separate PWM and basic example into separate packages

src/main/scala/example/Configs.scala

@@ -0,0 +1,7 @@
+package example
+
+import cde.{Parameters, Config, CDEMatchError}
+import testchipip.WithSerialAdapter
+
+class DefaultExampleConfig extends Config(
+  new WithSerialAdapter ++ new rocketchip.BaseConfig)

src/main/scala/example/TestHarness.scala

@@ -0,0 +1,35 @@
+package example
+
+import util.GeneratorApp
+import diplomacy.LazyModule
+import rocketchip._
+import testchipip._
+import chisel3._
+import cde.Parameters
+
+class TestHarness(implicit val p: Parameters) extends Module {
+  val io = new Bundle {
+    val success = Bool(OUTPUT)
+  }
+
+  def buildTop(p: Parameters): ExampleTop = LazyModule(new ExampleTop(p))
+
+  val dut = buildTop(p).module
+  val ser = Module(new SimSerialWrapper(p(SerialInterfaceWidth)))
+
+  val nMemChannels = dut.io.mem_axi.size
+  for (axi <- dut.io.mem_axi) {
+    val mem = Module(new SimAXIMem(BigInt(p(ExtMemSize) / nMemChannels)))
+    mem.io.axi <> axi
+  }
+
+  ser.io.serial <> dut.io.serial
+  io.success := ser.io.exit
+}
+
+object Generator extends GeneratorApp {
+  val longName = names.topModuleProject + "." +
+                 names.topModuleClass + "." +
+                 names.configs
+  generateFirrtl
+}

src/main/scala/example/Top.scala

@@ -0,0 +1,23 @@
+package example
+
+import chisel3._
+import cde.Parameters
+import testchipip._
+import rocketchip._
+
+class ExampleTop(q: Parameters) extends BaseTop(q)
+    with PeripheryBootROM with PeripheryCoreplexLocalInterrupter
+    with PeripherySerial with PeripheryMasterMem {
+  override lazy val module = Module(
+    new ExampleTopModule(p, this, new ExampleTopBundle(p)))
+}
+
+class ExampleTopBundle(p: Parameters) extends BaseTopBundle(p)
+  with PeripheryBootROMBundle with PeripheryCoreplexLocalInterrupterBundle
+  with PeripheryMasterMemBundle with PeripherySerialBundle
+
+class ExampleTopModule[+L <: ExampleTop, +B <: ExampleTopBundle](p: Parameters, l: L, b: => B)
+  extends BaseTopModule(p, l, b)
+  with PeripheryBootROMModule with PeripheryCoreplexLocalInterrupterModule
+  with PeripheryMasterMemModule with PeripherySerialModule
+  with HardwiredResetVector with DirectConnection with NoDebug