main.c

来自「开发环境ADSP6++,EBF_561开发板所有源代码」· C语言 代码 · 共 75 行

#include "system.h"
#include "test.h"
#include "adv7171.h"
#include "video.h"

bool IsPAL = 1;

void Delay(DWORD value)
{
	DWORD i;
	for(i = 0; i < value; i++);
}

void Init_SDRAM(void)
{
	*pEBIU_SDRRC	= 0x00000817;	//SDRAM Refresh Rate Control Register
	*pEBIU_SDBCTL	= 0x00000013;	//SDRAM Memory Bank Control Register
	*pEBIU_SDGCTL	= 0x0091998d;	//SDRAM Memory Global Control Register
}

void Init_EBIU(void)
{
	*pEBIU_AMBCTL0	= 0x7bb07bb0;
	*pEBIU_AMBCTL1	= 0xa4c77bb0;
	*pEBIU_AMGCTL	= 0x00ff;
}

BOOL VideoOutInit(BOOL IsPAL)
{
	*pCtrlReg2_S = 0x00; // PPI CLK for ADV7171
	Delay(100);

	ADV7171_ExitReset(); // ADV7171 exit Reset

	// Initialize ADV7171
	if (!Init_ADV7171(IsPAL))
		return FALSE;

	// Initialize frame buffer
	if (IsPAL)
		PalVideoOutFrameBufferInit();
	else
		NtscVideoOutFrameBufferInit();

	// Initialize DMA for ADV7171
	Init_ADV7171_DMA(IsPAL);

	// Initialize PPI for ADV7171
	Init_ADV7171_PPI();

	// Enable DMA
	*pDMA1_1_CONFIG |= DMAEN;

	asm("ssync;");

	// Enable PPI
	*pPPI1_CONTROL |= PORT_EN;

	return TRUE;
}

main()
{
	Set_PLL( (short)(CORECLK/CLKIN), (short)(CORECLK/SYSCLK));
//---------------------------------------------------------
//	If you use an emulator and use Debugger to 	initialize
//  SDRAM,please eliminate the "Init_SDRAM()" function 
//---------------------------------------------------------						
	//Init_SDRAM();
	Init_EBIU();
	VideoOutInit(IsPAL);
	while(1);
}