12864液晶乱码问题.doc

日志 KEIL下使用Jlink调试STM32 核心模块开发板 Visual Assist XVS下很好用的编程助手12864乱码问题Electronic Desig 2010-08-06 19:22:00 阅读107 评论0 字号：大中小订阅 一般会出现乱码，原因基本上都是因为液晶屏反应速度没那么快，所以只要代码方面给个延时基本上没太大的问题。下面给大家演示一下。（完整的参考代码附在本文最后面）这是写入的时候显示正常的代码。void write_char(uint8 x,uint8 y, uint8 c) uint8 j=0,i=0; for(j=0;j2;j+) delay(500); /特别注意这个地方一定要给个延时 writexy(x+j,y); for(i=0;i8;i+) delay(500); /特别注意这个地方一定要给个延时 write_data(chc*16+8*j+i); 显示效果如下： 按键按下后切换也不会有跑飞的情况。 这是跑飞的情况。void write_char(uint8 x,uint8 y, uint8 c) uint8 j=0,i=0; for(j=0;j2;j+) /delay(500); /特别注意这个地方一定要给个延时 /这次我把这个延时屏蔽掉了 writexy(x+j,y); for(i=0;i8;i+) delay(500); /特别注意这个地方一定要给个延时 write_data(chc*16+8*j+i); 于是出现了乱码。点到处乱跑。按键切换后也是如此。而且越跑越乱。大家写驱动的时候切忌一定要看时序图，必要的时候要给些延时测试一下。不要跑了弯路。我就折腾了很久。= =。附：参考代码#include #include config.h#include KEYBOARD.H#define RS (18)#define RW (19)#define CE (110)#define CS1 (111)#define CS2 (112)#define LCD_RST (113)#define RSSP_ON 0X3F#define RSSP_OFF 0X3E#define COL_ADD 0X40 /列#define PAGE_ADD 0XB8 /行#define START_LINE 0XC0extern uint32 Resolution;/分辨力extern uint8 State;/当前状态const unsigned char ch=/*- 文字: 0 -*/0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,/*- 文字: 1 -*/0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,/*- 文字: 2 -*/0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,/*- 文字: 3 -*/0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,/*- 文字: 4 -*/0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,/*- 文字: 5 -*/0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,/*- 文字: 6 -*/0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,/*- 文字: 7 -*/0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,/*- 文字: 8 -*/0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,/*- 文字: 9 -*/0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,/*-10 文字: R -*/0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,/*-11 文字: e -*/0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,/*-12 文字: s -*/0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,/*-13 文字: H -*/0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,/*-14 文字: z -*/0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,/*-15 文字: P -*/0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,/*-16 文字: W -*/0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,/*-17 文字: (s) -*/0xC0,0x20,0x80,0x80,0x80,0x80,0x20,0xC0,0x3F,0x40,0x27,0x24,0x24,0x3C,0x40,0x3F,/*-18 文字: H -*/0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,/*-19 文字: a -*/0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,/*-20 文字: r -*/0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,/*-21 文字: (h) -*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7C,0x82,0x7F,0x08,0x08,0x78,0x82,0x7C,/*-22 文字: R -*/0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,/*-23 文字: u -*/0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,/*-24 文字: n -*/0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,/*-25 文字: 空白 -*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,;void delay(int a) int i,j; for(i = 0;i a;i+) for(j = 0;j 10;j+) ;void write_com(unsigned char cmdcode) IO0CLR = RS; IO0CLR = RW; IO0SET = cmdcode; IO0CLR = (cmdcode & 0x000000FF); delay(0); IO0SET = CE; delay(0); IO0CLR = CE;void write_data(unsigned char data) IO0SET = RS; IO0CLR = RW; IO0SET = data; IO0CLR = (data & 0x000000FF); delay(0); IO0SET = CE; delay(0); IO0CLR = CE;void clr(void) unsigned char j,k; IO0SET = CS1; IO0SET = CS2; write_com(PAGE_ADD + 0); write_com(COL_ADD + 0); for(k = 0;k 8;k+) delay(100); write_com(PAGE_ADD + k); for(j = 0;j 64;j+) delay(100); write_data(0x00); void writexy(uint8 x, uint8 y) y = y & 0x7f; x = x & 0x07; if(y 64) IO0SET = CS1; IO0CLR = CS2; write_com(COL_ADD + y); else IO0SET = CS2; IO0CLR = CS1; y &= 0x3F; write_com(COL_ADD + y); delay(500); write_com(PAGE_ADD + x); delay(500);void write_char(uint8 x,uint8 y, uint8 c) uint8 j=0,i=0; for(j=0;j2;j+) delay(500); /特别注意这个地方一定要给个延时 writexy(x+j,y); for(i=0;i8;i+) delay(500); /特别注意这个地方一定要给个延时 write_data(chc*16+8*j+i); void LCD12864_init(void) PINSEL0 = 0X00000000; IO0DIR = 0XFFFFFFFF; IO0CLR = LCD_RST; delay(250); IO0SET = LCD_RST; delay(250); IO0SET = CS1; IO0SET = CS2; delay(250); write_com(RSSP_OFF); write_com(PAGE_ADD + 0); write_com(START_LINE + 0); write_com(COL_ADD + 0); write_com(RSSP_ON);void LCD12864_Start (void) clr(); write_char(0,0,10); /Resolution write_char(0,8,11); write_char(0,16,12); if( 20 = Resolution ) write_char(0,24,25); write_char(0,32,2); /2 else if ( 100 = Resolution ) write_char(0,24,1); /10 write_char(0,32,0); write_char(0,40,0); /0 write_char(0,48,13); /H write_char(0,56,14); /z if( run = State ) write_char(0,64+16,25); write_char(0,72+16,22); /Run write_char(0,80+16,23); write_char(0,88+16,24); write_char(0,96+16,25); else if( pause = State ) write_char(0,64+16,15); /Pause