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;     
        RB2 = !RB2;
        
        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	/* H7 -projekt opgave */
2
3	///////////////////////////////////////////////////////////////////////
4	//Includes
5	#include <pic18.h>
6	#include <string.h>
7
8	#include "delay.h"
9	#include "i2c.h"
10	#include "lcd.h"
11
12	/////////////////////////////////////////////////////////////////////
13	//Defines
14	#define TC74 0x9A /* I2C TC74 IC */
15
16	#define SLIP_END 192
17	#define SLIP_ESC 219
18	#define SLIP_ESCAPED_END 220
19	#define SLIP_ESCAPED_ESC 221
20
21	#define BUFFERLEN 16
22
23	//////////////////////////////////////////////////////////////////
24	// Enumerations
25
26	enum SlipState{
27	SlipNormal,
28	SlipEscaped,
29	SlipError,
30	SlipStopped
31	};
32
33	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	//////////////////////////////////////////////////////////////////
60	//Globale data
61	// Alle globale variabler bruger "global_" som prefix
62
63	unsigned char global_comm_buffer[BUFFERLEN];
64	unsigned char global_comm_length;
65
66	bit global_comm_ready;
67	bit global_comm_error;
68
69	unsigned char global_comm_slipstate;
70	unsigned char global_comm_currentrate;
71
72	unsigned char global_lcd_buffer[20];
73	unsigned char global_lcd_index;
74
75
76	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	///////////////////////////////////////////////////////////////////
87	// Interrupt funktioner
88
89	void recieve_interrupt(void)
90	{
91	unsigned char data = RCREG;
92	RB2 = !RB2;
93
94	switch (global_comm_slipstate)
95	{
96	case SlipNormal:
97	if (data == SLIP_END)
98	{
99	global_comm_ready = 1;
100	global_comm_slipstate = SlipStopped;
101	}
102	else if (data == SLIP_ESC)
103	{
104	global_comm_slipstate = SlipEscaped;
105	}
106	else
107	global_comm_buffer[ global_comm_length++ ] = data;
108	break;
109
110	case SlipEscaped:
111	if (data == SLIP_ESCAPED_ESC)
112	{
113	global_comm_buffer[ global_comm_length++ ] = SLIP_ESC;
114	global_comm_slipstate = SlipNormal;
115	}
116	else if (data ==SLIP_ESCAPED_END)
117	{
118	global_comm_buffer[ global_comm_length++ ] = SLIP_END;
119	global_comm_slipstate = SlipNormal;
120	}
121	else
122	{
123	global_comm_slipstate = SlipError;
124	}
125	case SlipError:
126	if (data == SLIP_END)
127	{
128	global_comm_error = 1;
129	global_comm_slipstate = SlipStopped;
130	global_comm_ready = 1;
131	}
132	case SlipStopped: //vi var ikke klar til at modtage data
133	global_comm_error = 1;
134	}
135	}
136
137	/*
138	void transmit_interrupt(void)
139	{
140	RB2 = !RB2;
141	}
142	*/
143
144	void interrupt interrupt_handler(void)
145	{
146	if (RCIF == 1)
147	{
148	recieve_interrupt();
149	RCIF = 0;
150	}
151	/*if (TXIF == 1)
152	{
153	transmit_interrupt();
154	TXIF = 0;
155	}
156	*/
157	}
158
159	///////////////////////////////////////////////////////////////////
160	// Slip funktioner
161
162	void slip_reset(void)
163	{
164	global_comm_error = 0;
165	global_comm_slipstate = SlipNormal;
166	global_comm_ready = 0;
167	global_comm_length = 0;
168	memset(global_comm_buffer, 0, BUFFERLEN);
169	}
170
171	void slip_highlevel_protocol(void)
172	{
173	unsigned char cmd,target,data;
174
175	cmd = global_comm_buffer[0] & 0x0F;
176	target = ( global_comm_buffer[0] >> 4 ) & 0x0F;
177	data = global_comm_buffer[1];
178
179	if (cmd == CmdRead \|\| cmd == CmdWrite)
180	{
181	//s�t standart l�ngde - da l�ngden kun varierer ved l�sning af potmeter
182	if (cmd == CmdRead)
183	global_comm_length = 2;
184	else
185	global_comm_length = 1;
186
187	switch(target)
188	{
189	case TLed3:
190	if (cmd == CmdRead)
191	global_comm_buffer[1] = global_led_0;
192	else
193	global_led_0 = data;
194	break;
195	case TLed4:
196	if(cmd == CmdRead)
197	global_comm_buffer[1] = global_led_1;
198	else
199	global_led_1 = data;
200	break;
201	case TLed5:
202	if (cmd == CmdRead)
203	global_comm_buffer[1] = global_led_2;
204	else
205	global_led_2 = data;
206	break;
207	case TSwitch2:
208	if (cmd == CmdRead)
209	global_comm_buffer[1] = RA4;
210	else
211	global_comm_error = 1;
212	break;
213	case TSwitch3:
214	if (cmd == CmdRead)
215	global_comm_buffer[1] = RB0;
216	else
217	global_comm_error = 1;
218	break;
219	case TPotmeter:
220	if (cmd == CmdRead)
221	{
222	global_comm_buffer[1] = global_potmeter_hi;
223	global_comm_buffer[2] = global_potmeter_lo;
224	global_comm_length = 3;
225	}
226	else
227	global_comm_error = 1;
228	break;
229	case TTemp:
230	if (cmd == CmdRead)
231	global_comm_buffer[1] = global_temp;
232	else
233	global_comm_error = 1;
234	break;
235	case TBaud:
236	if (cmd == CmdRead)
237	global_comm_error = 1;
238	else
239	{
240	//we can only handle 1200,2400,9600,19200
241	if (data == 0 \|\| data == 1 \|\| data == 3 \|\| data == 4)
242	global_reset_baudrate = 1;
243	else
244	global_comm_error = 1;
245	}
246	break;
247	default:
248	global_comm_error = 1;
249
250	}
251	}
252	else //kommandoen var noget andet end read/write
253	{
254	global_comm_error = 1;
255	}
256
257
258	if (global_comm_error == 1) //we saw an error
259	{
260	global_comm_buffer[0] = CmdNAck \| target<<4;
261	global_comm_length = 1;
262	}
263	else
264	{
265	global_comm_buffer[0] = CmdAck \| target<<4; //skriv acknowledge feltet
266	}
267	}
268
269	void slip_send_byte(char data)
270	{
271	TXREG = data;
272	while (TRMT==0) ;
273	DelayUs(20);
274	}
275
276	void slip_send_response(void)
277	{
278	int i;
279	for (i=0; i< global_comm_length;i++)
280	{
281	if ( global_comm_buffer[i] == SLIP_ESC)
282	{
283	slip_send_byte(SLIP_ESC);
284	slip_send_byte(SLIP_ESCAPED_ESC);
285	}
286	else if (global_comm_buffer[i] == SLIP_END)
287	{
288	slip_send_byte(SLIP_ESC);
289	slip_send_byte(SLIP_ESCAPED_END);
290	}
291	else
292	{
293	slip_send_byte( global_comm_buffer[i]);
294	}
295	}
296
297	slip_send_byte(SLIP_END);
298	}
299
300	///////////////////////////////////////////////////////////////////
301	// Gennerelle funktioner
302
303	void interrupt_init(void)
304	{
305	TXIE = 0; //Disable AUX TX interrupt - testes med TXIF;
306	RCIE = 1; //Enable AUX Recieve interrupt - testes med RCIF;
307
308	IPEN = 0; // IPEN=Interrupt Priority ENable bit - her bruges ingen prioritet
309
310	PEIE = 1; // PEIE = PEriphal Interrupt Enable
311
312	TXIF = 0; //nulstil intterupt flag
313	RCIF = 0;
314
315	GIE = 1; //Global interrupt enable bit
316	}
317
318	void serial_init(void)
319	{
320	SPEN = 0; //Make sure serial port is disabled
321
322	// snupset fra Kim H Pedersens serialmain.c
323	// Set Port C bit 6 output (TxD) and bit 7 input (RxD)
324	TRISC6 = 0;
325	TRISC7 = 1;
326
327	SPBRG = 25; // x = Fosc/(16 * Baud Rate) - 1
328	// x = 4000000/(16 * 9600) - 1
329	// x = 25.0417 ~ 25
330	// Baud Rate = Fosc/(16 * (x+1))
331	// Baud Rate = 4000000/(16 * (25+1))
332	// Baud Rate = 9615
333	TXSTA = 0x24; // TXSTA7 = 0 Don't care in asynchronous
334	// TXSTA6 = 0 8-bit transmission
335	// TXSTA5 = 1 Transmit enabled
336	// TXSTA4 = 0 Asynchronous mode
337	// TXSTA3 = 0 Unimplemented
338	// TXSTA2 = 1 High speed
339	// TXSTA1 = 0 TSR empty
340	// TXSTA0 = 0 9th bit */
341	RCSTA = 0x90; // RCSTA7 = 0 Serial port disabled
342	// RCSTA6 = 0 8-bit reception
343	// RCSTA5 = 0 Don't care in asynchronous
344	// RCSTA4 = 1 Receiver enabled
345	// RCSTA3 = 0 Don't care (8-bit operation)
346	// RCSTA2 = 0 No framing error
347	// RCSTA1 = 0 Overrun error bit
348	// RCSTA0 = 0 9th bit */
349
350	//config completed
351	SPEN = 1; //Enable Serial port
352	}
353
354	/* basic I/O ports */
355	void io_init(void)
356	{
357	TRISB3 = 0; //LED ports = output
358	TRISB2 = 0;
359	TRISB1 = 0;
360
361	TRISB0 = 1; //Switch porte = input
362	TRISA0 = 1;
363	}
364
365	void ad_init(void)
366	{
367	// AD Conversion clock
368	ADCS0 = 0;
369	ADCS1 = 0;
370	ADCS2 = 0;
371
372	//Select AN0/RA0 for AD source
373	CHS0=0;
374	CHS1=0;
375	CHS2=0;
376
377	//Only AN0 is selected for AD and with Vdd/Vss as limits
378	PCFG0=0;
379	PCFG1=1;
380	PCFG2=1;
381	PCFG3=1;
382
383	//Result is right justified
384	ADFM=1;
385
386	//Fire up for A/D converter module
387	ADON=1;
388	}
389
390	void i2c_init(void)
391	{
392	// I2C_MODULE h�rer hjemme i i2c.h
393	#ifdef I2C_MODULE
394	SSPMode(MASTER_MODE);
395	SSPEN = 1;
396	CKP = 1;
397	#else
398	SCL_DIR = I2C_OUTPUT;
399	SDA_DIR = I2C_OUTPUT;
400	SDA = 0;
401	SCL = 0;
402	#endif
403	}
404
405
406
407	char ReadTemp(void)
408	{
409	char temp;
410	i2c_WriteTo(TC74); //write to, will automatically send a start condition
411	i2c_PutByte(0x00); //tell TC74 we want to read
412	i2c_ReadFrom(TC74);
413	temp = i2c_GetByte(I2C_LAST);
414	i2c_Stop(); //assert a stop condition on SDA & SCL
415	return temp;
416	}
417
418
419	///////////////////////////////////////////////////////////////////
420	//Main
421
422
423	void main(void)
424	{
425	lcd_init(0); //init in 4-bit mode
426	i2c_init();
427	serial_init(); //9600 8N1
428	ad_init();
429	io_init();
430	interrupt_init();
431
432
433	slip_reset(); //take SLIP FSM into normal state
434	global_comm_currentrate = Baud9600; //default baudrate = 9600
435	global_reset_baudrate = 0;
436
437	// initialisation completed and we are ready to recieve commands - enable serial reception
438	CREN = 1;
439
440	while (1)
441	{
442	if (global_comm_ready == 1)
443	{
444	slip_highlevel_protocol(); //parse the slip frame recieved & generate response
445	slip_send_response();
446	slip_reset();
447	}
448
449	if ( global_reset_baudrate == 1)
450	{
451	}
452
453	RB1 = global_led_0;
454	RB2 = global_led_1;
455	RB3 = global_led_2;
456
457	global_temp = ReadTemp();
458
459	//potmeter
460	if (GODONE ==0 )//hvis A/D-conv er f�rdig
461	{
462
463	global_potmeter_hi = ADRESH;//gem AD resultat
464	global_potmeter_lo = ADRESL;
465	GODONE = 1; //start ny konverering
466	}
467	}
468	}