waitCycles method

Future<void> waitCycles(
  1. int numCycles, {
  2. Edge edge = Edge.pos,
})

Returns a Future which completes after the specified numCycles, where each cycle is defined as the next occurence of the specified edge.

width must be 1 or an Exception will be thrown.

Like nextNegedge and nextPosedge, this will only detect valid edge transitions. If the value is invalid (x or z) before or after the transition, it will not count as a cycle.

Implementation

Future<void> waitCycles(int numCycles, {Edge edge = Edge.pos}) async {
  if (width != 1) {
    throw Exception('Must be a 1-bit signal, but was $width bits.');
  }

  for (var i = 0; i < numCycles; i++) {
    switch (edge) {
      case Edge.pos:
        await nextPosedge;
      case Edge.neg:
        await nextNegedge;
      case Edge.any:
        await Future.any([
          nextPosedge,
          nextNegedge,
        ]);
    }
  }
}