HT1621驱动LCD源程序

#ifndef _HT1621_H_
#define _HT1621_H_

//#include "ht1621.h"
#define		HT1621_ADDR1		0
#define		HT1621_ADDR2		1
#define		HT1621_ADDR3		2
#define		HT1621_ADDR4		3
#define		HT1621_ADDR5		4
#define		HT1621_ADDR6		5
#define		HT1621_ADDR7		6
#define		HT1621_ADDR8		7
#define		HT1621_ADDR9		8
#define		HT1621_ADDR10		9
#define		HT1621_ADDR11		10
#define		HT1621_ADDR12		11
#define		HT1621_ADDR13		12
#define		HT1621_ADDR14		13
#define		HT1621_ADDR15		14
#define		HT1621_ADDR16		15
#define		HT1621_ADDR17		16
#define		HT1621_ADDR18		17
#define		HT1621_ADDR19		18
#define		HT1621_ADDR20		19
#define		HT1621_ADDR21		20
#define		HT1621_ADDR22		21
#define		HT1621_ADDR23		22
#define		HT1621_ADDR24		23
#define		HT1621_ADDR25		24
#define		HT1621_ADDR26		25
#define		HT1621_ADDR27		26
#define		HT1621_ADDR28		27
#define		HT1621_ADDR29		28
#define		HT1621_ADDR30		29
#define		HT1621_ADDR31		30
#define		HT1621_ADDR32		31


/*
#define	HT1621_DAT		PA1_OUT  //dat
#define	HT1621_CS			PA3_OUT  //cs
#define	HT1621_WR			PA2_OUT  //clk
*/
//===========================

extern void Ht1621WrByte(uint8 Addr,uint8 Data) ;
extern void Ht1621WrAllData(uint8 Addr,uint8 *p,uint8 DatLong) ;
extern void Ht1621_Init(void) ;

#endif

//--------------------------------------


#include "global.h" 
#include "ht1621.h"


#define	BIAS2	0X40		// 1/2偏压
#define	BIAS3	0X42		// 1/3偏压
#define	COMNUM2	0X00	//2个COM
#define	COMNUM3	0X08	//3个COM
#define	COMNUM4	0X10	//4个COM
//选择LCD模式
#define BIAS   BIAS3|COMNUM4//0x52 1/3duty 4com

#define SYSDIS 0X00//0b1000 0000 0000 关振系统荡器和LCD偏压发生器
#define SYSEN 0X02  //0b1000 0000 0010 打开系统振荡器

#define LCDOFF 0X04  //0b1000 0000 0100 关LCD偏压
#define LCDON 0X06   //0b1000 0000 0110 打开LCD偏压
#define XTAL 0x28    //0b1000 0010 1000 外部接时钟
#define RC256 0X30   //0b1000 0011 0000 内部时钟
#define TONEON 0X12  //0b1000 0001 0010 打开声音输出
#define TONEOFF 0X10 //0b1000 0001 0000 关闭声音输出
#define WDTDIS 0X0A  //0b1000 0000 1010 禁止看门狗


//================================
void _Nop(void)
{
		_asm("nop");_asm("nop");_asm("nop");_asm("nop");
		_asm("nop");_asm("nop");_asm("nop");_asm("nop");	
		_asm("nop");_asm("nop");_asm("nop");_asm("nop");
		_asm("nop");_asm("nop");_asm("nop");_asm("nop");			
}
//delay ms
void DelayMS(uint16 iMs)
{
		uint16 i,j;
		
		for(i=0;i





0;i--)
		{
				Tmp = (*p) ;
				Dat=0;		//++
				if(Tmp&0x01)Dat|=0x08 ;
				if(Tmp&0x02)Dat|=0x04 ;
				if(Tmp&0x04)Dat|=0x02 ;
				if(Tmp&0x08)Dat|=0x01 ;
				
				Dat <<= 4 ;
				Ht1621Wr_Data(Dat,4); //写入数据
				p++;
		}
		HT1621_CS=1;
		_Nop();
}
//*************************************
// 函数名称：Ht1621_Init
// 函数功能：1621初始化
// 入口参数：无
// 出口参数：无
//***************************************
void Ht1621_Init(void)
{
		HT1621_CS=1;
		HT1621_WR=1;
		HT1621_DAT=1;
		DelayMS(50); //延时使LCD工作电压稳定
		Ht1621WrCmd(BIAS); //设置BASE COM
		Ht1621WrCmd(RC256); //使用内部振荡器
		Ht1621WrCmd(SYSDIS);
		Ht1621WrCmd(WDTDIS);
		Ht1621WrCmd(SYSEN);
		Ht1621WrCmd(LCDON);
		DelayMS(50); //延时一段时间		

}