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// See LICENSE for license details.
package chiselTests
import chisel3._
class SimpleIO extends Bundle {
val in = Input(UInt(32.W))
val out = Output(UInt(32.W))
}
class PlusOne extends Module {
val io = IO(new SimpleIO)
io.out := io.in + 1.asUInt
}
class ModuleVec(val n: Int) extends Module {
val io = IO(new Bundle {
val ins = Input(Vec(n, 32.U))
val outs = Output(Vec(n, 32.U))
})
val pluses = Vec.fill(n){ Module(new PlusOne).io }
for (i <- 0 until n) {
pluses(i).in := io.ins(i)
io.outs(i) := pluses(i).out
}
}
/*
class ModuleVecTester(c: ModuleVec) extends Tester(c) {
for (t <- 0 until 16) {
val test_ins = Array.fill(c.n){ rnd.nextInt(256) }
for (i <- 0 until c.n)
poke(c.io.ins(i), test_ins(i))
step(1)
for (i <- 0 until c.n)
expect(c.io.outs(i), test_ins(i) + 1)
}
}
*/
class ModuleWire extends Module {
val io = IO(new SimpleIO)
val inc = Wire(Module(new PlusOne).io.chiselCloneType)
inc.in := io.in
io.out := inc.out
}
/*
class ModuleWireTester(c: ModuleWire) extends Tester(c) {
for (t <- 0 until 16) {
val test_in = rnd.nextInt(256)
poke(c.io.in, test_in)
step(1)
expect(c.io.out, test_in + 1)
}
}
*/
class ModuleWhen extends Module {
val io = IO(new Bundle {
val s = new SimpleIO
val en = Bool()
})
when(io.en) {
val inc = Module(new PlusOne).io
inc.in := io.s.in
io.s.out := inc.out
} otherwise { io.s.out := io.s.in }
}
class ModuleForgetWrapper extends Module {
val io = IO(new SimpleIO)
val inst = new PlusOne
}
class ModuleDoubleWrap extends Module {
val io = IO(new SimpleIO)
val inst = Module(Module(new PlusOne))
}
class ModuleRewrap extends Module {
val io = IO(new SimpleIO)
val inst = Module(new PlusOne)
val inst2 = Module(inst)
}
class ModuleSpec extends ChiselPropSpec {
property("ModuleVec should elaborate") {
elaborate { new ModuleVec(2) }
}
ignore("ModuleVecTester should return the correct result") { }
property("ModuleWire should elaborate") {
elaborate { new ModuleWire }
}
ignore("ModuleWireTester should return the correct result") { }
property("ModuleWhen should elaborate") {
elaborate { new ModuleWhen }
}
ignore("ModuleWhenTester should return the correct result") { }
property("Forgetting a Module() wrapper should result in an error") {
(the [ChiselException] thrownBy {
elaborate { new ModuleForgetWrapper }
}).getMessage should include("attempted to instantiate a Module without wrapping it")
}
property("Double wrapping a Module should result in an error") {
(the [ChiselException] thrownBy {
elaborate { new ModuleDoubleWrap }
}).getMessage should include("Called Module() twice without instantiating a Module")
}
property("Rewrapping an already instantiated Module should result in an error") {
(the [ChiselException] thrownBy {
elaborate { new ModuleRewrap }
}).getMessage should include("This is probably due to rewrapping a Module instance")
}
}
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