将OpenSoCFabric1.1.2从Chisel2重写为Chisel3时，“要连接的数据必须是硬件，而不是裸凿类型”

Question

我正在尝试将OpenSoCFaric-1.1.2从chisel2重写到chisel3。但是对于下面的代码，我遇到错误信息"data to be connected 'chisel3.core.UInt@103‘必须是硬件，而不是一个裸凿类型“：

文件: packettoFlit.scala类: PacketToFlit val flitWidth = Flit.fromBits(0.U，parms).getWidth

File:channel.scala对象: Flit

object Flit {
    def head(h: HeadFlit) : Flit = {
        val f = new Flit(h.parms)
        f.x := f.union.pack("Head", h)
        f
    }

    def body(b: BodyFlit) : Flit = {
        val f = new Flit(b.parms)
        f.x := f.union.pack("Body", b)
        f
    }

    def fromBits(n: UInt, parms: Parameters) : Flit = {
        val f = new Flit(parms)
        f.x := n
        f
    }

    /*
    def zeroHead(parms: Parameters) : HeadFlit = {
        val x = new HeadFlit(parms)
        x.
    }
    */
}

现在我对如何重写这样的代码段来修复错误没有好的想法。你能给我一些帮助或建议吗？非常感谢!

Answer 1

我们需要看到更多的错误消息(行号)和更多的代码来提供明确的答案，但我们猜测，在需要文字(y.U)的地方使用了UInt(x.W)，或者缺少Wire()/WireInit()包装器。

注意: LBL正在积极地将这段代码迁移到Chisel3。你最好等着他们的作品出版。

Answer 2

下面是Flit类的源代码。

class Flit(parms: Parameters) extends Bundle {
    val union   = new BitUnion(Map("Head" -> new HeadFlit(parms), "Body" -> new BodyFlit(parms)))
    val x       = UInt(union.width.W)
    val numVCs  = parms.get[Int]("numVCs")

    def asHead(dummy: Int = 0) : HeadFlit = union.unpack[HeadFlit]("Head", x)
    def asBody(dummy: Int = 0) : BodyFlit = union.unpack[BodyFlit]("Body", x)

    def whenHead(block: HeadFlit => Unit) { union.whenTag[HeadFlit]("Head", x)(block) }
    def whenBody(block: BodyFlit => Unit) { union.whenTag[BodyFlit]("Body", x)(block) }

    def isHead(dummy: Int = 0) : Bool = union.tagEquals("Head", x)
    def isBody(dummy: Int = 0) : Bool = union.tagEquals("Body", x)
    def isTail(dummy: Int = 0) : Bool = {
        val tailBit = Bool()
        when (isHead()) {
            tailBit := union.unpack[HeadFlit]("Head", x).isTail
        } .otherwise {
            tailBit := union.unpack[BodyFlit]("Body", x).isTail
        }
        tailBit
    }
    def getVCPort(dummy: Int = 0) : UInt = {
        val vcBits = UInt(log2Ceil(numVCs).W)
        when (isHead()) {
            vcBits := union.unpack[HeadFlit]("Head", x).vcPort
        } .otherwise {
            vcBits := union.unpack[BodyFlit]("Body", x).vcPort
        }
        vcBits
    }

    //override def clone = { new Flit(parms).asInstanceOf[this.type] }
    override def cloneType: this.type = new Flit(parms).asInstanceOf[this.type]
    // override def width : Int = {x.width}
}

非常感谢!Bibo