单片机12864动态波形显示.doc

/* 描述: * 12864标准字库液晶演示 数据p0,控制p2 */#include #include #include #define uchar unsigned char#define uint unsigned int/* 12864LCD引脚定义 */#define LCD_data P0 /数据口sbit LCD_RS = P26; /寄存器选择输入 sbit LCD_RW = P25; /液晶读/写控制sbit LCD_EN = P27; /液晶使能控制sbit LCD_PSB = P32; /串/并方式控制sbit LCD_RST = P37; /液晶复位端口#define delayNOP(); _nop_();_nop_();_nop_();_nop_();/*/uchar code DIS1 = Vpp:;uchar code DIS2 = F:;uchar DIS3 = 5V;uchar DIS4 = 12Hz;uchar D1=0123456789;/*/正弦波代码uchar code tab=126,100,80,70,65,62,65,70,80,100,126,152,172,182,187,190,187,182,172,152;/背景图片uchar code 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*/* 延时函数 */* */*/void delay(int ms) while(ms-) uchar i; for(i=0;i150;i+) _nop_(); _nop_();_nop_();_nop_(); /*/* */* 延时函数 */* */*/void delay1(int ms) while(ms-) uchar y; for(y=0;y100;y+) ; /*/* */*检查LCD忙状态 */*lcd_busy为1时，忙，等待。lcd-busy为0时,闲，可写指令与数据。 */* */*/bit lcd_busy() bit result; LCD_RS = 0; LCD_RW = 1; LCD_EN = 1; delayNOP(); result = (bit)(P0&0x80); LCD_EN = 0; return(result); /*/* */*写指令数据到LCD */*RS=L，RW=L，E=高脉冲，D0-D7=指令码。 */* */*/void lcd_wcmd(uchar cmd) while(lcd_busy(); LCD_RS = 0; LCD_RW = 0; LCD_EN = 0; _nop_(); _nop_(); P0 = cmd; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; /*/* */*写显示数据到LCD */*RS=H，RW=L，E=高脉冲，D0-D7=数据。 */* */*/void lcd_wdat(uchar dat) while(lcd_busy(); LCD_RS = 1; LCD_RW = 0; LCD_EN = 0; P0 = dat; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; /*读数据*/unsigned char readData(void)unsigned char RData;while(lcd_busy();P0=0xff;LCD_RS=1;LCD_RW=1;LCD_EN=0;LCD_EN=1;RData=P0;/RData=dataPort;LCD_EN=0;return RData;/*/* */* LCD初始化设定 */* */*/void lcd_init() LCD_PSB = 1; /并口方式 LCD_RST = 0; /液晶复位 delay(2); LCD_RST = 1; delay(2); lcd_wcmd(0x34); /扩充指令操作 delay(5); lcd_wcmd(0x30); /基本指令操作 delay(5); lcd_wcmd(0x0C); /显示开，关光标 delay(5); lcd_wcmd(0x01); /清除LCD的显示内容 delay(5);/*/* */* 设定显示位置 */* */*/void lcd_pos(uchar X,uchar Y) uchar pos; if (X=1) X=0x80; else if (X=2) X=0x90; else if (X=3) X=0x88; else if (X=4) X=0x98; pos = X+Y ; lcd_wcmd(pos); /显示地址/* * 图形显示 * */void photodisplay(uchar *bmp) uchar i,j; lcd_wcmd(0x34); /写数据时,关闭图形显示 for(i=0;i32;i+) lcd_wcmd(0x80+i); /先写入水平坐标值 lcd_wcmd(0x80); /写入垂直坐标值 for(j=0;j16;j+) /再写入两个8位元的数据 lcd_wdat(*bmp+); delay1(1); for(i=0;i32;i+) lcd_wcmd(0x80+i); lcd_wcmd(0x88); for(j=0;j16;j+) lcd_wdat(*bmp+); delay1(1); lcd_wcmd(0x36); /写完数据,开图形显示 /* * 清屏函数 * */void clr_screen() lcd_wcmd(0x34); /扩充指令操作 delay(3); lcd_wcmd(0x30); /基本指令操作 delay(3); lcd_wcmd(0x01); /清屏 delay(3); /*/uchar Y_wz(uchar a)uchar i;for(i=0;i(i*4)&(a4; /列 左移四位cbite=x&0x0f;if(y32)row=y;elserow=y-32;collum+=8;lcd_wcmd(0x80+row);lcd_wcmd(0x80+collum);readData();tempH=readData();tempL=readData();lcd_wcmd(0x80+row);lcd_wcmd(0x80+collum);if (color)if(cbite8)tempH|=(1(7-cbite);/tempL=(1(7-cbite);else/tempH=(1(15-cbite);tempL|=(1(15-cbite);elseif(cbite8)tempH&=(1(7-cbite);/tempL=(1(7-cbite);else/tempH=(1(15-cbite);tempL&=(1 X1 ) Temp = X1 ; X1 = X0 ; X0 = Temp ; for( ; X0 Y1 ) Temp = Y1 ; Y1 = Y0 ; Y0 = Temp ; for(; Y0 0 ) incx = 1; else if( delta_x = 0 ) w_LineY( StartX, StartY, EndY ) ; return ; else incx = -1 ; if( delta_y 0 ) incy = 1 ; else if(delta_y = 0 ) w_LineX( StartX, EndX, StartY ) ; return ;