12864LCD的图形显示编程（c语言）

clude "intrins.h"

sbit io_LCD12864_RS = P1^0

sbit io_LCD12864_RW = P1^1

sbit io_LCD12864_EN = P1^2

#define io_LCD12864_DATAPORT P0

#define SET_DATAio_LCD12864_RS = 1

#define SET_INC io_LCD12864_RS = 0

#define SET_READ io_LCD12864_RW = 1

#define SET_WRITE io_LCD12864_RW = 0

#define SET_EN io_LCD12864_EN = 1

#define CLR_EN io_LCD12864_EN = 0

void v_Lcd12864CheckBusy_f( void ) //忙检测函数

{

unsigned int nTimeOut = 0

SET_INC

SET_READ

CLR_EN

SET_EN

while( ( io_LCD12864_DATAPORT &0x80 ) &&( ++nTimeOut != 0 ) )

CLR_EN

SET_INC

SET_READ

}

void v_Lcd12864SendCmd_f( unsigned char byCmd ) //发送命令

{

v_Lcd12864CheckBusy_f()

SET_INC

SET_WRITE

CLR_EN

io_LCD12864_DATAPORT = byCmd

_nop_()

_nop_()

SET_EN

_nop_()

_nop_()

CLR_EN

SET_READ

SET_INC

}

void v_Lcd12864SendData_f( unsigned char byData ) //发送数据

{

v_Lcd12864CheckBusy_f()

SET_DATA

SET_WRITE

CLR_EN

io_LCD12864_DATAPORT = byData

_nop_()

_nop_()

SET_EN

_nop_()

_nop_()

CLR_EN

SET_READ

SET_INC

}

void v_DelayMs_f( unsigned int nDelay ) //延时

{

unsigned int i

for( nDelay >0 nDelay-- )

{

for( i = 125 i >0 i-- )

}

}

void v_Lcd12864Init_f( void ) //初始化

{

v_Lcd12864SendCmd_f( 0x30 ) //基本指令集

v_DelayMs_f( 50 )

v_Lcd12864SendCmd_f( 0x01 ) //清屏

v_DelayMs_f( 50 )

v_Lcd12864SendCmd_f( 0x06 ) //光标右移

v_DelayMs_f( 50 )

v_Lcd12864SendCmd_f( 0x0c )//开显示

}

void v_Lcd12864SetAddress_f( unsigned char x, y )//地址转换

{

unsigned char byAddress

switch( y )

{

case 0 : byAddress = 0x80 + x

break

case 1 : byAddress = 0x90 + x

break

case 2 : byAddress = 0x88 + x

break

case 3 : byAddress = 0x98 + x

break

default :

break

}

v_Lcd12864SendCmd_f( byAddress )

}

void v_Lcd12864PutString_f( unsigned char x, unsigned char y, unsigned char *pData )

{

v_Lcd12864SetAddress_f( x, y )

while( *pData != '\0' )

{

v_Lcd12864SendData_f( *pData++ )

}

}

void main( void )

{

v_Lcd12864Init_f()

v_Lcd12864PutString_f( 0,0, "快乐随行")

v_Lcd12864PutString_f( 2,1, "分都不给")

v_Lcd12864PutString_f( 0,2, "*LCD12864ST7920*")

v_Lcd12864PutString_f( 0,3, "辛苦回答了半天")

while( 1 )

}

标准的一般都是这个程序

#include <reg52.h>

#include <math.h>

#define lcd_data P1

sbit cs1=P2^3

sbit cs2=P2^4

sbit di=P2^0

sbit rw=P2^1

sbit e=P2^2

void delay(int t)

{

int i,j,k

for(i=0i<ti++)

{ for(j=0j<255j++)

k++}

}

void write_com_l(unsigned int command)

{

cs1=1

rw=0

di=0

lcd_data=command

e=1

e=0

cs1=0

}

void write_data_l(unsigned int data0)

{

cs1=1

rw=0

di=1

lcd_data=data0

e=1

e=0

cs1=0

}

void write_com_r(unsigned int command)

{

cs2=1

rw=0

di=0

lcd_data=command

e=1

e=0

cs2=0

}

void write_data_r(unsigned int data0)

{

cs2=1

rw=0

di=1

lcd_data=data0

e=1

e=0

cs2=0

}

void disp0()

{

unsigned int i,j

for (i=0i<8i++)

{write_com_l(0xb8+i)

write_com_r(0xb8+i)

write_com_l(0x40)

write_com_r(0x40)

for (j=0j<64j++)

{write_data_l(0xaa)

write_data_r(0xaa)

}

}

}

void disp1()

{

unsigned int i,j

for (i=0i<8i++)

{write_com_l(0xb8+i)

write_com_r(0xb8+i)

write_com_l(0x40)

write_com_r(0x40)

for (j=0j<64j++)

{write_data_l(0x55)

write_data_r(0x55)

}

}

}

void disp2()

{

unsigned int i,j

for (i=0i<8i++)

{write_com_l(0xb8+i)

write_com_r(0xb8+i)

write_com_l(0x40)

write_com_r(0x40)

for (j=0j<64j++)

{write_data_l(0x0f)

write_data_r(0x0f)

}

}

}

void disp3()

{

unsigned int i,j

for (i=0i<8i++)

{write_com_l(0xb8+i)

write_com_r(0xb8+i)

write_com_l(0x40)

write_com_r(0x40)

for (j=0j<64j++)

{write_data_l(0xf0)

write_data_r(0xf0)

}

}

}

void init_lcd() //初始化LCD清屏

{

write_com_l(0x3e)

write_com_r(0x3e)

write_com_l(0x3f)

write_com_r(0x3f)

write_com_l(0xc0)

write_com_r(0xc0)

write_com_l(0xb8)

write_com_r(0xb8)

write_com_l(0x40)

write_com_r(0x40)

for(1)

{

disp0()

delay(0x0ff)

disp1()

delay(0x0ff)

disp2()

delay(0x0ff)

disp3()

delay(0x0ff)

}

}

void main()

{

IE=0x81

init_lcd()

}

void innt0 () interrupt 0

{

do {}while(1)

}

#include<STC12.h>

#define uchar unsigned char

#define uint unsigned int

uchar code seg_data1[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}

uchar code seg_data2[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef}

sbit p20=P2^0

sbit p21=P2^1

sbit p22=P2^2

//sfr ADC_CONTR=0xBC

//sfr P1ASF=0x9D

//sfr ADC_RES=0xBD

void delay(uint a1)

void input()

void display(uint count)

void main()

{

uint x

while(1)

{

input()

x=5*(ADC_RES*50)/255

display(x)

}

}

void input()

{

P1ASF=0x01

ADC_CONTR=0x88

delay(25)

IE=0xA0

}

void drop() interrupt 5

{

ADC_CONTR=0X88

}

void display(uint count)

{

uchar i

for (i=0i<5i++)

{

P0=seg_data1[count%10]

p20=0

delay(25)

p20=1

P0=seg_data2[count/10%10]

p21=0

delay(25)

p21=1

if(count>=100)

{

P0=seg_data1[count/100]

p22=0

delay(25)

p22=1

}

}

}

void delay(uint a1) //误差 0us

{

unsigned char a,b,c

for(c=a1c>0c--)

for(b=142b>0b--)

for(a=2a>0a--)

}

这是我自己写的，用数码管显示，你只需要把void display(uint count)函数改为12864的显示函数即可

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