#ifndef __PD_MODBUS_H__
#define __PD_MODBUS_H__

#ifdef CFG_DEV_TYPE_LAND_PD

#define WRITE       1
#define READ        0

#define MODBUS_DEVICE_TYPE_ADDR         0x0
#define MODBUS_IR_CURRENT_ADDR          0x10     // 铁芯
#define MODBUS_IR_CURRENT_LEN           2
#define MODBUS_DC_CURRENT_ADDR          0x34    // 直流偏磁
#define MODBUS_DC_CURRENT_LEN           2

#define MODBUS_UNIT_IR 0x01

#define MODBUS_CURRENT_LEN  4
#define MODBUS_ADDR_ALARM   0x32
#define MODBUS_ALARM_LEN    2

#define DEVICE_IR_TYPE     0x0304
#define DEVICE_DC_TYPE     0x0305

#define POS_UINT_ID     6
#define POS_FUNCTION    7   

#define MAX_SLOT        6

typedef struct 
{
    uint8_t unit_id;
    uint8_t status;
    uint16_t type;
    uint32_t current;
    uint16_t alarm;
} stat_t;


// 定义Modbus TCP MBAP头
//#pragma pack(push, 1)
typedef struct 
{
    uint16_t transaction_id;    // 事务处理标识
    uint16_t protocol_id;       // 协议标识
    uint16_t length;            // 数据长度
    uint8_t unit_id;            // 设备地址
    uint8_t function_code;      // 功能码
} modbus_tcp_t;
//#pragma pack(pop)

typedef struct
{
    uint8_t function;
    uint16_t address;
    uint16_t length;
} pdu_t;

typedef struct
{
    int fd;
    uint8_t txbuf[512];
    uint8_t rxbuf[512];
    stat_t stat[MAX_SLOT];
}modbus_t;

extern int32_t modbus_handle_init(void);
extern int32_t modbus_handle_init_after(void);
#endif
#endif