使用Mux的捆绑

Question

我想使用Mux选择bundle enter代码，这里是类ComIO { val = Input(UInt(32.W) val =UInt(32.W)})

class EntIO extends Bundle {
  val com = new ComIO
}
class Ent extends Module {
  val io = IO(new EntIO)
  ...
}
class DemoIO extends Bundle {
  val com1 = new ComIO
  val com2 = new ComIO
  val en = Input(Bool())
}

class Demo extends Module {
  val io = IO(new DemoIO)
  val ent = Module(new Ent)

  ent.io <> Mux(io.en,io.com1,io.com2)
}

enter code here

错误在流动

在这里输入图像描述

Answer 1

Muxes是单向的，您不能将它们用于双向事物。尝试使用when

class Demo extends Module {
  val io = IO(new DemoIO)
  val ent = Module(new Ent)

  when (io.en) {
    ent.io <> io.com1
  } .otherwise {
    ent.io <> io.com2
  }
}