指针式时钟仿真

#include

#include

#include

#include

#include

#include

//#include

uchar code LCD_WIDTH =16;

uchar code LCD_HEIGHT =64;

uchar gCurRow,tCurCol;

uchar ShowModeSW;

uint txthome,grhome;

uchar Status_BIT_01();

uchar Status_BIT_3();

uchar LCD_Write_Command(uchar cmd);

uchar LCD_Write_Command_P1(uchar cmd,uchar para1);

uchar LCD_Write_Command_P2(uchar cmd,uchar para1,uchar para2); uchar LCD_Write_Data(uchar dat);

uchar LCD_Read_Data();

void cls();

char LCD_Initialise();

void SetShowMode(uchar mode);

void Set_LCD_POS(uchar row,uchar col) reentrant;

void Line(uchar x1,ucahr y1,uchar x2,uchar y2,bit Mode);

void Pixel(uchar x,uchar y,uchar Mode) reentrant;

uchar gCurRow,gCurCol;

ucahr tCurRow,tCurCol;

uint txthome,grhome;

//状态STA1，STA0判断（读/写指令和读/写数据）

uchar Status_BIT_01()

{

uchar i;

for(i =10;i>0;i--)

{

if((LCMCW & 0x03))

break;

}

return i; //错误时返回0

}

//状态位ST3判断（数据自动写状态）

uchar Status_BIT_3()

{

uchar i;

for(i =10;i>0;i--)

{

if((LCMCW & 0x08)==0x08)

break;

}

return i; //错误时返回0

}

//写双参数指令

uchar LCD_Write_Command_P2(uchar cmd ,uchar para1,uchar para2) {

if(Status_BIT_01()==0)return 1;

LCMDW=para1;

if(Status_BIT_01()==0)return 2;

LCMDW=para2;

if(Status_BIT_01()==0)return 3;

LCMCW=cmd;

return 0;//成功时返回0

}

//写单参数指令

uchar LCD_Write_Command_P1(uchar cmd ,uchar para1)

{

if(Status_BIT_01()==0)return 1;

LCMDW=para1;

if(Status_BIT_01()==0)return 2;

LCMCW=cmd;

return 0;//成功时返回0

}

//写无参数指令

uchar LCD_Write_Command(uchar cmd)

{

if(Status_BIT_01()==0)return 1;

LCMCW=cmd;

return 0;//成功时返回0

}

//写数据

uchar LCD_Write_Data(uchar dat)

{

if(Status_BIT_3()==0)

return 1;

LCMDW=ddat;

return 0;

}

//设置当前地址

void Set_LCD_POS(uchar row,uchar col) reentrant

{

uint Pos;

Pos=row*LCD_WIDTH+col;

LCD_Write_Command_P2(LCD_ADD_POS,Pos%256,Pos/256);

gCurRow =row;

gCurCol =col;

}

//清屏

void cls()

{

uint i;

LCD_Write_Command_P2(LCD_ADD_POS,0x00,0x00);

LCD_Write_Command(LC_AUT_WR);

for(i=0;i<0x2000;i++)

{

Status_BIT_3();

LCD_Write_Data(0x00);

}

LCD_Write_Command(LC_AUT_OVR);

LCD_Write_Command_P2(LC_ADD_POS,0x00,0x00);

gCurRow = 0;

gCurCol = 0;

}

//LCD初始化

uchar LCD_Initialise()

{

RESET = 0;

RESET = 1;

LCD_Write_Commmand_P2(LC_TXT_STP,0x00,0x00);

LCD_Write_Commmand_P2(LC_TXT_WID,LCD_WIDTH,0x00);

LCD_Write_Commmand_P2(LC_GRH_STP,0x00,0x00);

LCD_Write_Commmand_P2(LC_GRH_WID,LCD_WIDTH,0x00);

LCD_Write_Commmand_P1(LC_CGR_POS,CGRAMSTART >>1);

LCD_Write_Commmand(LC_CUR_SHP | 0x01);

LCD_Write_Commmand_P2(LC_MOD_OR);

LCD_Write_Commmand_P2(LC_DIS_SW|0x08);

grhome = GRSTART;

txthome = TXTSTART;

return 0;

}

//绘点函数

//参数：点的坐标，模式1/0分别为显示与清除点

void Pixel(uchar x,ucahr y,uchar Mode) reentrant

{

uchar start_addr,dat;

start_addr = 7-(x%8);

dat = LC_BIT_OP|start_addr;

if(Mode)

dat |=0x08;

Set_LCD_POS(y,x/8);

LCD_Write_COmmand(LC_BIT_OP |dat);

}

//两数据交换

void Exchange(uchar *a,uchar *b)

{

uchar t;

t = *a;

*a = *b;

*b = t;

}

//绘制直线函数

//参数：起点与终点坐标，模式为显示（1）或清除（0），点阵不超过255x255 void Line(uchar x1,uchar y1,uchar x2,uchar y2,bit Mode)

{

uchar x,y;

float k,b;

if(abs(y1 -y2)<=abs(x1-x2))

{

k=((float)y2 -y1) / ((float)x2-x1);

b=y1 -k*x1;

if(x1>x2)

Exchange(&x1,&x2);

for(x=x1;x<=x2;x++)

{

y=(uchar)(k*x+b);

Pixel(x,y,Mode);

}

}

else

{

k=((float)x2 -x1) / ((float)y2-y1);

b=x1 -k*y1;

if(y1>y2)

Exchange(&y1,&y2);

for(y=y1;y<=y2;y++)

{

x=(uchar)(k*y+b);

Pixel(x,y,Mode);

}

}

}