Svenska ElektronikForumet

Kod: Markera allt

while (PIR1.CCP1IF == 0 )  
     {
      void;
     }

Kod: Markera allt

while(1)

  {
  T1CON=0b00110001;
  CCP1CON=0b00000100;

    PIR1.CCP1IF = 0;          
    while (!PIR1.CCP1IF){}  

         
          t1 = CCPR1H*256;
          t1 += CCPR1L;   


    PIR1.CCP1IF = 0 ;         
    while (!PIR1.CCP1IF){} 

         
          t2 = CCPR1H*256;
          t2 += CCPR1L;

    T = t2 - t1;        

    IntToStr(T,svar);
Lcd_Custom_Out(1, 1, "Pulser: ");
Lcd_Custom_Out(2,1, svar );

T1CON=0x00;
CCP1CON=0x00;

  }

Kod: Markera allt

typedef union
  {
  unsigned char Byte[2];
  unsigned int  Word;
  } T_BYTE_N_WORD;

T_BYTE_N_WORD Time_Now, Time_Previous;
unsigned int Period;

void main(void)
  {
  T1CON=0b00110001;
  CCP1CON=0b00000100;
  PIR1.CCP1IF = 0;         
while(1)
  {
  while (!PIR1.CCP1IF){}  // Wait for CCP to capture an edge
  Time_Now.Byte[1] = CCPR1H; // Read result
  Time_Now.Byte[0] = CCPR1L; // Same thing
  PIR1.CCP1IF = 0; // Clear flag
  Period = Time_Now.Word - Time_Previous.Word; // Calculate period-time
  Time_Previous.Word = Time_Now.Word; // Save for next time
  ... // Do whatever You need to do with the value
  }

Kod: Markera allt

interrupt_timer_overflow {
    overflows++;
}

interrupt_external {
    ticks = TIMER + overflows*MAX(timer);
    rpm = räkna ut varvtal från ticks, frekvens, prescaler m.m;
    clear timer;
    overflows = 0;
}

Kod: Markera allt

   typedef union {
  unsigned char Byte[2];
  unsigned int Word;
  }T_BYTE_N_WORD;
  unsigned int Period;

T_BYTE_N_WORD Time_Now;
T_BYTE_N_WORD Time_Previous;

void main(){

  char svar[10];


ANSEL = 0;
ANSELH = 0;
PORTB = 0;
TRISC=00100000;     

Lcd_Custom_Config(&PORTB,7,6,5,4,&PORTC,2,0,3);
Lcd_Custom_Cmd(LCD_CLEAR);
Lcd_Custom_Cmd(LCD_CURSOR_OFF);
delay_ms(500);
 

  T1CON=0b00110001;
  CCP1CON=0b00000100;
  PIR1.CCP1IF = 0;

while(1)
  {
  while (!PIR1.CCP1IF){} 
  Time_Now.Byte[1] = CCPR1H; 
  Time_Now.Byte[0] = CCPR1L;
  PIR1.CCP1IF = 0; 
  Period = Time_Now.Word - Time_Previous.Word; 
  Time_Previous.Word = Time_Now.Word; 


    IntToStr(Period,svar);

Lcd_Custom_Out(2,1, svar );
}
}