#ifndef _MODBUS_REG_H
#define _MODBUS_REG_H


#include <stdint.h>

#define MODBUS_REG_DEFAULT_VAL 	0xFFFFFFFF
#define RW_REGISTERS_MAXNUM     125
#define MODBUS_REG_BLOCK_NUM    1




typedef struct {
    uint8_t block_id;
    uint32_t address;
    uint16_t size;
} ModbusRegDataBlock_t;

typedef enum {
    RW_OPERATION_READ,
    RW_OPERATION_WRITE
} ModbusRegOp_t;

typedef struct {
    uint8_t slaveId;    /* 从机地址 */
    ModbusRegOp_t operation;  /* 操作类型 */
    uint16_t startAddr; /* 起始地址 */
    uint8_t num;        /* 寄存器个数 */
    uint16_t registers[RW_REGISTERS_MAXNUM];    /* 寄存器数据 */
}ModbusRegRwData_t;

/* public funtion prototype. */
uint8_t modbus_reg_proxy(ModbusRegRwData_t * rw_data);

#endif