A2D Interrupt

Development Boards MicroMod
1

I set the A2D in burst mode, turned it on and got it working by pulling the done bit. Now I’m trying to take it a step farther and use the A2D interrupt to get the conversion. However, I cannot seem to get it working. I have a book here I’m following pretty much verbatim and read the VIC and A2D parts of the datasheet. Cannot see what I’m missing. The code doesn’t vector to the IRQ.

If anybody can spot something / has any suggestions they would be greatly appreciated.

Thanks!

CODE~

#include "lpc246x.h"

//Globals
int sample = 0;		// Declaired here so debugger has visibility

void A2Disr( void ) __irq
{
	// Place latest sammple in memory
	sample 		= AD0GDR;

	// Clear A2D interrupt flag
//	AD0STAT 	&= 0xFFFF7FFF;

	// Write to signal end of IRQ
//	VICVectAddr = 0x00000000;
}

int main( void )
{
	// Configure ADC0.0	- Page 662
	PCONP		= 0x00001000;	// Power on ADC - Page 60
	APBDIV		= 0x00000002;	// Set Pclk to 30Mhrz
	PCLKSEL1	= 0x00000000;	// Set clock rate for ADC - Page 54
	PINSEL1  	= 0x00004000;	// Connect AD0.0 to Port 0.23 - Page 175	
	PINMODE0	= 0x00000000;	// Connect pull up resistors to Port0 - Page 183

	AD0CR     	= 0x01210A01;	// Configure ADC - Page 664	
	AD0INTEN	= 0x80;			// Turn on A2D interrupt for all A2D channels

	VICVectAddr18 	= (unsigned)A2Disr;	// Set ISR Address
	VICVectCntl18	= 0x00000024;		// Set priority
	VICIntEnable	|= 0x00040000; 		// Turn connect A2D interrupt to VIC

	while(1);

	return 0;
}