/*
 * calibration.h
 *
 *  Created on: Dec 22, 2025
 *      Author: Arpita Srivastava
 */

#ifndef __CALIBRATION_H__
#define __CALIBRATION_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <unistd.h>


#define FIRMWARE_VERSION    "v0.1.0"      // Major.Minor.Build

#define MIN_VERSION_LENGTH  1             // Minimum version string length
#define MAX_VERSION_LENGTH  13            // Maximum version string length

#define DEFAULT_COEFF       0.0F          // Default calibration coefficient

#define MIN_COEFF           -1000.0F      // Minimum valid calibration coefficient
#define MAX_COEFF           1000.0F       // Maximum valid calibration coefficient

/**
 * @brief Flash structure for calibration coefficients.
 */
struct __attribute__((packed)) cal_file
{
	float coeff1 = DEFAULT_COEFF;
	float coeff2 = DEFAULT_COEFF;
	float coeff3 = DEFAULT_COEFF;
	float coeff4 = DEFAULT_COEFF;
	float coeff5 = DEFAULT_COEFF;
	float coeff6 = DEFAULT_COEFF;
	float coeff7 = DEFAULT_COEFF;
	float coeff8 = DEFAULT_COEFF;
	float coeff9 = DEFAULT_COEFF;
	float coeff10 = DEFAULT_COEFF;
	float coeff11 = DEFAULT_COEFF;
	float coeff12 = DEFAULT_COEFF;

}const default_cal_data;


/**
 * @brief Flash structure for hardware version and serial number.
 */
struct __attribute__((packed)) ser_file
{
	char hw_ver[MAX_VERSION_LENGTH] = "0.0.0";
	char ser_num[MAX_VERSION_LENGTH] = "0.0.0";

}const default_ser_data;

extern ssize_t cal_write(const void *buf, size_t count);

extern ssize_t cal_read(void *buf, size_t count);

extern off_t cal_lseek(off_t offset, int whence);

extern void cal_open(void);

extern ssize_t ser_write(const void *buf, size_t count);

extern ssize_t ser_read(void *buf, size_t count);

extern off_t ser_lseek(off_t offset, int whence);

extern void ser_open(void);

#ifdef __cplusplus
} // extern "C"
#endif

#endif /* __CALIBRATION_H__ */