CODEWITHSUNDEEP
ceclipse
Hoobla
Hoobla

Reputation: 79

Compiler error while programming ic

MY friend is trying to program a shift register ic 74hc595 with 8051 microcontroller attached to display a moving led message. But my compiler is giving me error in send_data(alf(a));

Here is code->

#include<8051.h>
#define clock P2_0
#define data_bit P2_1
#define latch P2_2
#define shift 8
void delay(unsigned int i)
{
    int k=0;
    while(k<i)
    {
        k++;
    }
}
void send_data(unsigned char temp)
   {
   unsigned char i;
   unsigned char dd;
   latch=0;
   clock=0;
   for(i=0;i<shift;i++){
   dd=temp>>i;
   if(dd&1)
                        data_bit=1;
             else
                        data_bit=0;
   clock=1;
   clock=0;
                       }
   latch=1;
   }
unsigned char alf[]={16,6,6,16};
void main()
{
unsigned char a;
  while(1){
   for(a=0;a<4;a++)
   {
   send_data(alf(a));
   delay(10000);
   }
  }
}

Since its my friend who is making, i dont have much info about it. But if anything else is needed, please tell and i will provide but please help me solve this prob. Thanks.

Upvotes: 0

Views: 89

Answers (2)

Chinna
Chinna

Reputation: 4002

In your case alf is an array not a function. If alf is a function then you can call alf(a). For array you need to pass index so you need to call alf[a].

Upvotes: 0

David Ranieri
David Ranieri

Reputation: 41045

send_data(alf(a));

should be

send_data(alf[a]);

On the other hand, the body of delay can be optimized (and removed) by your compiler, take a look to the volatile keyword

Upvotes: 3

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