Attachment 'ej_timer0.c'

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   1 /* Exemple d'utilisation des fonctions du module TIMER0,
   2  valide pour la famille 16f87Xa,
   3 Dans cet exemple on utilise le timer0 comme compteur,
   4 connecter un bouton poussoir entre RA4 y 0V
   5 et une résistance de tirage vers le haut (pullup) 
   6 de 5 Kohms entre RA4 y Vdd (+5v),
   7 connecter une led ou une autre sortie à RB7.
   8 RB7 se mettra à l'état haut (Vdd) quand on appuie 4 fois. */
   9 #include <pic/p16f877a.h>
  10 #include <timer0.h>
  11 
  12 int main(void)
  13  {
  14    TRISAbits.TRISA4 = 1;
  15    TRISBbits.TRISB7 = 0;
  16    PORTBbits.RB7 = 0;
  17    timer0_init(COUNTER_EXTERN); 
  18    // Initialise timer0 mode compteur (horloge ou stímuli externe en RA4)
  19    timer0_set_edge(FAL_EDGE); // indique l'incrément du compteur sur front descendant
  20    timer0_set_prescaler(PRESC_DIV_2); 
  21    // établit  le pré-diviseur (prescaler) en fréquence d'instructions / 2
  22    while (timer0_read() < 2); // Attends ici tant que le compteur du timer < 2
  23    PORTBbits.RB7 = 1;
  24  }

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  • [get | view] (2009-03-02 23:05:40, 28.2 KB) [[attachment:GtkPicGccAbout.png]]
  • [get | view] (2009-03-27 08:20:28, 1.5 KB) [[attachment:LISEZ_MOI]]
  • [get | view] (2009-03-02 23:02:00, 0.2 KB) [[attachment:baud.h]]
  • [get | view] (2009-03-02 23:02:09, 0.5 KB) [[attachment:clavier.txt]]
  • [get | view] (2009-03-02 23:02:21, 0.4 KB) [[attachment:compila.txt]]
  • [get | view] (2009-03-02 22:47:50, 0.3 KB) [[attachment:dispo.tex]]
  • [get | view] (2009-03-02 23:02:36, 0.7 KB) [[attachment:ej_adc_87Xa.c]]
  • [get | view] (2009-03-02 23:02:46, 1.0 KB) [[attachment:ej_comp_87Xa.c]]
  • [get | view] (2009-03-02 23:02:59, 0.5 KB) [[attachment:ej_delay.c]]
  • [get | view] (2009-03-02 23:03:12, 0.6 KB) [[attachment:ej_eeprom.c]]
  • [get | view] (2009-03-02 23:03:22, 0.0 KB) [[attachment:ej_i2c.c]]
  • [get | view] (2009-03-02 23:03:39, 0.6 KB) [[attachment:ej_intext.c]]
  • [get | view] (2009-03-02 23:03:51, 0.4 KB) [[attachment:ej_keypad4x4.c]]
  • [get | view] (2009-03-02 23:04:00, 0.5 KB) [[attachment:ej_keypad4x4flex.c]]
  • [get | view] (2009-03-02 23:04:09, 0.4 KB) [[attachment:ej_memory.c]]
  • [get | view] (2009-03-02 23:04:17, 0.3 KB) [[attachment:ej_pinio.c]]
  • [get | view] (2009-03-02 23:04:25, 0.2 KB) [[attachment:ej_pwm.c]]
  • [get | view] (2009-03-02 23:04:35, 0.8 KB) [[attachment:ej_system.c]]
  • [get | view] (2009-03-02 23:04:46, 0.9 KB) [[attachment:ej_timer0.c]]
  • [get | view] (2009-03-02 23:04:58, 1.2 KB) [[attachment:ej_timer2.c]]
  • [get | view] (2009-03-02 23:05:08, 0.4 KB) [[attachment:ej_uart.c]]
  • [get | view] (2009-03-02 23:05:26, 0.4 KB) [[attachment:ej_uart2.c]]
  • [get | view] (2009-03-02 22:48:40, 0.7 KB) [[attachment:exemples.tex]]
  • [get | view] (2009-03-02 23:05:53, 0.5 KB) [[attachment:interruption1.c]]
  • [get | view] (2009-03-02 23:06:14, 0.4 KB) [[attachment:interruption2.c]]
  • [get | view] (2009-03-02 22:49:06, 3.9 KB) [[attachment:intro.tex]]
  • [get | view] (2009-03-02 23:33:12, 2.7 KB) [[attachment:keypad.tex]]
  • [get | view] (2009-03-02 22:49:18, 3.3 KB) [[attachment:mod_ADC.tex]]
  • [get | view] (2009-03-02 22:49:54, 3.2 KB) [[attachment:mod_I2C.tex]]
  • [get | view] (2009-03-02 22:50:44, 5.9 KB) [[attachment:mod_IO.tex]]
  • [get | view] (2009-03-02 22:51:18, 1.0 KB) [[attachment:mod_PWM.tex]]
  • [get | view] (2009-03-02 22:51:26, 1.5 KB) [[attachment:mod_RAM.tex]]
  • [get | view] (2009-03-02 22:51:42, 2.7 KB) [[attachment:mod_TIMER0.tex]]
  • [get | view] (2009-03-02 22:51:50, 2.1 KB) [[attachment:mod_TIMER2.tex]]
  • [get | view] (2009-03-02 22:51:59, 1.7 KB) [[attachment:mod_UART.tex]]
  • [get | view] (2009-03-02 22:52:07, 3.9 KB) [[attachment:mod_UART2.tex]]
  • [get | view] (2009-03-02 22:49:28, 3.5 KB) [[attachment:mod_comp.tex]]
  • [get | view] (2009-03-02 22:49:37, 0.6 KB) [[attachment:mod_delay.tex]]
  • [get | view] (2009-03-02 22:49:47, 0.7 KB) [[attachment:mod_eeprom.tex]]
  • [get | view] (2009-03-02 22:50:27, 7.0 KB) [[attachment:mod_int.tex]]
  • [get | view] (2009-03-02 22:51:33, 0.4 KB) [[attachment:mod_system.tex]]
  • [get | view] (2009-03-02 22:52:17, 0.8 KB) [[attachment:pic.tex]]
  • [get | view] (2009-03-02 22:52:26, 0.2 KB) [[attachment:pilote.tex]]
  • [get | view] (2009-03-02 22:52:35, 1.0 KB) [[attachment:presentation.tex]]
  • [get | view] (2009-03-02 23:06:23, 0.2 KB) [[attachment:pwm.txt]]
  • [get | view] (2009-03-02 22:52:44, 1.1 KB) [[attachment:questions.tex]]
  • [get | view] (2009-03-02 22:53:01, 0.7 KB) [[attachment:ref.tex]]
  • [get | view] (2009-03-02 22:53:10, 7.4 KB) [[attachment:standard.tex]]
  • [get | view] (2009-03-02 23:06:34, 4.8 KB) [[attachment:tabla1.3]]
  • [get | view] (2009-03-02 23:06:44, 8.9 KB) [[attachment:tabla1.5]]
  • [get | view] (2009-03-02 22:53:26, 380.4 KB) [[attachment:tutoriel.pdf]]
  • [get | view] (2009-03-27 08:18:11, 309.2 KB) [[attachment:tutoriel.tar.gz]]
  • [get | view] (2009-03-02 22:53:34, 0.7 KB) [[attachment:tutoriel.tex]]
  • [get | view] (2009-03-02 22:53:42, 0.2 KB) [[attachment:util.tex]]
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