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// SPDX-License-Identifier: Apache-2.0
package chisel3
import scala.language.experimental.macros
import chisel3.internal.Builder.pushOp
import chisel3.internal.firrtl._
import chisel3.internal.sourceinfo._
import chisel3.internal.firrtl.PrimOp.AsUIntOp
object Clock {
def apply(): Clock = new Clock
}
// TODO: Document this.
sealed class Clock(private[chisel3] val width: Width = Width(1)) extends Element {
override def toString: String = stringAccessor("Clock")
def cloneType: this.type = Clock().asInstanceOf[this.type]
private[chisel3] def typeEquivalent(that: Data): Boolean =
this.getClass == that.getClass
override def connect(that: Data)(implicit sourceInfo: SourceInfo, connectCompileOptions: CompileOptions): Unit =
that match {
case _: Clock | DontCare => super.connect(that)(sourceInfo, connectCompileOptions)
case _ => super.badConnect(that)(sourceInfo)
}
override def litOption: Option[BigInt] = None
/** Not really supported */
def toPrintable: Printable = PString("CLOCK")
/** Returns the contents of the clock wire as a [[Bool]]. */
final def asBool: Bool = macro SourceInfoTransform.noArg
@deprecated(
"Calling this function with an empty argument list is invalid in Scala 3. Use the form without parentheses instead",
"Chisel 3.5"
)
final def asBool(dummy: Int*): Bool = macro SourceInfoTransform.noArgDummy
def do_asBool(implicit sourceInfo: SourceInfo, compileOptions: CompileOptions): Bool = this.asUInt.asBool
override def do_asUInt(implicit sourceInfo: SourceInfo, connectCompileOptions: CompileOptions): UInt = pushOp(
DefPrim(sourceInfo, UInt(this.width), AsUIntOp, ref)
)
private[chisel3] override def connectFromBits(
that: Bits
)(
implicit sourceInfo: SourceInfo,
compileOptions: CompileOptions
): Unit = {
this := that.asBool.asClock
}
}
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