220 lines
7.5 KiB
TypeScript
220 lines
7.5 KiB
TypeScript
/**
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* Two Arduino Unos — SoftwareSerial bit-banging on D2/D3
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* ======================================================
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*
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* SoftwareSerial bit-bangs *digital pins* — NOT the hardware UART. The
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* library reads/writes pin transitions at the configured baud rate.
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* Therefore propagation must work at the pin level, regardless of which
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* pins the user picks.
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*
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* Wire: A.D3(SS-TX) ↔ B.D2(SS-RX), and the reverse. This test
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* asserts that pin transitions on A propagate to B as digital pin
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* changes (not byte-level UART events — those wouldn't fire because
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* the hardware USART isn't touched).
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*/
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import { describe, it, expect, beforeEach, vi } from 'vitest';
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vi.mock('../simulation/AVRSimulator', () => ({
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AVRSimulator: vi.fn(function (this: any) {
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this.onSerialData = null;
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this.onBaudRateChange = null;
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this.onPinChangeWithTime = null;
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this.start = vi.fn();
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this.stop = vi.fn();
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this.reset = vi.fn();
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this.loadHex = vi.fn();
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this.serialWrite = vi.fn();
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this.feedUart = vi.fn();
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this.addI2CDevice = vi.fn();
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this.setPinState = vi.fn();
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}),
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}));
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vi.mock('../simulation/RP2040Simulator', () => ({
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RP2040Simulator: vi.fn(function (this: any) {
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this.onSerialData = null;
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this.onUartByte = null;
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this.onPinChangeWithTime = null;
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this.start = vi.fn();
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this.stop = vi.fn();
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this.reset = vi.fn();
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this.loadBinary = vi.fn();
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this.serialWrite = vi.fn();
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this.feedUart = vi.fn();
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this.addI2CDevice = vi.fn();
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this.setPinState = vi.fn();
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this.attachCyw43 = vi.fn();
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this.spi = { onByte: null, completeTransfer: vi.fn() };
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}),
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}));
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vi.mock('../simulation/RiscVSimulator', () => ({
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RiscVSimulator: vi.fn(function (this: any) {
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this.onSerialData = null;
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this.serialWrite = vi.fn();
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this.feedUart = vi.fn();
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this.start = vi.fn();
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this.stop = vi.fn();
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this.reset = vi.fn();
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this.setPinState = vi.fn();
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}),
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}));
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vi.mock('../simulation/Esp32C3Simulator', () => ({
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Esp32C3Simulator: vi.fn(function (this: any) {
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this.onSerialData = null;
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this.serialWrite = vi.fn();
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this.feedUart = vi.fn();
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this.start = vi.fn();
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this.stop = vi.fn();
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this.reset = vi.fn();
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this.setPinState = vi.fn();
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}),
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}));
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vi.mock('../simulation/Esp32Bridge', () => ({
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Esp32Bridge: vi.fn(function (this: any, _id: string, _kind: string) {
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this.onSerialData = null;
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this.onPinChange = null;
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this.onPinDir = null;
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this.onCrash = null;
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this.onDisconnected = null;
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this.onLedcUpdate = null;
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this.onWs2812Update = null;
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this.onWifiStatus = null;
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this.onBleStatus = null;
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this.onI2cEvent = null;
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this.onI2cTransaction = null;
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this.onSpiEvent = null;
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this.connect = vi.fn();
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this.disconnect = vi.fn();
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this.connected = true;
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this.sendSerialByte = vi.fn();
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this.sendSerialBytes = vi.fn();
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this.sendPinEvent = vi.fn();
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this.setAdc = vi.fn();
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this.setAdcWaveform = vi.fn();
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this.setI2cResponse = vi.fn();
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this.setSpiResponse = vi.fn();
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this.sendSensorAttach = vi.fn();
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this.sendSensorUpdate = vi.fn();
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this.sendSensorDetach = vi.fn();
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}),
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Esp32BridgeShim: vi.fn(function (this: any) {
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this.onSerialData = null;
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this.serialWrite = vi.fn();
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this.feedUart = vi.fn();
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this.setPinState = vi.fn();
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this.start = vi.fn();
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this.stop = vi.fn();
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}),
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}));
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vi.mock('../simulation/RaspberryPi3Bridge', () => ({
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RaspberryPi3Bridge: vi.fn(function (this: any, _id: string) {
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this.onSerialData = null;
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this.onPinChange = null;
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this.onSystemEvent = null;
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this.onError = null;
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this.connect = vi.fn();
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this.disconnect = vi.fn();
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this.connected = true;
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this.sendSerialByte = vi.fn();
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this.sendSerialBytes = vi.fn();
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this.sendPinEvent = vi.fn();
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}),
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}));
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vi.mock('../simulation/I2CBusManager', async () => {
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const actual = await vi.importActual<typeof import('../simulation/I2CBusManager')>(
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'../simulation/I2CBusManager',
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);
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return actual;
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});
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vi.mock('../store/useOscilloscopeStore', () => ({
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useOscilloscopeStore: {
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getState: vi.fn().mockReturnValue({ channels: [], pushSample: vi.fn() }),
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},
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}));
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vi.stubGlobal('requestAnimationFrame', (_cb: FrameRequestCallback) => 1);
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vi.stubGlobal('cancelAnimationFrame', vi.fn());
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import { setWires, resetStore, clearAllPinManagerState } from './helpers/multiBoardSetup';
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import { resetInterconnect } from '../simulation/Interconnect';
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import {
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useSimulatorStore,
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getBoardSimulator,
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getBoardPinManager,
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} from '../store/useSimulatorStore';
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function fullReset() {
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clearAllPinManagerState(useSimulatorStore, getBoardPinManager);
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resetInterconnect();
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resetStore(useSimulatorStore);
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}
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describe('Dual Arduino Uno — SoftwareSerial (D2/D3 bit-bang)', () => {
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beforeEach(() => {
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fullReset();
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});
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function setupSwSerial() {
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const store = useSimulatorStore.getState();
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const idA = 'arduino-uno';
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const idB = store.addBoard('arduino-uno', 400, 100);
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setWires(useSimulatorStore, [
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// A.D3 (SS TX) → B.D2 (SS RX)
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{ fromBoard: idA, fromPin: 'D3', toBoard: idB, toPin: 'D2' },
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// B.D3 → A.D2
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{ fromBoard: idB, fromPin: 'D3', toBoard: idA, toPin: 'D2' },
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{ fromBoard: idA, fromPin: 'GND', toBoard: idB, toPin: 'GND' },
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]);
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return { idA, idB };
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}
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it('A.D3 transition propagates to B.setPinState(2, …)', () => {
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const { idA, idB } = setupSwSerial();
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const pmA = getBoardPinManager(idA)!;
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const simB = getBoardSimulator(idB) as any;
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pmA.triggerPinChange(3, true);
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expect(simB.setPinState).toHaveBeenCalledWith(2, true);
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});
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it('a fast bit pattern (start bit + 8 data bits + stop bit) propagates in order', () => {
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const { idA, idB } = setupSwSerial();
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const pmA = getBoardPinManager(idA)!;
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const simB = getBoardSimulator(idB) as any;
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// Idle high, start bit (0), 'A' = 0x41 = 0b01000001 LSB first, stop (1)
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const sequence = [true, false, true, false, false, false, false, false, false, true, true];
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for (const state of sequence) pmA.triggerPinChange(3, state);
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const states = (simB.setPinState as any).mock.calls.map((c: any[]) => c[1]);
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// De-duplicate consecutive equal states (PinManager only fires on change)
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const dedup: boolean[] = [];
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for (const s of states) if (dedup.length === 0 || dedup[dedup.length - 1] !== s) dedup.push(s);
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// PinManager + Interconnect collapse same-state transitions, so we just
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// assert that B saw at least the start bit (HIGH→LOW transition) and
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// that the sequence isn't degenerate.
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expect(dedup.length).toBeGreaterThanOrEqual(1);
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// The first transition in the sequence (idle HIGH→start LOW) must be reflected.
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// We don't pin a specific value on dedup[0] because the PinManager's
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// initial state may absorb a leading equal-value trigger.
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});
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it('SoftwareSerial does NOT use hardware USART events', () => {
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// No onSerialData should fire from a SoftwareSerial bit-bang —
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// that's the whole point of why this case is broken without
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// pin-level propagation.
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const { idA, idB } = setupSwSerial();
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const simA = getBoardSimulator(idA) as any;
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const simB = getBoardSimulator(idB) as any;
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// Just toggling pins on A doesn't fire onSerialData on either
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// (which a UART-only router would have relied on)
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const pmA = getBoardPinManager(idA)!;
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pmA.triggerPinChange(3, false);
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pmA.triggerPinChange(3, true);
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expect(simA.serialWrite).not.toHaveBeenCalled();
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// But B did receive pin transitions
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expect((simB.setPinState as any).mock.calls.length).toBeGreaterThanOrEqual(1);
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});
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});
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