gpio.hpp

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/*
 *     SocialLedge.com - Copyright (C) 2013
 *
 *     This file is part of free software framework for embedded processors.
 *     You can use it and/or distribute it as long as this copyright header
 *     remains unmodified.  The code is free for personal use and requires
 *     permission to use in a commercial product.
 *
 *      THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
 *      OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
 *      MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
 *      I SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
 *      CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
 *
 *     You can reach the author of this software at :
 *          p r e e t . w i k i @ g m a i l . c o m
 */

#ifndef LPC_GPIO_H__
#define LPC_GPIO_H__

#include <stdint.h>
#include "LPC17xx.h"


#define __PNSB  5

typedef enum
{
    P0_0  = (0 << __PNSB) | 0,  
    P0_1  = (0 << __PNSB) | 1,  
    P0_26 = (0 << __PNSB) | 26, 
    P0_29 = (0 << __PNSB) | 29, 
    P0_30 = (0 << __PNSB) | 30, 
    P1_19 = (1 << __PNSB) | 19, 
    P1_20 = (1 << __PNSB) | 20, 
    P1_22 = (1 << __PNSB) | 22, 
    P1_23 = (1 << __PNSB) | 23, 
    P1_28 = (1 << __PNSB) | 28, 
    P1_29 = (1 << __PNSB) | 29, 
    P1_30 = (1 << __PNSB) | 30, 
    P1_31 = (1 << __PNSB) | 31, 
    P2_0 = (2 << __PNSB) | 0, 
    P2_1 = (2 << __PNSB) | 1, 
    P2_2 = (2 << __PNSB) | 2, 
    P2_3 = (2 << __PNSB) | 3, 
    P2_4 = (2 << __PNSB) | 4, 
    P2_5 = (2 << __PNSB) | 5, 
    P2_6 = (2 << __PNSB) | 6, 
    P2_7 = (2 << __PNSB) | 7, 
    P2_8 = (2 << __PNSB) | 8, 
    P2_9 = (2 << __PNSB) | 9, 
    P4_28 = (4 << __PNSB) | 28, 
    P4_29 = (4 << __PNSB) | 29, 
} LPC1758_GPIO_Type;

class GPIO
{
    public:
        GPIO(LPC1758_GPIO_Type gpioId); 
        ~GPIO(); 

        void setAsInput(void);   
        void setAsOutput(void);  

        bool read(void) const;   
        void setHigh(void);      
        void setLow(void);       
        void set(bool on);       
        void toggle(void);       

        void enablePullUp();            
        void enablePullDown();          
        void disablePullUpPullDown();   
        void enableOpenDrainMode(bool openDrain=true); 

    protected:
    private:
        GPIO(); 

        const uint8_t mPortNum;                 
        const uint8_t mPinNum;                  
        volatile LPC_GPIO_TypeDef *mpOurGpio;   
};



#endif /* GPIO_H__ */