S3C2440-AD应用
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void Init_LCD(){
rLCDCON1=(CLKVAL＜＜8)|(MMODE＜＜7)|(PNRMODE＜＜5)|(BPPMODE＜＜1)|0; //设置CLKVAL，VCLK=HCLK/[(CLKVAL+1)*2],决定VM的触发方式，选择显示模式和BPP模式，暂时不要开启LCD，因为还没有设置好
rLCDCON2=(VBPD＜＜24)|(LINEVAL＜＜14)|(VFPD＜＜6)|(VSPW); //rLCDCON2，rLCDCON3和rLCDCON4主要设置时序
rLCDCON3=(HBPD＜＜19)|(HOZVAL＜＜8)|(HFPD);
rLCDCON4=(HSPW);
rLCDCON5 = (BPP24BL＜＜12) | (INVVCLK＜＜10) | (INVVLINE＜＜9) | (INVVFRAME＜＜8) | (0＜＜7) | (INVVDEN＜＜6) | (PWREN＜＜3) |(BSWP＜＜1) | (HWSWP); //INVVLINE和INVVFRAME需要进行翻转，因为CPU发出的是正脉冲，LCD使用的是负脉冲，所以要改变极性，PWREN使能电源信号
rLCDSADDR1=(((U32)LCD_BUFFER＞＞22)＜＜21)|M5D((U32)LCD_BUFFER＞＞1);
rLCDSADDR2=M5D(((U32)LCD_BUFFER+(SCR_XSIZE*SCR_YSIZE*4))＞＞1 );
rLCDSADDR3=PAGEWIDTH*32/16;
rLCDINTMSK|=(3);
rTCONSEL = 0;
rGPCUP = 0x0;
rGPDCON = 0xaaaaaaaa;
rGPCCON = 0xaaaa02a9;
rGPDUP = 0x0;
rGPGUP=rGPGUP&("(1＜＜4))|(1＜＜4);
rGPGCON=rGPGCON&("(3＜＜8))|(3＜＜8);
rLCDCON1 |= 1; //使能数据输出和LCD控制信号
}
void Paint_text(U32 x, U32 y, U32 color, unsigned char ch[], U32 lengx, U32 lengy){ //我的这个函数是通用的，只要正确传递参数
int i, j, test, t = -1;
for(i = 0; i ＜ lengy; i++){
for(j = 0; j ＜ lengx; j++){
if(j%8 == 0){
test = 0x80;
t++;
}
if(ch[t] & test)
LCD_BUFFER[x+i][y+j] = color;
test ＞＞= 1;
}
}
}
void Paint_background(U32 c, U32 startx, U32 starty, U32 endx, U32 endy){
U32 i,j;
for(j = starty; j ＜ endy; j++)
for(i = startx; i ＜ endx; i++)
LCD_BUFFER[j][ i] = c;
}
U32 readAD(U32 ch){
rADCCON = (1＜＜14)|(49＜＜6)|(ch＜＜3);
rADCCON |= 0x1;
while(rADCCON & 0x1);
while(!(rADCCON & 0x8000));
return ((U32)rADCDAT0 & 0x3ff)*99/0x3ff ;
}
int LcdMain(){
U32 temperature, pre[2];
pre[0] = pre[1] = 0;
Init_LCD();
Paint_background(0xFFFFFF,0,0,LCD_XSIZE,LCD_YSIZE);
Paint_text(100, 20, 0x0, wen, 48, 48);
Paint_text(100, 68, 0x0, du, 48, 48);
Paint_text(100, 116, 0x0, s1, 48, 48);
Paint_text(100, 212, 0x0, s2, 48, 48);
while(1){
temperature = readAD(0); //读取温度
if(temperature / 10 != pre[1]){ //如果温度改变了，调节LCD上显示的温度，如果没有改变跳过
pre[1] = temperature/10;
Paint_background(0xFFFFFF,164,100,164+24,100+48);
Paint_text(100, 164, 0x0, num+pre[1]*144,24,48); //因为每个数字占24*48/8=144个字节，所以num+offset就可以定位
}
if(temperature %10 != pre[0]){
pre[0] = temperature%10;
Paint_background(0xFFFFFF,188,100,188+24,100+48);
Paint_text(100, 188, 0x0, num+pre[0]*144,24,48);
}
Delay(100);
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