fsfw-hal/common/gpio/GpioIF.h

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2021-06-05 14:42:20 +02:00
#ifndef COMMON_GPIO_GPIOIF_H_
#define COMMON_GPIO_GPIOIF_H_
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#include "gpioDefinitions.h"
#include <fsfw/returnvalues/HasReturnvaluesIF.h>
#include <fsfw/devicehandlers/CookieIF.h>
class GpioCookie;
/**
* @brief This class defines the interface for objects requiring the control
* over GPIOs.
* @author J. Meier
*/
class GpioIF : public HasReturnvaluesIF {
public:
virtual ~GpioIF() {};
/**
* @brief Called by the GPIO using object.
* @param cookie Cookie specifying informations of the GPIOs required
* by a object.
*/
virtual ReturnValue_t addGpios(GpioCookie* cookie) = 0;
/**
* @brief By implementing this function a child must provide the
* functionality to pull a certain GPIO to high logic level.
*
* @param gpioId A unique number which specifies the GPIO to drive.
* @return Returns RETURN_OK for success. This should never return RETURN_FAILED.
*/
virtual ReturnValue_t pullHigh(gpioId_t gpioId) = 0;
/**
* @brief By implementing this function a child must provide the
* functionality to pull a certain GPIO to low logic level.
*
* @param gpioId A unique number which specifies the GPIO to drive.
*/
virtual ReturnValue_t pullLow(gpioId_t gpioId) = 0;
/**
* @brief This function requires a child to implement the functionality to read the state of
* an ouput or input gpio.
*
* @param gpioId A unique number which specifies the GPIO to read.
* @param gpioState State of GPIO will be written to this pointer.
*/
virtual ReturnValue_t readGpio(gpioId_t gpioId, int* gpioState) = 0;
};
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#endif /* COMMON_GPIO_GPIOIF_H_ */