ATY_LIB/MODBUS_S_LOW_ATY.h

/**
* @file MODBUS_S_LOW_ATY.h
*
* @param Project DEVICE_GENERAL_ATY_LIB
*
* @author ATY
*
* @copyright
*       - Copyright 2017 - 2026 MZ-ATY
*       - This code follows:
*           - MZ-ATY Various Contents Joint Statement -
*               <a href="https://mengze.top/MZ-ATY_VCJS">
*                        https://mengze.top/MZ-ATY_VCJS</a>
*           - CC 4.0 BY-NC-SA -
*               <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
*                        https://creativecommons.org/licenses/by-nc-sa/4.0/</a>
*       - Your use will be deemed to have accepted the terms of this statement.
*
* @brief functions of modbus for all device
*
* @version
*       - 1_01_221029 > ATY
*           -# Preliminary version, first Release
********************************************************************************
*/

#ifndef __MODBUS_S_LOW_ATY_H
#define __MODBUS_S_LOW_ATY_H

#include "INCLUDE_ATY.h"
#include "ALGO_CRC_ATY.h"

/******************************* For user *************************************/
// set --model-large at 51
#ifndef MODBUS_REG_HOLDING_SIZE
#define MODBUS_REG_HOLDING_SIZE                    100
#endif

#ifndef MODBUS_ADDR
#define MODBUS_ADDR                                0x01
#endif

/******************************************************************************/

struct MODBUS_S_LOW_ATY_Dev{
    uint8_t addr;
    uint16_t mbRegs[MODBUS_REG_HOLDING_SIZE];

    // if platform is big endian(51 core), set 1,
    // output is always big endian include float and 32
    uint8_t bigEndian;
    uint8_t(*uartSendBytes)();
    uint8_t setFlag;

    uint8_t lock;
};

#define MODBUS_FUNC_READ_COILS                     0x01
#define MODBUS_FUNC_READ_DISCRETE_INPUTS           0x02
#define MODBUS_FUNC_READ_HOLDING_REGISTERS         0x03
#define MODBUS_FUNC_READ_INPUT_REGISTERS           0x04
#define MODBUS_FUNC_WRITE_SINGLE_COIL              0x05
#define MODBUS_FUNC_WRITE_SINGLE_HOLDING_REGISTERS 0x06
#define MODBUS_FUNC_WRITE_MULTY_HOLDING_REGISTERS  0x10

union mbFloatChange{ float f_t; uint8_t u8_t[4]; };

uint8_t Modbus_Process(uint8_t* buf, uint8_t len, struct MODBUS_S_LOW_ATY_Dev* dev);
void UpdateMbRegsFromFloat(float* floatBuf, struct MODBUS_S_LOW_ATY_Dev* dev);
void TransMbRegsToFloat(float* floatBuf, struct MODBUS_S_LOW_ATY_Dev* dev);

#endif /* __MODBUS_S_LOW_ATY_H */

/******************************** End Of File *********************************/