src/libs/Pin.h

   1 #ifndef PIN_H
   2 #define PIN_H
   3
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <string>
   7
   8 #include "libs/LPC17xx/sLPC17xx.h" // smoothed mbed.h lib
   9 #include "PinNames.h"
  10
  11 namespace mbed {
  12     class PwmOut;
  13     class InterruptIn;
  14 }
  15
  16 class Pin {
  17     public:
  18         Pin();
  19
  20         Pin* from_string(std::string value);
  21
  22         inline bool connected(){
  23             return this->valid;
  24         }
  25
  26         inline bool equals(const Pin& other) const {
  27             return (this->pin == other.pin) && (this->port == other.port);
  28         }
  29
  30         inline Pin* as_output(){
  31             if (this->valid)
  32                 this->port->FIODIR |= 1<<this->pin;
  33             return this;
  34         }
  35
  36         inline Pin* as_input(){
  37             if (this->valid)
  38                 this->port->FIODIR &= ~(1<<this->pin);
  39             return this;
  40         }
  41
  42         Pin* as_open_drain(void);
  43
  44         Pin* as_repeater(void);
  45
  46         Pin* pull_up(void);
  47
  48         Pin* pull_down(void);
  49
  50         Pin* pull_none(void);
  51
  52         inline bool get() const{
  53             if (!this->valid) return false;
  54             return this->inverting ^ (( this->port->FIOPIN >> this->pin ) & 1);
  55         }
  56
  57         inline void set(bool value)
  58         {
  59             if (!this->valid) return;
  60             if ( this->inverting ^ value )
  61                 this->port->FIOSET = 1 << this->pin;
  62             else
  63                 this->port->FIOCLR = 1 << this->pin;
  64         }
  65
  66         mbed::PwmOut *hardware_pwm();
  67
  68         mbed::InterruptIn *interrupt_pin();
  69
  70         bool is_inverting() const { return inverting; }
  71         void set_inverting(bool f) { inverting= f; }
  72
  73         // these should be private, and use getters
  74         LPC_GPIO_TypeDef* port;
  75
  76         unsigned char pin;
  77         char port_number;
  78
  79     private:
  80         struct {
  81             bool inverting:1;
  82             bool valid:1;
  83         };
  84 };
  85
  86
  87
  88
  89 #endif