Why is my PIC not blinking its leds?

Question

I am trying to get started with pic24's, specifically the PIC24FJ64GA002, and I have looked in the datasheet at the registers and whatnot, but I still cannot get it to blink the leds. When I run it via debug it runs correctly, but when I try to actually run it on the pic it seems to not run at all.

I am using an external Oscillator, a 8MHZ Oscillator specifically, connected to pins 9(OSCI) and 10 (OSCO). Compiler is C30 in Mplab.

Datasheet link is: http://ww1.microchip.com/downloads/en/DeviceDoc/39881D.pdf

The code is below

//include basic header definition
#include <p24FJ64GA002.h>

//config
_CONFIG2(0x0200);
_CONFIG1(0x0800);

int i;

//main loop
int main(void)
{

   OSCCON = 0x2280;  //select external OSC, no PLL
   AD1PCFG      = 0xFFFF;  //set to all digital I/O
   TRISA = 0x0000;  //configure all PortA as output

   while(1)    //Loop forever
   {
  LATAbits.LATA0 = 1; //RA0 = 1
  Wait();
  LATAbits.LATA0 = 1; //RA0 = 1
  Wait(); 
   }

}


int Wait(void) // gives me a nice delay of 1/3rd a second or so
{
for (int i = 0; i < 30000; i++)
 { 
  for (int i = 0; i < 30; i++);
    }

}

Answer 1

Thank you guys for all your help, but it was that I set the config bits wrong, when I set them in the config editor in mplab all works well.

Thank you for all your help!

Answer 2

You need to go hi, wait, then lo, wait... you are just going hi, wait, hi, wait.

   while(1)    //Loop forever
   {
  LATAbits.LATA0 = 1; //RA0 = 1
  Wait();
  LATAbits.LATA0 = 0; //RA0 = 1
  Wait(); 
   }

Answer 3

What optimization level are you compiling with? If it's only working in debug, it's possible the optimizer is reducing the whole Wait() function to a no-op. Try declaring `volatile int i'.