ATmega128的_LCD12864_绘图(画点_画线_画矩形等)

1、基于ATmega128的LCD12864画图(画点,画线,画矩形等)先上图:程序:文件结构:- _main.c -/* *基于 ATmega128 的 LCD12864 画图显示实验 *16MHz * 编译器: ICCAVR *已测试通过 * by Qin Zhengye* 2011-08-07 */* *硬件接口: LCD_DATA -> PE *RS -> PB0 *RW -> PB1 *EN -> PB2 */#include "my_include.h"#include "LCD12864_graphics.h"void

2、main()Port_init();/ 端口初始化LCD12864_init();_delay_ms( 5 );/ 要等待液晶初始化完毕LCD12864_string( 0, 0, "液晶" );/ 写入内容LCD12864_string( 1, 0, "被屏蔽的号码" );/LCD12864_string( 0, 6, "画点");LCD12864_clear();/ 图形模式的清屏LCD12864_dot( 36, 0, 8, 1 );/ 在 ( 36, 8 ) 处画点 ( 0无用, 看定义函数前的说明 )LCD12864_lin

3、e( 90, 8, 39, 8, 1 );/ 箭头的形状LCD12864_dot( 40, 0, 7, 1 );LCD12864_dot( 40, 0, 9, 1 );LCD12864_dot( 41, 0, 6, 1 );LCD12864_dot( 41, 0, 10, 1 );LCD12864_line( 30, 60, 116, 20, 1 );LCD12864_bar( 90, 45, 110, 60, 1 );LCD12864_rectangle( 9, 34, 40, 62, 1 );- LCD12864_basic.h -/* * LCD12864驱动程序-basic * 此头文

4、件有LCD12864的基本的写指令数据 * for ATmega128 * 16MHz * 编译器: ICCAVR * 已测试通过 * by Qin Zhengye*/* 宏定义要用到的函数( 没用到可以注释掉, 以减小目标程序的大小 ) */#define _KEY_scanf#define _LCD12864_string/* * define functions */void LCD12864_init( void );void LCD12864_cmd ( unsigned char cmd );void LCD12864_dat ( unsigned char dat );void

5、LCD12864_string( unsigned char Y, unsigned char X, unsigned char *table );void check_busy( void );unsigned char KEY_scanf( void );/* * 定义硬件接口( 只接 8数据 + 3控制 + 2电源 根线 ) * RS 0-command; 1-data * RW 0-write ; 1-read * EN 1-input ; 1->0 action */#define LCD_INPINE#define LCD_DDRDDRE#define LCD_OUTPORT

6、E#define KEY_INPIND#define KEY_OUTPORTD#define KEY_DDRDDRD#define BUSY(LCD_IN & 0x80) != 0)#define RS_COMD( PORTB &= (0x01 << 0) )#define RS_DATA( PORTB |= (0x01 << 0) )#define RW_WRITE( PORTB &= (0x01 << 1) )#define RW_READ( PORTB |= (0x01 << 1) )#define EN_SET(

7、PORTB |= (0x01 << 2) )#define EN_CLR( PORTB &= (0x01 << 2) )/*键盘扫描 *电路无需电阻,高效行列版 * *键盘布局: * * D3 D2 D1 D0 * | | | | * D4- 0 1 2 3 * D5- 4 5 6 7 * D6- 8 9 A B * D7- C D E F * *说明: 键盘没有按下则返回0, 按下返回对应键值 */#ifdef_KEY_scanfunsigned char KEY_scanf( void )uchar temp;KEY_DDR = 0x0F;KEY_OUT =

8、 0xF0;_delay_ms( 4 );if( (temp = KEY_IN) != 0xF0 )KEY_DDR = 0xF0;KEY_OUT = 0x0F;_delay_ms( 1 );temp = temp | KEY_IN;switch( temp )case 0xE7: return '0'case 0xEB: return '1'case 0xED: return '2'case 0xEE: return '3'/ 第一行case 0xD7: return '4'case 0xDB: return &#

9、39;5'case 0xDD: return '6'case 0xDE: return '7'/ 第二行case 0xB7: return '8'case 0xBB: return '9'case 0xBD: return 'A'case 0xBE: return 'B'/ 第三行case 0x77: return 'C'case 0x7B: return 'D'case 0x7D: return 'E'case 0x7E: return &#

10、39;F'/ 第四行return 0;#endif/*LCD12864初始化*/void LCD12864_init( void )LCD12864_cmd( 0x30 );/ 基本指令, 字符模式LCD12864_cmd( 0x06 );LCD12864_cmd( 0x0C );/ LCD12864_cmd( 0x01 );/ 清屏LCD12864_cmd( 0x80 );/*写8位的命令*/void LCD12864_cmd( unsigned char cmd )check_busy();RW_WRITE;LCD_OUT = cmd;_delay_us( 1 );/ 出现乱码请加

11、长延时时间EN_CLR;/*写8位的数据*/void LCD12864_dat( unsigned char dat )check_busy();RS_DATA;RW_WRITE;LCD_OUT = dat;_delay_us( 1 );/ 出现乱码请加长延时时间EN_CLR;/* *写字符串 *Y 取值 ( 0 3 ) *X 取值 ( 0 7 ) * table: 要显示的字符串的指针 */#ifdef_LCD12864_stringvoid LCD12864_string( unsigned char Y, unsigned char X, unsigned char *table )un

12、signed char i;switch( Y )case 0: LCD12864_cmd( 0x80 + X );break;case 1: LCD12864_cmd( 0x90 + X );break;case 2: LCD12864_cmd( 0x88 + X );break;case 3: LCD12864_cmd( 0x98 + X );break;default: return ;for( i = 0; tablei != '0' i+ )LCD12864_dat( tablei );#endif/*检查忙*/void check_busy( void )uchar

13、 n = 200;/ 控制时间, 时间过长强制退出LCD_OUT = 0xFF;RS_COMD;RW_READ;EN_SET;/_delay_us( 10 );while( BUSY = 1 && -n > 0 );- LCD12864_graphics.h -/* * LCD12864驱动程序-graphics * 此头文件有LCD12864的 图形模式 下的 * 清屏, 画 320 * 240 的图画, * 读指定位置的内容, 画点, 画线, 画矩形框, * 填充矩形 * for ATmega128 * 16MHz * 编译器: ICCAVR * 已测试通过 * by

14、 Qin Zhengye */*注意:本人用ICCAVR作编译器, 发现下面的 "LCD12864_dot" 函数的参数有问题 *定义成 "LCD12864_dot ( unsigned char X, unsigned char Y, unsigned char color )" *当第一个实参 "X" 是浮点数时, 发现传给第二个参数 "Y" 的值会跟传给 "X" 的数值一样 *所以下面在两者之间插入一个参数, 调用时多写一个数就没事了. 如果你知道解决办法麻烦QQ通知一声 :) */* *

15、 宏定义要用到的函数( 没用到可以注释掉, 以减小目标程序的大小 ) * 函数具体内容看下面 */#define_LCD12864_clear#define_LCD12864_next#define_LCD12864_read_8#define_LCD12864_read_16#define_LCD12864_dot#define_LCD12864_line#define_LCD12864_bar#define_LCD12864_rectangle#define_LCD12864_whole_line/#define_LCD12864_BMP/* *声明函数 */void LCD12864_c

16、lear( void );void LCD12864_next ( void );void LCD12864_dot ( unsigned char X, unsigned char DB_X, unsigned char Y, unsigned char color );void LCD12864_line( unsigned char X0, unsigned char Y0, unsigned char X1, unsigned char Y1, unsigned char color );void LCD12864_bar ( unsigned char left, unsigned

17、char up, unsigned char right, unsigned char down, unsigned char color );void LCD12864_rectangle ( unsigned char left, unsigned char up, unsigned char right, unsigned char down, unsigned char color );void LCD12864_whole_line( unsigned char Y, unsigned char color );void LCD12864_BMP( unsigned char *ta

18、ble );unsigned char LCD12864_read_8( void );unsigned int LCD12864_read_16( void );/*包含基本的函数*/#include "LCD12864_basic.h"/*图形模式的清屏*/#ifdef_LCD12864_clearvoid LCD12864_clear( void )unsigned char i,j;LCD12864_cmd( 0x34 );/ 关图形模式的显示for( i = 0; i < 32; i+ )LCD12864_cmd( 0x80 + i );LCD12864_c

19、md( 0x80 );for( j = 0; j < 32; j+ )LCD12864_dat( 0x00 );LCD12864_cmd( 0x36 );/ 开图形模式的显示#endif/*编辑位置移到下一个8位 *可以移到低8位单独编辑内容 */#ifdef_LCD12864_nextvoid LCD12864_next( void )uchar n = 100;RS_COMD;RW_READ;EN_SET;while( BUSY = 1 && -n > 0 );RS_DATA;EN_CLR;#endif/*从LCD12864读数据 *注意: LCD12864的读

20、操作, 第一次读到的是地址 * 第二次读到的才是该地址对应的数据 */#ifdef _LCD12864_read_8unsigned char LCD12864_read( void )unsigned char temp;check_busy();LCD_OUT = 0xFF;RS_DATA;RW_READ;EN_SET;LCD_DDR = 0x00;_delay_us(1);temp = LCD_IN;EN_CLR;LCD_DDR = 0xFF;return ( temp );/*读LCD12864的一个字节*/unsigned char LCD12864_read_8( void )LC

21、D12864_read();/ 注意: 读两次才读到数据return LCD12864_read();#endif/*读LCD12864的16位数据*/#ifdef_LCD12864_read_16unsigned int LCD12864_read_16( void )unsigned int _16_data;unsigned char L_dat;_16_data = LCD12864_read_8();L_dat = LCD12864_read();return (_16_data << 8) | L_dat;#endif/* *向LCD12864在( X, Y )出写一个

22、点 * *0 <= X <= 127 *0 <= Y <= 63 *color: 0 -> 擦点, 非0 -> 画点 *( 传来的DB_X没用 看文件前面的注意 ) */#ifdef _LCD12864_dotvoid LCD12864_dot( unsigned char X, unsigned char DB_X, unsigned char Y, unsigned char color )unsigned char temp, temp2 = 0;if( (0x01 & (X >> 3) != 0 )temp2 = 1;DB_X =

23、 X >> 4;X = X & 0x07;/ X = X % 8;if( Y >= 32 )DB_X += 8;Y -= 32;LCD12864_cmd( 0x80 + Y );LCD12864_cmd( 0x80 + DB_X );if( temp2 )LCD12864_next();temp = LCD12864_read_8();if( color != 0 )temp |= (0x80 >> X );elsetemp &= (0x80 >> X );LCD12864_cmd( 0x80 + Y );LCD12864_cmd( 0

24、x80 + DB_X );if( temp2 )LCD12864_next();LCD12864_dat( temp );#endif/* *向LCD12864画一条线 *起点( X0, Y0 ), 终点( X1, Y1 ) *0 <= X <= 127 *0 <= Y <= 63 */#ifdef_LCD12864_linevoid LCD12864_line(unsigned char X0, unsigned char Y0,unsigned char X1, unsigned char Y1, uchar color )LCD12864_cmd( 0x34 );

25、/ 关闭显示if( X0 = X1 )/ K = 1if( Y0 > Y1)X1 = Y0;Y0 = Y1;Y1 = X1;while( Y0 <= Y1)LCD12864_dot( X0, 0, Y0+, color );LCD12864_cmd( 0x36 );/ 打开显示return;if( Y0 = Y1 )/ K = 0if( X0 > X1 )Y1 = X0;X0 = X1;X1 = Y1;while( X0 <= X1 )LCD12864_dot( X0+, 0, Y0, color );LCD12864_cmd( 0x36 );/ 打开显示return;

26、else/ K != 0 && K != 1float _K;char temp1 = ( X1 < X0 )?( X0 - X1 ):( X1 - X0 );char temp2 = ( Y1 < Y0 )?( Y0 - Y1 ):( Y1 - Y0 );if( temp1 < temp2 )/ Y_K = (float)temp1 / temp2;temp2 = ( Y0 > Y1 )?( -1 ):( 1 );if( X0 > X1 )_K = -_K;temp1 = 1;LCD12864_dot( X0, 0, Y0, color );do

27、Y0 += temp2;LCD12864_dot( X0 + _K * temp1 ,0 , Y0, color );temp1+;while( Y0 != Y1 );else/ X_K = (float)temp2 / temp1;temp2 = ( X0 > X1 )?( -1 ):( 1 );if( Y0 > Y1 )_K = -_K;temp1 = 1;LCD12864_dot( X0, 0,Y0, color );doX0 += temp2;LCD12864_dot( X0, 0, Y0 + _K * temp1, color );temp1+;while( X0 !=

28、X1 );LCD12864_cmd( 0x36 );/ 打开显示#endif/* *向LCD12864画一个填充矩形 * *left : 左, X 坐标 *up : 上, Y 坐标 * right: 右, X 坐标 * down : 下, Y 坐标 * *0 <= (left & right) <= 127 *0 <= (up & down) <= 63 */#ifdef_LCD12864_barvoid LCD12864_bar(unsigned char left, unsigned char up,unsigned char right, unsi

29、gned char down, uchar color )unsigned char temp;LCD12864_cmd( 0x34 );if( left > right )temp = left;left = right;right = temp;if( up > down )temp = up;up = down;down = temp;for( ; up <= down; up+ )for( temp = left; temp <= right; temp+ )LCD12864_dot( temp, 0, up, color );LCD12864_cmd( 0x3

30、6 );#endif/* *向LCD12864画一个矩形框 * *left : 左, X 坐标 *up : 上, Y 坐标 * right: 右, X 坐标 * down : 下, Y 坐标 * *0 <= (left & right) <= 127 *0 <= (up & down) <= 63 */#ifdef_LCD12864_rectanglevoid LCD12864_rectangle( unsigned char left, unsigned char up,unsigned char right, unsigned char down,

31、uchar color )LCD12864_line( left, up, right, up, color );LCD12864_line( right, up, right, down, color );LCD12864_line( right, down, left, down, color );LCD12864_line( left, down, left, up, color );#endif/*画一整行 *Y: 行数 ( 0 63 ) */#ifdef_LCD12864_whole_linevoid LCD12864_whole_line( unsigned char Y, uns

32、igned char color )unsigned char temp = 0x80;if( Y >= 32 )temp += 8;Y -= 32;LCD12864_cmd( Y + 0x80);LCD12864_cmd( temp );for( temp = 0; temp < 16; temp+ )LCD12864_dat( color );#endif/*画一幅128*64的图画*/#ifdef_LCD12864_BMPvoid LCD12864_BMP( unsigned char *table )uchar i,j;uint n = 0;LCD12864_cmd( 0x34 );for( i = 0; i < 64; i+ )if( i >= 32 )LCD12864_cmd( 0x80 + i - 32 );LCD12864_cmd( 0x88 );elseLCD12864_cmd( 0x80 + i );LCD12864_cmd( 0x80 );for( j = 0; j < 16; j+ )LCD12864_dat( tablen+ );LCD12864_cmd( 0x36 );#endif- my_inclu