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
  10 class Pin {
  11     public:
  12         Pin();
  13
  14         Pin* from_string(std::string value);
  15
  16         inline bool connected(){
  17             return this->valid;
  18         }
  19
  20         inline bool equals(const Pin& other) const {
  21             return (this->pin == other.pin) && (this->port == other.port);
  22         }
  23
  24         inline Pin* as_output(){
  25             if (this->valid)
  26                 this->port->FIODIR |= 1<<this->pin;
  27             return this;
  28         }
  29
  30         inline Pin* as_input(){
  31             if (this->valid)
  32                 this->port->FIODIR &= ~(1<<this->pin);
  33             return this;
  34         }
  35
  36         Pin* as_open_drain(void);
  37
  38         Pin* as_repeater(void);
  39
  40         Pin* pull_up(void);
  41
  42         Pin* pull_down(void);
  43
  44         Pin* pull_none(void);
  45
  46         inline bool get(){
  47             if (!this->valid) return false;
  48             return this->inverting ^ (( this->port->FIOPIN >> this->pin ) & 1);
  49         }
  50
  51         inline void set(bool value)
  52         {
  53             if (!this->valid) return;
  54             if ( this->inverting ^ value )
  55                 this->port->FIOSET = 1 << this->pin;
  56             else
  57                 this->port->FIOCLR = 1 << this->pin;
  58         }
  59
  60         // these should be private, and use getters
  61         LPC_GPIO_TypeDef* port;
  62
  63         unsigned char pin;
  64         char port_number;
  65         struct {
  66             bool inverting:1;
  67             bool valid:1;
  68         };
  69 };
  70
  71
  72
  73
  74 #endif