306 lines
10 KiB
HTML
306 lines
10 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Exercise Bike Display</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet" />
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<script src="https://d3js.org/d3.v7.min.js"></script>
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<script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script>
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<style>
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.graph-container {
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width: 100%;
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height: 200px;
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}
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#graph {
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background-color: #ffffff;
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box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
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}
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</style>
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</head>
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<body class="bg-gray-200">
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<div class="mx-auto max-w-md p-6 bg-white rounded-md shadow-md md:mt-5">
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<div class="mt-6">
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<div class="flex items-center justify-between">
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<div>
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<p class="text-lg font-medium">RPM</p>
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<p id="rpm-display" class="text-3xl font-bold">0</p>
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</div>
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<div>
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<p class="text-lg font-medium">Duration</p>
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<p id="duration-display" class="text-3xl font-bold">00:00</p>
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</div>
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</div>
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<div class="mt-8">
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<button id="toggle-button"
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class="px-4 py-2 text-white bg-blue-500 rounded-md hover:bg-blue-600">Start</button>
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</div>
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<div class="mt-8">
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<div class="flex justify-center items-center bg-gray-200">
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<svg id="graph" class="bg-white shadow-md"></svg>
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</div>
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</div>
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</div>
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</div>
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<script>
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// Get DOM elements
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const rpmDisplay = document.getElementById('rpm-display');
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const durationDisplay = document.getElementById('duration-display');
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const toggleButton = document.getElementById('toggle-button');
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// Initialize variables
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let rpm = 0;
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let power = 0;
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let isRunning = false;
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let startTime = 0;
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let intervalId = null;
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let workout = [];
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const integerNumber = (num) => parseInt(num);
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const decimalNumber = (num) => parseFloat(num.toFixed(1));
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// Update RPM and Power
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function updateRpm(rpm) {
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rpmDisplay.textContent = integerNumber(rpm);
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}
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// Update Duration
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function updateDuration() {
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const now = new Date();
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const diff = Math.abs(now - startTime) / 1000; // get difference in seconds
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let hours = Math.floor(diff / (60 * 60));
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let minutes = Math.floor(diff / 60) % 60;
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let seconds = Math.floor(diff);
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let timeSegments = [];
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if (hours > 0) {
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timeSegments.push(hours);
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}
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timeSegments.push(minutes.toString().padStart(2, '0'));
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timeSegments.push(seconds.toString().padStart(2, '0'));
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durationDisplay.textContent = timeSegments.join(':'); // format as "1:32"
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}
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// Start workout
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function startWorkout() {
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// Connect to cadence sensor
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connect({
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onChange: parseCSC,
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}).then(() => {
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isRunning = true;
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startTime = Date.now();
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toggleButton.textContent = 'Stop';
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intervalId = setInterval(() => {
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updateDuration();
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}, 1000);
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})
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.catch((err) => {
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swal("Oops", err.message, "error");
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});
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}
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// Stop workout
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function stopWorkout() {
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isRunning = false;
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clearInterval(intervalId);
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toggleButton.textContent = 'Start';
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disconnect();
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fetch("{{ url_for('workouts', user_id=user.id) }}", {
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method: "POST",
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headers: {
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Accept: "application/json",
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"Content-Type": "application/json",
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},
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body: JSON.stringify({ workout: workout }),
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}).then(res => res.json())
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.then(res => swal("Submitted", JSON.stringify(res), "success").then(isConfirm => window.location.href = '/'))
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.catch(err => swal("Failed to submit workout", err.message, "error"));
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workout = [];
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}
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// Toggle workout
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function toggleWorkout() {
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if (isRunning) {
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stopWorkout();
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} else {
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startWorkout();
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}
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}
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// Attach event listener to toggle button
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toggleButton.addEventListener('click', toggleWorkout);
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// Set up the live plot
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const svg = d3.select('#graph');
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// Set the SVG viewBox and dimensions
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svg.attr('viewBox', '0 0 600 400');
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svg.attr('width', '100%');
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svg.attr('height', '100%');
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// Set up the x-axis and y-axis scales
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const xScale = d3.scaleLinear().range([50, 550]);
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const yScale = d3.scaleLinear().range([350, 50]);
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// Set up the x-axis and y-axis
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const xAxis = d3.axisBottom(xScale).tickSize(0).tickFormat('');
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const yAxis = d3.axisLeft(yScale).tickSize(0).tickFormat('');
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// Add the x-axis and y-axis to the SVG
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svg.append('g')
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.attr('transform', 'translate(0, 350)')
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.call(xAxis);
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svg.append('g')
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.attr('transform', 'translate(50, 0)')
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.call(yAxis);
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// Set up the line function
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const line = d3.line()
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.x((d) => xScale(d.x))
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.y((d) => yScale(d.y))
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.curve(d3.curveCardinal.tension(0.25));
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// Create an empty data array
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let data = [];
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// Set up the graph update function
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const updateGraph = () => {
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// Update the x-axis and y-axis scales
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xScale.domain([0, data.length]);
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yScale.domain([0, d3.max(data, d => d.y)]);
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// Remove the old line path from the SVG
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svg.selectAll('path').remove();
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// Add a new line path to the SVG with the updated data
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svg.append('path')
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.datum(data)
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.attr('d', line)
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.attr('fill', 'none')
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.attr('stroke', 'blue')
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.attr('stroke-width', '2');
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};
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// Call the updateGraph function to start the live updates
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updateGraph();
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// BLE code
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let characteristic = null;
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let prevRes = null;
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function delay(ms) {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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async function connect(props) {
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const device = await navigator.bluetooth.requestDevice({
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filters: [{ services: ["cycling_speed_and_cadence"] }],
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acceptAllDevices: false,
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});
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console.log(`%c\n👩🏼⚕️`, "font-size: 82px;", "Starting CSC...\n\n");
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const server = await device.gatt.connect();
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await delay(500);
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console.log("Getting Service...");
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const service = await server.getPrimaryService("cycling_speed_and_cadence");
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console.log("Getting Characteristic...");
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characteristic = await service.getCharacteristic("csc_measurement");
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await characteristic.startNotifications();
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console.log("> Notifications started");
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characteristic.addEventListener("characteristicvaluechanged", props.onChange);
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console.log("> Characteristic value changed event listener added");
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}
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async function disconnect() {
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if (characteristic) {
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try {
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await characteristic.stopNotifications();
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log("> Notifications stopped");
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characteristic.removeEventListener(
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"characteristicvaluechanged",
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handleNotifications
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);
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} catch (error) {
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console.log("Argh! " + error);
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swal("Oops", error, "error");
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}
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}
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}
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function parseCSC(e) {
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const value = e.target.value;
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const flags = value.getUint8(0, true);
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const hasWheel = !!(flags & 0x01);
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const hasCrank = !!(flags & 0x02);
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let index = 1;
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const res = {
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wheelRevs: null,
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wheelTime: null,
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crankRevs: null,
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crankTime: null,
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};
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if (hasWheel) {
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res.wheelRevs = value.getUint32(index, true);
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index += 4;
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res.wheelTime = value.getUint16(index, true);
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index += 2;
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}
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if (hasCrank) {
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res.crankRevs = value.getUint16(index, true);
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index += 2;
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res.crankTime = value.getUint16(index, true);
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index += 2;
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}
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console.log("CSC", res);
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if (prevRes) {
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let rpm = revsToRPM(prevRes, res);
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if (rpm > 0) {
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const newData = {
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x: data.length,
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y: decimalNumber(rpm),
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};
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// Add the new data point to the data array
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data.push(newData);
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updateRpm(rpm);
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updateGraph();
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workout.push({ rpm, timestamp: new Date() })
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}
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}
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prevRes = res;
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return res;
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}
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function revsToRPM(prevRes, res) {
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const deltaRevs = res.crankRevs - prevRes.crankRevs;
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if (deltaRevs === 0) {
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// no rotation
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return 0;
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}
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let deltaTime = (res.crankTime - prevRes.crankTime) / 1024;
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if (deltaTime < 0) {
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// time counter wraparound
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deltaTime += Math.pow(2, 16) / 1024;
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}
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deltaTime /= 60; // seconds to minutes
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const rpm = deltaRevs / deltaTime;
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return rpm;
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}
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</script>
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</body>
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</html> |