76 lines
2.8 KiB
TypeScript
76 lines
2.8 KiB
TypeScript
// Pull-Up or Pull-Down component for the LogicSimulator
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// Copyright (C) 2022 Sascha Nitsch
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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// eslint-disable-next-line @typescript-eslint/no-unused-vars
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class Pull extends BaseComponent {
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private a = WireState.float;
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private b = WireState.float;
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constructor(simulator: Simulator, id: string, param: BaseComponentParam) {
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super(simulator, id, param);
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const r = (this.rotate / 180) * Math.PI;
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this.pins.set('a', new TriState(this, 0, 0, undefined, { id: id + '-a' }));
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this.pins.set(
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'b',
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new TriState(this, Math.sin(r) * -40 * this.scaleX, Math.cos(r) * 40 * this.scaleY, undefined, {
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type: 'Pull',
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id: id + '-b',
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})
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);
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}
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setup(canvas: SVGElement) {
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super.doSetup('pull', canvas);
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if (this.breadboard) {
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this.simulator.wire(null, [this.getPin('a'), this.breadboard.getPin(this.pin)]);
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}
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}
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io() {
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this.a = this.getPin('a').getAndReset();
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this.b = this.getPin('b').getAndReset();
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}
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update() {
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let mod = false;
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let s: WireState;
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if (this.b === WireState.high || this.b === WireState.low) {
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// up, down driven by b
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s = this.b === WireState.high ? WireState.up : WireState.down;
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mod ||= s !== this.a;
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this.getPin('a').setState(s);
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this.getPin('b').setState(WireState.float);
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} else if (this.a === WireState.high || this.a === WireState.low) {
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// up, down driven by a
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s = this.a === WireState.high ? WireState.up : this.a === WireState.low ? WireState.down : this.a;
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this.getPin('b').setState(s);
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mod ||= s !== this.b;
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this.getPin('a').setState(WireState.float);
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} else if (this.b !== WireState.float) {
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// b is pushed up or pulled down
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s = this.b === WireState.up ? WireState.up : WireState.down;
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mod ||= s !== this.a;
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this.getPin('a').setState(s);
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} else if (this.a !== WireState.float) {
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// s is pushed up or pulled down
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s = this.a === WireState.up ? WireState.up : WireState.down;
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mod ||= s !== <WireState>this.b;
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this.getPin('b').setState(s);
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}
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//console.log(this.id,"a:",this.state.a, "b:",this.state.b, "new a:", this.a.get(), "new b:", this.b.get());
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return mod;
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}
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}
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