GPIO.h

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#ifndef GPIO_H_
#define GPIO_H_
 
#include <mutex>              // std::mutex, std::unique_lock
#include <condition_variable> // std::condition_variable
#include "GenericThreadInfo.h"
 
#define NUMBER_OF_GPIO_PINS (28)
 
namespace SWE4211RPi {
 
typedef int (*CallbackType)(int);
 
class GPIO {
public:
    enum DIRECTION {
        GPIO_IN, GPIO_OUT
    };
    enum VALUE {
        GPIO_LOW = 0, GPIO_HIGH = 1
    };
    enum EDGE {
        GPIO_NONE, GPIO_RISING, GPIO_FALLING, GPIO_BOTH
    };
 
protected:
    int number=0;
 
    int instanceCount = 0;
 
    std::mutex mtx;
    
    std::condition_variable cv;
    std::condition_variable ccv;
 
    CallbackType methodCallback=nullptr;
 
    struct timespec isrRisingTimestamp;
 
    struct timespec isrFallingTimestamp;
 
 
 
public:
    static GPIO& getInstance(int number, DIRECTION dir, VALUE vale = GPIO_LOW);
    static void freeInstance(GPIO& instance);
 
    GPIO();
    virtual ~GPIO();  //destructor will unexport the pin
 
    static GPIO* gpio_instances[NUMBER_OF_GPIO_PINS+1];
    static GenericThreadInfo* threadInstances[NUMBER_OF_GPIO_PINS+1];
 
 
    // General Input and Output Settings
    virtual void setValue(GPIO::VALUE)=0;
 
    virtual GPIO::VALUE getValue()=0;
 
// Edge and Interrupt Methods
 
    virtual void enableEdgeInterrupt(EDGE edgeType)=0;
 
    virtual void disableEdgeInterrupt()=0;
 
    virtual int waitForEdge(int maxWait);
 
    virtual struct timespec getRisingISRTimestamp();
 
    virtual struct timespec getFallingISRTimestamp();
 
    virtual void setCallbackMethod(CallbackType methodCallback);
 
    virtual void callBackThreadHandler();
 
    virtual void handleInterruptDrivenGPIOPin()=0;
 
    virtual int getPinNumber();
};
 
 void myInterrupt0();
 
 void myInterrupt1();
 
 void myInterrupt2();
 
 void myInterrupt3();
 
 void myInterrupt4();
 
 void myInterrupt5();
 
 void myInterrupt6();
 
 void myInterrupt7();
 
 void myInterrupt8();
 
 void myInterrupt9();
 
 void myInterrupt10();
 
 void myInterrupt11();
 
 void myInterrupt12();
 
 void myInterrupt13();
 void myInterrupt14();
 
 void myInterrupt15();
 
 void myInterrupt16();
 
 void myInterrupt17();
 
 void myInterrupt18();
 
 void myInterrupt19();
 
 void myInterrupt20();
 
 void myInterrupt21();
 
 void myInterrupt22();
 
 void myInterrupt23();
 
 void myInterrupt24();
 
 void myInterrupt25();
 
 void myInterrupt26();
 
 void myInterrupt27();
 
 void myInterrupt28();
} /* namespace SWE4211RPi */
 
#endif /* GPIO_H_ */