S3C2440-LCD字符顯示

void Paint_text(U32 x, U32 y, U32 color, unsigned char ch[]){

int i, j, test, s, t = 0;

for(i = 0; i ＜ 16; i++){

test = 0x80;

for(j = 0; j ＜ 16; j++){

if(j == 8){

test = 0x80;

t++;

}

if(ch[t] & test)

LCD_BUFFER[x+i][y+j] = color;

test ＞＞= 1;

}

t++;

}

}

void Paint_text_8(U32 x, U32 y, U32 color, unsigned char ch[]){

int i, j, test;

for(i = 0; i ＜ 16; i++){

test = 0x80;

for(j = 0; j ＜ 8; j++){

if(test & ch[ i])

LCD_BUFFER[x+i][y+j] = color;

test ＞＞= 1;

}

}

}

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;

}

int LcdMain(){

Init_LCD();

Paint_background(0xFFFFFF);

Paint_text(100,100,0x000000,li);

Paint_text(100,116,0x000000,wan);

Paint_text(100,132,0x000000,peng);

Paint_text_8(116,100,0x000000,L);

Paint_text_8(116,108,0x000000,I);

Paint_text_8(116,116,0x000000,N);

Paint_text_8(116,124,0x000000,U);

Paint_text_8(116,132,0x000000,X);

Paint_text_8(116,140,0x000000,AND);

Paint_text_8(116,148,0x000000,A);

Paint_text_8(116,156,0x000000,R);

Paint_text_8(116,164,0x000000,M);

while(1);

}

如果使用字庫，每個漢字的地址由兩個字節(jié)表示。一個是區(qū)號，一個是區(qū)中的位置，即位號。16*16的點陣字庫中，每個字符占32個字節(jié)，每94個字符為一個區(qū)，共87個區(qū)，其中1"15區(qū)為常用符號區(qū)（包括數(shù)字0"9及大小寫英文字母），16"86為常用漢字，其排列是以漢語拼音為序，從一聲到四聲，第87區(qū)為生僻漢字。漢字的起始地址是0xA1A1，A1+94=255，所以一個區(qū)有94個字符。區(qū)和位的起始號都是1，數(shù)組是從0開始，所以如果想在字庫中定位一個字符，（94*（qu-1）+wei）*32。如果中文字符和ASCII碼混合在一樣，如何區(qū)分它們呢？其實也很簡單，ASCII碼的最高位是0，而中文的最高位是1，因此當(dāng)讀取到的一個字節(jié)的最高位是0，則該字節(jié)為ASCII碼，它的下一個字節(jié)與這個字節(jié)無關(guān)；當(dāng)取得到的字節(jié)的最高位是1，則表示的是中文字符，并且該字節(jié)與它的下一個字節(jié)組合在一起表示完整的一個漢字。

#include "Font_Libs.h"

#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 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];