2021-01-23 17:22:40 +01:00
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#ifndef BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_
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#define BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_
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#include <bsp_q7s/gpio/GpioIF.h>
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#include <fsfwconfig/returnvalues/classIds.h>
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2021-01-28 14:55:21 +01:00
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#include <bsp_q7s/gpio/cookies/GpioCookie.h>
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2021-01-23 17:22:40 +01:00
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/**
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* @brief This class implements the GpioIF for a linux based system. The
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* implementation is based on the libgpiod lib which requires linux 4.8
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* or higher.
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* @note The Petalinux SDK from Xilinx supports libgpiod since Petalinux
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* 2019.1.
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*/
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class LinuxLibgpioIF: public GpioIF, public SystemObject {
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public:
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static const ReturnValue_t CONFIGURATION_FAILURE = MAKE_RETURN_CODE(0x1);
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static const ReturnValue_t OPEN_CHIP_FAILURE = MAKE_RETURN_CODE(0x2);
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static const ReturnValue_t OPEN_LINE_FAILURE = MAKE_RETURN_CODE(0x3);
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static const ReturnValue_t REQUEST_LINE_FAILURE = MAKE_RETURN_CODE(0x4);
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static const ReturnValue_t PULLING_HIGH_FAILURE = MAKE_RETURN_CODE(0x5);
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LinuxLibgpioIF(object_id_t objectId);
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virtual ~LinuxLibgpioIF();
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ReturnValue_t initialize(CookieIF * cookie) override;
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ReturnValue_t pullHigh(gpioId_t gpioId) override;
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ReturnValue_t pullLow(gpioId_t gpioId) override;
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private:
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static const uint8_t INTERFACE_ID = CLASS_ID::LINUX_LIBGPIO_IF;
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/*Holds the information and configuration of all used GPIOs */
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GpioMap gpioMap;
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/**
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* @brief This functions drives line of a GPIO specified by the GPIO ID.
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*
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* @param gpioId The GPIO ID of the GPIO to drive.
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* @param logiclevel The logic level to set. O or 1.
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*/
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ReturnValue_t driveGpio(gpioId_t gpioId,
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unsigned int logiclevel);
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/**
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* @brief This function checks if GPIOs are already registered and whether
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* there exists a conflict in the GPIO configuration. E.g. the
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* direction.
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*
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* @param mapToAdd The GPIOs which shall be added to the gpioMap.
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*
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* @return RETURN_OK if successful, otherwise RETURN_FAILED
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*/
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ReturnValue_t checkForConflicts(GpioMap mapToAdd);
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};
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#endif /* BSP_Q7S_GPIO_LINUXLIBGPIOIF_H_ */
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