#ifndef _MODBUS_H
#define _MODBUS_H

// Includes
#include "modbus_constants.h"
#include "stdlib.h"

void    Modbus_TCP_Handler(unsigned char*, uint8_t);
static unsigned char modbus_rx_buf[128];

#define CRC_COUNT_OFFSET            3

#define MODBUS_RHR_CMD              (unsigned char)0x03
#define MODBUS_RIR_CMD              (unsigned char)0x04
#define MODBUS_WSR_CMD              (unsigned char)0x06

void modbus_wsr_answer(void);
void modbus_rhr_answer(void);
unsigned char modbus_get_poll(void);
void holding_reg_write(uint16_t, uint16_t);
void holding_reg_read(uint16_t, uint16_t*);
void input_reg_write(uint16_t, uint16_t);
void input_reg_read(uint16_t, uint16_t*);
uint16_t get_wr_reg_addr(void);
uint16_t get_wr_reg_val(void);
unsigned char get_modbus_id(void);
unsigned char get_modbus_broadcast_id(void);
void set_modbus_id(unsigned char);
void set_modbus_broadcast_id(unsigned char);


void modbus_connect_callback_send_byte(void (*s)(USART_TypeDef*, unsigned char));
void modbus_connect_callback_tim_en(void (*s)(TIM_TypeDef*));
void modbus_connect_callback_tim_dis(void (*s)(TIM_TypeDef*));
void modbus_connect_callback_send_buf_tcp(int32_t (*s)(uint8_t, unsigned char*, uint16_t));
void modbus_connect_callback_rir_poll(void (*s)(void));
void modbus_connect_callback_rhr_poll(void (*s)(void));
void modbus_connect_callback_wsr_poll(void (*s)(uint16_t, uint16_t));
void Modbus_GetByte(unsigned char);
void Modbus_TIM_Handler(void);
void modbus_poll(void);
void modbus_reset(void);

#endif