不懂，求含义

来源：互联网发布：hiroko kubota 淘宝编辑：程序博客网时间：2024/05/24 03:43

现在要根据以下的这段芯片HT1621的测试程序进行修改，改为HT1626的程序，可是却不懂这段程序的含义，求解释，先谢谢各位了

#include <stdio.h>
#include <reg51.h>
#include <intrins.h>

sbit     CHS=P1^7;
sbit     RED=P1^6 ;
sbit     WRI=P1^5;
sbit     DAT=P1^4;
sbit     IRQ=P1^3;/***可以不用****/
sbit     RUN=P1^0;
sbit     LIG=P2^0;

#define BIAS 0x52
#define SYSEN 0x02
#define LCDON 0x06
#define LCDOFF 0x04

void Sendbit_1621(unsigned char da,unsigned char cnt) small
{unsigned char i;
for(i=0;i<cnt;i++)
{if((da&0x300)==0)DAT=0;
else DAT=1;
WRI=0;_nop_();LIG=LIG^1;
WRI=1;
da<<=1;
}
}
void SendDatabit_1621(unsigned char da,unsigned char cnt) small
{unsigned char i;
for(i=0;i<cnt;i++)
{if((da&0x01)==0)DAT=0;
else DAT=1;
WRI=0;_nop_();LIG=LIG^1;
WRI=1;
da>>=1;
}
}

void SendCmd(unsigned char comand) small
{CHS=0;
Sendbit_1621(0x300,16);
Sendbit_1621(comand,8);
CHS=1;
}
void Write_1621(unsigned char addr,unsigned char da) small
{CHS=0;
Sendbit_1621(0xa0,3);
Sendbit_1621(addr,6);
SendDatabit_1621(da,4);
CHS=1;
}
void WriteAll_1621(unsigned char addr,unsigned char *p,unsigned char cnt) small
{unsigned char i;
CHS=0;
Sendbit_1621(0xa0,3);
Sendbit_1621(addr,6);
for(i=0;i<cnt;i++)
{SendDatabit_1621(*p,8);
}

CHS=1;
}

/******************************************************************************/
/*Delay Subroutine */
/******************************************************************************/
void DelayXms(int count) small
{
int i,j;
for(i=0; i<count; i++)
{for(j=0; j<6; j++)_nop_();}
}

void main(void)
{

SendCmd(BIAS);
SendCmd(SYSEN);
SendCmd(LCDON);
do{
WriteAll_1621(0,0x0F,64); /***全显***/
DelayXms(6000);
DelayXms(6000);
DelayXms(6000);
DelayXms(6000);
RUN=RUN^1;

WriteAll_1621(0,0x00,64); /***全清***/

DelayXms(1000);

}while(1);

}