5 #include <linux/gpio.h>
12 namespace gpio  namespace
22  * If the GPIO is an input or output
40  * Represents a GPIO.
42  * Currently supports reading a GPIO.
46 class GPIO  class
49     GPIO() = delete;
50     GPIO(const GPIO&) = delete;
51     GPIO(GPIO&&) = default;
52     GPIO& operator=(const GPIO&) = delete;
53     GPIO& operator=(GPIO&&) = default;
54     ~GPIO() = default;
59      * @param[in] device - the GPIO device file
60      * @param[in] gpio - the GPIO number
61      * @param[in] direction - the GPIO direction
63     GPIO(const std::string& device, gpioNum_t gpio, Direction direction) :  in GPIO()  function in witherspoon::gpio::GPIO
64         device(device), gpio(gpio), direction(direction)  in GPIO()
68      * Reads the GPIO value
70      * Requests the GPIO line if it hasn't been done already.
72      * @return Value - the GPIO value
77      * Sets the GPIO value to low or high
79      * Requests the GPIO line if it hasn't been done already.
87      * Requests a GPIO line from the GPIO device
95      * The GPIO device name, like /dev/gpiochip0
100      * The GPIO number
102     const gpioNum_t gpio;  member in witherspoon::gpio::GPIO
105      * The GPIO direction
110      * File descriptor for the GPIO line
115 } // namespace gpio