package service
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import (
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"apsClient/conf"
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"apsClient/constvar"
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"apsClient/model"
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"apsClient/model/common"
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"apsClient/pkg/logx"
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"apsClient/pkg/plc"
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"apsClient/pkg/plc/apacheplc4x"
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"apsClient/pkg/plc/modbusx"
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"apsClient/pkg/plccom"
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"encoding/binary"
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"errors"
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"fmt"
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"github.com/spf13/cast"
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"sync"
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)
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// 串口不支持并行读写，所以需要加个锁，防止timeout和资源不可用报错
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var lock sync.Mutex
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func PlcWrite(plcConfig *model.DevicePlc, fieldType constvar.PlcStartAddressType, channel int32, value interface{}) (err error) {
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var (
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startAddress int
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)
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if plcConfig.CurrentTryTimes > plcConfig.MaxTryTimes {
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return plcConfig.CurrentErr
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}
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plcConfig.CurrentTryTimes++
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for _, pc := range plcConfig.Details {
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if pc.FieldName == fieldType && pc.Channel == channel {
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startAddress = pc.StartAddress
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}
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}
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return PlcWriteDirect(plcConfig, startAddress, value)
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}
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func PlcWriteDirect(plcConfig *model.DevicePlc, address int, value interface{}) (err error) {
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lock.Lock()
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defer lock.Unlock()
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var (
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ipAddr string
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)
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defer func() {
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dealErr(err)
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}()
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if plcConfig.Method == constvar.PlcMethodModbusTCP {
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ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
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err = WriteByModbusTCP(ipAddr, address, value)
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if err != nil {
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logx.Errorf("plc write failed, address: %v, value: %v, err: %v", address, value, err.Error())
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return err
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}
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logx.Infof("plc write ok, address: %v, value: %v", address, value)
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} else if plcConfig.Method == constvar.PlcMethodModbusRTU {
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ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
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err = WriteByModbusRTU(plcConfig, address, value)
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if err != nil {
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logx.Errorf("plc write failed, address: %v, value: %v, err: %v", address, value, err.Error())
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return err
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}
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logx.Infof("plc write ok, address: %v, value: %v", address, value)
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} else if plcConfig.Method == constvar.PlcMethodSerial {
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ipAddr = conf.Conf.Services.Serial
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if ipAddr == "" {
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return errors.New("conf.Conf.Services.Serial config not set yet")
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}
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label := fmt.Sprintf("D%d", address)
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return plccom.WritePLC(plccom.DeviceTypeMitsubishi, ipAddr, label, cast.ToInt(value))
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}
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return
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}
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func PlcReadDirect(plcConfig *model.DevicePlc, address int, dataLength int, valueType constvar.PlcStartAddressValueType) (val interface{}, err error) {
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lock.Lock()
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defer lock.Unlock()
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var (
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ipAddr string
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)
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defer func() {
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dealErr(err)
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}()
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if plcConfig.Method == constvar.PlcMethodModbusTCP || plcConfig.Method == constvar.PlcMethodModbusRTU {
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var value []byte
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if plcConfig.Method == constvar.PlcMethodModbusTCP {
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ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
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value, err = ReadByModbusTCP(ipAddr, address, dataLength)
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if err != nil {
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return nil, err
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}
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} else {
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value, err = ReadByModbusRTU(plcConfig, address, dataLength)
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if err != nil {
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return nil, err
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}
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}
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switch valueType {
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case constvar.PlcStartAddressValueTypeString:
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return string(value), nil
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case constvar.PlcStartAddressValueTypeInt32:
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if len(value) == 2 {
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val = binary.BigEndian.Uint16(value)
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} else if len(value) == 4 {
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val = binary.BigEndian.Uint32(value)
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} else {
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logx.Errorf("plc read get an unknown int value: %v, address:%v", value, address)
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return nil, errors.New(fmt.Sprintf("unknown int value：%v", value))
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}
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default:
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if len(value) == 2 {
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val = binary.BigEndian.Uint16(value)
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} else if len(value) == 4 {
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low16Val := uint32(binary.BigEndian.Uint16(value[:2]))
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high16 := uint32(binary.BigEndian.Uint16(value[2:])) << 16
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val = low16Val + high16
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} else {
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logx.Errorf("plc read get an unknown int value: %v, address:%v", value, address)
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return nil, errors.New(fmt.Sprintf("unknown int value：%v", value))
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}
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}
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logx.Infof("plc read ok, address: %v, result: %v, dataLength: %v, value: %v", address, val, dataLength, value)
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return val, nil
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} else if plcConfig.Method == constvar.PlcMethodSerial {
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ipAddr = conf.Conf.Services.Serial
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if ipAddr == "" {
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return nil, errors.New("conf.Conf.Services.Serial config not set yet")
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}
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label := fmt.Sprintf("D%d", address)
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return plccom.ReadPLC(plccom.DeviceTypeMitsubishi, ipAddr, label, dataLength)
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}
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return
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}
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func ReadByModbusTCP(ipAddr string, address, length int) ([]byte, error) {
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if conf.Conf.PLC.Package == constvar.PlcPackageApache {
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return apacheplc4x.ReadHoldingRegister(ipAddr, address, length)
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} else if conf.Conf.PLC.Package == constvar.PlcPackageApacheLongConnection {
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conn, err := plc.GetModbusConnection(ipAddr)
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if err != nil {
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return nil, err
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}
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return plc.ReadHoldingRegister(conn, address, length)
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} else {
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return modbusx.Read(ipAddr, uint16(address), uint16(length))
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}
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}
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func WriteByModbusTCP(ipAddr string, address int, value any) (err error) {
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if conf.Conf.PLC.Package == constvar.PlcPackageApache {
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_, err = apacheplc4x.WriteHoldingRegister(ipAddr, address, value)
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return err
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} else if conf.Conf.PLC.Package == constvar.PlcPackageApacheLongConnection {
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conn, err := plc.GetModbusConnection(ipAddr)
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if err != nil {
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return err
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}
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_, err = plc.WriteHoldingRegister(conn, address, value)
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return err
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} else {
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return modbusx.Write(ipAddr, uint16(address), cast.ToInt(value))
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}
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}
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func ReadByModbusRTU(plcConfig *model.DevicePlc, address, length int) ([]byte, error) {
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rtuConfig := &common.RTUConfig{
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BaudRate: plcConfig.BaudRate,
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SerialName: plcConfig.SerialName,
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DataBit: plcConfig.DataBit,
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StopBit: plcConfig.StopBit,
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Parity: plcConfig.Parity,
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}
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if conf.Conf.PLC.Package == constvar.PlcPackageApache {
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return apacheplc4x.ReadHoldingRegisterByRTU(rtuConfig, address, length)
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} else {
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return modbusx.ReadByRTU(rtuConfig, uint16(address), uint16(length))
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}
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}
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func WriteByModbusRTU(plcConfig *model.DevicePlc, address int, value any) (err error) {
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rtuConfig := &common.RTUConfig{
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BaudRate: plcConfig.BaudRate,
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SerialName: plcConfig.SerialName,
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DataBit: plcConfig.DataBit,
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StopBit: plcConfig.StopBit,
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Parity: plcConfig.Parity,
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}
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if conf.Conf.PLC.Package == constvar.PlcPackageApache {
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_, err = apacheplc4x.WriteHoldingRegisterByRTU(rtuConfig, address, value)
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return err
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} else {
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return modbusx.WriteByRTU(rtuConfig, uint16(address), cast.ToInt(value))
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}
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}
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func PlcIsConnect() bool {
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return IsConnect()
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}
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func dealErr(err error) {
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if err != nil {
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FailureRemainingOpportunitiesDecr() //减少失败剩余机会
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} else {
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FailureRemainingOpportunitiesReset() //重置失败剩余机会
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}
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}
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var connectionStatus sync.Map
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const (
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defaultFailureRemainingOpportunities = 20
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)
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func IsConnect() bool {
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val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
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if !ok {
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return false
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}
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failureRemainingOpportunities := val.(int)
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return failureRemainingOpportunities > 0
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}
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func FailureRemainingOpportunitiesDecr() {
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val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
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if !ok {
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return
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}
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failureRemainingOpportunities := val.(int)
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if failureRemainingOpportunities > 0 {
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failureRemainingOpportunities--
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}
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connectionStatus.Store(conf.Conf.CurrentDeviceID, failureRemainingOpportunities)
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return
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}
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func FailureRemainingOpportunitiesReset() {
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val, ok := connectionStatus.Load(conf.Conf.CurrentDeviceID)
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if !ok || val.(int) < defaultFailureRemainingOpportunities {
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connectionStatus.Store(conf.Conf.CurrentDeviceID, defaultFailureRemainingOpportunities)
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return
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}
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return
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}
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