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Код: Выделить всё

int v, por1, por2, j, x, num;

int mask(int num) {
  switch (num) {
    case 0 : return 0x3F;
    case 1 : return 0x06;
    case 2 : return 0x5B;
    case 3 : return 0x4F;
    case 4 : return 0x66;
    case 5 : return 0x6D;
    case 6 : return 0x7D;
    case 7 : return 0x07;
    case 8 : return 0x7F;
    case 9 : return 0x6F;
  } //case end
}//~


void interrupt() {
  if (v==0) {
    PORTB = por2;      //  send mask for digit 3 to portb
    PORTA = 1;         //  turn on 1st 7 seg., turn off 2nd
    v = 1;
  } else {
    PORTB = por1;      //  send mask for digit 8 to portb
    PORTA = 2;         //  turn on 2nd 7 seg., turn off 1st
    v = 0;
    }
  TMR0 = 0;            //  clear TMRO
  INTCON = 0x20;       //  clear TMR0IF and set TMR0IE
  x = 1;
}//~

void main() {

  trisC = 0;
  OPTION_REG  = 0x80;   // pull up resistors
  PORTA       =   0;    // clear porta (make sure both displays are off)
  TRISA       =   0;    // designate porta pins as output
  PORTB       =   0;    // clear portb (make sure LEDs are off)
  TRISB       =   0;    // designate portb pins as input
  TMR0        =   0;    // clear TMRO
  j = mask(x);
  por1        =  j;
  por2        =  j;
  portC = 2;
  INTCON      = 0xA0;   // enable T0IE
  //wait for interrupt
}//~!