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S3C2440-LCD字符顯示

作者：時(shí)間：2016-12-02 來源：網(wǎng)絡(luò)

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LCD字符顯示有兩種方式，一個(gè)是通過字模提取軟件，將字符轉(zhuǎn)化成一個(gè)字節(jié)型的數(shù)組，另一個(gè)是使用字庫。如果字符較多的時(shí)候，直接使用字庫比較方便。現(xiàn)在說一下中英文字符的存儲結(jié)構(gòu)和編碼方式。中英文的字符點(diǎn)陣結(jié)構(gòu)有4*8，8*16，16*16，24*24，32*32，48*48等結(jié)構(gòu)形勢，不同點(diǎn)陣漢字的字體又有宋體，仿宋體，黑體，楷體等之分。在計(jì)算機(jī)中，相同點(diǎn)陣結(jié)構(gòu)和相同字體的字符存放在同一字庫中。本文使用的是16*16的宋體。16*16的點(diǎn)陣字庫中，字符的信息結(jié)構(gòu)采用以行排列的形式，共有16行，每行有16個(gè)點(diǎn)，分別存放在兩個(gè)字節(jié)內(nèi)。因此每個(gè)字符共占用16*16/2=32個(gè)字節(jié)。字節(jié)的存放順序?yàn)閺淖蟮接遥瑥纳系较?。將漢字變成字符模式，使用16*16個(gè)像素表示一個(gè)漢字。在字模提取的過程中，還要注意取模的順序，順序不同，得到的數(shù)組就不同，一般式從左向右，從上到下。取模方式，逐行式。ASCII型字符的寬度是漢字的一半，即8。

#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];

unsigned char li[]={

0x01,0x00,0x01,0x00,0x7F,0xFC,0x03,0x80,0x05,0x40,0x09,0x30,0x31,0x0E,0xDF,0xE4,

0x00,0x80,0x01,0x00,0x7F,0xFE,0x01,0x00,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00}; //"李",0

unsigned char wan[]={

0x00,0x00,0x7F,0xFE,0x02,0x00,0x02,0x00,0x02,0x10,0x03,0xF8,0x02,0x10,0x04,0x10,

0x04,0x10,0x04,0x10,0x08,0x10,0x08,0x10,0x10,0x10,0x20,0xE0,0x40,0x40,0x00,0x00}; //"萬",1

unsigned char peng[]={

0x00,0x10,0x77,0x20,0x55,0x7C,0x55,0x64,0x77,0x54,0x55,0x54,0x55,0x4C,0x55,0x40,

0x77,0x7E,0x55,0x02,0x55,0x02,0x55,0xFA,0x55,0x02,0xB9,0x14,0x13,0x08,0x00,0x00}; //"鵬",2

unsigned char L[]={0X00,0X00,0X00,0XE0,0X40,0X40,0X40,0X40,0X40,0X40,0X40,0X40,0X42,0XFE,0X00,0X00}; //L

unsigned char I[]={0X00,0X00,0X00,0X7C,0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X7C,0X00,0X00}; //I

unsigned char N[]={0X00,0X00,0X00,0XC7,0X62,0X62,0X52,0X52,0X4A,0X4A,0X4A,0X46,0X46,0XE2,0X00,0X00}; //N

unsigned char U[]={0X00,0X00,0X00,0XE7,0X42,0X42,0X42,0X42,0X42,0X42,0X42,0X42,0X42,0X3C,0X00,0X00}; //U

unsigned char X[]={0X00,0X00,0X00,0XE7,0X42,0X24,0X24,0X18,0X18,0X18,0X24,0X24,0X42,0XE7,0X00,0X00}; //X

unsigned char AND[]={0X00,0X00,0X00,0X30,0X48,0X48,0X48,0X50,0X6E,0XA4,0X94,0X88,0X89,0X76,0X00,0X00}; //&

unsigned char A[]={0X00,0X00,0X00,0X10,0X10,0X18,0X28,0X28,0X24,0X3C,0X44,0X42,0X42,0XE7,0X00,0X00}; //A

unsigned char R[]={0X00,0X00,0X00,0XFC,0X42,0X42,0X42,0X7C,0X48,0X48,0X44,0X44,0X42,0XE3,0X00,0X00}; //R

unsigned char M[]={0X00,0X00,0X00,0XEE,0X6C,0X6C,0X6C,0X6C,0X54,0X54,0X54,0X54,0X54,0XD6,0X00,0X00}; //M

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(shí)不要開啟LCD，因?yàn)檫€沒有設(shè)置好

rLCDCON2=(VBPD＜＜24)|(LINEVAL＜＜14)|(VFPD＜＜6)|(VSPW); //rLCDCON2，rLCDCON3和rLCDCON4主要設(shè)置時(shí)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(jìn)行翻轉(zhuǎn)，因?yàn)镃PU發(fā)出的是正脈沖，LCD使用的是負(fù)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

}

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