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Balogh (diskusia | príspevky)
sensor, team1
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Nová stránka: <source lang="c"> →‎********************************************************: →‎Example 10.1. Timer counter 1 as a PWM generator: /* Modulates MiniMEXLE yellow LED, SW1...
 
StudentDVPS (diskusia | príspevky)
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(3 medziľahlé úpravy od jedného ďalšieho používateľa nie sú zobrazené)
Riadok 2: Riadok 2:
/* ******************************************************** */
/* ******************************************************** */
/* Example 10.1. Timer counter 1 as a PWM generator        */
/* Example 10.1. Timer counter 1 as a PWM generator        */
/* Modulates MiniMEXLE yellow LED, SW1 and SW2 changes duty */
/*                                                         */
/* SW3 and 4 control the red LED                            */
/* Warning: The values are NOT CORRECT, they should be re-  */
/* Warning: The values are NOT CORRECT, they should be re-  */
/*          placed by students themselves!!!                */
/*          placed by students themselves!!!                */
/* ******************************************************** */
/* ******************************************************** */
#include <avr\io.h>
#define SW1 0
#define SW2 1
#define SW3 2
#define SW4 3
#define RedLED 5


int main(void) {
int main(void) {


   /* *********************** Init device MiniMEXLE ******************************** */
   /* *********************** Init device ******************************** */


     DDRB = 0b00000000;      // PORTB: PWM - PB1, PB2 (LED)  is output, PB6, 7 IN!!!
     DDRB = 0b00000000;      //  
   PORTB = 0b00000000;      // LED Active low, LED off, No pull-ups
   PORTB = 0b00000000;      //  


     DDRC = 0b00000000;      // PORTC LED on PC5  is output, SW1-4 are inputs
     DDRC = 0b00000000;      //  
   PORTC = 0b0000000;      // LED Active high, LED off, pull-ups ON
   PORTC = 0b00000000;      //  


   /* *********************** Init T1 as a PWM generator *************************** */
   /* *********************** Init T1 as a PWM generator *************************** */
Riadok 36: Riadok 26:
                
                


for (;;) {
for (;;);
      if( bit_is_clear(PINC, SW1)) {  // Switch 1
          
              OCR1A += 32;                    // Increment OCR
              OCR1B += 32;
              loop_until_bit_is_set(PINC, SW1);
                }
       
      if(bit_is_clear(PINC, SW2)){  // Switch 2
              OCR1A -= 32;                  // Decrement OCR
        OCR1B -= 32;
              loop_until_bit_is_set(PINC, SW2);
                }
 
              if(bit_is_clear(PINC, SW3)){  // Switch 3
              PORTC |= (1<<RedLED);         // Red LED ON
              loop_until_bit_is_set(PINC, SW3);
                }
 
              if(bit_is_clear(PINC, SW4)) {  // Switch 4
              PORTC &= ~(1<<RedLED);        // Red LED OFF
      loop_until_bit_is_set(PINC, SW4);
                }
          }


}
}

Aktuálna revízia z 08:21, 9. november 2012

/* ******************************************************** */
/* Example 10.1. Timer counter 1 as a PWM generator         */
/*                                                          */
/* Warning: The values are NOT CORRECT, they should be re-  */
/*          placed by students themselves!!!                */
/* ******************************************************** */

int main(void) {

  /* *********************** Init device ******************************** */

    DDRB = 0b00000000;       // 
   PORTB = 0b00000000;       // 

    DDRC = 0b00000000;       // 
   PORTC = 0b00000000;       // 

  /* *********************** Init T1 as a PWM generator *************************** */

  TCCR1A = 0b00000000;       // Mode: PWM, Phase Correct, 9-bit
  TCCR1B = 0b00000000;       // Prescaler 1:1024
   OCR1A = 000;              // Initialization values          
   OCR1B = 000;              // for 1:1 duty cycle
   TCNT1 = 0;           
              

for (;;);
         

}

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