调用Dsptools会产生Chisel运行时错误。

Question

我最近开始用Chisel编程，我需要在我的项目中使用dsptools。然而，我有问题，甚至有一个非常简单的案例工作。

例如，下面的代码：

package radix2

import chisel3._
import chisel3.experimental._
import chisel3.util._

import dsptools._
import dsptools.numbers._

class Radix2Butterfly extends Module {
  val io = IO(new Bundle {
    val x1 = Input(FixedPoint(6.W, binaryPoint = 2.BP))
    val x2 = Input(FixedPoint(6.W, binaryPoint = 2.BP))

    val y1 = Output(FixedPoint(12.W, binaryPoint = 4.BP))
    val y2 = Output(FixedPoint(12.W, binaryPoint = 4.BP))
  })

  // Real op
  val twiddle = 1.0.F(2.BP)
  io.y1 := io.x1 + twiddle * io.x2
  io.y2 := io.x1 - twiddle * io.x2
}

object Radix2ButterflyMain extends App {
  println("Generating the Butterfly hardware.")
  emitVerilog(new Radix2Butterfly(), Array("--target-dir", "generated"))
}

在进行sbt测试后，没有问题地工作(我有一个简单的测试)。

但是，只需添加一行，并调用dsptools，如下所示：

package radix2

import chisel3._
import chisel3.experimental._
import chisel3.util._

import dsptools._
import dsptools.numbers._

class Radix2Butterfly extends Module {
  val io = IO(new Bundle {
    val x1 = Input(FixedPoint(6.W, binaryPoint = 2.BP))
    val x2 = Input(FixedPoint(6.W, binaryPoint = 2.BP))

    val a1 = Input(DspComplex(FixedPoint(6.W, 4.BP), FixedPoint(6.W, 4.BP)))

    val y1 = Output(FixedPoint(12.W, binaryPoint = 4.BP))
    val y2 = Output(FixedPoint(12.W, binaryPoint = 4.BP))
  })

  // Real op
  val twiddle = 1.0.F(2.BP)
  io.y1 := io.x1 + twiddle * io.x2
  io.y2 := io.x1 - twiddle * io.x2
}

object Radix2ButterflyMain extends App {
  println("Generating the Butterfly hardware.")
  emitVerilog(new Radix2Butterfly(), Array("--target-dir", "generated"))
}

产生以下错误：

[info] - should pass *** FAILED ***
[info]   java.lang.AssertionError: assertion failed: The Chisel compiler plugin is now required for compiling Chisel code. Please see https://github.com/chipsalliance/chisel3#build-your-own-chisel-projects.
[info]   at ... ()
[info]   at dsptools.numbers.DspComplex.<init>(DspComplex.scala:59)
[info]   at dsptools.numbers.DspComplex$.apply(DspComplex.scala:24)
[info]   at radix2.Radix2Butterfly$$anon$1.$anonfun$a1$1(Radix2Butterfly.scala:21)
[info]   at chisel3.internal.plugin.package$.autoNameRecursively(package.scala:33)
[info]   at radix2.Radix2Butterfly$$anon$1.<init>(Radix2Butterfly.scala:21)
[info]   at radix2.Radix2Butterfly.$anonfun$io$2(Radix2Butterfly.scala:13)
[info]   at chisel3.internal.prefix$.apply(prefix.scala:48)
[info]   at radix2.Radix2Butterfly.$anonfun$io$1(Radix2Butterfly.scala:13)
[info]   at chisel3.internal.plugin.package$.autoNameRecursively(package.scala:33)
[info]   ...

我的文件build.sbt如下所示：

// scalaVersion := "2.13.7"
 scalaVersion := "2.12.13"

scalacOptions ++= Seq(
  "-deprecation",
  "-feature",
  "-unchecked",
  // "-Xfatal-warnings",
  // "-Xsource:2.11", // not for 3.5, but for 3.4
  "-language:reflectiveCalls",
  "-Xcheckinit",
  // Enables autoclonetype2
  "-P:chiselplugin:genBundleElements" // not for 3.5, but for 3.4
)

resolvers ++= Seq(
  Resolver.sonatypeRepo("snapshots"),
  Resolver.sonatypeRepo("releases")
)

val chiselVersion = "3.5.3"
addCompilerPlugin("edu.berkeley.cs" %% "chisel3-plugin" % chiselVersion cross CrossVersion.full)
libraryDependencies += "edu.berkeley.cs" %% "chisel3" % chiselVersion
libraryDependencies += "edu.berkeley.cs" %% "chisel-iotesters" % "2.5.0"
libraryDependencies += "edu.berkeley.cs" %% "chiseltest" % "0.5.3"
libraryDependencies += "edu.berkeley.cs" %% "rocket-dsptools" % "1.2.6"

我相信它拥有我所需要的一切，包括错误输出所指的Chisel编译器插件。将非常感谢帮助解决这个问题。

非常感谢。

Answer 1

rocket-dsptools是针对CHISE3.2.6 1编译的。Chisel只维护主要版本的二进制兼容性(版本控制方案为<epoch>.<major>.<minor>，参见2)。火箭-dsptools不是由任何人维护的，所以您不能将它与最新版本的Chisel一起使用。如果您愿意的话，您将需要从源代码构建它(并且可能会更新很多东西，因为3.2.6已经超过2年了)。

Maven POM：https://search.maven.org/artifact/edu.berkeley.cs/rocket-dsptools_2.12/1.2.6/jar中的

• 1参见

https://www.chisel-lang.org/chisel3/docs/appendix/versioning.html

• 2 Chisel项目版本控制