//
// Created by yingluo907 on 2019/4/11.
//
#include "Gpio.h"
#include "DevUtil.h"
#include "stringex.hpp"
#include <sys/stat.h>
#include <unistd.h>
#include <linux/gpio.h>
#include <fcntl.h>

#define IOPATH "%s/gpio%d/%s"

const std::string Gpio::falling = "falling";
const std::string Gpio::rising = "rising";
const std::string Gpio::both = "both";
const std::string Gpio::none = "none";

const std::string Gpio::in = "in";
const std::string Gpio::out = "out";

Gpio::Gpio(int port)
{
	this->port = port;
	path_value = string_format(IOPATH, path_gpiobase.c_str(), port, path_value.c_str());
	path_edge = string_format(IOPATH, path_gpiobase.c_str(), port, path_edge.c_str());
	path_direction = string_format(IOPATH, path_gpiobase.c_str(), port, path_direction.c_str());
	path_active_low = string_format(IOPATH, path_gpiobase.c_str(), port, path_active_low.c_str());
	char fpath[128]{};
	sprintf(fpath, "/sys/class/gpio/gpio%d/value", port);
	printf("Gpio::Gpio(int port = %d) \n", port);
	gpio_fd = open(fpath, O_RDWR);
}

Gpio::~Gpio()
{
	close(gpio_fd);
}
int Gpio::getPort()
{
	return port;
}

void Gpio::setValue(GpioLevel level)
{
	// write_dev(path_value, level);
	if (port == 153 || port == 150)
		printf("\n Gpio %d setvalue %d ", port, level == Low ? 0 : 1);
	if (level == Low)
		write(gpio_fd, "0\n", 2);
	else
		write(gpio_fd, "1\n", 2);
}

Gpio::GpioLevel Gpio::getValue()
{
	return (Gpio::GpioLevel)read_dev_i(path_value);
}

std::string Gpio::getDirection()
{
	return read_dev_s(path_direction);
}

void Gpio::setDirection(std::string direction)
{
	if (port == 153 || port == 150)
		printf("\n Gpio %d setDirection %s ", port, direction.c_str());
	write_dev(path_direction, direction);
}

void Gpio::setActive(GpioLevel level)
{
	write_dev(path_active_low, level);
}

Gpio::GpioLevel Gpio::getActive()
{
	return (GpioLevel)read_dev_i(path_active_low);
}

void Gpio::setEdge(std::string edge)
{
	write_dev(path_edge, edge);
}

std::string Gpio::getEdge()
{
	return read_dev_s(path_edge);
}

GpioOut::GpioOut(int port) : Gpio(port)
{
	setDirection(out);
}