era.mi/src/net/mograsim/logic/core/components/Clock.java

   1 package net.mograsim.logic.core.components;\r
   2 \r
   3 import java.util.List;\r
   4 \r
   5 import net.mograsim.logic.core.timeline.Timeline;\r
   6 import net.mograsim.logic.core.timeline.TimelineEvent;\r
   7 import net.mograsim.logic.core.timeline.TimelineEventHandler;\r
   8 import net.mograsim.logic.core.types.Bit;\r
   9 import net.mograsim.logic.core.wires.Wire;\r
  10 import net.mograsim.logic.core.wires.Wire.ReadEnd;\r
  11 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;\r
  12 \r
  13 public class Clock extends Component implements TimelineEventHandler\r
  14 {\r
  15         private boolean toggle = false;\r
  16         private ReadWriteEnd out;\r
  17         private int delta;\r
  18 \r
  19         /**\r
  20          * \r
  21          * @param out   {@link Wire} the clock's impulses are fed into\r
  22          * @param delta ticks between rising and falling edge\r
  23          */\r
  24         public Clock(Timeline timeline, ReadWriteEnd out, int delta)\r
  25         {\r
  26                 super(timeline);\r
  27                 this.delta = delta;\r
  28                 this.out = out;\r
  29                 addToTimeline();\r
  30         }\r
  31 \r
  32         @Override\r
  33         public void handle(TimelineEvent e)\r
  34         {\r
  35                 addToTimeline();\r
  36                 out.feedSignals(toggle ? Bit.ONE : Bit.ZERO);\r
  37                 toggle = !toggle;\r
  38         }\r
  39 \r
  40         public ReadWriteEnd getOut()\r
  41         {\r
  42                 return out;\r
  43         }\r
  44 \r
  45         private void addToTimeline()\r
  46         {\r
  47                 timeline.addEvent(this, delta);\r
  48         }\r
  49 \r
  50         @Override\r
  51         public List<ReadEnd> getAllInputs()\r
  52         {\r
  53                 return List.of();\r
  54         }\r
  55 \r
  56         @Override\r
  57         public List<ReadWriteEnd> getAllOutputs()\r
  58         {\r
  59                 return List.of(out);\r
  60         }\r
  61 }\r