lcd.c

这是一个LCD的程序

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File
#include "f2812a.h"

#define LCDDELAY 1
#define LCDCMDTURNON 0x3f
#define LCDCMDTURNOFF 0x3e
#define LCDCMDSTARTLINE 0xc0
#define LCDCMDPAGE 0xb8
#define LCDCMDVERADDRESS 0x40
#define CTRGR *(int *)0x108000
#define CTRLCDCMDR *(int *)0x108001
#define CTRKEY *(int *)0x108001
#define CTRLCDCR *(int *)0x108002
#define CTRCLKEY *(int *)0x108002
#define CTRLCDLCR  *(int *)0x108003
#define CTRLCDRCR *(int *)0x108004
#define CTRLA *(int *)0x108005
#define CTRLR *(int *)0x108007

void Delay(unsigned int nTime);		// 延时子程序
void TurnOnLCD();			// 打开显示
void LCDCLS();				// 清除屏幕显示内容

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}
};

void main(void)
{
   int i,nCount=0,nBW=0;
   InitSysCtrl();  

	CTRGR=0x80;		// 初始化ICETEK-CTR
	Delay(LCDDELAY);
	CTRGR=0x0;
	Delay(LCDDELAY);
	CTRGR=0x80;
	Delay(LCDDELAY);
	CTRLR=0;			// 关闭东西方向的交通灯
	Delay(LCDDELAY);
	CTRLR=0x40;	// 关闭南北方向的交通灯
	Delay(LCDDELAY);
	TurnOnLCD();				// 打开显示
	LCDCLS();				// 清除显示内存
	CTRLCDCMDR=LCDCMDSTARTLINE;		// 设置显示起始行
	Delay(LCDDELAY);
	CTRLCDCR=0;
	Delay(LCDDELAY);
	for (;;)
	{
		CTRLCDCMDR=LCDCMDPAGE;		// 设置操作页=0
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		CTRLCDCMDR=LCDCMDVERADDRESS;	// 起始列=0
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		for ( i=0;i<8;i++ )
		{
			CTRLCDLCR=( nBW==0 )?(ledkey[nCount][i]):(~ledkey[nCount][i]);	// 屏幕左侧第1至8行第i列赋值							port8002=0;			// (赋值后当前操作列自动加1，所以不需设置)
			Delay(LCDDELAY);
			CTRLCDCR=0;
			Delay(LCDDELAY);
		}
		Delay(4096); //延时子程序
		nCount++;
		if ( nCount==10 )
		{
			nCount=0;
			nBW=1-nBW;
		}
	}
} 	


void Delay(unsigned int nDelay)
{
	int ii,jj,kk=0;
	for ( ii=0;ii<nDelay;ii++ )
	{
		for ( jj=0;jj<60;jj++ )
		{
			kk++;
		}
	}
}

void TurnOnLCD()
{
	CTRLCDCMDR=LCDCMDTURNON;
	Delay(LCDDELAY);
	CTRLCDCR=0;
	Delay(2048);  
	CTRLCDCMDR=LCDCMDSTARTLINE;
	Delay(LCDDELAY);
	CTRLCDCR=0;
	Delay(LCDDELAY);
}

void LCDCLS()
{
	int i,j;
	CTRLCDCMDR=LCDCMDSTARTLINE;
	Delay(LCDDELAY);
	CTRLCDCR=0;
	Delay(LCDDELAY);
	for ( i=0;i<8;i++ )
	{
		CTRLCDCMDR=LCDCMDPAGE+i;
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		CTRLCDCMDR=LCDCMDVERADDRESS;
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		for ( j=0;j<64;j++ )
		{
			CTRLCDLCR=0;
			Delay(LCDDELAY);
			CTRLCDCR=0;
			Delay(LCDDELAY);
		}
		CTRLCDCMDR=LCDCMDPAGE+i;
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		CTRLCDCMDR=LCDCMDVERADDRESS;
		Delay(LCDDELAY);
		CTRLCDCR=0;
		Delay(LCDDELAY);
		for ( j=0;j<64;j++ )
		{
			CTRLCDRCR=0;
			Delay(LCDDELAY);
			CTRLCDCR=0;
			Delay(LCDDELAY);
		}
	}
}