spokepov.lss

旋转16个LED灯控制程序

	        // get the third line, which may wrap..
	  
	        cLine++;
	      
	        if (cLine == NUM_LINES) {
	          cLine = 0;
	        }
	  
	        memcpy_P(scrollLine,lines+(cLine << 4),16);
	    	
	        // If we are doing dynamic data, set it if there
	        // is such data in the line.
	      
	        #ifdef DYNAMIC
	      
	          dCode = pgm_read_byte(dInfo+cLine);
	        
	          if (dCode != 0) {
	            newDynamicPtr = scrollLine + (dCode & 0x0F);
	            dynamicType = dCode;
	       	  }
	        
	        #endif
	  
		  #endif
		
        }
    
      }

    #else

      // we could do this just once when the app initializes, but
      // for now, let's do it here.  Later we'll move it.
    
	  cur_line = line_shift = 0;

	  memcpy_P(topLine,lines,16);
	  memcpy_P(botLine,lines+16,16);
	
	  #ifdef DYNAMIC
	      
	    dCode = pgm_read_byte(dInfo);
	        
	    if (dCode != 0) {
	       newDynamicPtr = topLine + (dCode & 0x0F);
	       dynamicType = dCode;
	    }
	        
	    dCode = pgm_read_byte(dInfo+1);
	        
	    if (dCode != 0) {
	       newDynamicPtr = botLine + (dCode & 0x0F);
	       dynamicType = dCode;
	    }
	        
	  #endif
	
    #endif

    // Set the character and pixel numbers so they will overflow
    // on the next pixel interrupt, and cause the correct data to
    // be loaded.
    
    charNum = 31;		// will wrap to 0, the first char.  Not set to 15 as you might
    					// expect, because when it hits 15 again, the pixel output
    					// routine will shut down.  But (31+1) mod 16 = (15+1) mod 16...
    pixelNum = 15;		// will wrap to 0, the first pixel
    
    
    #ifdef USE_LOCAL_TIMER1
      clean = 0;		// flag that we changed things
    #endif
    
    // Start TIMER1 on its merry way...
      
    TCCR1B |= _BV(CS10);		// increment at clock/1
    TIMSK |= _BV(OCIE1A);		// enable interrupt when it matches OCR1A
    
  } else {
    
    // Since we don't have a valid setting for the rotation
    // speed, set a couple of LEDs to let the human know we
    // aren't dead yet, and turn off the timer.
      
    set_all(~0x03);
      
    TCCR1B &= ~_BV(CS10);		// no incrementing = no interrupting
    
    // reset the line timers so that when we get a valid spinup,
    // they will start clocking the lines across the display
    
    line_timer_l = SCROLLSPEED;		// delay figure, will trigger wrap
    line_shift = 0x0f;				// subcharacter shift, will trigger wrap
    cur_line = 0xff;				// will wrap to first line
    
  }   
    
  // Whether we're displaying or not, we reset sensor_timer so we can
  // time the next revolution.
    
  sensor_timer = 0;

  }
  
  // Finally, reset hall_debounce so we won't execute the timer reset code
  // until the Hall Effect sensor hasn't bothered us for a reasonable while.
  
  hall_debounce = 0;
  
  // *** PORTB &= ~0x8;

}

// Initialize the IO pins on the ATMEL.

void ioinit(void) {

  // Set the data direction for the PORTD and PORTB pins; see the
  // circuit diagram for more information on this.
  
  DDRD = 0x73; // input on PD2 (button), PD3 (sensor), all other output
  DDRB = 0xDF; // input on MOSI/DI (for SPI), all others output

  // Deselect EEPROM.  Not being an EE, I'm not going to worry about
  // how the ATMEL talks to the EEPROM.  It's black magic.
  
  PORTB = _BV(SPIEE_CS);

  // Just above, we set PD2 and PD3 to input.  If we now set those
  // bits to 1, they set into pullup mode (again, not EE, claim
  // ignorance), which is essential for them to work.  We also set
  // the SENSORPOWER bit to 1, which sends out little dribbles of
  // electrons to the hall effect sensor (see circuit diagram)
  //
  // Finally, we write 0's to the FRONT and BACK pins, which control
  // which bank of 30 LEDs we are talking to.  Having both of these
  // on at the same time probably causes horrible things to happen.
  
  PORTD = (_BV(BUTTON) | _BV(SENSOR) | _BV(SENSORPOWER))  
    & ~_BV(FRONT) & ~_BV(BACK);

  // Rather than poll to see when the hall effect sensor and
  // button are pressed, we configure an interrupt handler.  If you
  // look at the circuit diagram, you'll see that PD3 and PD2, which
  // are wired to SENSOR IN and BUTTON IN, do double-duty as INT1
  // and INT0.  They are both SUPPOSEDLY set to interrupt on the
  // falling edge of a pulse from the devices.  (Page 63)
  
  // POSSIBLE BUG: ISC0{1,0} seems to be being set to 00, not 10
  // as ISC1{1,0} is being set to.  So ISC0 will trigger when
  // the button interrupt line goes low.  Either this is a bug,
  // or the original comment was not correct (likely, IMHO)
  
  MCUCR = _BV(ISC11) & ~_BV(ISC01) & ~_BV(ISC00) &  ~_BV(ISC10);

  // Activate the interrupts by setting the General Interrupt Mask
  // Register (Page 63)
  
  GIMSK = _BV(INT1) | _BV(INT0);

  // The ATMEL has built-in timers that can trigger an interrupt.
  // SpokePOV uses them to update the LEDs 256 times per rotation.
  
  // Timer 0 is set to update at a rate system-clock / 256 and
  // interrupt when it overflows (8 bit).  This means that it
  // triggers every 65536 cycles.
  
  TCCR0A = 0;				// normal, overflow (count up to 256 == num pixels)
  TCCR0B = _BV(CS02);		// clk/256
  TIMSK |= _BV(TOIE0);		// turn on overflow interrupt
  
  // Timer 1 (T1) is the pixel timer, which is used to update the
  // LEDs 256 times per rotation.  It's set up as a normal timer
  // as well.  See Page 108&71; it is apparently being set into CTC
  // mode 4.  This means that the counter is compared to a 16-bit value
  // and interrupts when it reaches this value.
  //
  // Adjusting this value is how the SpokePOV compensates for
  // changes in the rotation speed of the device.
  //
  // Note that at this point, the timer is initialized, but not
  // activated.
  
  TCCR1A = 0;
  TCCR1B = _BV(WGM12);

  // Clear the debounce values, which I haven't sussed out yet.
  
  hall_debounce = 0;
  sensor_timer = 0;
  
}

// Delay for a specified number of milliseconds using some
// assembly code.  Will this be dependant on the clock speed?

void delay_ms(unsigned char ms)
{
  unsigned short delay_count = F_CPU / 4000;
  
  unsigned short cnt;
  asm volatile ("\n"
		"L_dl1%=:\n\t"
		"mov %A0, %A2\n\t"
		"mov %B0, %B2\n"
		"L_dl2%=:\n\t"
		"sbiw %A0, 1\n\t"
		"brne L_dl2%=\n\t"
		"wdr\n\t"
		"dec %1\n\t" "brne L_dl1%=\n\t":"=&w" (cnt)
		:"r"(ms), "r"((unsigned short) (delay_count))
		);
}

// Turn on a single LED, turning off all the other LEDs

//void set_led(uint8_t led) {

//  fleds[0] = fleds[1] = fleds[2] = fleds[3] = 0xFF;
//  fleds[led >> 3] = ~_BV(led & 0x7F);

//  clock_scroll(0);
//}

// Set all the LEDs on a side to have the same
// repeating 8-bit value (ie: 0x00 = all on, 0xFF = all off)
// Added by RJW to permit a more comprehensive reset display

void set_all(uint8_t blockValue) {

  fleds[0] = fleds[1] = fleds[2] = fleds[3] = blockValue;
 156:	80 93 8c 00 	sts	0x008C, r24
 15a:	80 93 8b 00 	sts	0x008B, r24
 15e:	80 93 8a 00 	sts	0x008A, r24
 162:	80 93 89 00 	sts	0x0089, r24
  
  clock_scroll(0);
 166:	80 e0       	ldi	r24, 0x00	; 0
 168:	98 df       	rcall	.-208    	; 0x9a <clock_scroll>
 16a:	08 95       	ret

0000016c <__vector_4>:
 16c:	1f 92       	push	r1
 16e:	0f 92       	push	r0
 170:	0f b6       	in	r0, 0x3f	; 63
 172:	0f 92       	push	r0
 174:	11 24       	eor	r1, r1
 176:	2f 93       	push	r18
 178:	3f 93       	push	r19
 17a:	4f 93       	push	r20
 17c:	5f 93       	push	r21
 17e:	6f 93       	push	r22
 180:	7f 93       	push	r23
 182:	8f 93       	push	r24
 184:	9f 93       	push	r25
 186:	af 93       	push	r26
 188:	bf 93       	push	r27
 18a:	ef 93       	push	r30
 18c:	ff 93       	push	r31
 18e:	80 91 87 00 	lds	r24, 0x0087
 192:	90 91 88 00 	lds	r25, 0x0088
 196:	82 56       	subi	r24, 0x62	; 98
 198:	92 40       	sbci	r25, 0x02	; 2
 19a:	08 f0       	brcs	.+2      	; 0x19e <__vector_4+0x32>
 19c:	af c0       	rjmp	.+350    	; 0x2fc <__vector_4+0x190>
 19e:	80 91 6a 00 	lds	r24, 0x006A
 1a2:	8f 5f       	subi	r24, 0xFF	; 255
 1a4:	80 93 6a 00 	sts	0x006A, r24
 1a8:	80 91 6a 00 	lds	r24, 0x006A
 1ac:	80 31       	cpi	r24, 0x10	; 16
 1ae:	09 f0       	breq	.+2      	; 0x1b2 <__vector_4+0x46>
 1b0:	6e c0       	rjmp	.+220    	; 0x28e <__vector_4+0x122>
 1b2:	80 91 6b 00 	lds	r24, 0x006B
 1b6:	8f 30       	cpi	r24, 0x0F	; 15
 1b8:	61 f0       	breq	.+24     	; 0x1d2 <__vector_4+0x66>
 1ba:	10 92 6a 00 	sts	0x006A, r1
 1be:	80 91 6b 00 	lds	r24, 0x006B
 1c2:	8f 5f       	subi	r24, 0xFF	; 255
 1c4:	8f 70       	andi	r24, 0x0F	; 15
 1c6:	80 93 6b 00 	sts	0x006B, r24
 1ca:	80 91 6b 00 	lds	r24, 0x006B
 1ce:	8f 30       	cpi	r24, 0x0F	; 15
 1d0:	29 f4       	brne	.+10     	; 0x1dc <__vector_4+0x70>
 1d2:	8e b5       	in	r24, 0x2e	; 46
 1d4:	88 7f       	andi	r24, 0xF8	; 248
 1d6:	8e bd       	out	0x2e, r24	; 46
 1d8:	8f ef       	ldi	r24, 0xFF	; 255
 1da:	94 c0       	rjmp	.+296    	; 0x304 <__vector_4+0x198>
 1dc:	80 91 6b 00 	lds	r24, 0x006B
 1e0:	e8 2f       	mov	r30, r24
 1e2:	ff 27       	eor	r31, r31
 1e4:	e1 57       	subi	r30, 0x71	; 113
 1e6:	ff 4f       	sbci	r31, 0xFF	; 255
 1e8:	e0 81       	ld	r30, Z
 1ea:	e0 52       	subi	r30, 0x20	; 32
 1ec:	8e 2f       	mov	r24, r30
 1ee:	86 95       	lsr	r24
 1f0:	28 2f       	mov	r18, r24
 1f2:	33 27       	eor	r19, r19
 1f4:	f6 e0       	ldi	r31, 0x06	; 6
 1f6:	22 0f       	add	r18, r18
 1f8:	33 1f       	adc	r19, r19
 1fa:	fa 95       	dec	r31
 1fc:	e1 f7       	brne	.-8      	; 0x1f6 <__vector_4+0x8a>
 1fe:	8e 2f       	mov	r24, r30
 200:	99 27       	eor	r25, r25
 202:	81 70       	andi	r24, 0x01	; 1
 204:	90 70       	andi	r25, 0x00	; 0
 206:	88 0f       	add	r24, r24
 208:	99 1f       	adc	r25, r25
 20a:	28 2b       	or	r18, r24
 20c:	39 2b       	or	r19, r25
 20e:	30 93 6f 00 	sts	0x006F, r19
 212:	20 93 6e 00 	sts	0x006E, r18
 216:	80 91 6b 00 	lds	r24, 0x006B
 21a:	e8 2f       	mov	r30, r24
 21c:	ff 27       	eor	r31, r31
 21e:	e1 56       	subi	r30, 0x61	; 97
 220:	ff 4f       	sbci	r31, 0xFF	; 255
 222:	e0 81       	ld	r30, Z
 224:	e0 52       	subi	r30, 0x20	; 32
 226:	8e 2f       	mov	r24, r30
 228:	86 95       	lsr	r24
 22a:	28 2f       	mov	r18, r24
 22c:	33 27       	eor	r19, r19
 22e:	76 e0       	ldi	r23, 0x06	; 6
 230:	22 0f       	add	r18, r18
 232:	33 1f       	adc	r19, r19
 234:	7a 95       	dec	r23
 236:	e1 f7       	brne	.-8      	; 0x230 <__vector_4+0xc4>
 238:	8e 2f       	mov	r24, r30
 23a:	99 27       	eor	r25, r25
 23c:	81 70       	andi	r24, 0x01	; 1
 23e:	90 70       	andi	r25, 0x00	; 0
 240:	88 0f       	add	r24, r24
 242:	99 1f       	adc	r25, r25
 244:	28 2b       	or	r18, r24
 246:	39 2b       	or	r19, r25
 248:	30 93 6d 00 	sts	0x006D, r19
 24c:	20 93 6c 00 	sts	0x006C, r18
 250:	80 91 6b 00 	lds	r24, 0x006B
 254:	e8 2f       	mov	r30, r24
 256:	ff 27       	eor	r31, r31
 258:	ea 58       	subi	r30, 0x8A	; 138
 25a:	ff 4f       	sbci	r31, 0xFF	; 255
 25c:	e0 81       	ld	r30, Z
 25e:	e0 52       	subi	r30, 0x20	; 32
 260:	8e 2f       	mov	r24, r30
 262:	86 95       	lsr	r24
 264:	28 2f       	mov	r18, r24
 266:	33 27       	eor	r19, r19
 268:	68 94       	set
 26a:	15 f8       	bld	r1, 5
 26c:	22 0f       	add	r18, r18
 26e:	33 1f       	adc	r19, r19
 270:	16 94       	lsr	r1
 272:	e1 f7       	brne	.-8      	; 0x26c <__vector_4+0x100>
 274:	8e 2f       	mov	r24, r30
 276:	99 27       	eor	r25, r25
 278:	81 70       	andi	r24, 0x01	; 1
 27a:	90 70       	andi	r25, 0x00	; 0
 27c:	88 0f       	add	r24, r24
 27e:	99 1f       	adc	r25, r25
 280:	28 2b       	or	r18, r24
 282:	39 2b       	or	r19, r25
 284:	30 93 69 00 	sts	0x0069, r19
 288:	20 93 68 00 	sts	0x0068, r18
 28c:	1b c0       	rjmp	.+54     	; 0x2c4 <__vector_4+0x158>
 28e:	80 91 6e 00 	lds	r24, 0x006E
 292:	90 91 6f 00 	lds	r25, 0x006F
 296:	04 96       	adiw	r24, 0x04	; 4
 298:	90 93 6f 00 	sts	0x006F, r25
 29c:	80 93 6e 00 	sts	0x006E, r24
 2a0:	80 91 6c 00 	lds	r24, 0x006C
 2a4:	90 91 6d 00 	lds	r25, 0x006D
 2a8:	04 96       	adiw	r24, 0x04	; 4
 2aa:	90 93 6d 00 	sts	0x006D, r25
 2ae:	80 93 6c 00 	sts	0x006C, r24
 2b2:	80 91 68 00 	lds	r24, 0x0068
 2b6:	90 91 69 00 	lds	r25, 0x0069
 2ba:	04 96       	adiw	r24, 0x04	; 4
 2bc:	90 93 69 00 	sts	0x0069, r25
 2c0:	80 93 68 00 	sts	0x0068, r24
 2c4:	42 e0       	ldi	r20, 0x02	; 2
 2c6:	69 e8       	ldi	r22, 0x89	; 137
 2c8:	70 e0       	ldi	r23, 0x00	; 0
 2ca:	80 91 6e 00 	lds	r24, 0x006E
 2ce:	90 91 6f 00 	lds	r25, 0x006F
 2d2:	68 d2       	rcall	.+1232   	; 0x7a4 <spieeprom_read>
 2d4:	42 e0       	ldi	r20, 0x02	; 2
 2d6:	6b e8       	ldi	r22, 0x8B	; 139
 2d8:	70 e0       	ldi	r23, 0x00	; 0
 2da:	80 91 6c 00 	lds	r24, 0x006C
 2de:	90 91 6d 00 	lds	r25, 0x006D
 2e2:	60 d2       	rcall	.+1216   	; 0x7a4 <spieeprom_read>
 2e4:	42 e0       	ldi	r20, 0x02	; 2
 2e6:	6d e8       	ldi	r22, 0x8D	; 141
 2e8:	70 e0       	ldi	r23, 0x00	; 0
 2ea:	80 91 68 00 	lds	r24, 0x0068
 2ee:	90 91 69 00 	lds	r25, 0x0069