📄 dual_ram.c
字号:
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};
delay(uchar d)
{
while(--d);
}
/**********判断忙标志，返回的是一个位BF**********/
bit lcd_busy(void)
{
uchar bflag;
rs=0;
rw=1;
_nop_();
e=1;
_nop_();
lcd_bus=0xff;
bflag=lcd_bus;
e=0;
return(bit)(bflag&0x80); //BF=1 busy
}
/*********写命令，有两个参数，第一个是要写的命令控制字，
第二个是用来控制是否进行忙标志的判断。
busyflag=1：判断；为 0：不判断****************/
void lcd_wrcmd(uchar cmd)
{
while(lcd_busy());
lcd_bus=cmd;
rs=0;
rw=0;
_nop_();
e=1;
_nop_();
_nop_();
e=0;
}
/************向液晶片写数据***************/
void lcd_wrdata( uchar lcddata)
{
while(lcd_busy());
lcd_bus=lcddata;
rs=1;
rw=0;
_nop_();
e=1;
_nop_();
_nop_();
e=0;
}
void lcd_ini(void)
{
lcd_wrcmd(0x38);
delay(100);
lcd_wrcmd(0x0c);
delay(100);
lcd_wrcmd(0x06);
delay(100);
lcd_wrcmd(0x01);
delay(100);
}
uchar key()
{
uchar keycode=0xff,temp,i;
key_bus=0x0f;
temp=key_bus&0x0f;
if(temp!=0x0f) //有键按下
{
key_bus=0x7f;
for(i=0;i<4;i++)
{
temp=key_bus&0x0f;
if(temp==0x07)
{
keycode=i*4;
break;
}
else if(temp==0x0b)
{
keycode=i*4+1;
break;
}
else if(temp==0x0d)
{
keycode=i*4+2;
break;
}
else if(temp==0x0e)
{
keycode=i*4+3;
break;
}
key_bus=(key_bus>>1)|0x80;
}
while((key_bus&0x0f)!=0x0f) //等待释放
{
key_bus=0x0f;
}
}
return keycode;
}
void display(uchar cmd,uchar code *str)
{
uchar i=0;
lcd_wrcmd(cmd);
while(str[i]!='\0')
{
lcd_wrdata(str[i]);
i++;
}
}
main()
{
uint i;
uchar tt;
uchar code str[]="IDT7132 CE=1";
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=Rom[i];
ce=1;
lcd_ini();
temp = sin1[1];
lcd_wrcmd(0xc0);
lcd_wrdata(0x30+temp/100);
lcd_wrdata(0x30+temp/10%10);
lcd_wrdata(0x30+temp%10);
temp=sin1[44];
lcd_wrcmd(0xc4);
lcd_wrdata(0x30+temp/100);
lcd_wrdata(0x30+temp/10%10);
lcd_wrdata(0x30+temp%10);
display(0x80,str);
en=1;
while(1)
{
tt=key();
if(tt==0)
{
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=Rom1[i];
ce=1;en=1;
}
else if(tt==1)
{
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=Rom[i];
ce=1; en=1;
}
else if(tt==2)
{
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=(Rom[i]/2+Rom1[i]/2);
ce=1; en=1;
}
else if(tt==3)
{
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=Rom[i]*Rom1[i];
ce=1; en=1;
}
else if(tt==4)
{
en=0;ce=0;
for(i=0;i<2048;i++) sin1[i]=Rom[i]-Rom1[i];
ce=1; en=1;
}
}
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