T640_DTU/USER0813/Modbus.h

#ifndef	__MODBUS_H
#define __MODBUS_H
/***********************************************************************************/

#include "includes.h"
#define MODBUS_REG_NUM_MAX 256 //运行内存不够，不能太大
#define HOLDINGREG 0x03
#define WRITESINGLEREG 0x06

typedef struct SUT_MODBUS_REGLIST
{
	unsigned char slave;
	unsigned short addr;
	short value;
}__attribute__((packed)) SUT_MODBUS_REGLIST;

typedef struct SUT_MODBUS_REGPACK
{
	unsigned short RegNum;
	SUT_MODBUS_REGLIST RegList[MODBUS_REG_NUM_MAX];
}__attribute__((packed)) SUT_MODBUS_REGPACK;

extern SUT_MODBUS_REGPACK sutModbusRegPack;
extern unsigned char g_ucModbusRefreshEN;
extern unsigned char g_ucModbusRefreshSHUTDOWN;
extern unsigned short g_ucRegNumCount;
extern unsigned short g_ucModbusRefreshTimeOut;
unsigned char ModbusRecvProcess(unsigned char *pMsg,int len,unsigned short num);
void ModbusCmdReadOneValue(SUT_MODBUS_REGLIST *pMsg,unsigned short num);
void ModbusRefreshValue(void);
void ModbusCmdSetValue(SUT_MODBUS_REGLIST *pMsg);
#endif
/***********************************************************************************/