AVR 1602液晶字符移动
void delay(int k)
{
int i,j;
for(i=0;i
for(j=0;j<1140;j++);
}
}
void wait()
{
uchar val;
DATA=0xff;
RS=0;
RW=1;
__no_operation();
__no_operation();
EN=1;
__no_operation();
__no_operation();
DDRA=0x00;
val=PINA;
while(val&busy)
{
val=PINA;
}
EN=0;
DDRA=0xff;
}
{
uchar val;
DATA=0xff;
RS=0;
RW=1;
__no_operation();
__no_operation();
EN=1;
__no_operation();
__no_operation();
DDRA=0x00;
val=PINA;
while(val&busy)
{
val=PINA;
}
EN=0;
DDRA=0xff;
}
void writecmd(uchar cmd)
{
wait();
RS=0;
RW=0;
__no_operation();
DATA=cmd;
__no_operation();
EN=1;
__no_operation();
__no_operation();
EN=0;
}
void writedata(uchar data)
{
wait();
RS=1;
RW=0;
__no_operation();
DATA=data;
__no_operation();
EN=1;
__no_operation();
__no_operation();
EN=0;
}
{
wait();
RS=1;
RW=0;
__no_operation();
DATA=data;
__no_operation();
EN=1;
__no_operation();
__no_operation();
EN=0;
}
void displayonechar(uchar x,uchar y,uchar dda)
{
y&=0x01;
x&=0x0f;
if(y)x|=0x40;
x|=0x80;
writecmd(x);
writedata(dda);
}
void displaychar(uchar x,uchar y,uchar *p)
{
y&=0x01;
x&=0x0f;
while(*p!= )
{
if(x<=0x0f)
{
displayonechar(x,y,*p);
p++;
x++;
}
}
}
{
y&=0x01;
x&=0x0f;
while(*p!= )
{
if(x<=0x0f)
{
displayonechar(x,y,*p);
p++;
x++;
}
}
}
1
2
关键词： AVR1602液晶字符移
加入微信
获取电子行业最新资讯
搜索微信公众号：EEPW
或用微信扫描左侧二维码