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Input pins not working properly

 
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crukid
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Input pins not working properly
PostPosted: Sat Feb 23, 2008 2:24 am     Reply with quote
Hello to all!!!

I am having a problem on getting the state of my input pins. below is the code.
Code:

#use rs232(baud=2400,xmit=pin_b1,rcv=pin_b2)
#use fast_io(A)

void printID(char *ID);
void alarm();

void main()
{

   int rs_state;
   int rf_pass;
   char rf_id[11];

   set_tris_a(0b10);

while(1)
{
   rf_pass = input(PIN_A1);

   if(!rf_pass)
   {
         output_low(pin_b5);
         output_low(pin_b6);

         gets(rf_id);

         if(rf_id != "" && rf_id != " ")
         {
            printID(rf_id);
         }
    }
}

}

void printID(char *ID)
{
   int i;

   if(ID[1] != 'F' && ID[1] != 'C' && ID != "")
   {

    for(i=1;i<150;i++)
    {
      if(i < 11)
      {
          putc(ID[i]);
      }

      OUTPUT_HIGH(PIN_A0);
      Delay_us(100);
      OUTPUT_LOW(PIN_A0);
      Delay_us(100);
    };

    output_high(pin_b5);
    output_high(pin_b6);
    delay_ms( 750 );
   }

}

void alarm()
{
   int i;

   for(i=0; i<150; ++i)
   {
      OUTPUT_HIGH(PIN_A0);
      Delay_us(80);
      OUTPUT_LOW(PIN_A0);
      Delay_us(80);
   }
}


How this code suppose to work is that when pin A1,assigned to rf_pass, is low the statement inside the IF condtion ,if(!rf_pass),should inside it will execute then will loop after but I am not getting the right response,it seems the pin is not being updated everytime the code loops..hope someone could advice
stefsun



Joined: 23 May 2007
Posts: 22

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PostPosted: Sat Feb 23, 2008 2:46 am     Reply with quote
set_tris_a(0b10); ->set_tris_a(0x02);

int rf_pass; ->int1 rf_pass;
Guest
PostPosted: Sat Feb 23, 2008 4:07 am     Reply with quote
It is still not effective,could it be a bug in the compiler or limitation?
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