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Decemical to 7-segments Convertion

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Userrr

Joined: 09 Jul 2004
Posts: 40
Location: Europe

Decemical to 7-segments Convertion

Posted: Mon Nov 29, 2004 2:13 pm

I write example funct to write decemical int32 word to 9 LED 7-segments
displ. but maybe it is not so correct (maybe it can be more optimiz.)

Code:

void digit_select(int8 d)
{
switch (d) {
case 1: PORTC=0b01111111; break;
case 2: PORTC=0b10111111; break;
case 3: PORTC=0b11011111; break;
case 4: PORTC=0b11101111; break;
case 5: PORTC=0b11110111; break;
case 6: PORTC=0b11111011; break;
case 7: PORTC=0b11111101; break;
case 8: PORTC=0b11111110; break;
}
}

void segment_select(int8 s,boolean point)
{
int8 plus=0;
if(point==TRUE) plus=128;
switch (s) {
case 0: PORTD=0b11000000+plus; break;
case 1: PORTD=0b11111001+plus; break;
case 2: PORTD=0b10100100+plus; break;
case 3: PORTD=0b10110000+plus; break;
case 4: PORTD=0b10011001+plus; break;
case 5: PORTD=0b10010010+plus; break;
case 6: PORTD=0b10000010+plus; break;
case 7: PORTD=0b11111000+plus; break;
case 8: PORTD=0b10000000+plus; break;
case 9: PORTD=0b10010000+plus; break;

}
}

void output_int32_to_LED(unsigned int32 D1,int8 sel,boolean zer)
{
unsigned int delay=5;
char icount;
char zero_detect=0;

// *********************************** Send Ten Millions
icount=0;
while(D1>9999999)
   {
D1 = D1 - 10000000;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(8);
segment_select(icount,FALSE);
delay_ms(delay+h);
led_n=8;
}
// *********************************** Send Millions
icount=0;
while(D1>999999)
   {
D1 = D1 - 1000000;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(7);
segment_select(icount,FALSE);
delay_ms(delay+g);
led_n=7;
}
// *********************************** Send Hungreds Thousands
icount=0;
while(D1>99999)
   {
D1 = D1 - 100000;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(6);
segment_select(icount,FALSE);
delay_ms(delay+f);
led_n=6;
}
// *********************************** Send Ten Thousands
icount=0;
while(D1>9999)
   {
D1 = D1 - 10000;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(5);
segment_select(icount,FALSE);
delay_ms(delay+e);
led_n=5;
}
// *********************************** Send Thousands
icount=0;
while(D1>999)
   {
D1 = D1 - 1000;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(4);
segment_select(icount,FALSE);
delay_ms(delay+d);
led_n=4;
}
// *********************************** Send Hungreds
icount=0;
while(D1>99)
   {
D1 = D1 - 100;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(3);
segment_select(icount,FALSE);
delay_ms(delay+c);
led_n=3;
}
// *********************************** Send Tens
icount=0;
while(D1>9)
   {
D1 = D1 - 10;
icount++;
zero_detect=1;
   }
if(icount!=0 || zero_detect==1 || zer==TRUE)
{
digit_select(2);
segment_select(icount,TRUE);
delay_ms(delay+b);
led_n=2;
}
// *********************************** Send last Unit's
digit_select(1);
segment_select(D1,FALSE);
// delay_ms(delay+a);
led_n=1;

}

Maybe somebody help?

Guest


Posted: Tue Nov 30, 2004 8:13 am

visti this site.... http://c.snippets.org/snip_lister.php?fname=str27seg.c

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