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//Chris Xiong 2018
//3-Clause BSD License
#ifndef SENSORS_HPP
#define SENSORS_HPP
#include <cstdint>
#include <string>
#include <any>
#include <filesystem>
#include <functional>
#include <mutex>
#include <unordered_map>
#include <tuple>
#include <vector>
#define IIODEV_SYSFS_PATH_BASE "/sys/bus/iio/devices/iio:device"
#define DEV_PATH "/dev/iio:device"
#define PLATFORM_IS_LITTLEENDIAN (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__)
namespace filesystem=std::filesystem;
struct scan_t
{
bool is_le;
bool is_signed;
uint8_t bits,storagebits;
uint8_t shift,repeat;
};
class SensorBase
{
private:
int devfd=-1;
int workerquit=0;
int readsize=0;
int paused=0;
int qpipe[2];
std::mutex read_m;
std::function<void(SensorBase*)> readercb;
std::vector<std::tuple<int,std::string,scan_t>> enabled_scan_elem;
void enable_buffer();
void parse_type_string(std::string type,scan_t* ti);
void readbuffer();
protected:
std::string type,sensor_basename;
filesystem::path devbufpath;
filesystem::path sysfspath;
std::unordered_map<std::string,std::any> dict;
void enable_scan_element(std::string elem);
virtual void enable_scan_elements()=0;
virtual void update_values()=0;
public:
virtual ~SensorBase(){}
bool init(int id,std::string _sensor_basename);
void deinit();
void reset();
void worker();
void quit_worker();
void pause_worker();
void resume_worker();
void set_reader_callback(std::function<void(SensorBase*)> cb);
static std::string get_type(int id);
static int detect_sensor(std::string type);
};
#endif
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