diff --git a/api/simulation.go b/api/simulation.go
index a9f5ef0..34dc47f 100644
--- a/api/simulation.go
+++ b/api/simulation.go
@@ -302,7 +302,7 @@ func signalOperation(c *gin.Context) {
 // @Success		200	{object}	string
 // @Failure		500	{object}	dto.ErrorDto
 // @Router			/api/v1/simulation/axleSection/operation [post]
-func axleSectionOperation(c *gin.Context) {
+func axleSectionOperation(c *gin.Context) { //操作：设置故障占用、取消故障占用、计轴直接复位、计轴预复位
 	req := &dto.AxleSectionOperationReqDto{}
 	if err := c.ShouldBind(&req); err != nil {
 		panic(sys_error.New("输入参数格式错误", err))
diff --git a/third_party/message/rssp_crc.go b/third_party/message/rssp_crc.go
index e28415b..f51e8fc 100644
--- a/third_party/message/rssp_crc.go
+++ b/third_party/message/rssp_crc.go
@@ -189,3 +189,40 @@ func CrcBitOrientedMsbFirst(data []byte, polynomial uint32, width int) uint32 {
 	}
 	return register1 & significant_mask
 }
+func Crc(data []byte,
+	polynomial uint32,
+	width int,
+	initial_value uint32,
+	input_reflected bool,
+	result_reflected bool,
+	final_xor_value uint32) uint32 {
+	length := len(data)
+	var register1 uint32 = initial_value
+	var significant_mask uint32 = 0xffffffff >> (32 - width)
+	var register_lsb_mask uint32 = 0xff
+
+	if input_reflected {
+		register1 = reflect(register1, width)
+	}
+
+	for i := 0; i < length; i++ {
+		var byteData uint32 = uint32(data[i])
+		var shift_out uint32 = 0
+		var value uint32 = 0
+
+		if input_reflected {
+			shift_out = register1 & register_lsb_mask
+			value = Lookup(shift_out^byteData, polynomial, width, input_reflected)
+			register1 = (register1 >> 8) ^ value
+		} else {
+			shift_out = (register1 >> (width - 8)) & register_lsb_mask
+			value = Lookup(shift_out^byteData, polynomial, width, input_reflected)
+			register1 = (register1 << 8) ^ value
+		}
+	}
+
+	if input_reflected != result_reflected {
+		register1 = reflect(register1, width)
+	}
+	return (register1 ^ final_xor_value) & significant_mask
+}