实现应答器1023报文和830报文的编解码

example/balise_1023_830/main.go

@@ -0,0 +1,406 @@
+package main
+
+import (
+	"fmt"
+	"log/slog"
+	"strconv"
+
+	"joylink.club/bj-rtsts-server/third_party/balise"
+)
+
+type Transponder struct {
+	// 应答器编号
+	Code int
+	// 应答器名称
+	Name string
+	// 应答器类型
+	Type string
+	// 校验码
+	CheckSum string
+	// 830报文
+	Msg830 string
+	// 1023报文
+	Msg1023 string
+}
+
+func main() {
+	transponderMap := ReadTransponders()
+	// v := transponderMap["FB121_BGZ"]
+	// b1023 := convertToBalise1023(v.Msg1023)
+	// replaced830 := replaceFirst10Bits(convertTo830(v.Msg830))
+	// scrambled830 := scrambling(replaced830, b1023.S)
+	// compare830(scrambled830, b1023.data830)
+
+	// count := 0
+	for _, v := range transponderMap {
+		// slog.Info("transponder", "name", v.Name, "code", v.Code, "checksum", v.CheckSum, "msg830", v.Msg830, "msg1023", v.Msg1023)
+		byte104, err := balise.DecodeByteString(v.Msg1023)
+		if err != nil {
+			slog.Error("解码应答器数据失败", "name", v.Name, "code", v.Code, "err", err)
+			continue
+		}
+		compare104Bytes(byte104, balise.ConvertByteStringToBytes(v.Msg830))
+		// b1023 := convertToBalise1023(v.Msg1023)
+		// source830 := convertTo830(v.Msg830)
+		// // replaced830 := replaceFirst10Bits(source830)
+		// // compare830(reverted830, source830)
+		// descrambled830 := descrambling(b1023.data830, b1023.S)
+		// reverted830 := revertFirst10Bits(descrambled830)
+		// // // scrambled830 := scrambling(replaced830, b1023.S)
+		// compare830(source830, reverted830)
+		// count++
+		// if count >= 10 {
+		// 	break
+		// }
+	}
+
+}
+
+// 比较830位数据
+func compare104Bytes(bytes104 []byte, compare104 []byte) {
+	if len(bytes104) != 104 {
+		panic("invalid length")
+	}
+	for i := 0; i < 104; i++ {
+		fmt.Printf("%02x\n", bytes104[i])
+		fmt.Printf("%02x\n\n", compare104[i])
+		if bytes104[i] != compare104[i] {
+			slog.Info("error", "index", i, "bytes104", fmt.Sprintf("%02x", bytes104[i]), "compare", fmt.Sprintf("%02x", compare104[i]))
+			panic("104 bytes compare error")
+		}
+	}
+}
+
+type Balise1023 struct {
+	bits     []byte // 1023报文,1023bit
+	data     []byte // 数据位,913bit
+	data830  []byte // 830位数据
+	cb       []byte // 控制位,3bit
+	sb       []byte // 加扰位,12bit
+	S        uint32 // 由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+	esb      []byte // 额外修正位,10bit
+	checkSum []byte // 校验位,85bit
+}
+
+func newBalise1023(bits []byte) *Balise1023 {
+	if len(bits) != 1023 {
+		panic("invalid length")
+	}
+	// for i := 0; i < 1023; i++ {
+	// 	if i%10 == 0 {
+	// 		println()
+	// 	}
+	// 	print(1022-i, ":", bits[i], ",")
+	// }
+	// println()
+	balise1023 := &Balise1023{
+		bits: bits,
+	}
+	balise1023.data = balise1023.getRange(1022, 110)
+	if len(balise1023.data) != 913 {
+		panic("invalid data length")
+	}
+	balise1023.data830 = convert913To830(balise1023.data)
+	balise1023.check11To10()
+	balise1023.cb = balise1023.getRange(109, 107)
+	for i, v := range balise1023.cb {
+		n := 109 - i
+		name := "b" + strconv.Itoa(109-i)
+		slog.Info("cb", name, v)
+		if n == 109 && v == 1 {
+			slog.Error("控制位cb错误：cb109应该为0，实际为1")
+		} else if n == 108 && v == 1 {
+			slog.Error("控制位cb错误：cb108应该为0，实际为1")
+		} else if n == 107 && v == 0 {
+			slog.Error("控制位cb错误：cb107应该为1，实际为0")
+		}
+	}
+	balise1023.sb = balise1023.getRange(106, 95)
+	balise1023.S = calculateS(balise1023.sb)
+	balise1023.esb = balise1023.getRange(94, 85)
+	balise1023.checkSum = balise1023.getRange(84, 0)
+	slog.Info("msg length", "datalen", len(balise1023.data), "cblen", len(balise1023.cb), "sblen", len(balise1023.sb), "esblen", len(balise1023.esb), "checkSumlen", len(balise1023.checkSum))
+	return balise1023
+}
+
+func (b *Balise1023) getRange(start, end int) []byte {
+	if start < 0 || end < 0 || start < end || start > 1022 {
+		panic("invalid range")
+	}
+	return b.bits[1022-start : 1022-(end-1)]
+}
+
+func (b *Balise1023) check11To10() {
+	b913 := b.data
+	compare := convert830To913(b.data830)
+	for i := 0; i < 913; i++ {
+		if b913[i] != compare[i] {
+			slog.Info("error", "idx", i, "b913", b913[i], "compare", compare[i])
+			panic("10 to 11 bit error")
+		}
+	}
+}
+
+// 转换字节字符串到bit数组，左边为最高有效位（MSB）
+func convertStringBytesToBits(msg string) []byte {
+	length := len(msg)
+	println("msg:", msg)
+	bytes := make([]byte, length/2)
+	for i := 0; i < length; i += 2 {
+		v, err := strconv.ParseUint(msg[i:i+2], 16, 8)
+		if err != nil {
+			panic(err)
+		}
+		bytes[i/2] = byte(v)
+		// slog.Info("i", "byteidx", i/2, "byte", fmt.Sprintf("%02x", v))
+	}
+	// 字节转换为bit数组
+	bits := make([]byte, length/2*8)
+	for i, bt := range bytes {
+		for j := 0; j < 8; j++ {
+			move := 7 - j
+			idx := i*8 + j
+			bits[idx] = (bt >> move) & 1
+		}
+	}
+	return bits
+}
+
+func convertTo830(msg string) []byte {
+	length := len(msg)
+	if length != 208 {
+		panic("invalid length")
+	}
+	// 字节转换为bit数组
+	bits := convertStringBytesToBits(msg)
+	bits830 := bits[0:830]
+	return bits830
+}
+
+func convertToBalise1023(msg string) *Balise1023 {
+	length := len(msg)
+	if length != 256 {
+		panic("invalid length")
+	}
+	// 字节转换为bit数组
+	bits := convertStringBytesToBits(msg)
+	bits1023 := bits[0:1023]
+	slog.Info("bits length", "len", len(bits1023))
+	return newBalise1023(bits1023)
+}
+
+// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组，除了第一个10位值，其余值求和，然后循环2的10次方次与其他值求和结果相加后模2的10次方，若结果和第一个10位值相同，则结束，此值即为原始的第一个10位值，将此值替换为第一个10位二进制数组，依然是左边为MSB
+func revertFirst10Bits(b []byte) []byte {
+	if len(b) != 830 {
+		panic("invalid length")
+	}
+	// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组
+	bits := make([]uint16, 83)
+	for i := 0; i < 83; i++ {
+		bits[i] = uint16(balise.ToValLeftMsb(b[i*10 : i*10+10]))
+		// 打印输出
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b[i*10+j])
+		}
+		print(" ")
+		if i != 0 && i%10 == 9 {
+			println()
+		}
+	}
+	println()
+	// 将除了第一个10位字整数求和
+	sum := uint64(0)
+	for i := 1; i < 83; i++ {
+		sum += uint64(bits[i])
+	}
+	// 循环2的10次方次与其他值求和结果相加后模2的10次方
+	for i := 0; i < 1024; i++ {
+		test := sum + uint64(i)
+		if test%1024 == uint64(bits[0]) {
+			bits[0] = uint16(i)
+			break
+		}
+	}
+	slog.Info("还原第一个10位值", "sum", sum, "bits[0]", bits[0], "bits[0]b", fmt.Sprintf("%010b", bits[0]))
+	rbits := make([]byte, 830)
+	// 将整个10位数组转换为二进制数组，依然是MSB
+	u0bits := balise.ToBitsLeftMsb(int(bits[0]), 10)
+	for i := 0; i < 10; i++ {
+		rbits[i] = u0bits[i]
+	}
+	for i := 10; i < 830; i++ {
+		rbits[i] = b[i]
+	}
+	// compare830(b, rbits)
+	return rbits
+}
+
+// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组，然后求和后模2的10次方，得到的结果覆盖第一个10位值，然后将整个10位数组转换为二进制数组，依然是左边为MSB
+func replaceFirst10Bits(b []byte) []byte {
+	if len(b) != 830 {
+		panic("invalid length")
+	}
+	// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组
+	bits := make([]uint16, 83)
+	for i := 0; i < 83; i++ {
+		bits[i] = uint16(balise.ToValLeftMsb(b[i*10 : i*10+10]))
+		// 打印输出
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b[i*10+j])
+		}
+		print(" ")
+		if i != 0 && i%10 == 9 {
+			println()
+		}
+	}
+	println()
+	// 将每一个10位字整数求和后模2的10次方，得到的结果覆盖第一个10位值
+	sum := uint64(0)
+	for i := 0; i < 83; i++ {
+		sum += uint64(bits[i])
+		// fmt.Printf("i=%d, v10=%d, v10b=%010b\n", i, bits[i], bits[i])
+	}
+	bits[0] = uint16(sum % 1024)
+	slog.Info("替换第一个10位值", "sum", sum, "bits[0]", bits[0], "bits[0]b", fmt.Sprintf("%010b", bits[0]))
+	rbits := make([]byte, 830)
+	// 将整个10位数组转换为二进制数组，依然是MSB
+	u0bits := balise.ToBitsLeftMsb(int(bits[0]), 10)
+	for i := 0; i < 10; i++ {
+		rbits[i] = u0bits[i]
+	}
+	for i := 10; i < 830; i++ {
+		rbits[i] = b[i]
+	}
+	// compare830(b, rbits)
+	return rbits
+}
+
+// 由加扰位计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+func calculateS(sb []byte) uint32 {
+	// 由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+	if len(sb) != 12 {
+		panic("invalid length")
+	}
+	B := balise.ToValLeftMsb(sb)
+	const A uint64 = 2801775573
+	S := uint32((A * uint64(B)) % (1 << 32))
+	slog.Info("由12位加扰位计算得到整数S", "B", B, "S", S, "Sb", fmt.Sprintf("%032b", S))
+	return S
+}
+
+// 由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+// 1. 生成一个32位的线性反馈移位寄存器，其初始状态为S（左边为MSB）
+// 2. 系数h31,h30,h29,h27,h25和h0等于1(表示连接)，所有其他系数都为0（表示不连接）
+// 3. 然后电路被时钟驱动m-1次，其中m是数据位的数量，同时输入dn的每一位dn(m-1),dn(m-2),...,dn(0),便生成加扰后的码位（在第一个时钟之前读取第一个输出out(m-1)）
+// 4. 生成的加扰码位是dn的每一位与S的最高位的异或值
+// 5. 生成的加扰码位会根据系数进行异或反馈回S的最低位
+// 几种可能性：
+func scrambling(dn []byte, S uint32) []byte {
+	if len(dn) != 830 {
+		panic("invalid length")
+	}
+	// const Polynomial = 0x000000AF
+	out := make([]byte, len(dn))
+	t := S // 寄存器初始值
+	for i := 0; i < len(dn); i++ {
+		msb := (t >> 31) & 1
+		out[i] = (dn[i] ^ byte(msb)) & 1
+		// fmt.Printf("i=%d, t=%032b, msb=%d, dn=%d, out=%d\n", i, t, msb, dn[i], out[i])
+		xor := uint32(out[i])
+		t = (xor << 30) ^ (xor << 29) ^ (xor << 28) ^ (xor << 26) ^ (xor << 24) ^ t
+		t = (t << 1) | xor
+	}
+	return out
+}
+
+func descrambling(dn []byte, S uint32) []byte {
+	if len(dn) != 830 {
+		panic("invalid length")
+	}
+	// const Polynomial = 0x000000AF
+	out := make([]byte, len(dn))
+	t := S // 寄存器初始值
+	for i := 0; i < len(dn); i++ {
+		msb := (t >> 31) & 1
+		out[i] = (dn[i] ^ byte(msb)) & 1
+		// fmt.Printf("i=%d, t=%032b, msb=%d, dn=%d, out=%d\n", i, t, msb, dn[i], out[i])
+		xor := uint32(dn[i])
+		t = (xor << 30) ^ (xor << 29) ^ (xor << 28) ^ (xor << 26) ^ (xor << 24) ^ t
+		t = (t << 1) | xor
+	}
+	return out
+}
+
+// 将830位的二进制数组先以10位为一组分别转换为11位并组合
+func convert830To913(b830 []byte) []byte {
+	if len(b830) != 830 {
+		panic("invalid length")
+	}
+	b913 := make([]byte, 913)
+	for i := 0; i < 83; i++ {
+		b11 := balise.To11(b830[i*10 : i*10+10])
+		for j := 0; j < 11; j++ {
+			b913[i*11+j] = b11[j]
+		}
+	}
+	return b913
+}
+
+func convert913To830(b913 []byte) []byte {
+	if len(b913) != 913 {
+		panic("invalid length")
+	}
+	b830 := make([]byte, 830)
+	for i := 0; i < 83; i++ {
+		b10, err := balise.From11(b913[i*11 : i*11+11])
+		if err != nil {
+			panic(err)
+		}
+		for j := 0; j < 10; j++ {
+			b830[i*10+j] = b10[j]
+		}
+	}
+	return b830
+}
+
+func compare830(b830 []byte, compare830 []byte) {
+	if len(b830) != 830 {
+		panic("invalid length")
+	}
+	for i := 0; i < 83; i++ {
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b830[i*10+j])
+		}
+		println()
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", compare830[i*10+j])
+		}
+		println()
+		println()
+	}
+	for i := 0; i < 830; i++ {
+		if b830[i] != compare830[i] {
+			slog.Info("error", "index", i, "b830", b830[i], "compare", compare830[i])
+			panic("830 bit compare error")
+		}
+	}
+}
+
+// 以11位为一组比较两个913位的报文
+func compare913(b913 []byte, b1023 *Balise1023) {
+	if len(b913) != 913 {
+		panic("invalid length")
+	}
+	compare := b1023.data
+	for i := 0; i < 913; i += 11 {
+		for j := 0; j < 11; j++ {
+			print(b913[i+j])
+		}
+		println()
+		for j := 0; j < 11; j++ {
+			print(compare[i+j])
+		}
+		println()
+		println()
+	}
+}

example/balise_1023_830/read_excel.go

@@ -0,0 +1,156 @@
+package main
+
+import (
+	"log/slog"
+	"runtime/debug"
+	"strconv"
+	"strings"
+
+	"github.com/xuri/excelize/v2"
+)
+
+const (
+	fileName         = "北岗子-应答器报文清单.xlsx"
+	sheetName        = "应答器报文清单"
+	codeColumn       = "应答器编号"
+	nameColumn       = "应答器名称"
+	typeColumn       = "类型"
+	checkSumColumn   = "校验码"
+	msg830strColumn  = "用户报文（830bits）"
+	msg1023strColumn = "报文（1023bits）"
+)
+
+var heads []string
+
+func init() {
+	initHeads()
+}
+
+func initHeads() {
+	heads = append(heads, codeColumn)
+	heads = append(heads, nameColumn)
+	heads = append(heads, typeColumn)
+	heads = append(heads, checkSumColumn)
+	heads = append(heads, msg830strColumn)
+	heads = append(heads, msg1023strColumn)
+}
+
+func buildHeadIndex(row []string) map[string]int {
+	headIdx := make(map[string]int)
+	for i, column := range row {
+		column = HandleStringSpace(column)
+		if column == codeColumn {
+			headIdx[column] = i
+		} else if column == nameColumn {
+			headIdx[column] = i
+		} else if column == typeColumn {
+			headIdx[column] = i
+		} else if column == checkSumColumn {
+			headIdx[column] = i
+		} else if column == msg830strColumn {
+			headIdx[column] = i
+		} else if column == msg1023strColumn {
+			headIdx[column] = i
+		}
+	}
+	// 检查headIndex是否完整
+	if len(headIdx) <= 0 {
+		return nil
+	}
+	checkHeadsIndex(headIdx, fileName, sheetName, heads)
+	return headIdx
+}
+
+func checkHeadsIndex(headIdx map[string]int, fileName, sheetName string, heads []string) {
+	// 检查headIndex是否完整
+	for _, v := range heads {
+		if _, ok := headIdx[v]; !ok {
+			slog.Error("表头缺失", "文件名", fileName, "SheetName", sheetName, "表头", v)
+			panic("课时表头缺失")
+		}
+	}
+}
+
+func ReadTransponders() map[string]Transponder {
+	return readExcel(fileName, sheetName, readRows)
+}
+
+func readExcel[T any](fileName, sheetName string, handle func(rows [][]string) map[string]T) map[string]T {
+	f, err := excelize.OpenFile(fileName)
+	if err != nil {
+		slog.Error("打开表文件异常", "表名", fileName, "error", err)
+		debug.PrintStack()
+		panic("打开表文件异常")
+	}
+	defer func() {
+		if err := f.Close(); err != nil {
+			slog.Error("文件关闭异常", "error", err)
+		}
+	}()
+
+	rows, err := f.GetRows(sheetName)
+	if err != nil {
+		slog.Error("读取Sheet异常", "SheetName", sheetName, "error", err)
+		panic(err)
+	}
+	// fmt.Println(rows)
+	return handle(rows)
+}
+
+func readRows(rows [][]string) map[string]Transponder {
+	dataMap := make(map[string]Transponder)
+	var headIdx map[string]int
+	for _, row := range rows {
+		if headIdx == nil {
+			headIdx = buildHeadIndex(row)
+			// if headIdx != nil {
+			// 	slog.Info("读取到表头索引", "文件名", fileName, "表名", sheetName, "索引", headIdx)
+			// }
+		} else {
+			rowSize := len(row)
+			if rowSize <= 0 {
+				continue
+			}
+			if rowSize <= headIdx[msg1023strColumn] {
+				// slog.Info("非数据行", "row", row, "rowIndex", i)
+				continue
+			}
+			codeStr := row[headIdx[codeColumn]]
+			if codeStr == "" {
+				continue
+			}
+			codeStr = HandleStringSpace(codeStr)
+			code, err := strconv.ParseInt(codeStr, 10, 32)
+			if err != nil {
+				slog.Error("应答器编号错误", "编号", codeStr, "error", err)
+				panic("应答器编号错误")
+			}
+			name := row[headIdx[nameColumn]]
+			if name == "" {
+				continue
+			}
+			name = HandleStringSpace(name)
+			tp := row[headIdx[typeColumn]]
+			checkSum := row[headIdx[checkSumColumn]]
+			msg830 := row[headIdx[msg830strColumn]]
+			msg1023 := row[headIdx[msg1023strColumn]]
+			dataMap[name] = Transponder{
+				Code:     int(code),
+				Name:     name,
+				Type:     tp,
+				CheckSum: checkSum,
+				Msg830:   msg830,
+				Msg1023:  msg1023,
+			}
+		}
+	}
+	slog.Info("读取结果", "文件名", fileName, "SheetName", sheetName, "总数", len(dataMap))
+	// fmt.Println(dataMap)
+	return dataMap
+}
+
+func HandleStringSpace(s string) string {
+	s = strings.ReplaceAll(s, " ", "")
+	s = strings.ReplaceAll(s, "\n", "")
+	return s
+}

example/ex1/main.go

@@ -0,0 +1,32 @@
+package main
+
+import "log/slog"
+
+func main() {
+	a1 := calculateAvgAcc(136960.88, 24.41978)
+	a2 := calculateAvgAcc(34874, 14.97515)
+	slog.Info("根据位移和时间计算平均加速度", "通号平均加速度", a1, "动力学平均加速度", a2)
+	avt1 := calculateAvgAccByV(6.94444, 24.41978)
+	avt2 := calculateAvgAccByV(6.94444, 14.97515)
+	slog.Info("根据速度和时间计算平均加速度", "通号平均加速度", avt1, "动力学平均加速度", avt2)
+	s1 := calculateS(0.28437766432762146, 24.41978)
+	s2 := calculateS(0.46373090147972107, 14.97515)
+	slog.Info("根据加速度和时间计算位移", "通号最小位移", s1, "动力学最小位移", s2)
+	slog.Info("实际位移", "通号实际位移差", 136960.88-s1, "动力学实际位移差", 34874-s2)
+}
+
+// 根据位移和时间计算平均加速度（初始速度为0）
+// s单位为mm，t单位为s
+func calculateAvgAcc(s float32, t float32) float32 {
+	return 2 * s / (t * t) / 1000
+}
+
+// 根据速度和时间计算平均加速度(初始速度为0)
+func calculateAvgAccByV(v float32, t float32) float32 {
+	return v / t
+}
+
+// 根据加速度和时间计算位移（初始速度为0）
+func calculateS(a float32, t float32) float32 {
+	return 0.5 * a * t * t * 1000
+}

example/lfsr/main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+	"log/slog"
+)
+
+func main() {
+	// fib_lfsr()
+	galois_lfsr()
+}
+
+/* taps: 16 14 13 11; feedback polynomial: x^16 + x^14 + x^13 + x^11 + 1 */
+func fib_lfsr() {
+	startState := uint16(0xACE1)
+	lfsr := startState
+	var bit uint16
+	period := uint64(0)
+	for {
+		slog.Info("fib_lfsr", "bit", fmt.Sprintf("%01b", lfsr&1), "lfsr", fmt.Sprintf("%016b", lfsr))
+		bit = ((lfsr >> 0) ^ (lfsr >> 2) ^ (lfsr >> 3) ^ (lfsr >> 5)) & 1
+		lfsr = (lfsr >> 1) | (bit << 15)
+		period++
+		if period == 15 {
+			break
+		}
+		if lfsr == startState {
+			break
+		}
+	}
+	println(period)
+}
+
+/* taps: 16 14 13 11; feedback polynomial: x^16 + x^14 + x^13 + x^11 + 1 */
+func galois_lfsr() {
+	startState := uint16(0xACE1)
+	lfsr := startState
+	var bit uint16
+	period := uint64(0)
+	for {
+		slog.Info("galois_lfsr", "bit", fmt.Sprintf("%01b", lfsr&1), "lfsr", fmt.Sprintf("%016b", lfsr))
+		bit = lfsr & 1
+		lfsr >>= 1
+		if bit == 1 {
+			lfsr ^= 0xB400
+		}
+		period++
+		// if period == 15 {
+		// 	break
+		// }
+		if lfsr == startState {
+			break
+		}
+	}
+	println(period)
+}

example/test/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func main() {
+	d2, d1, d0 := encodeAcc(6.742071875)
+	a := decode2Acc(d2, d1, d0)
+	fmt.Println(a)
+}
+
+const G = 9.80665
+
+func encodeAcc(a float32) (d2, d1, d0 byte) {
+	d2 = 0
+	d1 = 0
+	d0 = 0
+	x := a / G
+	v := uint32(0)
+	for i := 17; i >= 0; i-- {
+		t := float32(1.0 / math.Pow(2, float64(17-i)))
+		if t > x {
+			continue
+		} else {
+			v |= 1 << i
+			x -= t
+		}
+	}
+	fmt.Printf("%b, %b\n", v, v<<6)
+	v <<= 6
+	d0 = byte(v)
+	d1 = byte(v >> 8)
+	d2 = byte(v >> 16)
+	fmt.Printf("%b, %b, %b\n", d2, d1, d0)
+	return
+}
+
+func decode2Acc(d2, d1, d0 byte) float32 {
+	v := uint32(d2)<<10 | uint32(d1)<<2 | uint32(d0>>6)
+	fmt.Printf("%b\n", v)
+	x := float32(0)
+	for i := 17; i >= 0; i-- {
+		if v&(1<<i) != 0 {
+			t := float32(1.0 / math.Pow(2, float64(17-i)))
+			x += t
+		}
+	}
+	fmt.Println(x)
+	return x * G
+}

go.mod

@@ -46,10 +46,16 @@ require (
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/richardlehane/mscfb v1.0.4 // indirect
+	github.com/richardlehane/msoleps v1.0.3 // indirect
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
 	github.com/simonvetter/modbus v1.6.0 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53 // indirect
+	github.com/xuri/excelize/v2 v2.8.1 // indirect
+	github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05 // indirect
 	github.com/yohamta/donburi v1.3.9 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.9.0 // indirect

go.sum

@@ -153,6 +153,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 h1:RWengNIwukTxcDr9M+97sNutRR1RKhG96O6jWumTTnw=
+github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
 github.com/natefinch/lumberjack v2.0.0+incompatible h1:4QJd3OLAMgj7ph+yZTuX13Ld4UpgHp07nNdFX7mqFfM=
 github.com/natefinch/lumberjack v2.0.0+incompatible/go.mod h1:Wi9p2TTF5DG5oU+6YfsmYQpsTIOm0B1VNzQg9Mw6nPk=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
@@ -164,6 +166,11 @@ github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsK
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/richardlehane/mscfb v1.0.4 h1:WULscsljNPConisD5hR0+OyZjwK46Pfyr6mPu5ZawpM=
+github.com/richardlehane/mscfb v1.0.4/go.mod h1:YzVpcZg9czvAuhk9T+a3avCpcFPMUWm7gK3DypaEsUk=
+github.com/richardlehane/msoleps v1.0.1/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
+github.com/richardlehane/msoleps v1.0.3 h1:aznSZzrwYRl3rLKRT3gUk9am7T/mLNSnJINvN0AQoVM=
+github.com/richardlehane/msoleps v1.0.3/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
@@ -220,6 +227,12 @@ github.com/ugorji/go v1.2.7/go.mod h1:nF9osbDWLy6bDVv/Rtoh6QgnvNDpmCalQV5urGCCS6
 github.com/ugorji/go/codec v1.2.7/go.mod h1:WGN1fab3R1fzQlVQTkfxVtIBhWDRqOviHU95kRgeqEY=
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
 github.com/ugorji/go/codec v1.2.11/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
+github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53 h1:Chd9DkqERQQuHpXjR/HSV1jLZA6uaoiwwH3vSuF3IW0=
+github.com/xuri/efp v0.0.0-20231025114914-d1ff6096ae53/go.mod h1:ybY/Jr0T0GTCnYjKqmdwxyxn2BQf2RcQIIvex5QldPI=
+github.com/xuri/excelize/v2 v2.8.1 h1:pZLMEwK8ep+CLIUWpWmvW8IWE/yxqG0I1xcN6cVMGuQ=
+github.com/xuri/excelize/v2 v2.8.1/go.mod h1:oli1E4C3Pa5RXg1TBXn4ENCXDV5JUMlBluUhG7c+CEE=
+github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05 h1:qhbILQo1K3mphbwKh1vNm4oGezE1eF9fQWmNiIpSfI4=
+github.com/xuri/nfp v0.0.0-20230919160717-d98342af3f05/go.mod h1:WwHg+CVyzlv/TX9xqBFXEZAuxOPxn2k1GNHwG41IIUQ=
 github.com/yohamta/donburi v1.3.9 h1:sYAPaelSnxmoTGjgH9ZlYt4pUKrnwvAv4YGXxLZCK6E=
 github.com/yohamta/donburi v1.3.9/go.mod h1:5QkyraUjkzbMVTD2b8jaPFy1Uwjm/zdFN1c1lZGaezg=
 github.com/yousifnimah/Cryptx v1.0.1 h1:oZbB6CjvqOzkmoghsncb3/4sV2As8nqOJCjZPd08Xdw=

go.work.sum

@@ -266,6 +266,7 @@ go.uber.org/zap v1.21.0 h1:WefMeulhovoZ2sYXz7st6K0sLj7bBhpiFaud4r4zST8=
 go.uber.org/zap v1.21.0/go.mod h1:wjWOCqI0f2ZZrJF/UufIOkiC8ii6tm1iqIsLo76RfJw=
 golang.org/x/image v0.1.0 h1:r8Oj8ZA2Xy12/b5KZYj3tuv7NG/fBz3TwQVvpJ9l8Rk=
 golang.org/x/image v0.1.0/go.mod h1:iyPr49SD/G/TBxYVB/9RRtGUT5eNbo2u4NamWeQcD5c=
+golang.org/x/image v0.14.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
 golang.org/x/mobile v0.0.0-20221012134814-c746ac228303 h1:K4fp1rDuJBz0FCPAWzIJwnzwNEM7S6yobdZzMrZ/Zws=
 golang.org/x/mobile v0.0.0-20221012134814-c746ac228303/go.mod h1:M32cGdzp91A8Ex9qQtyZinr19EYxzkFqDjW2oyHzTDQ=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=

rts-sim-module

@@ -1 +1 @@
-Subproject commit 5f95106870ba0cc1e75766698c3dbee74c45b39f
+Subproject commit 8c6bfb2aeec50afc347b6276b9f8012072811b7e

rts-sim-testing-message

@@ -1 +1 @@
-Subproject commit b7bddc6226c642e35a5ff8bb69d7990390d67b8d
+Subproject commit 0c2a7613104f859e83091d1f6379e6e2fa1990ad

third_party/balise/codec.go

@@ -1,6 +1,10 @@
 package balise
 
-import "fmt"
+import (
+	"fmt"
+	"log/slog"
+	"strconv"
+)
 
 // 应答器数据编解码器
 type Codec interface {
@@ -8,22 +12,172 @@ type Codec interface {
 
 const (
 	Bytes1023 = 128
-	Bytes341  = 43
 )
 
-// 解码应答器数据,1023/341位解码
+func Decode(byte128 []byte) ([]byte, error) {
-// bys - 128/43字节数据
+	if len(byte128) != Bytes1023 {
-// return - 830/210位数据
+		return nil, buildError("应答器报文长度错误, 期望长度为128字节")
-func Decode(bys []byte) ([]int, error) {
+	}
-	size := len(bys)
+	bits1023 := convertTo1023Bits(byte128)
+	// 检查控制位
+	err := checkCb(bits1023)
+	if err != nil {
+		return nil, err
+	}
+	// 检查913位数据，并将913位数据转换为830位数据
+	data913 := getRange(bits1023, 1022, 110)
+	scrambled830, err := convert913To830(data913)
+	if err != nil {
+		return nil, err
+	}
+	// 根据加扰位计算得到加扰器初始值S
+	S := calculateS(getRange(bits1023, 106, 95))
+	// 解扰
+	descrambled830 := descrambling(scrambled830, S)
+	// 还原第一个10位值
+	reverted830 := revertFirst10Bits(descrambled830)
+	// 转换为左边为最高有效位（MSB）的字节数组
+	byte104 := toBytes(reverted830)
+	return byte104, nil
+}
 
-	if size == Bytes1023 {
+// 解码应答器数据,1023/341位解码
-		// 1023应答器解码
+// msg - 128字节数据
-		return nil, nil
+// return - 830/210位数据
-	} else if size == Bytes341 {
+func DecodeByteString(msg string) ([]byte, error) {
-		// 341应答器解码
+	length := len(msg)
-		return nil, nil
+	if length != 256 {
-	} else {
+		panic("invalid length")
-		return nil, fmt.Errorf("不支持的应答器类型")
+	}
+	// 字节转换为字节数组
+	slog.Debug("待解码的1023应答器报文", "msg", msg)
+	bytes := ConvertByteStringToBytes(msg)
+	return Decode(bytes)
+}
+
+// 转换字节（16进制）字符串为字节数组
+func ConvertByteStringToBytes(msg string) []byte {
+	length := len(msg)
+	bytes := make([]byte, length/2)
+	for i := 0; i < length; i += 2 {
+		v, err := strconv.ParseUint(msg[i:i+2], 16, 8)
+		if err != nil {
+			panic(err)
+		}
+		bytes[i/2] = byte(v)
+		// slog.Info("i", "byteidx", i/2, "byte", fmt.Sprintf("%02x", v))
+	}
+	return bytes
+}
+
+// 将830位补末尾补1到832位，然后转换为左边为最高有效位（MSB）的字节数组
+func toBytes(reverted830 []byte) []byte {
+	reverted830 = append(reverted830, 1, 1)
+	byte104 := make([]byte, 104)
+	for i := 0; i < 104; i++ {
+		byte104[i] = byte(ToValLeftMsb(reverted830[i*8 : i*8+8]))
+	}
+	return byte104
+}
+
+func buildError(msg string) error {
+	return fmt.Errorf("应答器1023解码错误：%s", msg)
+}
+
+// 检查控制位
+func checkCb(bits1023 []byte) error {
+	cb := getRange(bits1023, 109, 107)
+	for i, v := range cb {
+		n := 109 - i
+		name := "b" + strconv.Itoa(109-i)
+		slog.Info("cb", name, v)
+		if n == 109 && v == 1 {
+			return buildError("控制位cb错误，b109应该为0，实际为1")
+		} else if n == 108 && v == 1 {
+			return buildError("控制位cb错误，b108应该为0，实际为1")
+		} else if n == 107 && v == 0 {
+			return buildError("控制位cb错误，b107应该为1，实际为0")
+		}
+	}
+	return nil
+}
+
+func getRange(bits []byte, start, end int) []byte {
+	if start < 0 || end < 0 || start < end || start > 1022 {
+		panic("invalid range")
+	}
+	return bits[1022-start : 1022-(end-1)]
+}
+
+// 转换128字节数据为1023位数据
+func convertTo1023Bits(byte128 []byte) []byte {
+	if len(byte128) != 128 {
+		panic("invalid length")
+	}
+	// 字节转换为bit数组
+	bits := make([]byte, 1024)
+	for i, bt := range byte128 {
+		for j := 0; j < 8; j++ {
+			move := 7 - j
+			idx := i*8 + j
+			bits[idx] = (bt >> move) & 1
+		}
+	}
+	bits1023 := bits[0:1023]
+	return bits1023
+}
+
+// 由加扰位计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+func calculateS(sb []byte) uint32 {
+	// 由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+	if len(sb) != 12 {
+		panic("invalid length")
+	}
+	B := ToValLeftMsb(sb)
+	const A uint64 = 2801775573
+	S := uint32((A * uint64(B)) % (1 << 32))
+	slog.Info("由12位加扰位计算得到整数S", "B", B, "S", S, "Sb", fmt.Sprintf("%032b", S))
+	return S
+}
+
+// 以11位为一组比较两个913位的报文
+func compare913(b913 []byte, compare []byte) {
+	if len(b913) != 913 {
+		panic("invalid length")
+	}
+	for i := 0; i < 913; i += 11 {
+		for j := 0; j < 11; j++ {
+			print(b913[i+j])
+		}
+		println()
+		for j := 0; j < 11; j++ {
+			print(compare[i+j])
+		}
+		println()
+		println()
+	}
+}
+
+// 比较830位数据
+func compare830(b830 []byte, compare830 []byte) {
+	if len(b830) != 830 {
+		panic("invalid length")
+	}
+	for i := 0; i < 83; i++ {
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b830[i*10+j])
+		}
+		println()
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", compare830[i*10+j])
+		}
+		println()
+		println()
+	}
+	for i := 0; i < 830; i++ {
+		if b830[i] != compare830[i] {
+			slog.Info("error", "index", i, "b830", b830[i], "compare", compare830[i])
+			panic("830 bit compare error")
+		}
 	}
 }

third_party/balise/conv.go

@@ -113,14 +113,83 @@ var ConvWords = []uint16{
 var convWordMap = make(map[uint16]int, 1024)
 
 func init() {
+	if len(ConvWords) != 1024 {
+		panic(fmt.Errorf("ConvWords长度不是1024, len=%d", len(ConvWords)))
+	}
+	// 检查，前512个字的累加和为267528，所有1024个字的累加和为1048064
+	sum1 := 0
+	sum2 := 0
+	for i := 0; i < 1024; i++ {
+		if i < 512 {
+			sum1 += int(ConvWords[i])
+		}
+		sum2 += int(ConvWords[i])
+	}
+	if sum1 != 267528 {
+		panic(fmt.Errorf("前512个字的累加和不是267528, sum1=%d", sum1))
+	}
+	if sum2 != 1048064 {
+		panic(fmt.Errorf("所有1024个字的累加和不是1048064, sum2=%d", sum2))
+	}
+	// 检查，后一个字比前一个字大
+	for i := 1; i < 1024; i++ {
+		if ConvWords[i] <= ConvWords[i-1] {
+			panic(fmt.Errorf("第%d个字比第%d个字小, %04o <= %04o", i, i-1, ConvWords[i], ConvWords[i-1]))
+		}
+	}
 	for i, v := range ConvWords {
 		convWordMap[v] = i
+		fmt.Printf("%04o: %d\n", v, i)
+		// slog.Info("构建10位到11位转换置换字", "i", i, "v", v)
 	}
+	// 检查：翻转有效字的所有位能形成另一个有效字
+	for _, v := range ConvWords {
+		rv := revertBits(v)
+		_, ok := convWordMap[rv]
+		if !ok {
+			panic(fmt.Errorf("构建10位到11位转换置换字失败, v=%04o, rv=%04o", v, rv))
+		}
+	}
+}
+
+// 翻转11位bit数组
+func revertBits(word uint16) uint16 {
+	bits11 := ToBitsLeftMsb(int(word), 11)
+	revert := make([]byte, 11)
+	for i := 0; i < 11; i++ {
+		if bits11[i] == 1 {
+			revert[i] = 0
+		} else {
+			revert[i] = 1
+		}
+	}
+	rw := ToValLeftMsb(revert)
+	// slog.Info("反转11位bit数组", "word", fmt.Sprintf("%04o", word), "bits11", bits11, "revert", revert, "revertWord", fmt.Sprintf("%04o", rw))
+	return rw
 }
 
 // bit数组转换为数字,左边为最高有效位
 // v - 0/1数组,数组的每个值都只能是0或1
-func ToVal(v []int) uint16 {
+func ToValLeftMsb(v []byte) uint16 {
+	if len(v) > 15 {
+		panic(fmt.Errorf("不支持15位以上"))
+	}
+	val := uint16(0)
+	l := len(v)
+	elems := make([]string, l)
+	for i := 0; i < l; i++ {
+		elems[i] = fmt.Sprintf("%d", v[i])
+		if v[i] == 1 {
+			val += (1 << (l - i - 1))
+		}
+	}
+	// slog.Info("ToValLeftMsb", "len", l, "v", strings.Join(elems, ""), "val", fmt.Sprintf("%04o", val))
+	return val
+}
+
+// bit数组转换为数字,右边为最高有效位
+// v - 0/1数组,数组的每个值都只能是0或1
+func ToValRightMsb(v []byte) uint16 {
 	if len(v) > 15 {
 		panic(fmt.Errorf("不支持15位以上"))
 	}
@@ -128,15 +197,15 @@ func ToVal(v []int) uint16 {
 	l := len(v)
 	for i := 0; i < l; i++ {
 		if v[i] == 1 {
-			val += (1 << (l - i - 1))
+			val += (1 << i)
 		}
 	}
 	return val
 }
 
 // 数字转换为bit数组,左边为最高有效位
-func ToBits(val int, count int) []int {
+func ToBitsLeftMsb(val int, count int) []byte {
-	bs := make([]int, count)
+	bs := make([]byte, count)
 	for i := 0; i < count; i++ {
 		tmp := 1 << (count - 1 - i)
 		if (val & (tmp)) == (tmp) {
@@ -148,26 +217,42 @@ func ToBits(val int, count int) []int {
 	return bs
 }
 
+// 数字转换为bit数组,右边为最高有效位
+func ToBitsRightMsb(val int, count int) []byte {
+	bs := make([]byte, count)
+	for i := 0; i < count; i++ {
+		tmp := 1 << i
+		if (val & (tmp)) == (tmp) {
+			bs[i] = 1
+		} else {
+			bs[i] = 0
+		}
+	}
+	return bs
+}
+
 // 11位字转换回10位字
-func From11(b11 []int) ([]int, error) {
+func From11(b11 []byte) ([]byte, error) {
-	v11 := ToVal(b11)
+	v11 := ToValLeftMsb(b11)
-	v10, ok := convWordMap[uint16(v11)]
+	v10, ok := convWordMap[v11]
+	// slog.Info("11位字转换回10位字", "v11", fmt.Sprintf("%04o", v11), "v11b", fmt.Sprintf("%011b", v11), "v10", v10, "ok", ok, "v10bits", fmt.Sprintf("%010b", v10), "to10Bits", ToBitsLeftMsb(v10, 10))
 	if ok {
-		return ToBits(v10, 10), nil
+		return ToBitsLeftMsb(v10, 10), nil
 	} else {
-		return nil, fmt.Errorf("错误的11位字")
+		return nil, fmt.Errorf("错误的11位字，word11=%04o", v11)
 	}
 }
 
 // 10位字转换为11位字
-func To11(b10 []int) []int {
+func To11(b10 []byte) []byte {
 	if len(b10) != 10 {
 		panic(fmt.Errorf("应答器编码10位字转换为11位字参数异常: 位数不是10, len=%d", len(b10)))
 	}
-	v10 := ToVal(b10)
+	v10 := ToValLeftMsb(b10)
 	if v10 > 1023 {
 		panic(fmt.Errorf("应答器编码10位字转换为11位字参数异常: 10位字转为整数不能大于1023, v10=%d", v10))
 	}
 	v11 := ConvWords[v10]
-	return ToBits(int(v11), 11)
+	// slog.Info("10位字转换为11位字", "v10", v10, "v10b", fmt.Sprintf("%010b", v10), "v11", fmt.Sprintf("%04o", v11), "v11bits", fmt.Sprintf("%011b", v11), "to11Bits", ToBitsLeftMsb(int(v11), 11))
+	return ToBitsLeftMsb(int(v11), 11)
 }

third_party/balise/conv_test.go

@@ -39,6 +39,6 @@ func TestConvList(t *testing.T) {
 }
 
 func TestTo11(t *testing.T) {
-	b10 := []int{0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
+	b10 := []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
 	balise.To11(b10)
 }

third_party/balise/decode.go

@@ -0,0 +1,88 @@
+package balise
+
+import (
+	"fmt"
+	"log/slog"
+)
+
+// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组，除了第一个10位值，其余值求和，然后循环2的10次方次与其他值求和结果相加后模2的10次方，若结果和第一个10位值相同，则结束，此值即为原始的第一个10位值，将此值替换为第一个10位二进制数组，依然是左边为MSB
+func revertFirst10Bits(b []byte) []byte {
+	if len(b) != 830 {
+		panic("invalid length")
+	}
+	// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组
+	w10s := make([]uint16, 83)
+	for i := 0; i < 83; i++ {
+		w10s[i] = uint16(ToValLeftMsb(b[i*10 : i*10+10]))
+		// 打印输出
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b[i*10+j])
+		}
+		print(" ")
+		if i != 0 && i%10 == 9 {
+			println()
+		}
+	}
+	println()
+	// 将除了第一个10位字整数求和
+	sum := uint64(0)
+	for i := 1; i < 83; i++ {
+		sum += uint64(w10s[i])
+	}
+	// 循环2的10次方次与其他值求和结果相加后模2的10次方
+	for i := 0; i < 1024; i++ {
+		test := sum + uint64(i)
+		if test%1024 == uint64(w10s[0]) {
+			w10s[0] = uint16(i)
+			break
+		}
+	}
+	slog.Info("还原第一个10位值", "sum", sum, "bits[0]", w10s[0], "bits[0]b", fmt.Sprintf("%010b", w10s[0]))
+	bits := make([]byte, 830)
+	// 将整个10位数组转换为二进制数组，依然是MSB
+	u0bits := ToBitsLeftMsb(int(w10s[0]), 10)
+	for i := 0; i < 10; i++ {
+		bits[i] = u0bits[i]
+	}
+	for i := 10; i < 830; i++ {
+		bits[i] = b[i]
+	}
+	return bits
+}
+
+// 解扰，由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行解扰
+func descrambling(dn []byte, S uint32) []byte {
+	if len(dn) != 830 {
+		panic("invalid length")
+	}
+	// const Polynomial = 0x000000AF
+	out := make([]byte, len(dn))
+	t := S // 寄存器初始值
+	for i := 0; i < len(dn); i++ {
+		msb := (t >> 31) & 1
+		out[i] = (dn[i] ^ byte(msb)) & 1
+		// fmt.Printf("i=%d, t=%032b, msb=%d, dn=%d, out=%d\n", i, t, msb, dn[i], out[i])
+		xor := uint32(dn[i])
+		t = (xor << 30) ^ (xor << 29) ^ (xor << 28) ^ (xor << 26) ^ (xor << 24) ^ t
+		t = (t << 1) | xor
+	}
+	return out
+}
+
+// 转换913位数据为830位数据
+func convert913To830(b913 []byte) ([]byte, error) {
+	if len(b913) != 913 {
+		panic("invalid length")
+	}
+	b830 := make([]byte, 830)
+	for i := 0; i < 83; i++ {
+		b10, err := From11(b913[i*11 : i*11+11])
+		if err != nil {
+			return nil, buildError(err.Error())
+		}
+		for j := 0; j < 10; j++ {
+			b830[i*10+j] = b10[j]
+		}
+	}
+	return b830, nil
+}

third_party/balise/encode.go

@@ -0,0 +1,86 @@
+package balise
+
+import (
+	"fmt"
+	"log/slog"
+)
+
+// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组，然后求和后模2的10次方，得到的结果覆盖第一个10位值，然后将整个10位数组转换为二进制数组，依然是左边为MSB
+func replaceFirst10Bits(b []byte) []byte {
+	if len(b) != 830 {
+		panic("invalid length")
+	}
+	// 将830位的二进制数组以10位为单位组成一个左边为最高有效位（MSB）的无符号整数数组
+	bits := make([]uint16, 83)
+	for i := 0; i < 83; i++ {
+		bits[i] = uint16(ToValLeftMsb(b[i*10 : i*10+10]))
+		// 打印输出
+		for j := 0; j < 10; j++ {
+			fmt.Printf("%01b", b[i*10+j])
+		}
+		print(" ")
+		if i != 0 && i%10 == 9 {
+			println()
+		}
+	}
+	println()
+	// 将每一个10位字整数求和后模2的10次方，得到的结果覆盖第一个10位值
+	sum := uint64(0)
+	for i := 0; i < 83; i++ {
+		sum += uint64(bits[i])
+		// fmt.Printf("i=%d, v10=%d, v10b=%010b\n", i, bits[i], bits[i])
+	}
+	bits[0] = uint16(sum % 1024)
+	slog.Info("替换第一个10位值", "sum", sum, "bits[0]", bits[0], "bits[0]b", fmt.Sprintf("%010b", bits[0]))
+	rbits := make([]byte, 830)
+	// 将整个10位数组转换为二进制数组，依然是MSB
+	u0bits := ToBitsLeftMsb(int(bits[0]), 10)
+	for i := 0; i < 10; i++ {
+		rbits[i] = u0bits[i]
+	}
+	for i := 10; i < 830; i++ {
+		rbits[i] = b[i]
+	}
+	// compare830(b, rbits)
+	return rbits
+}
+
+// 由加扰计算得到的S，作为初始状态为S的32位线性反馈移位寄存器对数据进行加扰
+// 1. 生成一个32位的线性反馈移位寄存器，其初始状态为S（左边为MSB）
+// 2. 系数h31,h30,h29,h27,h25和h0等于1(表示连接)，所有其他系数都为0（表示不连接）
+// 3. 然后电路被时钟驱动m-1次，其中m是数据位的数量，同时输入dn的每一位dn(m-1),dn(m-2),...,dn(0),便生成加扰后的码位（在第一个时钟之前读取第一个输出out(m-1)）
+// 4. 生成的加扰码位是dn的每一位与S的最高位的异或值
+// 5. 生成的加扰码位会根据系数进行异或反馈回S的最低位
+// 几种可能性：
+func scrambling(dn []byte, S uint32) []byte {
+	if len(dn) != 830 {
+		panic("invalid length")
+	}
+	// const Polynomial = 0x000000AF
+	out := make([]byte, len(dn))
+	t := S // 寄存器初始值
+	for i := 0; i < len(dn); i++ {
+		msb := (t >> 31) & 1
+		out[i] = (dn[i] ^ byte(msb)) & 1
+		// fmt.Printf("i=%d, t=%032b, msb=%d, dn=%d, out=%d\n", i, t, msb, dn[i], out[i])
+		xor := uint32(out[i])
+		t = (xor << 30) ^ (xor << 29) ^ (xor << 28) ^ (xor << 26) ^ (xor << 24) ^ t
+		t = (t << 1) | xor
+	}
+	return out
+}
+
+// 将830位的二进制数组先以10位为一组分别转换为11位并组合
+func convert830To913(b830 []byte) []byte {
+	if len(b830) != 830 {
+		panic("invalid length")
+	}
+	b913 := make([]byte, 913)
+	for i := 0; i < 83; i++ {
+		b11 := To11(b830[i*10 : i*10+10])
+		for j := 0; j < 11; j++ {
+			b913[i*11+j] = b11[j]
+		}
+	}
+	return b913
+}

third_party/example/main.go

@@ -46,13 +46,13 @@ func main() {
 	// 		fmt.Println()
 	// 	}
 	// }
-	v10 := balise.ToVal([]int{
+	v10 := balise.ToValLeftMsb([]byte{
 		1, 1, 1,
 		1, 1, 1, 1,
 		1, 1, 1, 1,
 		1, 1, 1, 1})
 	fmt.Println(v10)
-	bs := balise.ToBits(1982, 11)
+	bs := balise.ToBitsLeftMsb(1982, 11)
 	fmt.Println(bs)
 	// fmt.Printf("%o\n", balise.ConvWords[511])
 }