chisel调试 ChiselFlatSpec

joe

在DownTicker帖子中，我们通过继承方式产生硬件，但需要调试时，我们用PeekPokeTester,现在改用ChiselFlatpec:
class DownTickerModuleTester(mownTicker) extends PeekPokeTester(m) {
  m.reset
  expect(m.io.ticker,1)
  expect(m.cntReg,2)  //java.util.NoSuchElementException: key not found: UInt(Reg in DownTicker) 说明不能用模块内部变量，只能用IO包裹的val io
  step(1)
  expect(m.io.ticker,0)
//  expect(m.cntReg,2)
  step(1)
  expect(m.io.ticker,0)
//  expect(m.cntReg,2)
  step(1)
  expect(m.io.ticker,1)
//  expect(m.cntReg,2)
  step(1)
  expect(m.io.ticker,0)
//  expect(m.cntReg,2)

}
class DownTickerSpec extends ChiselFlatSpec {
  "DownTicker 3" should "pass" in {
    iotesters.Driver(()=>new DownTicker(3)){
      c=>new DownTickerModuleTester(c)
    }
  }
}

joe

屏幕截图：