#ifndef __MODBUS_RTU_H
#define __MODBUS_RTU_H

#include "apps_gather.h"

/*--------------------------------- 宏定义 -----------------------------------*/
//功能码
#define ReadCoilState       	0x01         //读取线圈状态
#define ReadDisInputState		0x02         //读取输入状态
#define ReadHoldReg        		0x03         //读取保持寄存器
#define ReadInputReg       		0x04         //读取输入寄存器
#define WriteSingleCoil    		0x05         //强制写单线圈输出状态
#define WriteSingleReg      	0x06         //预设(写)单寄存器
#define WriteMultiCoil      	0x0F         //强制写多线圈输出状态
#define WriteMultiReg       	0x10         //预设(写)多寄存器

#define COIL_ADD_MIN       		0x00
#define COIL_ADD_MAX       		0x64
#define MAX_COIL_NUM       		((COIL_ADD_MAX) - (COIL_ADD_MIN) + 1)

#define DIS_ADD_MIN       		0x00
#define DIS_ADD_MAX       		0x64
#define MAX_DIS_NUM       		((DIS_ADD_MAX) - (DIS_ADD_MIN) + 1)

#define INPUT_REG_ADD_MIN       0x00
#define INPUT_REG_ADD_MAX       0x64
#define MAX_INPUT_REG_NUM       ((INPUT_REG_ADD_MAX) - (INPUT_REG_ADD_MIN) + 1)

#define HOLD_REG_ADD_MIN        0x00
#define HOLD_REG_ADD_MAX        0x64
#define MAX_HOLD_REG_NUM        ((HOLD_REG_ADD_MAX) - (HOLD_REG_ADD_MIN) + 1)

#define BROADCAST_ADDRESS   	0x00
#define LOCAL_ADDRESS       	0x01

#define MAKEWORD(a,b)      		((uint16_t)(((uint8_t)(a)) | ((uint16_t)((uint8_t)(b))) << 8))

 #define MAX_SIZE				255

typedef enum
{
    MB_EX_NONE = 0x00,
    MB_EX_ILLEGAL_FUNCTION = 0x01,
    MB_EX_ILLEGAL_DATA_ADDRESS = 0x02,
    MB_EX_ILLEGAL_DATA_VALUE = 0x03,
    MB_EX_SLAVE_DEVICE_FAILURE = 0x04,
    MB_EX_ACKNOWLEDGE = 0x05,
    MB_EX_SLAVE_BUSY = 0x06,
    MB_EX_MEMORY_PARITY_ERROR = 0x08,
    MB_EX_GATEWAY_PATH_FAILED = 0x0A,
    MB_EX_GATEWAY_TGT_FAILED = 0x0B
} eMBException;

typedef union var_reg
{
   uint16_t    SamData [MAX_INPUT_REG_NUM];         // 采样数据
   uint16_t    InputReg[MAX_INPUT_REG_NUM];         // Reg 与 SamData
}Var_Reg;


extern uint8_t  CoilState[(MAX_COIL_NUM + 7) / 8];
extern uint8_t  DisState [(MAX_DIS_NUM + 7) / 8];
extern uint16_t InputReg[MAX_INPUT_REG_NUM];
extern uint16_t HoldReg[MAX_HOLD_REG_NUM];
extern Var_Reg  SamVarReg;

//MODBUS_RTU
void modbus_analysis_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void modbus_process_rtu(void);
void readcoilstate_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void readdisinputstate_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void readholdreg_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void readinputreg_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void writesinglereg_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void writemultireg_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void writesinglecoil_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void writemulticoil_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen);
void modbus_errfunction_rtu(uint8_t uCmdCode, uint8_t uErrorCode);

//MODBUD
uint16_t ModbusCRC16(uint8_t *ptr, uint16_t len);
void GetOneCoilVal(uint16_t wCoilAddr, uint8_t *pCoilVal);
void GetOneDisInputVal(uint16_t wDisInputAddr, uint8_t *pDisInputVal);
uint16_t GetHoldRegData(uint16_t RegAdd);
uint16_t GetInputRegData(uint16_t RegAdd);
void WriteHoldRegData(uint16_t wRegAddr, uint16_t RegData);
void WriteOneCoilData(uint16_t wRegAddr, uint16_t RegData);


#endif