abstract class SteppedHWIOTester extends HWIOTester
Use a UnitTester to construct a test harness for a chisel module this module will be canonically referred to as the device_under_test, often simply as c in a unit test, and also dut The UnitTester is used to put series of values (as chisel3.Vec's) into the ports of the dut io which are INPUT At specified times it check the dut io OUTPUT ports to see that they match a specific value The vec's are assembled through the following API poke, expect and step, pokes
- Source
- SteppedHWIOTester.scala
class Adder(width:Int) extends Module { val io = new Bundle { val in0 : UInt(INPUT, width=width) val in1 : UInt(INPUT, width=width) val out : UInt(OUTPUT, width=width) } } class AdderTester extends UnitTester { val device_under_test = Module( new Adder(32) ) testBlock { poke(c.io.in0, 5) poke(c.io.in1, 7) expect(c.io.out, 12) } }
Example:
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- new SteppedHWIOTester()
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- abstract val device_under_test: Module
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- def expect(io_port: Data, bool_value: Boolean): Unit
- def expect(io_port: Data, value: BigInt): Unit
- def finish(): Unit
- Definition Classes
- SteppedHWIOTester → HWIOTester → BasicTester
- final def getClass(): Class[_ <: AnyRef]
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- def getCommands: Seq[Command]
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- def logPrintfDebug(fmt: String, args: Bits*): Unit
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- def poke(io_port: Data, value: BigInt): Unit
- def popCount(n: Long): Int
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- def portsContains(elem: Data): Boolean
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- def portsSize: Int
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- final val reset: Reset
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- val rnd: Random.type
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- HWIOTester
- def step(number_of_cycles: Int): Unit
- def stop()(implicit sourceInfo: SourceInfo): Unit
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- BasicTester
- def suggestName(seed: => String): SteppedHWIOTester.this.type
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(Since version Chisel 3.5) Use DataMirror.fullModulePorts instead. this API will be removed in Chisel 3.6
- def override_clock: Option[Clock]
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(Since version Chisel 3.5) Use withClock at Module instantiation
- def override_clock_=(rhs: Option[Clock]): Unit
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(Since version Chisel 3.5) Use withClock at Module instantiation
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(Since version Chisel 3.5) Use withClock at Module instantiation
- def override_reset_=(rhs: Option[Bool]): Unit
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- @deprecated
- Deprecated
(Since version Chisel 3.5) Use withClock at Module instantiation