CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support
4 Decimal, 7-Segment counter (0-9999)

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
TselelTJ



Joined: 10 Mar 2010
Posts: 3

View user's profile Send private message

4 Decimal, 7-Segment counter (0-9999)
PostPosted: Wed Mar 10, 2010 11:27 am     Reply with quote
Good Day ppl.

I'm taking my baby steps with ccs code.
May somebody help me with the code for the following:

The cct must count from 0 to 9999 and it uses a switch which stops the count at any moment, when switch closes it starts again at 0.

1. PIC18F2220
2. Switch at RC0.
3. Bus Wire [RB0-RB7] to U1-U4 (74HC373)
4. Four 7-Segment displays (Common Anode)
5. RC1-RC4 LE wires to U1-U4 (74HC373)
6. OE is Grounded (74HC373)

Thanks in advance.
TselelTJ



Joined: 10 Mar 2010
Posts: 3

View user's profile Send private message

PostPosted: Fri Mar 12, 2010 3:26 am     Reply with quote
I was able to do the ff but now i need help with the switch, If the switch is open all segments must be off and when closed it must start from 0.


Code:

#include "Counter_7Seg.h"

char map[10]={0xc0,oxf9,0xa4,0xb0,0x99,0x82,0xf8,0x80,0x09};

void main (){

int i, j, k, l;

       port_b_pullups(TRUE);
       setup_adc_ports(NO_ANALOGS|VSS_VDD);
       setup_adc(ADC_OFF|ADC_TAD_MUL_0);
       setup_spi(SPI_SS_DISABLED);
       setup_wdt(WDT_OFF);
       setup_timer_0(RTCC_INTERNAL);
       setup_timer_1(T1_DISABLED);
       setup_timer_2(T2_DISABLED,0,1);
       setup_comparator (NC_NC_NC);
       setup_vref(FALSE);
//Setup_Oscillator parameter not selected from Intr Oscillator Config tab

    i=0;
    j=0;
    k=0;
    l=0;

    delay_ms(1000);
    while(TRUE)
    {
     if(input(PIN_C0))
     output_b(map[i]);
     output_high(PIN_C4);
     delay_ms(30);
     output_low(PIN_C4);

     if(input(PIN_C0))
     output_b(map[j]);
     output_high(PIN_C3);
     delay_ms(30);
     output_low(PIN_C3);

     if(input(PIN_C0))
     output_b(map[k]);
     output_high(PIN_C2);
     delay_ms(30);
     output_low(PIN_C2);

     if(input(PIN_C0))
     output_b(map[l]);
     output_high(PIN_C1);
     delay_ms(30);
     output_low(PIN_C1);

     if(i<10)
     {
      i++;
      }
            if(i==10)
      {
       j++;
       i=0;
       }
            if(j==10)
      {
       k++;
       j=0;
       }
            if(k==10)
      {
       l++;
       j=0;
       }
            if(l==10)
       {
        i=0;
        j=0;
        k=0;
        l=0;}
       }
}
jbmiller



Joined: 07 Oct 2006
Posts: 73
Location: Greensville,Ontario

View user's profile Send private message

PostPosted: Sun Mar 14, 2010 7:09 am     Reply with quote
Just a tip on coding...
It'll help if you name variables with what they mean instead of i,j,k,...
Same goes true for I/P pins...tens_digit,ones_digit,....

While you may remember them for the next few days, a week or so from now, you'll be asking, What does this mean !! Been there..did that !

It also helps everyone else trying to help you out !

Also if you need to reassign a pin, it can be done with one line of code at the beginning, instead of looking for all of them in a few hundred lines of code!

Hope this helps

Jay
TselelTJ



Joined: 10 Mar 2010
Posts: 3

View user's profile Send private message

PostPosted: Thu Mar 18, 2010 8:17 am     Reply with quote
Here is the working code, I finally got it right...

Code:
#include "Assignment.h"

char map[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

void main(){

int8 DD1=0, DD2=0, DD3=0, DD4=0;

   port_b_pullups(TRUE);
   setup_adc_ports(NO_ANALOGS|VSS_VDD);
   setup_adc(ADC_OFF|ADC_TAD_MUL_0);
   setup_spi(SPI_SS_DISABLED);
   setup_wdt(WDT_OFF);
   setup_timer_0(RTCC_INTERNAL);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DISABLED,0,1);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
//Setup_Oscillator parameter not selected from Intr Oscillotar Config tab
   
   output_high(PIN_C4);
   output_high(PIN_C3);
   output_high(PIN_C2);
   output_high(PIN_C1);
   
   while(TRUE)
   {
   if(input(PIN_C0))
   {
   output_b(0xff);
   output_b(map[DD1]);
   output_high(PIN_C4);
   delay_ms(30);
   output_low(PIN_C4);
   
   output_b(map[DD2]);
   output_high(PIN_C3);
   delay_ms(30);
   output_low(PIN_C3);
   
   output_b(map[DD3]);
   output_high(PIN_C2);
   delay_ms(30);
   output_low(PIN_C2);
   
   output_b(map[DD4]);
   output_high(PIN_C1);
   delay_ms(30);
   output_low(PIN_C1);
   
   if(DD1<10)
   {
   DD1++;
   }
      if(DD1==10)
   {
   DD1=0;
   DD2++;
   }
       if(DD2==10)
   {
   DD2=0;
   DD3++;
   }
       if(DD3==10)
   {
   DD3=0;
   DD4++;
   }
       if(DD4==10)
   DD4=0;
   }
   else
   {
   output_high(PIN_C4);
   output_high(PIN_C3);
   output_high(PIN_C2);
   output_high(PIN_C1);
   output_b(0xff);
   DD1=0;
   DD2=0;
   DD3=0;
   DD4=0;
   }

}
}
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group