Add basic breadboard simulator

2026-08-17 14:28:52 -06:00
parent 0393dacf63
commit cb0df5728c
50 changed files with 10977 additions and 0 deletions
@@ -0,0 +1,36 @@
+/**
+ * 5 V power supply. Two pins: pin 1 (v+) onto a plus rail, pin 2 (gnd) onto the
+ * matching minus rail.
+ *
+ * Drives at STRENGTH_SUPPLY rather than STRENGTH_STRONG. A rail is not just a
+ * strong output — it wins against one, and two supply drivers of opposite
+ * polarity meeting on one net is a short circuit rather than ordinary
+ * contention. Keeping supply as its own strength is what lets net-state tell
+ * those two faults apart.
+ */
+
+import { STRENGTH_SUPPLY, VALUE_HIGH, VALUE_LOW } from '../constants.js';
+import { defineModel } from './registry.js';
+
+const PIN_PLUS = 0;
+const PIN_GND = 1;
+
+defineModel({
+	type: 'powerSupply5V',
+	pinCount: 2,
+	delayNs: 0,
+
+	init(ctx, inst) {
+		if (inst.pins[PIN_PLUS] < 0 || inst.pins[PIN_GND] < 0) {
+			ctx.staticWarning('unconnectedSupply', `power supply ${inst.uid} is not attached to a rail pair`, [inst.uid]);
+			return;
+		}
+		ctx.driveNow(inst, PIN_PLUS, STRENGTH_SUPPLY, VALUE_HIGH);
+		ctx.driveNow(inst, PIN_GND, STRENGTH_SUPPLY, VALUE_LOW);
+	},
+
+	// A supply is not sensitive to anything: it holds its rails regardless of
+	// what else lands on them, which is exactly how a short circuit becomes
+	// visible instead of being resolved away.
+	evaluate() {},
+});