dm642main.c

这是测试SEED-VPM642系统中第3通路的图像显示（U23）的程序。

/********************************************************************/
/*  Copyright 2004 by SEED Incorporated.							*/
/*  All rights reserved. Property of SEED Incorporated.				*/
/*  Restricted rights to use, duplicate or disclose this code are	*/
/*  granted through contract.									    */
/*  															    */
/********************************************************************/
#include <csl.h>
#include <csl_emifa.h>
#include <csl_irq.h>
#include <csl_chip.h>

#include "seeddm642.h"
#include "seeddm642_uart.h"

/*SEEDDM642的emifa的设置结构*/
EMIFA_Config Seeddm642ConfigA ={
	   0x00052078,/*gblctl EMIFA(B)global control register value */
	   			  /*将CLK6、4、1使能；将MRMODE置1；使能EK2EN,EK2RATE*/
	   0xffffffd3,/*cectl0 CE0 space control register value*/
	   			  /*将CE0空间设为SDRAM*/
	   0x73a28e01,/*cectl1 CE1 space control register value*/
	   			  /*Read hold: 1 clock;
	   			    MTYPE : 0000,选择8位的异步接口
	   			    Read strobe ：001110；14个clock宽度
	   			    TA：2 clock; Read setup 2 clock;
	   			    Write hold :2 clock; Write strobe: 14 clock
	   			    Write setup :7 clock
	   			    --					 ---------------
	   			  	  \		 14c		/1c
	   			 	   \----------------/ */
	   0x22a28a22, /*cectl2 CE2 space control register value*/
       0x22a28a42, /*cectl3 CE3 space control register value*/
	   0x57115000, /*sdctl SDRAM control register value*/
	   0x0000081b, /*sdtim SDRAM timing register value*/
	   0x001faf4d, /*sdext SDRAM extension register value*/
	   0x00000002, /*cesec0 CE0 space secondary control register value*/
	   0x00000002, /*cesec1 CE1 space secondary control register value*/
	   0x00000002, /*cesec2 CE2 space secondary control register value*/
	   0x00000073 /*cesec3 CE3 space secondary control register value*/	
};

extern far void vectors();

/*此程序可将四个采集口的数据经过Video Port0送出*/
void main()
{
	
/*-------------------------------------------------------*/
/* perform all initializations                           */
/*-------------------------------------------------------*/
	/*Initialise CSL，初始化CSL库*/
	CSL_init();
/*----------------------------------------------------------*/
	/*EMIFA的初始化，将CE0设为SDRAM空间，CE1设为异步空间
	 注，DM642支持的是EMIFA，而非EMIF*/
	EMIFA_config(&Seeddm642ConfigA);
/*----------------------------------------------------------*/
	/*中断向量表的初始化*/
	//Point to the IRQ vector table
    IRQ_setVecs(vectors);
   
/*----------------------------------------------------------*/
/*测试SEEDVPM642的LED*/
    GPIO_RSET(GPGC,0x0);/*将GPIO0不做为GPINT使用*/
    GPIO_RSET(GPEN,0x108);
	GPIO_RSET(GPDIR,0x108);/*将GPIO0做为输出*/
	for(;;)
	{
		/*GPIO3输出为高*/
		GPIO_RSET(GPVAL,0x8);
    	SEEDDM642_waitusec(5000);
    	/*GPIO3输出为低*/
		GPIO_RSET(GPVAL,0x0);
    	SEEDDM642_waitusec(5000);
    	/*GPIO8输出为高*/
		GPIO_RSET(GPVAL,0x100);
    	SEEDDM642_waitusec(5000);
    	/*GPIO8输出为低*/
		GPIO_RSET(GPVAL,0x0);
    	SEEDDM642_waitusec(5000);
    }
}