电子负载程序.doc

延时void delay1(unsigned int ms)/12.000MHzunsigned int j,k;k=ms*10;for(;k!=0;k-)for(j=0;j168;j+); void delay(unsigned int ms)/12.000MHzunsigned int j,k;k=ms*15;for(;k!=0;k-)for(j=0;j0;us-);12864显示/*/* */*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)(P2&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; delay_us(3); P2 = 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; P2 = dat; delayNOP(); LCD_EN = 1; delayNOP(); LCD_EN = 0; /*/* */* LCD初始化设定 */* */*/void lcd_init() LCD_PSB = 1; /并口方式 LCD_RST = 0; /液晶复位 delay(5); LCD_RST = 1; delay(5); 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/* * 清屏函数 * */void clr_screen() lcd_wcmd(0x34); /扩充指令操作 delay(5); lcd_wcmd(0x30); /基本指令操作 delay(5); lcd_wcmd(0x01); /清屏 delay(5); 主函数uchar code menu_1=U: V I: A;uchar code menu_2=恒压: V 步;uchar code menu_3= 恒流: A 进;uchar code menu_4= 恒阻: ;uchar code menu=0123456789.m -:;void lcd_menu()/开机显示uchar i;lcd_pos(1,0);for(i=0;i16;i+) lcd_wdat(menu_1i); delay(1);lcd_pos(2,0);for(i=0;i16;i+) lcd_wdat(menu_2i); delay(1);lcd_pos(3,0);for(i=0;i16;i+) lcd_wdat(menu_3i); delay(1);lcd_pos(4,0);for(i=0;i=10000)S/=10;out0=menuS%10000/1000;out1=menuS%1000/100;out2=menu10; out3=menuS%100/10;out4=menuS%10; elseout0=menuS%10000/1000;out1=menu10;out2=menuS%1000/100; out3=menuS%100/10;out4=menuS%10; for(i=0;i5;i+) lcd_wdat(outi); delay(1);void lcd_Iin(uint S) /显示输出电流uchar i,out4;out0=menuS%1000/100;out1=menu10;out2=menuS%100/10;out3=menuS%10;lcd_pos(1,5);lcd_wdat(menu14);delay_us(4);for(i=0;i4;i+) lcd_wdat(outi); delay(1);void lcd_Uset(uint S) /显示设置电压uchar i,out5;out0=menuS%10000/1000;out1=menuS%1000/100;out2=menu10;out3=menuS%100/10;out4=menuS%10; /*out0=menuS%10000/1000;out1=menu10;out2=menuS%1000/100;out3=menuS%100/10;out4=menuS%10; */lcd_pos(2,3);lcd_wdat(menu14);delay(1);for(i=0;i5;i+) lcd_wdat(outi); delay(1);void lcd_Iset(uint S) /显示设置电流uchar i,out5;out0=menuS%10000/1000;out1=menu10;out2=menuS%1000/100;out3=menuS%100/10;out4=menuS%10;lcd_pos(3,3);lcd_wdat(menu14);delay(1);for(i=0;i5;i+) lcd_wdat(outi); delay(1);void lcd_R(uint S) /电阻uchar i,out3; if(S100) out0=menuS%100/10;out1=menu10;out2=menuS%10; else if(S1000) S/=10;out1=menuS%100/10;out2=menuS%10;out0=menu_40; else if(S10000) S/=10; out0=menuS/1000;out1=menuS%100/10;out2=menuS%10; lcd_pos(4,3);lcd_wdat(menu14);delay(1);for(i=0;i3;i+) lcd_wdat(outi); delay(1);void lcd_bj(uchar S) /显示步进电压uchar out3,i;out0=menuS/100;out1=menu10;out2=menuS%100/10;lcd_pos(4,7);for(i=0;i3;i+) lcd_wdat(outi); delay(1);void lcd_fu(bit a) /显示负