chisel调试 ChiselFlatSpec
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(m:DownTicker) 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)
}
}
}
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