int main(void)

{

  while(1)

       {    

              for(step=0;step<201;step++)

              {

on;  

                     if(step==200)

                     {                         

                            step=0;                 

                     }

                     AD9850_Write_Parallel(0,87890+step*97.66);//0.25ms

                     ad_value=(float)ADC_ConvertedValue/4096*3.3;

                     adc_zheng=(u8)ad_value;

                     adc_xiaoshu=ad_value*100-adc_zheng*100;

                     LCD_ShowxNum(132,10,adc_zheng,1,16,0);

                     LCD_ShowxNum(148,10,adc_xiaoshu,2,16,0);

                     POINT_COLOR=WHITE;

                     LCD_DrawLine(15+step*1.5+1.5, 50, 15+step*1.5+1, 225);

                     POINT_COLOR=BLACK;

                     LCD_DrawLine(15+step*1.5, 225-ad_value*50, 15+step*1.5+1, 225);     //1.8ms

                     Delay_ms(20);

                     Delay_us(270);

                            key=keyscan();//0.02ms

                            if(key==65&&key_init==102) flag_stop=1;

                            else if(key==42&&key_init==102) flag_stop2=1;

                            key_init=key;

                            while(flag_stop)

                            {

                                   u8 key=102,flag_22=0;

                                   if(keyscan()==1) {key_init=102,flag_stop=0;}

                                   key=keyscan();

                                   while(key==68) {LCD_Clear(WHITE);LCD_Display_init();flag_stop=0;break;}

while(key==0||key==1||key==2||key==3||key==4||key==5||key==6||key==7||key==8||key==9)

                                          {

                                                 u16 a=0,b=0,flag_exit21=0;

                                                 LCD_Clear(WHITE);                                           

                                                 POINT_COLOR=BLUE;

                                                 LCD_Display_Dir(1);

                                                LCD_ShowString(50, 226, 160, 160, 12, "Set_Freq:");

                                                LCD_ShowString(180, 226, 160, 160, 12, "/100KHz");

                                                 LCD_DrawLine(15, 45, 15, 225);                                                                                     LCD_DrawLine(15, 225, 315, 225);                                

                                                 LCD_DrawLine(15, 45, 13, 47);                                     

                                                 LCD_DrawLine(15, 45, 17, 47);                              

                     for(j=15;j<315;j=j+15)

       {

              LCD_DrawLine(j+15,220,j+15,225);

       }

       for(i=0;i<180;i=i+15)

       {

              LCD_DrawLine(15,225-i, 20, 225-i);

           LCD_ShowxNum(2,220-i,i/5,2,12,0);                       //×Ý×ø±ê»­¶ÌÏß ÏÔʾÊý×Ö

       }

              LCD_ShowString(2,10,160,160,12,"/0.1V");

              for(i=0;;i++)

       {

        while(keyscan()=='f');

       if (keyscan()=='#'){Delay_ms(20);       break;}

                     else

                            {                                                                          

                            a=keyscan();

                            if(a==68) {flag_exit21=1; break;}

                            Delay_ms(400);

                            LCD_ShowNum(120+10*i,226,a,1,16);

                            b=10*b+a;

                            }

                     AD9850_Write_Parallel(0,b*98.146);

                         }

                     if(flag_exit21==1) break;

                            while(1)

                            {

                            POINT_COLOR=BLUE;

                            ad_value=(float)ADC_ConvertedValue/4096*3.3;

                            sprintf(ADVALUE,"ADC:%0.2f V",ad_value);

                            LCD_ShowString(100,10,160,160,16,ADVALUE);

                            POINT_COLOR=WHITE;

                            LCD_DrawLine(120, 30, 120, 225);                                              

                            POINT_COLOR=BLUE;

                            LCD_DrawLine(120, 225-ad_value*50, 120, 225);                                

                            if(keyscan()==68) break;

                            }

                            Delay_ms(500);

                            }

                       if(keyscan()==68) break;

                       while(key==66||key==67)

                     {                  

                     LCD_Clear(WHITE);                                                                

                     LCD_Display_Change_Scan_Time_init();

                     while(1)

                     {

                     for(i=0;;i++)

                     {

                     while(keyscan()=='f');

                     if (keyscan()=='#'){Delay_ms(20); break;}

                     if(TIME==5) TIME=0;

                     if(keyscan()==66) TIME=TIME+1;

                     else if(keyscan()==67) TIME=TIME-1;

                     Delay_ms(500);

                  if(TIME==5) TIME=0;        

                     if(TIME==0) TIME=5; 

                     if(TIME==255) TIME=4;

                     POINT_COLOR=BLUE;

                     LCD_ShowxNum(280,12,TIME,1,12,0);           

                 POINT_COLOR=BLACK;

                     }                  

                     for(step=0;step<201;step++)

                     {

                     on;

                     if(step==200)

                     {                         

                     step=0;                 

                     }                                                             AD9850_Write_Parallel(0,87890+step*97.66);//0.25ms

       ad_value=(float)ADC_ConvertedValue/4096*3.3;                                                       

        }                                                                                

}