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View Code? Open in Web Editor NEWAn Open Source SMPTE Linear Timecode Generator Based on ATmega328P(Arduino UNO).
License: MIT License
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joconsol zeshan-xeesoft yocomgsiu kostassite graphicsvending rayaan92 whstudio123 bi1ing jwillich octopuswen its-all-waves amp-vtv xrjulien kearnhardt seeb73openltc's Issues
Using external interrupt source instead of timer
I love this project and I tried to extend it. After some testing I saw that the internal timer of the Arduino Uno is not very accurate (after 2 hours it was 2 seconds off).
My idea was to use some accurate external frequency generator with a frequency of 4khz (80 bits * 2 rising/falling * 25 fps) to be used for the generation of the time code. Sadly I am a high level programmer so I don't understand all the timer registers. Maybe you could guide my way?
The basic idea is:
#include <avr/io.h>
#include <avr/interrupt.h>
volatile unsigned char hourCount = 0;
volatile unsigned char minuteCount = 0;
volatile unsigned char secondCount = 0;
volatile unsigned char frameCount = 0;
volatile unsigned char bitCount = 0;
volatile unsigned char updateCnt = 0;
volatile unsigned char currentBit = 0;
volatile unsigned char lastLevel = 0;
volatile unsigned char polarBit = 0;
int main(void)
{
/* What do I need here?
DDRD = 0b00101000;
DDRB = 0b00110000;
//50% PWM Ground Level
TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM01) | _BV(WGM00);
TCCR0B = _BV(WGM02) | _BV(CS00);
OCR0A = 1;
OCR0B = 0;
//Set Output to Ground Level
TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM21) | _BV(WGM20);
TCCR2B = _BV(WGM22) | _BV(CS20);
OCR2A = 127;
OCR2B = 63;
//Per 1/2-Bit Interrupt
TCCR1A = 0b00 << WGM10;
TCCR1B = 0b01 << WGM12 | 0b001 << CS10;
OCR1A = 3995;//3999@25fps
TIMSK1 = 1 << OCIE1A;
sei();
*/
attachInterrupt(digitalPinToInterrupt(2), generateTimecode, RISING);
while(1)
{
}
}
void setLevel(void)
{
switch(bitCount)
{
case 0:
polarBit = 0;
currentBit = (((frameCount % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 1:
currentBit = (((frameCount % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 2:
currentBit = (((frameCount % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 3:
currentBit = (((frameCount % 10) >> (4 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 4:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 5:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 6:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 7:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 8:
currentBit = (((frameCount / 10 % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 9:
currentBit = (((frameCount / 10 % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 10:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 11:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 12:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 13:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 14:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 15:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 16:
currentBit = (((secondCount % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 17:
currentBit = (((secondCount % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 18:
currentBit = (((secondCount % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 19:
currentBit = (((secondCount % 10) >> (4 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 20:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 21:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 22:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 23:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 24:
currentBit = (((secondCount /10 % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 25:
currentBit = (((secondCount /10 % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 26:
currentBit = (((secondCount /10 % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 27:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 28:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 29:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 30:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 31:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 32:
currentBit = (((minuteCount % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 33:
currentBit = (((minuteCount % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 34:
currentBit = (((minuteCount % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 35:
currentBit = (((minuteCount % 10) >> (4 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 36:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 37:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 38:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 39:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 40:
currentBit = (((minuteCount / 10 % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 41:
currentBit = (((minuteCount / 10 % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 42:
currentBit = (((minuteCount / 10 % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 43:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 44:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 45:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 46:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 47:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 48:
currentBit = (((hourCount % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 49:
currentBit = (((hourCount % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 50:
currentBit = (((hourCount % 10) >> (3 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 51:
currentBit = (((hourCount % 10) >> (4 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 52:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 53:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 54:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 55:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 56:
currentBit = (((hourCount / 10 % 10) >> (1 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 57:
currentBit = (((hourCount / 10 % 10) >> (2 - 1)) & 1);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 58:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 59:
currentBit = (polarBit);
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 60:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 61:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 62:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 63:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 64:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 65:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 66:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 67:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 68:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 69:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 70:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 71:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 72:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 73:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 74:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 75:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 76:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 77:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 78:
currentBit = 0;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
case 79:
currentBit = 1;
OCR2B = (lastLevel = (updateCnt?(currentBit?(!lastLevel):(lastLevel)):(!lastLevel))?(1):(0))?(100):(27);
if((updateCnt)&(!currentBit)){polarBit=!polarBit;};
break;
default:
OCR2B = 63;
}
}
void timeUpdate(void)
{
if(bitCount < 79)
{
bitCount ++;
}
else
{
bitCount = 0;
if(frameCount < 24)
{
frameCount ++;
}
else
{
frameCount = 0;
if(secondCount < 59)
{
secondCount ++;
}
else
{
secondCount = 0;
if(minuteCount < 59)
{
minuteCount ++;
}
else
{
minuteCount = 0;
if(hourCount < 23)
{
hourCount ++;
}
else
{
hourCount = 0;
}
}
}
}
}
}
void generateTimecode(void)
{
setLevel();
if(updateCnt == 0)
{
updateCnt ++;
}
else
{
updateCnt = 0;
timeUpdate();
}
}
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