wd_gpiolines.h

/*
 * Developer : Alexey Zakharov (alexey.zakharov@vectioneer.com)
 * All rights reserved. Copyright (c) 2018 VECTIONEER.
 */
 
#ifndef MOTORCORTEX_CORE_WD_GPIOLINES_H
#define MOTORCORTEX_CORE_WD_GPIOLINES_H
 
#include <vector>
#include <initializer_list>
#include <linux/gpio.h>
 
namespace mcx {
 
namespace watchdog {
 
enum GpioLineDir {
  INPUT = GPIOHANDLE_REQUEST_INPUT,
  OUTPUT = GPIOHANDLE_REQUEST_OUTPUT
};
 
class GpioLines {
public:
 
  GpioLines();
 
  GpioLines(std::initializer_list<unsigned int> line_offset_list);
 
  ~GpioLines();
 
  bool open(const char* device, GpioLineDir dir);
 
  bool update();
 
  void add(unsigned int line_offset);
 
  void add(std::initializer_list<unsigned int> line_offset_list);
 
  bool set(unsigned int line_offset, bool value);
 
  bool set(std::initializer_list<unsigned int> line_offset_list, bool value);
 
  bool get(unsigned int line_offset) const;
 
  unsigned int length() const;
 
  const unsigned int* lines() const;
 
  const gpiohandle_data* data() const;
 
private:
 
  std::vector<unsigned int> mapping_;
  std::vector<unsigned int> lines_;
  gpiohandle_data data_{};
  GpioLineDir dir_{GpioLineDir::INPUT};
  int fd_{};
};
 
}  // namespace watchdog
 
}  // namespace mcx
 
#endif //MOTORCORTEX_CORE_WD_GPIOLINES_H