[kokare.git] / kokare.c

#include <avr/io.h>
#include <avr/interrupt.h>
#include <inttypes.h>
#include <math.h>

#define SEGA 4
#define SEGB 2
#define SEGC 1
#define SEGD 32
#define SEGE 64
#define SEGF 16
#define SEGG 8
#define SEGP 128

uint8_t font[16] = {
    SEGA | SEGB | SEGC | SEGD | SEGE | SEGF,
    SEGB | SEGC,
    SEGA | SEGB | SEGD | SEGE | SEGG,
    SEGA | SEGB | SEGC | SEGD | SEGG,
    SEGB | SEGC | SEGF | SEGG,
    SEGA | SEGC | SEGD | SEGF | SEGG,
    SEGA | SEGC | SEGD | SEGE | SEGF | SEGG,
    SEGA | SEGB | SEGC,
    SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG,
    SEGA | SEGB | SEGC | SEGD | SEGF | SEGG,
    SEGA | SEGB | SEGC | SEGE | SEGF | SEGG,
    SEGC | SEGD | SEGE | SEGF | SEGG,
    SEGA | SEGD | SEGE | SEGF,
    SEGB | SEGC | SEGD | SEGE | SEGG,
    SEGA | SEGD | SEGE | SEGF | SEGG,
    SEGA | SEGE | SEGF | SEGG,
};
/* LED */
uint8_t dsp[2] = {0, 0};
char leda = 0;
char ledc = 0;
/* Timer */
volatile int oticks = 0;
unsigned long mnow;
/* Pulse counter */
volatile char pstate = 0;
char pval = 0;
/* Switch */
volatile char sstate = 0;
int stime = 0;
/* Temp sensor */
volatile char tstate = 0;
volatile char tlock = 0;
unsigned long tstart;
unsigned long ttime;
unsigned long ttimea = 10000;
char tavgok = 0;
/* Conversion loop */
int tempk;
volatile ktok = 0;
/* Zero-cross detector*/
volatile char zok = 0;
volatile char ztime = 0;
/* Triac */
char trstate = 0;
char tron = 0;
volatile char trtime;
volatile char trdelay = 0;

void init(void)
{
    /* Timer init
     * Timer 0 cycles the Triac
     * Timer 1 is used for global timing
     * Timer 2 cycles the LED display
     */
    OCR0A = 100;
    TCCR0A = 2;
    TCCR0B = 1;
    TIMSK0 = 2;
    TCCR1A = 0;
    TCCR1B = 1;
    TIMSK1 = 1;
    OCR2A = 16;
    TCCR2A = 2;
    TCCR2B = 4;
    TIMSK2 = 2;
    
    /*
     * B0..2 = Pulse sensor
     * B3..5 = ISP
     * B6..7 = CLK
     */
    DDRB = 0x38;
    PORTB = 0x07;
    PCMSK0 = 0x07;
    PCICR = 0x01;
    /*
     * C0..5 = LEDA0..5
     * C6 = /RESET
     * C7 = NC
     */
    DDRC = 0x3f;
    PORTC = 0x00;
    /*
     * D0 = Triac
     * D1 = NTC FET
     * D2 = ZCD (INT0)
     * D3 = NTC Op-amp (INT1)
     * D4..5 = LEDA6..7
     * D6..7 = LEDC0..1
     */
    DDRD = 0xf3;
    PORTD = 0x00;
    EICRA = 0x0d;
    EIMSK = 0x03;
}

unsigned char bindisp(unsigned char num)
{
    unsigned char ret;
    
    ret = 0;
    if(num & 1)
	ret |= SEGA;
    if(num & 2)
	ret |= SEGB;
    if(num & 4)
	ret |= SEGC;
    if(num & 8)
	ret |= SEGD;
    if(num & 16)
	ret |= SEGE;
    if(num & 32)
	ret |= SEGF;
    if(num & 64)
	ret |= SEGG;
    if(num & 128)
	ret |= SEGP;
    return(ret);
}

void display(char num)
{
    dsp[0] = font[(num / 10) % 10];
    dsp[1] = font[num % 10];
}

void disphex(unsigned char num)
{
    dsp[0] = font[(num & 0xf0) >> 4];
    dsp[1] = font[num & 0x0f];
}

unsigned long getticks(void)
{
    return(TCNT1 + (((unsigned long)oticks) << 16));
}

void ledcycle(void)
{
    uint8_t c, d, v;
    
    if(++leda >= 8) {
	leda = 0;
	if(++ledc >= 2)
	    ledc = 0;
    }
    if(dsp[ledc] & (1 << leda)) {
	if(leda < 6) {
	    c = 1 << leda;
	    d = 0;
	} else {
	    c = 0;
	    d = 0x10 << (leda - 6);
	}
	d |= ledc?0x40:0x80;
    } else {
	c = d = 0;
    }
    PORTC = c;
    PORTD = (PORTD & 0x0f) | d;
}

void tempcycle(void)
{
    if(tstate == 0) {
	if((PIND & 8) && (tlock == 0)) {
	    cli();
	    PORTD |= 2;
	    sei();
	    tstart = mnow;
	    tstate = 1;
	}
    } else if(tstate == 1) {
	if(mnow - tstart > 1000) {
	    cli();
	    PORTD &= ~2;
	    sei();
	    tstate = 0;
	    tstart = mnow;
	}
    }
}

void calcavg(void)
{
    if(tlock == 1) {
	tlock = 2;
	ttimea = ((ttimea * 15) + ttime) >> 4;
	tlock = 0;
	tavgok = 1;
    }
}

void convcycle(void)
{
    static char state = 0;
    static unsigned long last = 0;
    static float a, ra, l, t;
    
    /*
     * Theoretically:
     *  t = RC * ln(2) => R = t / (C * ln(2))
     *  R = A * exp(B / T) => T = B / ln(R / A)
     *  T = B / ln(R / (A * C * ln(2)))
     * In the following: 
     *  a = ttimea as float
     *  C = 1e6 / (A * C * ln(2))
     *  ra = a * C
     *  l = ln(ra)
     *  t = B / l
     * Note, temperature is in Kelvin
     */
#define C 9.792934
#define B 4020.0
    if(state == 0) {
	if((mnow - last > 200000) && tavgok) {
	    a = (float)ttimea;
	    state = 1;
	    tavgok = 0;
	    last = mnow;
	}
    } else if(state == 1) {
	ra = a * C;
	state = 2;
    } else if(state == 2) {
	l = log(ra);
	state = 3;
    } else if(state == 3) {
	t = B / l;
	state = 4;
    } else if(state == 4) {
	tempk = (int)t;
	ktok = 1;
	state = 0;
    }
}

int main(void)
{
    int state, cur;
    unsigned long utime;
    
    state = 0;
    cur = 99;
    init();
    sei();
    display(0);

    while(1) {
	mnow = getticks();
	tempcycle();
	calcavg();
	convcycle();

#if 1
	/*
	 * User interface
	 */
	if(state == 0) {
	    /* Display temperature */
	    if(ktok) {
		ktok = 0;
		if((tempk >= 273) && (tempk <= 372)) {
		    display(tempk - 273);
		} else {
		    dsp[0] = dsp[1] = SEGG;
		}
	    }
	    if(pval != 0) {
		state = 1;
		utime = mnow;
	    }
	    if(sstate == 2) {
		sstate = 0;
		if(stime > 10) {
		    state = 2;
		} else {
		    tron = !tron;
		}
	    }
	} else if(state == 1) {
	    /* Triac control */
	    if(pval != 0) {
		cur += pval;
		pval = 0;
		if(cur < 0)
		    cur = 0;
		if(cur > 99)
		    cur = 99;
		display(cur);
		trdelay = 99 - cur;
		utime = mnow;
	    }
	    if(mnow - utime > 1000000) {
		state = 0;
	    }
	    if(sstate == 2) {
		tron = !tron;
		sstate = 0;
	    }
	} else if(state == 2) {
	    if(ttimea < 20000) {
		display((ttimea / 100) % 100);
		dsp[0] |= SEGP;
		if(ttimea >= 10000)
		    dsp[1] |= SEGP;
	    } else {
		display(ttimea / 1000);
	    }
	    if(sstate == 2) {
		state = 0;
		sstate = 0;
	    }
	}
#endif
	/*
	  dsp[0] = bindisp((ttimea & 0xff00) >> 8);
	  dsp[1] = bindisp(ttimea & 0x00ff);
	*/
	/*
	  disphex((ttimea & 0xff000) >> 12);
	*/
#if 0
	/*
	  Temp display
	*/
	if(ttimea < 20000) {
	    display((ttimea / 100) % 100);
	    dsp[0] |= SEGP;
	    if(ttimea >= 10000)
		dsp[1] |= SEGP;
	} else {
	    display(ttimea / 1000);
	}
#endif
#if 0
	/*
	 * ZVD debug
	 */
	if(zok) {
	    if(++cur > 99)
		cur = 0;
	    display(cur);
	    zok = 0;
	}
#endif
#if 0
	/*
	  Phony Triac control
	 */
	if(pval != 0) {
	    cur += pval;
	    if(cur < 0)
		cur = 0;
	    if(cur > 99)
		cur = 99;
	    display(cur);
	    trdelay = 99 - cur;
	    pval = 0;
	}
	if(sstate == 2) {
	    tron = !tron;
	    sstate = 0;
	}
	if(tron)
	    dsp[1] |= SEGP;
	else
	    dsp[1] &= ~SEGP;
#endif
#if 0
	/*
	  Pulse counter display
	*/
	cur += pval;
	pval = 0;
	if(sstate == 2) {
	    cur = stime;
	    sstate = 0;
	}
	if(cur > 99)
	    cur = 99;
	if(cur < -99)
	    cur = -99;
	if(cur < 0) {
	    display(-cur);
	    dsp[0] |= SEGP;
	} else {
	    display(cur);
	}
	if(PINB & 4)
	    dsp[1] |= SEGP;
#endif
    }
}

ISR(SIG_INTERRUPT0)
{
    ztime = 0;
    zok = 1;
}

ISR(SIG_INTERRUPT1)
{
    unsigned long now;
    
    now = getticks();
    if(tstate == 0) {
	tstate = 1;
	if(tlock != 2)
	    ttime = now - tstart;
	tstart = now;
	PORTD |= 2;
	tlock = 1;
    }
}

ISR(SIG_OUTPUT_COMPARE0A)
{
    if(trstate == 0) {
	ztime++;
	if(tron && (ztime >= trdelay)) {
	    PORTD |= 1;
	    trstate = 1;
	    trtime = 0;
	}
    } else if(trstate == 1) {
	trtime++;
	if(trtime >= 5) {
	    PORTD &= ~1;
	    trstate = 0;
	}
    }
}

ISR(SIG_OUTPUT_COMPARE2A)
{
    ledcycle();
}

ISR(SIG_OVERFLOW1)
{
    oticks++;
}

ISR(SIG_PIN_CHANGE0)
{
    if((sstate == 0) && !(PINB & 4)) {
	stime = oticks;
	sstate = 1;
    }
    if((sstate == 1) && (PINB & 4)) {
	stime = oticks - stime;
	sstate = 2;
    }
    if(pstate == 0) {
	if((PINB & 2) == 0) {
	    pstate = 1;
	} else if((PINB & 1) == 0) {
	    pstate = 2;
	}
    } else if(pstate == 1) {
	if((PINB & 1) == 0) {
	    pval++;
	    pstate = 3;
	} else {
	    pstate = 0;
	}
    } else if(pstate == 2) {
	if((PINB & 2) == 0) {
	    pval--;
	    pstate = 3;
	} else {
	    pstate = 0;
	}
    } else {
	if((PINB & 2) && (PINB & 1))
	    pstate = 0;
    }
}
Commit	Line	Data
31415646 FT	1	#include <avr/io.h>
	2	#include <avr/interrupt.h>
	3	#include <inttypes.h>
2f37b902	4	#include <math.h>
31415646	5
2378926d FT	6	#define SEGA 4
	7	#define SEGB 2
	8	#define SEGC 1
	9	#define SEGD 32
	10	#define SEGE 64
	11	#define SEGF 16
	12	#define SEGG 8
	13	#define SEGP 128
31415646 FT	14
	15	uint8_t font[16] = {
	16	SEGA \| SEGB \| SEGC \| SEGD \| SEGE \| SEGF,
	17	SEGB \| SEGC,
	18	SEGA \| SEGB \| SEGD \| SEGE \| SEGG,
	19	SEGA \| SEGB \| SEGC \| SEGD \| SEGG,
	20	SEGB \| SEGC \| SEGF \| SEGG,
	21	SEGA \| SEGC \| SEGD \| SEGF \| SEGG,
	22	SEGA \| SEGC \| SEGD \| SEGE \| SEGF \| SEGG,
	23	SEGA \| SEGB \| SEGC,
	24	SEGA \| SEGB \| SEGC \| SEGD \| SEGE \| SEGF \| SEGG,
	25	SEGA \| SEGB \| SEGC \| SEGD \| SEGF \| SEGG,
	26	SEGA \| SEGB \| SEGC \| SEGE \| SEGF \| SEGG,
	27	SEGC \| SEGD \| SEGE \| SEGF \| SEGG,
	28	SEGA \| SEGD \| SEGE \| SEGF,
	29	SEGB \| SEGC \| SEGD \| SEGE \| SEGG,
	30	SEGA \| SEGD \| SEGE \| SEGF \| SEGG,
	31	SEGA \| SEGE \| SEGF \| SEGG,
	32	};
	33	/* LED */
	34	uint8_t dsp[2] = {0, 0};
	35	char leda = 0;
	36	char ledc = 0;
	37	/* Timer */
26e5097c	38	volatile int oticks = 0;
59d1e985	39	unsigned long mnow;
31415646	40	/* Pulse counter */
26e5097c	41	volatile char pstate = 0;
31415646 FT	42	char pval = 0;
31415646 FT	43	/* Switch */
26e5097c	44	volatile char sstate = 0;
31415646 FT	45	int stime = 0;
31415646 FT	46	/* Temp sensor */
26e5097c FT	47	volatile char tstate = 0;
26e5097c FT	48	volatile char tlock = 0;
31415646 FT	49	unsigned long tstart;
	50	unsigned long ttime;
	51	unsigned long ttimea = 10000;
c1346a55	52	char tavgok = 0;
2f37b902 FT	53	/* Conversion loop */
	54	int tempk;
	55	volatile ktok = 0;
31415646	56	/* Zero-cross detector*/
26e5097c	57	volatile char zok = 0;
c7732766	58	volatile char ztime = 0;
31415646	59	/* Triac */
59d1e985 FT	60	char trstate = 0;
59d1e985 FT	61	char tron = 0;
c7732766 FT	62	volatile char trtime;
c7732766 FT	63	volatile char trdelay = 0;
31415646 FT	64
	65	void init(void)
	66	{
c7732766	67	/* Timer init
8c536798	68	* Timer 0 cycles the Triac
c7732766	69	* Timer 1 is used for global timing
8c536798	70	* Timer 2 cycles the LED display
c7732766 FT	71	*/
	72	OCR0A = 100;
	73	TCCR0A = 2;
	74	TCCR0B = 1;
	75	TIMSK0 = 2;
31415646 FT	76	TCCR1A = 0;
	77	TCCR1B = 1;
	78	TIMSK1 = 1;
8c536798 FT	79	OCR2A = 16;
	80	TCCR2A = 2;
	81	TCCR2B = 4;
	82	TIMSK2 = 2;
31415646 FT	83
	84	/*
	85	* B0..2 = Pulse sensor
	86	* B3..5 = ISP
	87	* B6..7 = CLK
	88	*/
c1346a55	89	DDRB = 0x38;
31415646 FT	90	PORTB = 0x07;
	91	PCMSK0 = 0x07;
	92	PCICR = 0x01;
	93	/*
	94	* C0..5 = LEDA0..5
	95	* C6 = /RESET
	96	* C7 = NC
	97	*/
	98	DDRC = 0x3f;
	99	PORTC = 0x00;
	100	/*
	101	* D0 = Triac
	102	* D1 = NTC FET
	103	* D2 = ZCD (INT0)
	104	* D3 = NTC Op-amp (INT1)
	105	* D4..5 = LEDA6..7
	106	* D6..7 = LEDC0..1
	107	*/
	108	DDRD = 0xf3;
	109	PORTD = 0x00;
	110	EICRA = 0x0d;
	111	EIMSK = 0x03;
	112	}
	113
	114	unsigned char bindisp(unsigned char num)
	115	{
	116	unsigned char ret;
	117
	118	ret = 0;
	119	if(num & 1)
	120	ret \|= SEGA;
	121	if(num & 2)
	122	ret \|= SEGB;
	123	if(num & 4)
	124	ret \|= SEGC;
	125	if(num & 8)
	126	ret \|= SEGD;
	127	if(num & 16)
	128	ret \|= SEGE;
	129	if(num & 32)
	130	ret \|= SEGF;
	131	if(num & 64)
	132	ret \|= SEGG;
	133	if(num & 128)
	134	ret \|= SEGP;
	135	return(ret);
	136	}
	137
	138	void display(char num)
	139	{
	140	dsp[0] = font[(num / 10) % 10];
	141	dsp[1] = font[num % 10];
	142	}
	143
	144	void disphex(unsigned char num)
	145	{
	146	dsp[0] = font[(num & 0xf0) >> 4];
	147	dsp[1] = font[num & 0x0f];
	148	}
	149
	150	unsigned long getticks(void)
	151	{
	152	return(TCNT1 + (((unsigned long)oticks) << 16));
	153	}
154
155	void ledcycle(void)
156	{
31415646 FT	157	uint8_t c, d, v;
31415646 FT	158
8c536798 FT	159	if(++leda >= 8) {
	160	leda = 0;
	161	if(++ledc >= 2)
	162	ledc = 0;
	163	}
	164	if(dsp[ledc] & (1 << leda)) {
	165	if(leda < 6) {
	166	c = 1 << leda;
	167	d = 0;
31415646	168	} else {
8c536798 FT	169	c = 0;
8c536798 FT	170	d = 0x10 << (leda - 6);
31415646	171	}
8c536798 FT	172	d \|= ledc?0x40:0x80;
	173	} else {
	174	c = d = 0;
31415646	175	}
8c536798 FT	176	PORTC = c;
8c536798 FT	177	PORTD = (PORTD & 0x0f) \| d;
31415646 FT	178	}
	179
	180	void tempcycle(void)
	181	{
31415646 FT	182	if(tstate == 0) {
31415646 FT	183	if((PIND & 8) && (tlock == 0)) {
c7732766	184	cli();
31415646	185	PORTD \|= 2;
c7732766	186	sei();
59d1e985	187	tstart = mnow;
31415646 FT	188	tstate = 1;
	189	}
	190	} else if(tstate == 1) {
59d1e985	191	if(mnow - tstart > 1000) {
c7732766	192	cli();
31415646	193	PORTD &= ~2;
c7732766	194	sei();
31415646	195	tstate = 0;
59d1e985	196	tstart = mnow;
31415646 FT	197	}
	198	}
	199	}
	200
	201	void calcavg(void)
	202	{
	203	if(tlock == 1) {
	204	tlock = 2;
	205	ttimea = ((ttimea * 15) + ttime) >> 4;
	206	tlock = 0;
c1346a55	207	tavgok = 1;
31415646 FT	208	}
	209	}
	210
2f37b902 FT	211	void convcycle(void)
	212	{
	213	static char state = 0;
	214	static unsigned long last = 0;
	215	static float a, ra, l, t;
	216
	217	/*
	218	* Theoretically:
	219	* t = RC * ln(2) => R = t / (C * ln(2))
	220	* R = A * exp(B / T) => T = B / ln(R / A)
	221	* T = B / ln(R / (A * C * ln(2)))
	222	* In the following:
	223	* a = ttimea as float
	224	* C = 1e6 / (A * C * ln(2))
	225	* ra = a * C
	226	* l = ln(ra)
	227	* t = B / l
	228	* Note, temperature is in Kelvin
	229	*/
	230	#define C 9.792934
	231	#define B 4020.0
	232	if(state == 0) {
	233	if((mnow - last > 200000) && tavgok) {
	234	a = (float)ttimea;
	235	state = 1;
	236	tavgok = 0;
9ac074a9	237	last = mnow;
2f37b902 FT	238	}
	239	} else if(state == 1) {
	240	ra = a * C;
	241	state = 2;
	242	} else if(state == 2) {
	243	l = log(ra);
	244	state = 3;
	245	} else if(state == 3) {
	246	t = B / l;
	247	state = 4;
	248	} else if(state == 4) {
	249	tempk = (int)t;
	250	ktok = 1;
	251	state = 0;
	252	}
	253	}
	254
31415646 FT	255	int main(void)
31415646 FT	256	{
c1346a55 FT	257	int state, cur;
c1346a55 FT	258	unsigned long utime;
31415646	259
c1346a55 FT	260	state = 0;
c1346a55 FT	261	cur = 99;
31415646 FT	262	init();
	263	sei();
	264	display(0);
59d1e985	265
31415646	266	while(1) {
59d1e985	267	mnow = getticks();
31415646 FT	268	tempcycle();
31415646 FT	269	calcavg();
2f37b902	270	convcycle();
31415646	271
63e3aac7	272	#if 1
c1346a55 FT	273	/*
	274	* User interface
	275	*/
	276	if(state == 0) {
	277	/* Display temperature */
2f37b902 FT	278	if(ktok) {
	279	ktok = 0;
	280	if((tempk >= 273) && (tempk <= 372)) {
	281	display(tempk - 273);
c1346a55	282	} else {
2f37b902	283	dsp[0] = dsp[1] = SEGG;
c1346a55 FT	284	}
	285	}
	286	if(pval != 0) {
	287	state = 1;
	288	utime = mnow;
	289	}
2f37b902 FT	290	if(sstate == 2) {
	291	sstate = 0;
	292	if(stime > 10) {
	293	state = 2;
	294	} else {
	295	tron = !tron;
	296	}
	297	}
c1346a55 FT	298	} else if(state == 1) {
	299	/* Triac control */
	300	if(pval != 0) {
	301	cur += pval;
	302	pval = 0;
	303	if(cur < 0)
	304	cur = 0;
	305	if(cur > 99)
	306	cur = 99;
	307	display(cur);
c7732766	308	trdelay = 99 - cur;
c1346a55 FT	309	utime = mnow;
	310	}
	311	if(mnow - utime > 1000000) {
	312	state = 0;
	313	}
2f37b902 FT	314	if(sstate == 2) {
	315	tron = !tron;
	316	sstate = 0;
	317	}
	318	} else if(state == 2) {
	319	if(ttimea < 20000) {
	320	display((ttimea / 100) % 100);
	321	dsp[0] \|= SEGP;
	322	if(ttimea >= 10000)
	323	dsp[1] \|= SEGP;
	324	} else {
	325	display(ttimea / 1000);
	326	}
	327	if(sstate == 2) {
	328	state = 0;
	329	sstate = 0;
	330	}
c1346a55 FT	331	}
c1346a55 FT	332	#endif
31415646 FT	333	/*
	334	dsp[0] = bindisp((ttimea & 0xff00) >> 8);
	335	dsp[1] = bindisp(ttimea & 0x00ff);
	336	*/
	337	/*
	338	disphex((ttimea & 0xff000) >> 12);
	339	*/
495bea06	340	#if 0
59d1e985 FT	341	/*
	342	Temp display
	343	*/
31415646 FT	344	if(ttimea < 20000) {
	345	display((ttimea / 100) % 100);
	346	dsp[0] \|= SEGP;
	347	if(ttimea >= 10000)
	348	dsp[1] \|= SEGP;
	349	} else {
	350	display(ttimea / 1000);
	351	}
59d1e985	352	#endif
2378926d	353	#if 0
72ef9ac1 FT	354	/*
	355	* ZVD debug
	356	*/
	357	if(zok) {
	358	if(++cur > 99)
	359	cur = 0;
	360	display(cur);
	361	zok = 0;
	362	}
63e3aac7	363	#endif
c1346a55	364	#if 0
495bea06 FT	365	/*
	366	Phony Triac control
	367	*/
	368	if(pval != 0) {
	369	cur += pval;
	370	if(cur < 0)
	371	cur = 0;
	372	if(cur > 99)
	373	cur = 99;
	374	display(cur);
c7732766	375	trdelay = 99 - cur;
495bea06 FT	376	pval = 0;
	377	}
	378	if(sstate == 2) {
	379	tron = !tron;
	380	sstate = 0;
	381	}
4f42f213 FT	382	if(tron)
	383	dsp[1] \|= SEGP;
	384	else
	385	dsp[1] &= ~SEGP;
495bea06	386	#endif
59d1e985	387	#if 0
31415646	388	/*
59d1e985 FT	389	Pulse counter display
59d1e985 FT	390	*/
31415646 FT	391	cur += pval;
	392	pval = 0;
	393	if(sstate == 2) {
	394	cur = stime;
	395	sstate = 0;
	396	}
	397	if(cur > 99)
	398	cur = 99;
	399	if(cur < -99)
	400	cur = -99;
	401	if(cur < 0) {
	402	display(-cur);
	403	dsp[0] \|= SEGP;
	404	} else {
	405	display(cur);
	406	}
4f42f213 FT	407	if(PINB & 4)
4f42f213 FT	408	dsp[1] \|= SEGP;
59d1e985	409	#endif
31415646 FT	410	}
	411	}
	412
	413	ISR(SIG_INTERRUPT0)
	414	{
c7732766	415	ztime = 0;
59d1e985	416	zok = 1;
31415646 FT	417	}
	418
	419	ISR(SIG_INTERRUPT1)
	420	{
	421	unsigned long now;
	422
	423	now = getticks();
	424	if(tstate == 0) {
	425	tstate = 1;
	426	if(tlock != 2)
	427	ttime = now - tstart;
	428	tstart = now;
	429	PORTD \|= 2;
	430	tlock = 1;
	431	}
	432	}
	433
c7732766 FT	434	ISR(SIG_OUTPUT_COMPARE0A)
	435	{
	436	if(trstate == 0) {
	437	ztime++;
	438	if(tron && (ztime >= trdelay)) {
	439	PORTD \|= 1;
	440	trstate = 1;
	441	trtime = 0;
	442	}
	443	} else if(trstate == 1) {
	444	trtime++;
	445	if(trtime >= 5) {
	446	PORTD &= ~1;
	447	trstate = 0;
	448	}
	449	}
	450	}
	451
8c536798 FT	452	ISR(SIG_OUTPUT_COMPARE2A)
	453	{
	454	ledcycle();
	455	}
	456
31415646 FT	457	ISR(SIG_OVERFLOW1)
31415646 FT	458	{
31415646 FT	459	oticks++;
	460	}
	461
	462	ISR(SIG_PIN_CHANGE0)
	463	{
4f42f213	464	if((sstate == 0) && !(PINB & 4)) {
31415646 FT	465	stime = oticks;
	466	sstate = 1;
	467	}
4f42f213	468	if((sstate == 1) && (PINB & 4)) {
31415646 FT	469	stime = oticks - stime;
	470	sstate = 2;
	471	}
	472	if(pstate == 0) {
	473	if((PINB & 2) == 0) {
	474	pstate = 1;
2378926d	475	} else if((PINB & 1) == 0) {
31415646 FT	476	pstate = 2;
	477	}
	478	} else if(pstate == 1) {
2378926d	479	if((PINB & 1) == 0) {
31415646 FT	480	pval++;
	481	pstate = 3;
	482	} else {
	483	pstate = 0;
	484	}
	485	} else if(pstate == 2) {
	486	if((PINB & 2) == 0) {
	487	pval--;
	488	pstate = 3;
	489	} else {
	490	pstate = 0;
	491	}
	492	} else {
2378926d	493	if((PINB & 2) && (PINB & 1))
31415646 FT	494	pstate = 0;
	495	}
	496	}