大姨妈减肥瘦身大行动!
呵呵,题目够刺眼了吧。(其实是代码瘦身啦~~)白沙的原代码lcd_code.h太庞大,用MGEA88在ICC编译下大概60%多。
俺把它改了一下,现在只有24%啦,减肥效果不错啊~
减肥指南:
1:定义两个数组
const unsigned int BUFFER0={0xEB00,0x6000,0xC700,0xE500,0x6C00,0xAD00,0xAF00,
0xE000,0xEF00,0xED00};
const unsigned int BUFFER1={0x0D70,0x0060,0x0E30,0x0A70,0x0360,0x0B50,0x0F50,
0x0070,0x0F70,0x0B70};
2:修改lcd_number()函数
void lcd_number(unsigned char number,unsigned char position,unsigned char display)
{
switch (position)
{
case 0:
{lcd_buffer &= 0x10ff;
if (display == 0) break;
else {lcd_buffer |= BUFFER0;}
}break;
case 1:
{
if (display == 0) {lcd_buffer &= 0xff10;}
else {lcd_buffer &= 0xff10;
lcd_buffer |= (BUFFER0>>8);
}
}break;
case 2:
{lcd_buffer &= 0x0fff;
lcd_buffer &= 0xfff1;
if (display == 0) break;
else
{lcd_buffer |=(BUFFER0<<4);
lcd_buffer |=(BUFFER0>>12);
}
}break;
case 3:
{lcd_buffer &= 0xF10F;
if (display == 0) break;
else {lcd_buffer |=(BUFFER0>>4);}
}break;
case 4:
{lcd_buffer &= 0xFF10;
if (display == 0) break;
else{lcd_buffer |= (BUFFER0>>8);}
}break;
case 5:
{lcd_buffer &= 0x10FF;
if (display == 0) break;
else{lcd_buffer |= BUFFER0;}
}break;
case 6:
{lcd_buffer &= 0x8fff;
lcd_buffer &= 0xfff0;
if (display == 0) break;
else
{lcd_buffer |= (BUFFER1<<8);
lcd_buffer |= (BUFFER1>>8);
}
}break;
case 7:
{ lcd_buffer &= 0xF08F;
if (display == 0) break;
else{lcd_buffer |= BUFFER1;}
}break;
case 8:
{ lcd_buffer &= 0x8fff;
lcd_buffer &= 0xfff0;
if (display == 0) break;
else
{lcd_buffer |= (BUFFER1<<8);
lcd_buffer |= (BUFFER1>>8);
}
}break;
case 9:
{ lcd_buffer &= 0xF08F;
if (display == 0) break;
else {lcd_buffer|= BUFFER1;}
}break;
}
flood_lcd_data();
}
3:编译看看
是否瘦啦~~
不要太瘦哦~~~
晕~~晕 听起来像南京话啊 Mega88 60%? 我还想用 Mega48 呢,岂不一下就满了……./emotion/em005.gif 呵呵,我那个驱动写的很烂,是给大家参考用的。楼主帮忙优化实在好。 同感
void lcd_number(unsigned char number,unsigned char position,unsigned char display)
这个函数有点宏大,是需要瘦身了 跟大姨妈有啥关系。。。 LS,大姨妈代码代码大姨妈
快速念10遍 大舅妈健身,效果也不错。
这个在ARM编译后更小。AVR不清楚。
可读性较差。
const unsigned int BUFFER0={0xEB,0x60,0xC7,0xE5,0x6C,0xAD,0xAF,
0xE0,0xEF,0xED};
const unsigned int BUFFER1={0xD7,0x06,0xE3,0xA7,0x36,0xB5,0xF5,
0x07,0xF7,0xB7};
const unsigned int POS_OFFEST={8, 16, 28, 36, 48, 56, 92, 100, 108, 116};
//向液晶的数位处写一个0~9的数
//数位为大数码的左至右为0~5,小数码的右至左为6~9;
//number:想显示的数 0~9
//position:显示的数位
//display:显示开关,0 关闭该数位显示(此时number值无效),1 显示该数位数字
void lcd_number(unsigned short int number,unsigned short int position,unsigned short int display)
{
const unsigned int numberMode = (position < 6) ? BUFFER0 : BUFFER1;
const unsigned int currOffest = POS_OFFEST;
const unsigned int offestInWord = currOffest & 0xF;
const unsigned int bitMask =(position < 6) ? 0xEF : 0xF7;
if(offestInWord >= 12)
{
if(display == 0)
{
lcd_buffer &= ~((bitMask & 0xF) << 12);
lcd_buffer[(currOffest >> 4) + 1] &= ~((bitMask & 0xF0) >> 4);
}
else
{
lcd_buffer |= (numberMode & 0xF) << 12;
lcd_buffer[(currOffest >> 4) + 1] |= (numberMode & 0xF0) >> 4;
}
}
else
{
if(display == 0)
{
lcd_buffer &= ~(bitMask << offestInWord);
}
else
{
lcd_buffer |= numberMode << offestInWord;
}
}
flood_lcd_data();
} mark
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