S3C2440-LCD基礎(chǔ)
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下面的程序?qū)CD涂成紅色，然后畫一個藍色的矩形。
#define rGPCCON (*(volatile unsigned *)0x56000020)
#define rGPCUP (*(volatile unsigned *)0x56000028)
#define rGPDCON (*(volatile unsigned *)0x56000030)
#define rGPDUP (*(volatile unsigned *)0x56000038)
#define rLCDCON1 (*(volatile unsigned *)0x4d000000)
#define rLCDCON2 (*(volatile unsigned *)0x4d000004)
#define rLCDCON3 (*(volatile unsigned *)0x4d000008)
#define rLCDCON4 (*(volatile unsigned *)0x4d00000c)
#define rLCDCON5 (*(volatile unsigned *)0x4d000010)
#define rLCDSADDR1 (*(volatile unsigned *)0x4d000014)
#define rLCDSADDR2 (*(volatile unsigned *)0x4d000018)
#define rLCDSADDR3 (*(volatile unsigned *)0x4d00001c)
#define rLCDINTMSK (*(volatile unsigned *)0x4d00005c)
#define rTPAL (*(volatile unsigned *)0x4d000050)
#define rGPGCON (*(volatile unsigned *)0x56000060) //Port G control
#define rGPGDAT (*(volatile unsigned *)0x56000064) //Port G data
#define rGPGUP (*(volatile unsigned *)0x56000068) //Pull-up control G
#define rLCDINTMSK (*(volatile unsigned *)0x4d00005c)
#define rTPAL (*(volatile unsigned *)0x4d000050)
#define rTCONSEL (*(volatile unsigned *)0x4d000060) //LPC3600 Control --- edited by junon
//垂直同步信號的脈寬、后肩和前肩
#define VSPW 15
#define VBPD 3
#define VFPD 5
//水平同步信號的脈寬、后肩和前肩
#define HSPW 8
#define HBPD 58
#define HFPD 15
#define CLKVAL 10
#define HOZVAL 319
#define LINEVAL 239
#define PWREN 1
#define MMODE 0
#define PNRMODE 3
#define BPPMODE 13
#define INVVCLK 0
#define INVVD 0
#define INVVDEN 0
#define U32 unsigned int
#define M5D(n) ((n) & 0x1fffff)
#define PAGEWIDTH 320
#define OFFSIZE 0
#define LCD_XSIZE 320
#define LCD_YSIZE 240
#define SCR_XSIZE 320
#define SCR_YSIZE 240
#define INVVLINE 1
#define INVVFRAME 1
#define BPP24BL 0
#define BSWP 0
#define HWSWP 0
volatile U32 LCD_BUFFER[240][320];
void Init_LCD(){
rLCDCON1=(CLKVAL＜＜8)|(MMODE＜＜7)|(PNRMODE＜＜5)|(BPPMODE＜＜1)|0; //設(shè)置CLKVAL，VCLK=HCLK/[(CLKVAL+1)*2],決定VM的觸發(fā)方式，選擇顯示模式和BPP模式，暫時不要開啟LCD，因為還沒有設(shè)置好
rLCDCON2=(VBPD＜＜24)|(LINEVAL＜＜14)|(VFPD＜＜6)|(VSPW); //rLCDCON2，rLCDCON3和rLCDCON4主要設(shè)置時序
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需要進行翻轉(zhuǎn)，因為CPU發(fā)出的是正脈沖，LCD使用的是負脈沖，所以要改變極性，PWREN使能電源信號
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; //使能數(shù)據(jù)輸出和LCD控制信號
}
void Paint_background(U32 c){
unsigned int i, j;
for(j = 0; j ＜ LCD_YSIZE; j++)
for(i = 0; i ＜ LCD_XSIZE; i++)
LCD_BUFFER[j][ i] = c;
}
void Paint_rectangle(U32 c){
int i, j;
for(i = 100; i ＜ 200; i++)
for(j = 100; j ＜ 200; j++)
LCD_BUFFER[ i][j] = c;
}
int LcdMain(){
Init_LCD();
Paint_background(0xCD5C5C);
Paint_rectangle(0x000080);
while(1);
}
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