trunk/PIC/main.c

/* H7 -projekt opgave */

///////////////////////////////////////////////////////////////////////
//Includes
#include <pic18.h>
#include <string.h>

#include "delay.h"
#include "i2c.h"
#include "lcd.h"

/////////////////////////////////////////////////////////////////////
//Defines
#define TC74 0x9A /* I2C TC74 IC */

#define SLIP_END 192
#define SLIP_ESC 219
#define SLIP_ESCAPED_END 220
#define SLIP_ESCAPED_ESC 221

#define BUFFERLEN 16

//////////////////////////////////////////////////////////////////
// Enumerations

enum SlipState{
        SlipNormal,
        SlipEscaped,
        SlipError,
        SlipStopped
};

enum BaudRates{
        Baud1200,
        Baud2400,
        Baud4800,
        Baud9600,
        Baud19200
};

enum Commands{
        CmdRead,
        CmdWrite,
        CmdAck,
        CmdNAck
};

enum Targets {
        TLed3, //0
        TLed4,
        TLed5,
        TSwitch2,
        TSwitch3,
        TPotmeter,
        TTemp,
        TBaud = 10
};

//////////////////////////////////////////////////////////////////
//Globale data
// Alle globale variabler bruger "global_" som prefix

unsigned char global_comm_buffer[BUFFERLEN]; 
unsigned char global_comm_length;

bit global_comm_ready;
bit global_comm_error;

unsigned char global_comm_slipstate;
unsigned char global_comm_currentrate;

unsigned char global_lcd_buffer[20];
unsigned char global_lcd_index;


bit global_led_0;
bit global_led_1;
bit global_led_2;

bit global_reset_baudrate;

char global_temp;
unsigned char global_potmeter_hi;
unsigned char global_potmeter_lo;

///////////////////////////////////////////////////////////////////
// Interrupt funktioner

void recieve_interrupt(void)
{
        unsigned char data = RCREG;     
        
        switch (global_comm_slipstate)
        {               
                case SlipNormal:
                        if (data == SLIP_END)
                        {
                                global_comm_ready = 1;
                                global_comm_slipstate = SlipStopped;
                        }
                        else if (data == SLIP_ESC)
                        {
                                global_comm_slipstate = SlipEscaped;
                        }
                        else
                                global_comm_buffer[ global_comm_length++ ] = data; 
                        break;
                        
                case SlipEscaped:
                        if (data == SLIP_ESCAPED_ESC)
                        {
                                global_comm_buffer[ global_comm_length++ ] = SLIP_ESC;
                                global_comm_slipstate = SlipNormal;
                        }
                        else if (data ==SLIP_ESCAPED_END)
                        {
                                global_comm_buffer[ global_comm_length++ ] = SLIP_END;
                                global_comm_slipstate = SlipNormal;
                        }
                        else
                        {
                                global_comm_slipstate = SlipError;
                        }
                case SlipError:
                        if (data == SLIP_END)
                        {
                                global_comm_error = 1;
                                global_comm_slipstate = SlipStopped;
                                global_comm_ready = 1;
                        }
                case SlipStopped: //vi var ikke klar til at modtage data
                        global_comm_error = 1;
        }
}

/*
void transmit_interrupt(void)
{
        RB2 = !RB2;
}
*/

void interrupt interrupt_handler(void)
{
        if (RCIF == 1)
        {
                recieve_interrupt();
                RCIF = 0;
        }
        /*if (TXIF == 1)
        {
                transmit_interrupt();
                TXIF = 0;
        }
        */
}

///////////////////////////////////////////////////////////////////
// Slip funktioner

void slip_reset(void)
{
        global_comm_error = 0;
        global_comm_slipstate = SlipNormal;
        global_comm_ready = 0;
        global_comm_length = 0;
        memset(global_comm_buffer, 0, BUFFERLEN);
}

void slip_highlevel_protocol(void)
{
        unsigned char cmd,target,data;
        
        cmd = global_comm_buffer[0] & 0x0F;
        target = ( global_comm_buffer[0] >> 4 ) & 0x0F;
        data = global_comm_buffer[1];

        if (cmd == CmdRead || cmd == CmdWrite)
        {
                //s�t standart l�ngde - da l�ngden kun varierer ved l�sning af potmeter
                if (cmd == CmdRead)
                        global_comm_length = 2;
                else
                        global_comm_length = 1;
                        
                switch(target)
                {
                        case TLed3:
                                if (cmd == CmdRead)
                                        global_comm_buffer[1] = global_led_0;
                                else
                                        global_led_0 = data;
                                break;
                        case TLed4:
                                if(cmd == CmdRead)
                                        global_comm_buffer[1] = global_led_1;
                                else
                                        global_led_1 = data;
                                break;
                        case TLed5:
                                if (cmd == CmdRead)
                                        global_comm_buffer[1] = global_led_2;
                                else
                                        global_led_2 = data;
                                break;
                        case TSwitch2:
                                if (cmd == CmdRead)
                                        global_comm_buffer[1] = RA4;
                                else
                                        global_comm_error = 1;
                                break;
                        case TSwitch3:
                                if (cmd == CmdRead)
                                        global_comm_buffer[1] = RB0;
                                else
                                        global_comm_error = 1;
                                break;
                        case TPotmeter:
                                if (cmd == CmdRead)
                                {
                                        global_comm_buffer[1] = global_potmeter_hi;
                                        global_comm_buffer[2] = global_potmeter_lo;
                                        global_comm_length = 3;
                                }
                                else
                                        global_comm_error = 1;
                                break;
                        case TTemp:
                                if (cmd == CmdRead)
                                        global_comm_buffer[1] = global_temp;
                                else
                                        global_comm_error = 1;
                                break;
                        case TBaud:
                                if (cmd == CmdRead)
                                        global_comm_error = 1;
                                else
                                {
                                        //we can only handle 1200,2400,9600,19200
                                        if (data == 0 || data == 1 || data == 3 || data == 4)
                                                global_reset_baudrate = 1;
                                        else
                                                global_comm_error = 1;
                                }
                                break;
                        default:
                                global_comm_error = 1;
                                
                }
        }
        else //kommandoen var noget andet end read/write
        {
                global_comm_error = 1;
        }
        
        
        if (global_comm_error == 1) //we saw an error
        {
                global_comm_buffer[0] = CmdNAck | target<<4;
                global_comm_length = 1;
        }
        else
        {
                global_comm_buffer[0] = CmdAck | target<<4; //skriv acknowledge feltet
        }
}

void slip_send_byte(char data)
{
        TXREG = data;
        while (TRMT==0) ;
        DelayUs(20);
}

void slip_send_response(void)
{
        int i;
        for (i=0; i< global_comm_length;i++)
        {
                if ( global_comm_buffer[i] == SLIP_ESC)
                {
                        slip_send_byte(SLIP_ESC);
                        slip_send_byte(SLIP_ESCAPED_ESC);
                }
                else if (global_comm_buffer[i] == SLIP_END)
                {
                        slip_send_byte(SLIP_ESC);
                        slip_send_byte(SLIP_ESCAPED_END);
                }
                else
                {
                        slip_send_byte( global_comm_buffer[i]);
                }
        }
        
        slip_send_byte(SLIP_END);
}

///////////////////////////////////////////////////////////////////
// Gennerelle funktioner

void interrupt_init(void)
{
        TXIE = 0; //Disable AUX TX interrupt - testes med TXIF;
        RCIE = 1; //Enable AUX Recieve interrupt - testes med RCIF;

        IPEN = 0; // IPEN=Interrupt Priority ENable bit - her bruges ingen prioritet
        
        PEIE = 1; // PEIE = PEriphal Interrupt Enable
                
        TXIF = 0; //nulstil intterupt flag
        RCIF = 0;

        GIE = 1; //Global interrupt enable bit
}

void serial_init(void)
{
        SPEN = 0; //Make sure serial port is disabled
        
        // snupset fra  Kim H Pedersens serialmain.c 
        // Set Port C bit 6 output (TxD) and bit 7 input (RxD)
    TRISC6 = 0;
    TRISC7 = 1;

    SPBRG = 25;         //      x = Fosc/(16 * Baud Rate) - 1
                                        //      x = 4000000/(16 * 9600) - 1
                                        //      x = 25.0417 ~ 25
                                        //      Baud Rate = Fosc/(16 * (x+1))
                                        //      Baud Rate = 4000000/(16 * (25+1))
                                        //      Baud Rate = 9615
    TXSTA = 0x24;       //      TXSTA7 = 0      Don't care in asynchronous
                                        //      TXSTA6 = 0      8-bit transmission
                                        //      TXSTA5 = 1      Transmit enabled
                                        //      TXSTA4 = 0      Asynchronous mode
                                        //      TXSTA3 = 0      Unimplemented
                                        //      TXSTA2 = 1      High speed
                                        //      TXSTA1 = 0      TSR empty
                                        //      TXSTA0 = 0      9th bit                                         */
    RCSTA = 0x90;       //      RCSTA7 = 0      Serial port disabled
                                        //      RCSTA6 = 0      8-bit reception
                                        //      RCSTA5 = 0      Don't care in asynchronous
                                        //      RCSTA4 = 1      Receiver enabled
                                        //      RCSTA3 = 0      Don't care (8-bit operation)
                                        //      RCSTA2 = 0      No framing error
                                        //      RCSTA1 = 0      Overrun error bit
                                        //      RCSTA0 = 0      9th bit                                         */

        //config completed
        SPEN = 1; //Enable Serial port
}

/* basic I/O ports */
void io_init(void)
{
        TRISB3 = 0; //LED ports = output
        TRISB2 = 0;
        TRISB1 = 0;
        
        TRISB0 = 1; //Switch porte = input
        TRISA0 = 1;
}

void ad_init(void)
{
        // AD Conversion clock
        ADCS0 = 0;
        ADCS1 = 0;
        ADCS2 = 0;

        //Select AN0/RA0 for AD source
        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 i2c_init(void)
{
// I2C_MODULE h�rer hjemme i i2c.h
#ifdef I2C_MODULE
    SSPMode(MASTER_MODE);
    SSPEN = 1;
    CKP = 1;
#else
    SCL_DIR = I2C_OUTPUT;
    SDA_DIR = I2C_OUTPUT;
    SDA = 0;
    SCL = 0;
#endif
}


char ReadTemp(void)
{
        char temp;
        i2c_WriteTo(TC74); //write to, will automatically send a start condition
        i2c_PutByte(0x00); //tell TC74 we want to read
        i2c_ReadFrom(TC74);
        temp = i2c_GetByte(I2C_LAST);
        i2c_Stop(); //assert a stop condition on SDA & SCL
        return temp;
}


///////////////////////////////////////////////////////////////////
//Main


void main(void) 
{
        lcd_init(0); //init in 4-bit mode
        i2c_init();
        serial_init(); //9600 8N1
        ad_init();
        io_init();
        interrupt_init();
        

        slip_reset(); //take SLIP FSM into normal state
        global_comm_currentrate = Baud9600; //default baudrate = 9600
        global_reset_baudrate = 0;
        
//      initialisation completed and we are ready to recieve commands - enable serial reception
        CREN = 1;
        
        while (1)
        {
                if (global_comm_ready == 1)
                {
                        slip_highlevel_protocol(); //parse the slip frame recieved & generate response
                        slip_send_response();
                        slip_reset();
                }
                
                if ( global_reset_baudrate == 1)
                {
                }
                
                RB1 = global_led_0;
                RB2 = global_led_1;
                RB3 = global_led_2;
                
                global_temp = ReadTemp();
                
                //potmeter
                if (GODONE ==0 )//hvis A/D-conv er f�rdig
                {
                        
                        global_potmeter_hi = ADRESH;//gem AD resultat
                        global_potmeter_lo = ADRESL; 
                        GODONE = 1; //start ny konverering
                }
        }
}
1	torben	2	/* H7 -projekt opgave */
2	torben	10
3			///////////////////////////////////////////////////////////////////////
4			//Includes
5	torben	2	#include <pic18.h>
6	torben	17	#include <string.h>
7
8	torben	2	#include "delay.h"
9			#include "i2c.h"
10			#include "lcd.h"
11
12	torben	10	/////////////////////////////////////////////////////////////////////
13			//Defines
14	torben	2	#define TC74 0x9A /* I2C TC74 IC */
15
16	torben	17	#define SLIP_END 192
17			#define SLIP_ESC 219
18			#define SLIP_ESCAPED_END 220
19			#define SLIP_ESCAPED_ESC 221
20	torben	10
21	torben	17	#define BUFFERLEN 16
22
23			//////////////////////////////////////////////////////////////////
24			// Enumerations
25
26	torben	10	enum SlipState{
27			SlipNormal,
28			SlipEscaped,
29			SlipError,
30			SlipStopped
31			};
32
33	torben	17	enum BaudRates{
34			Baud1200,
35			Baud2400,
36			Baud4800,
37			Baud9600,
38			Baud19200
39			};
40
41			enum Commands{
42			CmdRead,
43			CmdWrite,
44			CmdAck,
45			CmdNAck
46			};
47
48			enum Targets {
49			TLed3, //0
50			TLed4,
51			TLed5,
52			TSwitch2,
53			TSwitch3,
54			TPotmeter,
55			TTemp,
56			TBaud = 10
57			};
58
59	torben	10	//////////////////////////////////////////////////////////////////
60			//Globale data
61			// Alle globale variabler bruger "global_" som prefix
62	torben	17
63			unsigned char global_comm_buffer[BUFFERLEN];
64	torben	10	unsigned char global_comm_length;
65	torben	17
66	torben	10	bit global_comm_ready;
67	torben	17	bit global_comm_error;
68	torben	10
69	torben	17	unsigned char global_comm_slipstate;
70			unsigned char global_comm_currentrate;
71	torben	10
72	torben	17	unsigned char global_lcd_buffer[20];
73			unsigned char global_lcd_index;
74	torben	10
75
76	torben	17	bit global_led_0;
77			bit global_led_1;
78			bit global_led_2;
79
80			bit global_reset_baudrate;
81
82			char global_temp;
83			unsigned char global_potmeter_hi;
84			unsigned char global_potmeter_lo;
85
86	torben	10	///////////////////////////////////////////////////////////////////
87			// Interrupt funktioner
88
89			void recieve_interrupt(void)
90			{
91	torben	17	unsigned char data = RCREG;
92
93			switch (global_comm_slipstate)
94			{
95			case SlipNormal:
96			if (data == SLIP_END)
97			{
98			global_comm_ready = 1;
99			global_comm_slipstate = SlipStopped;
100			}
101			else if (data == SLIP_ESC)
102			{
103			global_comm_slipstate = SlipEscaped;
104			}
105			else
106			global_comm_buffer[ global_comm_length++ ] = data;
107			break;
108
109			case SlipEscaped:
110			if (data == SLIP_ESCAPED_ESC)
111			{
112			global_comm_buffer[ global_comm_length++ ] = SLIP_ESC;
113			global_comm_slipstate = SlipNormal;
114			}
115			else if (data ==SLIP_ESCAPED_END)
116			{
117			global_comm_buffer[ global_comm_length++ ] = SLIP_END;
118			global_comm_slipstate = SlipNormal;
119			}
120			else
121			{
122			global_comm_slipstate = SlipError;
123			}
124			case SlipError:
125			if (data == SLIP_END)
126			{
127			global_comm_error = 1;
128			global_comm_slipstate = SlipStopped;
129			global_comm_ready = 1;
130			}
131			case SlipStopped: //vi var ikke klar til at modtage data
132			global_comm_error = 1;
133			}
134	torben	10	}
135
136	torben	17	/*
137	torben	10	void transmit_interrupt(void)
138			{
139	torben	17	RB2 = !RB2;
140	torben	10	}
141	torben	17	*/
142	torben	10
143			void interrupt interrupt_handler(void)
144			{
145			if (RCIF == 1)
146			{
147			recieve_interrupt();
148			RCIF = 0;
149			}
150	torben	17	/*if (TXIF == 1)
151	torben	10	{
152			transmit_interrupt();
153			TXIF = 0;
154			}
155	torben	17	*/
156	torben	10	}
157
158			///////////////////////////////////////////////////////////////////
159	torben	17	// Slip funktioner
160	torben	10
161	torben	17	void slip_reset(void)
162			{
163			global_comm_error = 0;
164			global_comm_slipstate = SlipNormal;
165			global_comm_ready = 0;
166			global_comm_length = 0;
167			memset(global_comm_buffer, 0, BUFFERLEN);
168			}
169
170			void slip_highlevel_protocol(void)
171			{
172			unsigned char cmd,target,data;
173
174			cmd = global_comm_buffer[0] & 0x0F;
175			target = ( global_comm_buffer[0] >> 4 ) & 0x0F;
176			data = global_comm_buffer[1];
177
178			if (cmd == CmdRead \|\| cmd == CmdWrite)
179			{
180			//s�t standart l�ngde - da l�ngden kun varierer ved l�sning af potmeter
181			if (cmd == CmdRead)
182			global_comm_length = 2;
183			else
184			global_comm_length = 1;
185
186			switch(target)
187			{
188			case TLed3:
189			if (cmd == CmdRead)
190			global_comm_buffer[1] = global_led_0;
191			else
192			global_led_0 = data;
193			break;
194			case TLed4:
195			if(cmd == CmdRead)
196			global_comm_buffer[1] = global_led_1;
197			else
198			global_led_1 = data;
199			break;
200			case TLed5:
201			if (cmd == CmdRead)
202			global_comm_buffer[1] = global_led_2;
203			else
204			global_led_2 = data;
205			break;
206			case TSwitch2:
207			if (cmd == CmdRead)
208			global_comm_buffer[1] = RA4;
209			else
210			global_comm_error = 1;
211			break;
212			case TSwitch3:
213			if (cmd == CmdRead)
214			global_comm_buffer[1] = RB0;
215			else
216			global_comm_error = 1;
217			break;
218			case TPotmeter:
219			if (cmd == CmdRead)
220			{
221			global_comm_buffer[1] = global_potmeter_hi;
222			global_comm_buffer[2] = global_potmeter_lo;
223			global_comm_length = 3;
224			}
225			else
226			global_comm_error = 1;
227			break;
228			case TTemp:
229			if (cmd == CmdRead)
230			global_comm_buffer[1] = global_temp;
231			else
232			global_comm_error = 1;
233			break;
234			case TBaud:
235			if (cmd == CmdRead)
236			global_comm_error = 1;
237			else
238			{
239			//we can only handle 1200,2400,9600,19200
240			if (data == 0 \|\| data == 1 \|\| data == 3 \|\| data == 4)
241			global_reset_baudrate = 1;
242			else
243			global_comm_error = 1;
244			}
245			break;
246			default:
247			global_comm_error = 1;
248
249			}
250			}
251			else //kommandoen var noget andet end read/write
252			{
253			global_comm_error = 1;
254			}
255
256
257			if (global_comm_error == 1) //we saw an error
258			{
259			global_comm_buffer[0] = CmdNAck \| target<<4;
260			global_comm_length = 1;
261			}
262			else
263			{
264			global_comm_buffer[0] = CmdAck \| target<<4; //skriv acknowledge feltet
265			}
266			}
267
268			void slip_send_byte(char data)
269			{
270			TXREG = data;
271			while (TRMT==0) ;
272			DelayUs(20);
273			}
274
275			void slip_send_response(void)
276			{
277			int i;
278			for (i=0; i< global_comm_length;i++)
279			{
280			if ( global_comm_buffer[i] == SLIP_ESC)
281			{
282			slip_send_byte(SLIP_ESC);
283			slip_send_byte(SLIP_ESCAPED_ESC);
284			}
285			else if (global_comm_buffer[i] == SLIP_END)
286			{
287			slip_send_byte(SLIP_ESC);
288			slip_send_byte(SLIP_ESCAPED_END);
289			}
290			else
291			{
292			slip_send_byte( global_comm_buffer[i]);
293			}
294			}
295
296			slip_send_byte(SLIP_END);
297			}
298
299			///////////////////////////////////////////////////////////////////
300			// Gennerelle funktioner
301
302	torben	10	void interrupt_init(void)
303			{
304	torben	17	TXIE = 0; //Disable AUX TX interrupt - testes med TXIF;
305	torben	10	RCIE = 1; //Enable AUX Recieve interrupt - testes med RCIF;
306
307			IPEN = 0; // IPEN=Interrupt Priority ENable bit - her bruges ingen prioritet
308
309			PEIE = 1; // PEIE = PEriphal Interrupt Enable
310
311			TXIF = 0; //nulstil intterupt flag
312			RCIF = 0;
313
314			GIE = 1; //Global interrupt enable bit
315			}
316
317			void serial_init(void)
318			{
319			SPEN = 0; //Make sure serial port is disabled
320
321			// snupset fra Kim H Pedersens serialmain.c
322			// Set Port C bit 6 output (TxD) and bit 7 input (RxD)
323			TRISC6 = 0;
324			TRISC7 = 1;
325
326			SPBRG = 25; // x = Fosc/(16 * Baud Rate) - 1
327			// x = 4000000/(16 * 9600) - 1
328			// x = 25.0417 ~ 25
329			// Baud Rate = Fosc/(16 * (x+1))
330			// Baud Rate = 4000000/(16 * (25+1))
331			// Baud Rate = 9615
332			TXSTA = 0x24; // TXSTA7 = 0 Don't care in asynchronous
333			// TXSTA6 = 0 8-bit transmission
334			// TXSTA5 = 1 Transmit enabled
335			// TXSTA4 = 0 Asynchronous mode
336			// TXSTA3 = 0 Unimplemented
337			// TXSTA2 = 1 High speed
338			// TXSTA1 = 0 TSR empty
339			// TXSTA0 = 0 9th bit */
340			RCSTA = 0x90; // RCSTA7 = 0 Serial port disabled
341			// RCSTA6 = 0 8-bit reception
342			// RCSTA5 = 0 Don't care in asynchronous
343			// RCSTA4 = 1 Receiver enabled
344			// RCSTA3 = 0 Don't care (8-bit operation)
345			// RCSTA2 = 0 No framing error
346			// RCSTA1 = 0 Overrun error bit
347			// RCSTA0 = 0 9th bit */
348	torben	17
349	torben	10	//config completed
350			SPEN = 1; //Enable Serial port
351			}
352
353	torben	17	/* basic I/O ports */
354			void io_init(void)
355			{
356			TRISB3 = 0; //LED ports = output
357			TRISB2 = 0;
358			TRISB1 = 0;
359
360			TRISB0 = 1; //Switch porte = input
361			TRISA0 = 1;
362			}
363	torben	10
364	torben	17	void ad_init(void)
365			{
366			// AD Conversion clock
367			ADCS0 = 0;
368			ADCS1 = 0;
369			ADCS2 = 0;
370	torben	10
371	torben	17	//Select AN0/RA0 for AD source
372			CHS0=0;
373			CHS1=0;
374			CHS2=0;
375
376			//Only AN0 is selected for AD and with Vdd/Vss as limits
377			PCFG0=0;
378			PCFG1=1;
379			PCFG2=1;
380			PCFG3=1;
381
382			//Result is right justified
383			ADFM=1;
384
385			//Fire up for A/D converter module
386			ADON=1;
387			}
388
389	torben	2	void i2c_init(void)
390			{
391	torben	17	// I2C_MODULE h�rer hjemme i i2c.h
392	torben	2	#ifdef I2C_MODULE
393			SSPMode(MASTER_MODE);
394			SSPEN = 1;
395			CKP = 1;
396			#else
397			SCL_DIR = I2C_OUTPUT;
398			SDA_DIR = I2C_OUTPUT;
399			SDA = 0;
400			SCL = 0;
401			#endif
402			}
403
404	torben	10
405
406	torben	2	char ReadTemp(void)
407			{
408			char temp;
409	torben	10	i2c_WriteTo(TC74); //write to, will automatically send a start condition
410	torben	2	i2c_PutByte(0x00); //tell TC74 we want to read
411			i2c_ReadFrom(TC74);
412			temp = i2c_GetByte(I2C_LAST);
413			i2c_Stop(); //assert a stop condition on SDA & SCL
414			return temp;
415	torben	10	}
416
417
418			///////////////////////////////////////////////////////////////////
419			//Main
420	torben	2
421	torben	10
422	torben	2	void main(void)
423			{
424			lcd_init(0); //init in 4-bit mode
425			i2c_init();
426	torben	10	serial_init(); //9600 8N1
427	torben	17	ad_init();
428			io_init();
429	torben	10	interrupt_init();
430
431
432	torben	17	slip_reset(); //take SLIP FSM into normal state
433			global_comm_currentrate = Baud9600; //default baudrate = 9600
434			global_reset_baudrate = 0;
435	torben	10
436			// initialisation completed and we are ready to recieve commands - enable serial reception
437			CREN = 1;
438
439	torben	2	while (1)
440			{
441	torben	17	if (global_comm_ready == 1)
442			{
443			slip_highlevel_protocol(); //parse the slip frame recieved & generate response
444			slip_send_response();
445			slip_reset();
446			}
447
448			if ( global_reset_baudrate == 1)
449			{
450			}
451
452			RB1 = global_led_0;
453			RB2 = global_led_1;
454			RB3 = global_led_2;
455
456			global_temp = ReadTemp();
457
458			//potmeter
459			if (GODONE ==0 )//hvis A/D-conv er f�rdig
460			{
461
462			global_potmeter_hi = ADRESH;//gem AD resultat
463			global_potmeter_lo = ADRESL;
464			GODONE = 1; //start ny konverering
465			}
466	torben	2	}
467			}