include/pin.hpp

   1 #ifndef PIN_HPP
   2 #define PIN_HPP
   3
   4 #include "notify.hpp"
   5 #include "marshal.hpp"
   6
   7 class Pin : public Notifiable
   8 {
   9 public:
  10     Pin(bool value=false) : value(value) {
  11     }
  12
  13     enum Event {
  14         RISING_EDGE,
  15         FALLING_EDGE,
  16     };
  17
  18     NotifierHandle connect(Event type, Notifier notifier) {
  19         return Notifiable::connect(type, notifier);
  20     }
  21
  22     bool get(void) const {
  23         return this->value;
  24     }
  25
  26     void set(bool value) {
  27         if (value && !this->value) {
  28             this->value = value;
  29             this->notify(RISING_EDGE);
  30         } else if (!value && this->value) {
  31             this->value = value;
  32             this->notify(FALLING_EDGE);
  33         }
  34     }
  35
  36     void lower(void) {
  37         this->set(false);
  38     }
  39
  40     void raise(void) {
  41         this->set(true);
  42     }
  43
  44     void pickle(Marshaller *m, const char *name) {
  45         bool value = this->get();
  46         m->start_struct("Pin", name);
  47         marshal(m, "value", &value);
  48         m->end_struct();
  49         this->set(this->value);
  50     }
  51
  52 private:
  53     bool value;
  54 };
  55
  56 #endif