
269	{
270	char len,i;
271
272	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	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	void on_recieve(void)
313	{
314	char tmp[17];
315	char* ptr;
316	tmp[0]=0;
317
318	if (global_recieve_done == 0)
319	return;
320
321	lcd_goto(0x00);
322	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	lcd_puts(tmp);
332
333	}
334
335	reset_recieve_buffer();
336	}
337
338	void main()
339	{
340	////////////////////
341	// Running Init's //
342
343	// Running init for various components.
344	pic18_io_init();
345	rs232_init();
346	ad_init();
347	lcd_init(0);
348	interrupt_init();
349	sms_init();
350	//eeprom_init();
351	timer_init();
352	eeprom_reader();
353	///////////////
354	// Main loop //
355
356	DelayMs(50);
357	reset_recieve_buffer();
358
359	while(1)
360	{
361	// 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	// 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	convertTemp();
389	//update_lcd();
390	GODONE = 1;
391	}
392	// Handels the recieve sms'es.
393	on_recieve();
394	}
395	}