Merge branch 'master' of https://git.code.tencent.com/beijing-rtss-test/bj-rtsts-server-go
This commit is contained in:
commit
78a9e1d07e
2
go.mod
2
go.mod
@ -9,6 +9,7 @@ require (
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github.com/golang/protobuf v1.5.3
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github.com/google/uuid v1.4.0
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github.com/sagikazarmark/slog-shim v0.1.0
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github.com/snksoft/crc v1.1.0
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github.com/spf13/viper v1.18.1
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github.com/stretchr/testify v1.8.4
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github.com/swaggo/files v1.0.1
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@ -47,7 +48,6 @@ require (
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github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
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github.com/sagikazarmark/locafero v0.4.0 // indirect
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github.com/simonvetter/modbus v1.6.0 // indirect
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github.com/snksoft/crc v1.1.0 // indirect
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github.com/sourcegraph/conc v0.3.0 // indirect
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github.com/yohamta/donburi v1.3.9 // indirect
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go.uber.org/atomic v1.9.0 // indirect
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178
third_party/message/radar.go
vendored
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178
third_party/message/radar.go
vendored
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@ -0,0 +1,178 @@
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package message
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"strings"
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)
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const (
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radar_head1 byte = 0x0C
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radar_head2 byte = 0xFC
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)
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type Radar struct {
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AutoInc byte //自增计数器,每发送一次自增1.范围0-256
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RealSpeed *RadarData //实际速度
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DriftCounterS1 *RadarData //位移计数器S1
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DriftCounterS2 *RadarData //位移计数器S1
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InnerCheck1 byte //内部使用,我们只有在协议效验时用到该两个字节
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InnerCheck2 byte //内部使用,我们只有在协议效验时用到该两个字节
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State *RadarState
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Tail byte
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}
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type RadarData struct {
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sourceData byte
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valRange byte
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}
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type RadarState struct {
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State byte
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}
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func (r *Radar) Decode(data []byte) error {
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if len(data) < 13 {
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return fmt.Errorf("雷达数据预读取失败,需要读取13字节,可读取:%v", len(data))
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}
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buf := bytes.NewBuffer(data)
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_, _, err := readHeader(buf)
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if err != nil {
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return err
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}
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autoInc := readByteData(buf)
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speed := readSpeedOrCounter(buf)
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s1 := readSpeedOrCounter(buf)
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s2 := readSpeedOrCounter(buf)
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i1, i2 := readRadarInnerData(buf)
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state := readRadarState(buf)
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tail := readByteData(buf)
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r.AutoInc = autoInc
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r.RealSpeed = speed
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r.DriftCounterS1 = s1
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r.DriftCounterS2 = s2
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r.InnerCheck1 = i1
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r.InnerCheck2 = i2
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r.State = state
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r.Tail = tail
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if !r.checkTail() {
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return fmt.Errorf("数据解析完成,但协议效验不通过")
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}
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return nil
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}
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func (rd *RadarData) getSumVal() byte {
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return rd.sourceData + rd.valRange
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}
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// GetModel 第6位 == SW_Mode0,第7位 == SW_Mode1
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// 11:两个天线和双通道都OK
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// 10:DRS05_Single-Mode 40度,50度的天线或通道故障
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// 01:DRS05_Single-Mode 50度,40度的天线或通道故障
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// 00:错误模式 双侧天线或通道都故障
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// 模式的工作差别:工作在11.模式时效果最好。单模式10或01时可信度下降。
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func (s *RadarState) GetModel() string {
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arr := s.getBitsStateArr()
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return bitStateStr(arr[6:])
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}
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// GetSyntheticalState 第3位=计算状态位,第4位=信号质量标志位,第5位=Black5out标志位
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// 110:计算状态,高质量
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// 地面信号反射良好,高精度的信号计算
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// 100: 计算状态,低质量
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// 地面信号反射一般,信号计算可能会有缺陷
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// 001: 处于Blackout 状态
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// 车辆行驶时无地面反射信号,无法进行信号计算
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// 000: 信号搜寻状态
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// 在整个频率范围内搜寻多普勒信号,此时的速度和位移信息无效,当频率搜寻正确后,会转为计算模式。
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func (s *RadarState) GetSyntheticalState() string {
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arr := s.getBitsStateArr()
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return bitStateStr(arr[3:6])
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}
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// GetDirState 第1位 =方向状态
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// 1:行驶方向有效
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// 0:行驶方向无效
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func (s *RadarState) GetDirState() string {
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arr := s.getBitsStateArr()
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return bitStateStr(arr[1:2])
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}
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// GetDir 第0位 =行驶方向
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// 1:前向
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// 0:反向
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func (s *RadarState) GetDir() string {
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arr := s.getBitsStateArr()
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return bitStateStr(arr[0:1])
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}
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func (s *RadarState) getBitsStateArr() []byte {
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bits := make([]byte, 8)
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for i := 0; i < 8; i++ {
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bit := s.State >> uint(i) & 1
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bits[i] = bit
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}
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return bits
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}
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func bitStateStr(data []byte) string {
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var build = strings.Builder{}
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for _, d := range data {
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build.WriteString(fmt.Sprintf("%v", d))
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}
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return build.String()
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}
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func (r *Radar) checkTail() bool {
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var sum = int(radar_head1) + int(radar_head2) + int(r.AutoInc+r.RealSpeed.getSumVal()+r.DriftCounterS1.getSumVal()+r.DriftCounterS2.getSumVal()+r.InnerCheck1+r.InnerCheck2+r.State.State)
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return r.Tail == byte(^sum+1)
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}
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func readHeader(buf *bytes.Buffer) (byte, byte, error) {
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/*if buf.Len() < 2 {
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return 0, 0, fmt.Errorf("雷达协议解析头部没有可读充足的数据")
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}*/
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d1, _ := buf.ReadByte()
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d2, _ := buf.ReadByte()
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if !(d1 == radar_head1 && d2 == radar_head2) {
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return 0, 0, fmt.Errorf("雷达协议解析头部未找到对应的头部帧")
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}
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return d1, d2, nil
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}
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func readByteData(buf *bytes.Buffer) byte {
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/* if buf.Len() < 1 {
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return 0, fmt.Errorf("")
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}*/
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d, _ := buf.ReadByte()
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return d
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}
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func readSpeedOrCounter(buf *bytes.Buffer) *RadarData {
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/* if buf.Len() < 2 {
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return nil, fmt.Errorf("")
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}*/
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ss, _ := buf.ReadByte()
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limit, _ := buf.ReadByte()
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return &RadarData{sourceData: ss, valRange: limit}
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}
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func readRadarInnerData(buf *bytes.Buffer) (byte, byte) {
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/*if buf.Len() < 2 {
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return 0, 0, fmt.Errorf("")
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}*/
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i1, _ := buf.ReadByte()
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i2, _ := buf.ReadByte()
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return i1, i2
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}
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func readRadarState(buf *bytes.Buffer) *RadarState {
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/*if buf.Len() < 1 {
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return nil, fmt.Errorf("")
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}*/
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state, _ := buf.ReadByte()
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return &RadarState{State: state}
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}
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func driftCounter(buf *bytes.Buffer) (uint16, error) {
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if buf.Len() < 2 {
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return 0, fmt.Errorf("")
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}
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var driftCounter uint16
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binary.Read(buf, binary.LittleEndian, &driftCounter)
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return driftCounter, nil
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}
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