#ifndef sdm_h
#define sdm_h

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <stdbool.h>
#include <modbus/modbus.h>

#define SDM_OK		 0
#define SDM_EMPTY	-1
#define SDM_MB_ERR	-2
#define SDM_ADDR_ERR	-3
#define SDM_NAME_ERR	-4
#define SDM_TYPE_ERR	-5
#define SDM_COMM_ERR	-6
#define SDM_NOT_IMPL	-7
#define SDM_MEM_ERR	-8

enum sdm_types {
	SDMNONE,
	SDM230M,
	SDM630M,
	SDM72DM
};

typedef struct {
	const char *name;
	const char *unit;
	const unsigned int regno;
} sdm_registers_t;

typedef union {
	uint16_t v16[2];
	float vf;
} __attribute__ ((packed)) sdm_values_t;

typedef struct {
	modbus_t *mb;
	int address;
	char *friendlyname;
	enum sdm_types type;
	sdm_values_t *values;
	bool valid;
} sdm_t;

sdm_t *sdm_new(modbus_t *mb, int address, char *friendlyname, enum sdm_types type, int *error);
int sdm_free(sdm_t *sdm);
int sdm_update(sdm_t *sdm);
const char *sdm_gettypename(sdm_t *sdm);
int sdm_print_csv(sdm_t *sdm, char **csv);
int sdm_print_csv_header(sdm_t *sdm, char **header);
int sdm_print_json(sdm_t *sdm, char **json);

#endif