dmatest.c

NXP LPC系列AMR7的开发程序源码（LCD

/*****************************************************************************
 *   dmatest.c:  main C entry file for NXP LPC23xx/24xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.20  ver 1.00    Prelimnary version, first Release
 *
 * Note:
 *  After power-up the controller get clock from internal RC oscillator that
 * is unstable and may fail with J-Link auto detect, therefore adaptive clocking
 * should always be used. The adaptive clock can be select from menu:
 *  Project->Options..., section Debugger->J-Link/J-Trace  JTAG Speed - Adaptive.
 *
 ******************************************************************************/
#include "LPC230x.h"                        /* LPC23xx/24xx definitions */
#include "type.h"
#include "irq.h"
#include "target.h"
#include "dma.h"

extern volatile DWORD DMATCCount;

/******************************************************************************
**   Main Function  main()
******************************************************************************/
int main (void)
{	
	DWORD i;
	DWORD *src_addr, *dest_addr;

        TargetResetInit();

	src_addr = (DWORD *)DMA_SRC;
	dest_addr = (DWORD *)DMA_DST;
	for ( i = 0; i < DMA_SIZE/4; i++ )
	{
		*src_addr = i;
		*dest_addr = 0;
		src_addr++;
		dest_addr++;
	}
	
	DMA_Init( M2M );
	GPDMA_CH0_CFG |= 0x08001;	/* Enable channel and IE bit */

	while ( !DMATCCount );		/* Wait until DMA is done */

	/* Verify result */
   	src_addr = (DWORD *)DMA_SRC;
	dest_addr = (DWORD *)DMA_DST;
	for ( i = 0; i < DMA_SIZE/4; i++ )
	{
		if ( *src_addr != *dest_addr )
		{
			while ( 1 );	/* fatal error */
		}
		src_addr++;
		dest_addr++;
	}
    return 0;
}

/******************************************************************************
**                            End Of File
******************************************************************************/