Pin.h

00001 #ifndef PIN_H
00002 #define PIN_H
00003 
00004 #include <stdlib.h>
00005 #include "mbed.h" // smoothed mbed.h lib
00006 #include "libs/Kernel.h"
00007 #include "libs/utils.h"
00008 #include <string>
00009 
00010 class Pin{
00011     public:
00012         Pin(){ }
00013 
00014         Pin* from_string(std::string value){
00015             LPC_GPIO_TypeDef* gpios[5] ={LPC_GPIO0,LPC_GPIO1,LPC_GPIO2,LPC_GPIO3,LPC_GPIO4};
00016             this->port_number =  atoi(value.substr(0,1).c_str());  
00017             this->port = gpios[this->port_number]; 
00018             this->inverting = ( value.find_first_of("!")!=string::npos ? true : false );
00019             this->pin  = atoi( value.substr(2, value.size()-2-(this->inverting?1:0)).c_str() );
00020             return this;
00021         }
00022 
00023         inline Pin*  as_output(){
00024             this->port->FIODIR |= 1<<this->pin;
00025             return this;
00026         }  
00027 
00028         inline Pin*  as_input(){
00029             this->port->FIODIR &= ~(1<<this->pin);
00030             return this;
00031         }  
00032 
00033         inline Pin* as_open_drain(){
00034             if( this->port_number == 0 ){ LPC_PINCON->PINMODE_OD0 |= (1<<this->pin); }
00035             if( this->port_number == 1 ){ LPC_PINCON->PINMODE_OD1 |= (1<<this->pin); }
00036             if( this->port_number == 2 ){ LPC_PINCON->PINMODE_OD2 |= (1<<this->pin); }
00037             if( this->port_number == 3 ){ LPC_PINCON->PINMODE_OD3 |= (1<<this->pin); }
00038             if( this->port_number == 4 ){ LPC_PINCON->PINMODE_OD4 |= (1<<this->pin); }
00039             return this;
00040         }
00041 
00042         inline bool get(){
00043             return this->inverting ^ (( this->port->FIOPIN >> this->pin ) & 1);
00044         }
00045 
00046         inline void set(bool value){
00047             value = this->inverting ^ value;
00048             if( value ){
00049                 this->port->FIOSET = 1 << this->pin;
00050             }else{
00051                 this->port->FIOCLR = 1 << this->pin;
00052             }        
00053         }
00054 
00055         bool inverting; 
00056         LPC_GPIO_TypeDef* port;
00057         char port_number;
00058         char pin; 
00059 };
00060 
00061 
00062 
00063 
00064 #endif