This commit is contained in:
walker 2024-01-22 15:56:46 +08:00
commit 78a9e1d07e
2 changed files with 179 additions and 1 deletions

2
go.mod
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@ -9,6 +9,7 @@ require (
github.com/golang/protobuf v1.5.3 github.com/golang/protobuf v1.5.3
github.com/google/uuid v1.4.0 github.com/google/uuid v1.4.0
github.com/sagikazarmark/slog-shim v0.1.0 github.com/sagikazarmark/slog-shim v0.1.0
github.com/snksoft/crc v1.1.0
github.com/spf13/viper v1.18.1 github.com/spf13/viper v1.18.1
github.com/stretchr/testify v1.8.4 github.com/stretchr/testify v1.8.4
github.com/swaggo/files v1.0.1 github.com/swaggo/files v1.0.1
@ -47,7 +48,6 @@ require (
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
github.com/sagikazarmark/locafero v0.4.0 // indirect github.com/sagikazarmark/locafero v0.4.0 // indirect
github.com/simonvetter/modbus v1.6.0 // indirect github.com/simonvetter/modbus v1.6.0 // indirect
github.com/snksoft/crc v1.1.0 // indirect
github.com/sourcegraph/conc v0.3.0 // indirect github.com/sourcegraph/conc v0.3.0 // indirect
github.com/yohamta/donburi v1.3.9 // indirect github.com/yohamta/donburi v1.3.9 // indirect
go.uber.org/atomic v1.9.0 // indirect go.uber.org/atomic v1.9.0 // indirect

178
third_party/message/radar.go vendored Normal file
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@ -0,0 +1,178 @@
package message
import (
"bytes"
"encoding/binary"
"fmt"
"strings"
)
const (
radar_head1 byte = 0x0C
radar_head2 byte = 0xFC
)
type Radar struct {
AutoInc byte //自增计数器每发送一次自增1.范围0-256
RealSpeed *RadarData //实际速度
DriftCounterS1 *RadarData //位移计数器S1
DriftCounterS2 *RadarData //位移计数器S1
InnerCheck1 byte //内部使用,我们只有在协议效验时用到该两个字节
InnerCheck2 byte //内部使用,我们只有在协议效验时用到该两个字节
State *RadarState
Tail byte
}
type RadarData struct {
sourceData byte
valRange byte
}
type RadarState struct {
State byte
}
func (r *Radar) Decode(data []byte) error {
if len(data) < 13 {
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))
}
buf := bytes.NewBuffer(data)
_, _, err := readHeader(buf)
if err != nil {
return err
}
autoInc := readByteData(buf)
speed := readSpeedOrCounter(buf)
s1 := readSpeedOrCounter(buf)
s2 := readSpeedOrCounter(buf)
i1, i2 := readRadarInnerData(buf)
state := readRadarState(buf)
tail := readByteData(buf)
r.AutoInc = autoInc
r.RealSpeed = speed
r.DriftCounterS1 = s1
r.DriftCounterS2 = s2
r.InnerCheck1 = i1
r.InnerCheck2 = i2
r.State = state
r.Tail = tail
if !r.checkTail() {
return fmt.Errorf("数据解析完成,但协议效验不通过")
}
return nil
}
func (rd *RadarData) getSumVal() byte {
return rd.sourceData + rd.valRange
}
// GetModel 第6位 == SW_Mode0,第7位 == SW_Mode1
// 11:两个天线和双通道都OK
// 10DRS05_Single-Mode 40度,50度的天线或通道故障
// 01DRS05_Single-Mode 50度,40度的天线或通道故障
// 00错误模式 双侧天线或通道都故障
// 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。
func (s *RadarState) GetModel() string {
arr := s.getBitsStateArr()
return bitStateStr(arr[6:])
}
// 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
// 110计算状态高质量
// 地面信号反射良好,高精度的信号计算
// 100 计算状态,低质量
// 地面信号反射一般,信号计算可能会有缺陷
// 001 处于Blackout 状态
// 车辆行驶时无地面反射信号,无法进行信号计算
// 000 信号搜寻状态
// 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。
func (s *RadarState) GetSyntheticalState() string {
arr := s.getBitsStateArr()
return bitStateStr(arr[3:6])
}
// GetDirState 第1位 =方向状态
// 1行驶方向有效
// 0行驶方向无效
func (s *RadarState) GetDirState() string {
arr := s.getBitsStateArr()
return bitStateStr(arr[1:2])
}
// GetDir 第0位 =行驶方向
// 1前向
// 0反向
func (s *RadarState) GetDir() string {
arr := s.getBitsStateArr()
return bitStateStr(arr[0:1])
}
func (s *RadarState) getBitsStateArr() []byte {
bits := make([]byte, 8)
for i := 0; i < 8; i++ {
bit := s.State >> uint(i) & 1
bits[i] = bit
}
return bits
}
func bitStateStr(data []byte) string {
var build = strings.Builder{}
for _, d := range data {
build.WriteString(fmt.Sprintf("%v", d))
}
return build.String()
}
func (r *Radar) checkTail() bool {
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)
return r.Tail == byte(^sum+1)
}
func readHeader(buf *bytes.Buffer) (byte, byte, error) {
/*if buf.Len() < 2 {
return 0, 0, fmt.Errorf("雷达协议解析头部没有可读充足的数据")
}*/
d1, _ := buf.ReadByte()
d2, _ := buf.ReadByte()
if !(d1 == radar_head1 && d2 == radar_head2) {
return 0, 0, fmt.Errorf("雷达协议解析头部未找到对应的头部帧")
}
return d1, d2, nil
}
func readByteData(buf *bytes.Buffer) byte {
/* if buf.Len() < 1 {
return 0, fmt.Errorf("")
}*/
d, _ := buf.ReadByte()
return d
}
func readSpeedOrCounter(buf *bytes.Buffer) *RadarData {
/* if buf.Len() < 2 {
return nil, fmt.Errorf("")
}*/
ss, _ := buf.ReadByte()
limit, _ := buf.ReadByte()
return &RadarData{sourceData: ss, valRange: limit}
}
func readRadarInnerData(buf *bytes.Buffer) (byte, byte) {
/*if buf.Len() < 2 {
return 0, 0, fmt.Errorf("")
}*/
i1, _ := buf.ReadByte()
i2, _ := buf.ReadByte()
return i1, i2
}
func readRadarState(buf *bytes.Buffer) *RadarState {
/*if buf.Len() < 1 {
return nil, fmt.Errorf("")
}*/
state, _ := buf.ReadByte()
return &RadarState{State: state}
}
func driftCounter(buf *bytes.Buffer) (uint16, error) {
if buf.Len() < 2 {
return 0, fmt.Errorf("")
}
var driftCounter uint16
binary.Read(buf, binary.LittleEndian, &driftCounter)
return driftCounter, nil
}