基本信息
源码名称:单片机控制led(12864(2).C)
源码大小:1.78KB
文件格式:.C
开发语言:C/C++
更新时间:2020-10-26
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源码介绍
#include <reg51.h>
#include <intrins.h>
typedef unsigned char u8;
typedef unsigned int u16;
sbit RS=P2^7;
sbit RW=P2^6;
sbit E=P2^5;
sbit PSB=P2^4;
sbit RES=P2^2;
u8 code datas1[] = {"我爱中国"};
u8 code datas2[] = {"电子1901"};
u8 code datas3[] = {"108-08"};
u8 code datas4[] = {"宋涛"};
void delayUs()
{
_nop_();
_nop_();
}
void delayMs(u16 a)
{
u16 i, j;
for(i = a; i > 0; i--)
for(j = 100; j > 0; j--);
}
bit checkBusy()
{
bit busy;
RS= 0;
RW = 1;
E = 1;
delayUs();
busy = (bit)(P0&0x80);
E = 0;
return busy;
}
void wait()
{
while(checkBusy());
}
void writeCmd(u8 cmd)
{
wait();
RS = 0;
RW = 0;
E = 0;
delayUs();
P0 = cmd;
delayUs();
E = 1;
delayUs();
E = 0;
}
void writeData(u8 dat)
{
wait();
RS = 1;
RW = 0;
E = 0;
delayUs();
P0 = dat;
delayUs();
E = 1;
delayUs();
E = 0;
}
void init()
{
delayUs();
PSB=1;
delayUs();
RES=0;
delayUs();
RES=1;
delayUs();
writeCmd(0x30);
delayMs(10);
writeCmd(0x0c);
delayMs(10);
writeCmd(0x01);
delayMs(10);
}
void setPosition(u8 x, u8 y)
{
u8 addr;
if(x==0)
{
addr=0x80 y;
}
else
if(x==1)
{
addr=0x90 y;
}
else
if(x==2)
{
addr=0x88 y;
}
else
if(x==3)
{
addr=0x98 y;
}
addr =y;
writeCmd(addr);
}
void writeString(u8 *str)
{
u8 i = 0;
while(str[i] != '\0')
{
writeData(str[i ]);
}
}
void main()
{
init();
setPosition(0, 0);
writeString(datas1);
setPosition(1, 0);
writeString(datas2);
setPosition(2, 0);
writeString(datas3);
setPosition(3, 0);
writeString(datas4);
while(1);
}