ledarray.c

一些DSP2407源程序

#include "2407c.h"

ioport unsigned int port8005;

void Delay(unsigned int nTime);		// 延时子程序
void RefreshLEDArray();			// 刷新显示
void SetLEDArray(int nNumber);		// 修改显示内容
void InitDSP();

unsigned char ledbuf[8],ledx[8];
unsigned char ledkey[10][8]=
{
	{0x00,0x00,0x7C,0x82,0x82,0x82,0x7C,0x00},	//0
	{0x00,0x00,0x00,0x84,0xFE,0x80,0x00,0x00},	//1
	{0x00,0x00,0x84,0xC2,0xA2,0x92,0x8C,0x00},	//2
	{0x00,0x00,0x44,0x92,0x92,0x92,0x6C,0x00},
	{0x00,0x00,0x30,0x28,0x24,0xFE,0x20,0x00},
	{0x00,0x00,0x4E,0x92,0x92,0x92,0x62,0x00},
	{0x00,0x00,0x7C,0x92,0x92,0x92,0x64,0x00},
	{0x00,0x00,0x02,0xC2,0x32,0x0A,0x06,0x00},
	{0x00,0x00,0x6C,0x92,0x92,0x92,0x6C,0x00},
	{0x00,0x00,0x4C,0x92,0x92,0x92,0x7C,0x00}
};

main()
{
	unsigned int uWork;
	int nCount;

	InitDSP();
	for ( nCount=0;nCount<8;nCount++ )
	{
		ledbuf[nCount]=0x0ff;		// 显示为空白
		ledx[nCount]=(1<<nCount);	// 生成显示列控制字
	}
	RefreshLEDArray();
	nCount=0;
	for (;;)
	{
		SetLEDArray(nCount);
		Delay(256);
		nCount++;
		nCount%=10;
	}
}               

void Delay(unsigned int nDelay)
{
	int ii,jj,kk=0;
	for ( ii=0;ii<nDelay;ii++ )
	{
		for ( jj=0;jj<64;jj++ )
		{
			RefreshLEDArray();
			kk++;
		}
	}
}

void RefreshLEDArray()
{
	int i;
	for ( i=0;i<8;i++ )
	{
		port8005=ledx[i];
		port8005=ledbuf[i];
	}
}

void SetLEDArray(int nNumber)
{
	int i;
	for ( i=0;i<8;i++ )
		ledbuf[i]=~ledkey[nNumber][7-i];
}

void InitDSP()
{
	*WDCR=0x6f;
	*WDKEY=0x5555;
	*WDKEY=0xaaaa;    
	*SCSR1=0x81fe;    //40m      
	*IMR=0;
	*IFR=0xffff;
}