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	#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 short global_imei_tversum;
28
29	unsigned char cell_nr[15] = ""; // = "21681784";
30	bit global_modem_init = 0;
31
32	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
33	__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
34
35	void serial_recieved(void);
36	void serial_send(void);
37	void update_lcd(void);
38	void convertTemp(void);
39	void timer1_interrupt(void);
40	void on_recieve(void);
41	void on_initial_recieve(void);
42
43
44	void reset_recieve_buffer(void)
45	{
46	global_recieve_done = 0;
47	global_serial_byte_counter=0;
48	}
49
50
51	void ad_init(void) // Nicked from H7
52	{
53	// AD Conversion clock
54	ADCS0 = 0;
55	ADCS1 = 0;
56	ADCS2 = 0;
57
58	//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	//Result is right justified
71	ADFM=1;
72
73	//Fire up for A/D converter module
74	ADON=1;
75	}
76
77	void rs232_init(void)
78	{
79	SPEN = 0; // Serial Port Enable Bit... 0 = disabled
80	TRISC6 = 0;
81	TRISC7 = 1;
82
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	}
88
89	void interrupt_init(void)
90	{
91	// Assumes that all interrupts default is 0
92	PEIE = 1;
93	GIE = 1;
94	RCIE = 1; // Recieve interrupt enable.
95	IPEN = 0; // Nfo interrupt priority
96	TXIE = 0; // Serial interrupt enabled
97	TMR1IE = 1; // Enables timer 1
98	}
99
100	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	void pic18_io_init(void)
116	{
117	TRISA0 = 1; // analog input
118	TRISA1 = 0; // Output
119	TRISB1 = 1; // TRISB1-4 Digital input
120	TRISB2 = 1;
121	TRISB3 = 1;
122	TRISB4 = 1;
123	}
124
125	void sms_init(void)
126	{
127	int i;
128
129	reset_recieve_buffer();
130	sprintf(global_serial_send,"at+cgsn\r");
131	serial_send();
132	DelaySek(1);
133	while(!global_recieve_done) ;
134
135
136	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
137	serial_send();
138
139	while(global_modem_init == 0)
140	{
141	on_initial_recieve();
142	}
143	}
144
145
146	void interrupt interrupt_handler(void)
147	{
148	// Finds out what interrupt have been trigged, and starts the respective function.
149	if(RCIF == 1) // Serial recieve interrupt
150	{
151	serial_recieved();
152	RCIF = 0;
153	}
154
155	if(TMR1IF == 1) // timer1 interrupt trigger.
156	{
157	timer1_interrupt();
158	TMR1IF = 0;
159	}
160	}
161
162
163	void serial_send(void)
164	{
165	int i;
166	char data_byte;
167	for(i = 0; i < BUFFER; i++)
168	{
169	data_byte = global_serial_send[i];
170	if( data_byte == '\r')
171	i = (BUFFER - 1);
172	TXREG = data_byte;
173	while(TRMT==0) ;
174	DelayMs(10);
175	}
176	DelayMs(250);
177	DelayMs(250);
178	}
179
180	void serial_recieved(void)
181	{
182	char data_byte, saved_data[LCD_LENGTH];
183
184	data_byte = RCREG;
185
186	if (data_byte == '\n')
187	return;
188
189	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
190
191	if (data_byte == '\r')
192	{
193	global_recieve_done = 1;
194	//global_serial_byte_counter = 0;
195	global_serial_recieve_buffer[global_serial_byte_counter+1] = 0; //zero terminate
196	}
197	else
198	{
199	global_serial_byte_counter++;
200	}
201
202	}
203
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	void update_lcd(void)
214	{
215	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	{
257	eeprom_write(i+4, cell_nr[i] );
258	}
259	}
260
261	void eeprom_reader(void)
262	{
263	char len,i;
264
265	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	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	void on_recieve(void)
308	{
309	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
323	reset_recieve_buffer();
324	}
325
326	void main()
327	{
328	////////////////////
329	// Running Init's //
330
331	// Running init for various components.
332	pic18_io_init();
333	rs232_init();
334	ad_init();
335	lcd_init(0);
336	interrupt_init();
337	sms_init();
338	//eeprom_init();
339	timer_init();
340	eeprom_reader();
341	///////////////
342	// Main loop //
343
344
345	while(1)
346	{
347	// 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	// 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	convertTemp();
375	update_lcd();
376	GODONE = 1;
377	}
378
379	//if (global_recieve_done)
380	//{
381	on_recieve();
382	// global_recieve_done = 0;
383	// global_serial_byte_counter = 0;
384	//}
385	}
386	}