src/libs/Pin.h

   1 #ifndef PIN_H
   2 #define PIN_H
   3
   4 #include "mbed.h" //Required for LPC_GPIO* . can probably be found in one othe the files mbed.h includes. TODO
   5 //#include "../gcc4mbed/external/mbed/LPC1768/LPC17xx.h"
   6 #include "libs/Kernel.h"
   7 #include "libs/utils.h"
   8 #include <string>
   9
  10 class Pin{
  11     public:
  12         Pin(){ }
  13
  14         Pin* from_string(std::string value){
  15             LPC_GPIO_TypeDef* gpios[5] ={LPC_GPIO0,LPC_GPIO1,LPC_GPIO2,LPC_GPIO3,LPC_GPIO4};
  16             this->port_number =  atoi(value.substr(0,1).c_str());
  17             this->port = gpios[this->port_number];
  18             this->inverting = ( value.find_first_of("!")!=string::npos ? true : false );
  19             this->pin  = atoi( value.substr(2, value.size()-2-(this->inverting?1:0)).c_str() );
  20             return this;
  21         }
  22
  23         inline Pin*  as_output(){
  24             this->port->FIODIR |= 1<<this->pin;
  25             return this;
  26         }
  27
  28         inline Pin*  as_input(){
  29             this->port->FIODIR &= ~(1<<this->pin);
  30             return this;
  31         }
  32
  33         inline Pin* as_open_drain(){
  34             if( this->port_number == 0 ){ LPC_PINCON->PINMODE_OD0 |= (1<<this->pin); }
  35             if( this->port_number == 1 ){ LPC_PINCON->PINMODE_OD1 |= (1<<this->pin); }
  36             if( this->port_number == 2 ){ LPC_PINCON->PINMODE_OD2 |= (1<<this->pin); }
  37             if( this->port_number == 3 ){ LPC_PINCON->PINMODE_OD3 |= (1<<this->pin); }
  38             if( this->port_number == 4 ){ LPC_PINCON->PINMODE_OD4 |= (1<<this->pin); }
  39             return this;
  40         }
  41
  42         inline bool get(){
  43             if( this->inverting ){
  44                return ~(( this->port->FIOPIN >> this->pin ) & 1);
  45             }else{
  46                return  (( this->port->FIOPIN >> this->pin ) & 1);
  47             }
  48         }
  49
  50         inline void set(bool value){
  51             // TODO : This should be bitmath
  52             if( this->inverting ){ value = !value; }
  53             if( value ){
  54                 this->port->FIOSET = 1 << this->pin;
  55             }else{
  56                 this->port->FIOCLR = 1 << this->pin;
  57             }
  58         }
  59
  60         bool inverting;
  61         LPC_GPIO_TypeDef* port;
  62         char port_number;
  63         char pin;
  64 };
  65
  66
  67
  68
  69 #endif