96 lines
2.0 KiB
C++
96 lines
2.0 KiB
C++
//
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// Created by yingluo907 on 2019/4/11.
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//
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#include "Gpio.h"
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#include "DevUtil.h"
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#include "stringex.hpp"
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#include <sys/stat.h>
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#include <unistd.h>
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#include <linux/gpio.h>
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#include <fcntl.h>
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#define IOPATH "%s/gpio%d/%s"
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const std::string Gpio::falling = "falling";
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const std::string Gpio::rising = "rising";
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const std::string Gpio::both = "both";
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const std::string Gpio::none = "none";
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const std::string Gpio::in = "in";
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const std::string Gpio::out = "out";
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Gpio::Gpio(int port)
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{
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this->port = port;
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path_value = string_format(IOPATH, path_gpiobase.c_str(), port, path_value.c_str());
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path_edge = string_format(IOPATH, path_gpiobase.c_str(), port, path_edge.c_str());
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path_direction = string_format(IOPATH, path_gpiobase.c_str(), port, path_direction.c_str());
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path_active_low = string_format(IOPATH, path_gpiobase.c_str(), port, path_active_low.c_str());
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char fpath[128]{};
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sprintf(fpath, "/sys/class/gpio/gpio%d/value", port);
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printf("Gpio::Gpio(int port = %d) \n", port);
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gpio_fd = open(fpath, O_RDWR);
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}
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Gpio::~Gpio()
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{
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close(gpio_fd);
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}
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int Gpio::getPort()
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{
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return port;
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}
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void Gpio::setValue(GpioLevel level)
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{
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// write_dev(path_value, level);
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if (port == 153 || port == 150)
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printf("\n Gpio %d setvalue %d ", port, level == Low ? 0 : 1);
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if (level == Low)
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write(gpio_fd, "0\n", 2);
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else
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write(gpio_fd, "1\n", 2);
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}
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Gpio::GpioLevel Gpio::getValue()
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{
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return (Gpio::GpioLevel)read_dev_i(path_value);
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}
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std::string Gpio::getDirection()
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{
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return read_dev_s(path_direction);
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}
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void Gpio::setDirection(std::string direction)
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{
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if (port == 153 || port == 150)
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printf("\n Gpio %d setDirection %s ", port, direction.c_str());
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write_dev(path_direction, direction);
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}
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void Gpio::setActive(GpioLevel level)
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{
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write_dev(path_active_low, level);
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}
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Gpio::GpioLevel Gpio::getActive()
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{
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return (GpioLevel)read_dev_i(path_active_low);
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}
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void Gpio::setEdge(std::string edge)
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{
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write_dev(path_edge, edge);
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}
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std::string Gpio::getEdge()
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{
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return read_dev_s(path_edge);
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}
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GpioOut::GpioOut(int port) : Gpio(port)
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{
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setDirection(out);
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}
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