package modbusx

import (
	"encoding/json"
)

func Read(ipAddr string, address uint16, quantity uint16) (data []byte, err error) {
	cli := getModbusConnection(ipAddr)
	data, err = cli.ReadHoldingRegisters(address, quantity)
	return
}

func Write(ipAddr string, address uint16, value interface{}) (err error) {
	bytesVal, err := json.Marshal(value)
	if err != nil {
		return err
	}
	cli := getModbusConnection(ipAddr)
	_, err = cli.WriteMultipleRegisters(address, uint16(len(bytesVal)), bytesVal)
	if err != nil {
		return err
	}
	//time.Sleep(time.Second)
	//// 校验写入的数据
	//result, err := cli.ReadHoldingRegisters(address, uint16(len(bytesVal)))
	//if err != nil {
	//	return err
	//}
	//resultVal := int(binary.BigEndian.Uint16(result))
	//valueInt := cast.ToInt(value)
	//if resultVal != valueInt {
	//	return errors.New("write result not equal read result")
	//}
	return nil
}