[Icc-avr] dumb pointer question

[Paul Mateer]

Hello All.....
Please tell me what I'm doing wrong here:

void Process_Cmd(void)
{
  unsigned char *P_PORT;
  int w_port, w_pin;

  w_port = WHICH_PORT & 0xF0;
  w_pin = WHICH_PORT & 0x0F;

  if(w_port == 0x10) P_PORT = &PORTA;   // PORT A
  if(w_port == 0x20) P_PORT = &PORTB;   // PORT B
  if(w_port == 0x30) P_PORT = &PORTC;   // PORT C
  if(w_port == 0x40) P_PORT = &PORTD;   // PORT D

  if(w_pin != 8)
   {
     if(PORT_CMD == OFF) P_PORT &= ~w_pin;
     if(PORT_CMD == ON) P_PORT |= w_pin;
   }else
     {
       if(PORT_CMD == OFF) P_PORT = 0;
       if(PORT_CMD == ON) P_PORT = 0xFF;
     }
}

//------------------------------------------------------------------------------------------------

I always seem to stumble when it comes to pointers
-- 
Paul Mateer, AA9GG
Elan Engineering Corp.
www.elanengr.com
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