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 SEND_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[SEND_BUFFER], global_serial_recieve_buffer[SEND_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 cell_nr[15] = ""; // = "21681784";


__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);

// Nicked from H7
void ad_init(void)
{
        // 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;

        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();
        DelaySek(30);
        
        update_lcd();
        DelaySek(5);
}


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 < SEND_BUFFER; i++)
        {
                data_byte = global_serial_send[i];
                if( data_byte == '\r')
                        i = (SEND_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;
        
        global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
        if(data_byte == '\r')
        {
                global_recieve_done = 1;
                global_serial_byte_counter = 0;
        }       
        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_recieve(void)
{
        
}

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 //
send_update();
        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;
                }
        }
}
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 SEND_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[SEND_BUFFER], global_serial_recieve_buffer[SEND_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 cell_nr[15] = ""; // = "21681784";
28
29
30	__EEPROM_DATA( 60, 0, 1, 8, '2', '1', '6', '8');
31	__EEPROM_DATA( '1', '7', '8', '4',0,0,0,0);
32
33	void serial_recieved(void);
34	void serial_send(void);
35	void update_lcd(void);
36	void convertTemp(void);
37	void timer1_interrupt(void);
38
39	// Nicked from H7
40	void ad_init(void)
41	{
42	// AD Conversion clock
43	ADCS0 = 0;
44	ADCS1 = 0;
45	ADCS2 = 0;
46
47	//Select AN0/RA0 for AD source
48	// In this (000) setup, it's only RA0/AN0 that does ad convertion.
49	CHS0=0;
50	CHS1=0;
51	CHS2=0;
52
53	//Only AN0 is selected for AD and with Vdd/Vss as limits
54	PCFG0=0;
55	PCFG1=1;
56	PCFG2=1;
57	PCFG3=1;
58
59	//Result is right justified
60	ADFM=1;
61
62	//Fire up for A/D converter module
63	ADON=1;
64	}
65
66	void rs232_init(void)
67	{
68	SPEN = 0; // Serial Port Enable Bit... 0 = disabled
69	TRISC6 = 0;
70	TRISC7 = 1;
71
72	SPBRG = 207; // 1200 baud rate... 25 = 9600
73	// x = (Fosc / (16*[baud rate]) )-1
74	TXSTA = 0x24; // Enables BRGH and TXEN inthe TXSTA register
75	RCSTA = 0x90; // 0x90 enables SPEN and CREN in the RCSTA register
76	}
77
78	void interrupt_init(void)
79	{
80	// Assumes that all interrupts default is 0
81	PEIE = 1;
82	GIE = 1;
83	RCIE = 1; // Recieve interrupt enable.
84	IPEN = 0; // Nfo interrupt priority
85	TXIE = 0; // Serial interrupt enabled
86	TMR1IE = 1; // Enables timer 1
87	}
88
89	void timer_init(void)
90	{
91	TMR1CS = 1; //use external clock
92
93	T1CKPS1 = 1; //1:8 prescale
94	T1CKPS0 = 1;
95
96	TMR1H = 0xEF;
97	TMR1L = 0xFF;
98
99	T1OSCEN = 1; //enable oscillator circuit
100	RD16 = 0; //normal 8 bit writes
101	TMR1ON = 1;
102	}
103
104	void pic18_io_init(void)
105	{
106	TRISA0 = 1; // analog input
107	TRISA1 = 0; // Output
108	TRISB1 = 1; // TRISB1-4 Digital input
109	TRISB2 = 1;
110	TRISB3 = 1;
111	TRISB4 = 1;
112	}
113
114	void sms_init(void)
115	{
116	int i;
117
118	sprintf(global_serial_send,"at+cgsn\r");
119	serial_send();
120	DelaySek(1);
121	while(!global_recieve_done) ;
122
123
124	sprintf(global_serial_send,"%s", "at+cpin=8043\r");
125	serial_send();
126	DelaySek(30);
127
128	update_lcd();
129	DelaySek(5);
130	}
131
132
133	void interrupt interrupt_handler(void)
134	{
135	// Finds out what interrupt have been trigged, and starts the respective function.
136	if(RCIF == 1) // Serial recieve interrupt
137	{
138	serial_recieved();
139	RCIF = 0;
140	}
141
142	if(TMR1IF == 1) // timer1 interrupt trigger.
143	{
144	timer1_interrupt();
145	TMR1IF = 0;
146	}
147	}
148
149
150	void serial_send(void)
151	{
152	int i;
153	char data_byte;
154	for(i = 0; i < SEND_BUFFER; i++)
155	{
156	data_byte = global_serial_send[i];
157	if( data_byte == '\r')
158	i = (SEND_BUFFER - 1);
159	TXREG = data_byte;
160	while(TRMT==0) ;
161	DelayMs(10);
162	}
163	DelayMs(250);
164	DelayMs(250);
165	}
166
167	void serial_recieved(void)
168	{
169	char data_byte, saved_data[LCD_LENGTH];
170
171	data_byte = RCREG;
172
173	global_serial_recieve_buffer[global_serial_byte_counter] = data_byte;
174	if(data_byte == '\r')
175	{
176	global_recieve_done = 1;
177	global_serial_byte_counter = 0;
178	}
179	else
180	{
181	global_serial_byte_counter++;
182	}
183
184	}
185
186	void timer1_interrupt(void)
187	{
188	TMR1H = 0xEF;
189	TMR1L = 0xFF;
190	global_time_counter++;
191	global_emergency_counter++;
192	RA1 = !RA1;
193	}
194
195	void update_lcd(void)
196	{
197	lcd_clear();
198	lcd_goto(0x00);
199	lcd_puts(global_temp);
200
201	}
202
203	void send_update(void)
204	{
205	sprintf(global_serial_send, "at+cmgs=\"%s\"\r", cell_nr);
206	serial_send();
207	sprintf(global_serial_send, "%d:%d:%d:%d:%d:%d%c", global_sms_counter, global_temp, FIREDET, EMPTYTANK, FEEDING, PWRFAIL, 0x1A);
208	lcd_goto(40);
209	lcd_puts(global_serial_send);
210	serial_send();
211	DelayMs(250);
212	global_sms_counter++;
213	}
214
215	void convertTemp()
216	{
217	short adVal;
218	adVal = (global_Pot_Hi << 8) \| global_Pot_Lo;
219	if( adVal >=840 )
220	global_temp = 100;
221	else
222	global_temp = (adVal / 8.3886);
223	}
224
225
226
227	void eeprom_writer(void)
228	{
229	char len,i;
230
231	len = strlen(cell_nr);
232	eeprom_write(0, (global_time_interval/60));
233	eeprom_write(1, global_sms_counter>>8);
234	eeprom_write(2, global_sms_counter);
235	eeprom_write(3, len);
236
237	for (i=0; i<len; ++i)
238	{
239	eeprom_write(i+4, cell_nr[i] );
240	}
241	}
242
243	void eeprom_reader(void)
244	{
245	char len,i;
246
247	global_time_interval = eeprom_read(0);
248	global_time_interval *= 60;
249	global_sms_counter = (eeprom_read(1)<<8) \| eeprom_read(2);
250	len = eeprom_read(3);
251
252	for (i=0; i<len; ++i)
253	{
254	cell_nr[i] = eeprom_read(i+4);
255	}
256
257	cell_nr[i] = 0; //zero terminated!
258	}
259
260	void on_recieve(void)
261	{
262
263	}
264
265	void main()
266	{
267	////////////////////
268	// Running Init's //
269
270	// Running init for various components.
271	pic18_io_init();
272	rs232_init();
273	ad_init();
274	lcd_init(0);
275	interrupt_init();
276	sms_init();
277	//eeprom_init();
278	timer_init();
279	eeprom_reader();
280	///////////////
281	// Main loop //
282	send_update();
283	while(1)
284	{
285	// If there happends to be a critical state on the system, we send a sms.
286	if( (global_temp >= 90 \|\| PWRFAIL == 1 \|\| FIREDET == 0 \|\| FEEDING == 1 \|\| EMPTYTANK == 1) && global_emergency_counter >= 600 )
287	{
288	send_update();
289	global_emergency_counter = 0;
290	}
291	// Every X sec. a status sms is send.
292	if(global_time_counter >= 3600)
293	{
294	send_update();
295	global_time_counter = 0;
296	}
297	// To avoid buffer overrun.
298	if( global_emergency_counter > 7200 )
299	global_emergency_counter = 600;
300
301	// Checks if there has been recieved a config sms.
302	if(global_interval_changed )
303	{
304	eeprom_writer();
305	global_interval_changed = 0;
306	}
307	// Checking if A/D convertion is done, and save the data in global_Pot_??
308	if(GODONE==0)
309	{
310	global_Pot_Hi = ADRESH;
311	global_Pot_Lo = ADRESL;
312	convertTemp();
313	update_lcd();
314	GODONE = 1;
315	}
316	}
317	}