armfly/User/app/modbus/modbus.h

#ifndef __MODBUSRTU_H
#define __MODBUSRTU_H

#include "project_var.h"

#define ADDR_CONV_COUNT 7
#define AIR_FRAME_COUNT 8

typedef void (*FuncSend_TypeDef)(const u8 *data, u16 count);
typedef void (*FuncCommand_TypeDef)(void);

#pragma pack(1)
// ModbusRtu 03请求帧
typedef struct
{
    u8  addr;
    u8  function; //
    u16 register_addr;
    u16 register_count;
    u16 crc;
} ModbusRtu_03Frame_Tx_TypeDef;

union ModbusRtu_03Frame_Tx_Union_TypeDef
{
    ModbusRtu_03Frame_Tx_TypeDef Frame03; //
    u8                           send_buff[16];
};

#pragma pack() // 取消自定义字节对齐方式

//
typedef struct
{
    u16 register_addr;  //
    u16 register_count; //
    u16 frame_style;
} Modbus_Frame_TypeDef;

extern void (*func_modbus_send_frame[7])(u16 register_addr, u16 count, void (*Func_Send)(const u8 *data, u16 count));

void mosbus_send_frame01(u16 register_addr, u16 count, FuncSend_TypeDef FuncSend);
void mosbus_send_frame02(u16 register_addr, u16 count, FuncSend_TypeDef Func_Send);
void mosbus_send_frame03(u16 register_addr, u16 count, FuncSend_TypeDef Func_Send);
void mosbus_send_frame04(u16 register_addr, u16 count, FuncSend_TypeDef Func_Send);
void mosbus_send_frame05(u16 register_addr, u16 count, FuncSend_TypeDef Func_Send);
void mosbus_send_frame06(u16 register_addr, u16 count, FuncSend_TypeDef Func_Send);

unsigned short count_crc(const u8 *addr, int num);

#endif