adc_count.lst

来自「PIC MICROCONTROLLER PROJECTS 4」· LST 代码 · 共 52 行

     1: #include<pic.h>
     2: #include<math.h> 
     3: unsigned char A,B,a,z,i,msg;
     4: unsigned int I,j,k;
     5: void main()
     6: {
     7:                 #define ADCOSC          0b01000000              // ADC convertion clock fosc/8
     8:                 #define CHANNEL0      0b00000000                // ADC channel 0 (RA0/AN0)
     9:                 #define ADCON           0b00000101              // ADC power on
    10:                 ADRESH=0x00;
    11:                 ADRESL=0x00;
    12:                 TRISA=0b11111111;
    13:                 TRISC=0x00;
    14:                 TRISD=0x00;
    15:                         
    16:                 ADCON1=0b10000000;                                      //right justified 
    17: 
    18:                 ADCON0= ADCOSC | CHANNEL0 | ADCON;
    19:                 ADCON0= ADCON0 | 0b00000100;            //start conversion
    20:         
    21:                 while(1)
    22:                 {
    23:                 z=0b00010000;
    24:                 while(ADGO)
    25:                         { }
    26:                         A=ADRESH & 0b00000010;
    27:                         B=ADRESH & 0b00000001;
    28:          
    29:                 if(A==2)
    30:                 {j=512;}
    31:                 else
    32:                 {j=0;}
    33:                 if(B==1)
    34:                 {k=256;}
    35:                 else
    36:                 {k=0;}
    37:                 I=j+k+ADRESL;
    38:                 for(i=0;i<=3;i++)                       
    39:                 {
    40:                 msg=I%10;
    41:                 msg=msg | 0b11000000;
    42:                 PORTD=msg;
    43:                 z=z>>1;
    44:                 PORTC=z;
    45:                 PORTC=z;
    46:                 PORTC=z;
    47:                 I=I/10;
    48:                 PORTC=0;
    49:                 }
    50:                 }
    51:                 }