Add web visualizer based on python+plotly
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3
visualizer/.gitignore
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visualizer/.gitignore
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config.py
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__pycache__/
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env/
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62
visualizer/main.py
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visualizer/main.py
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#!/usr/bin/env python3
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from bottle import Bottle, request, response, template, static_file
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import serial
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import json
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import time
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app = application = Bottle()
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serial_in_use = False
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@app.route('/')
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@app.route('/index.html')
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def index():
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return template('index')
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@app.route('/websocket')
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def handle_websocket():
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global serial_in_use
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wsock = request.environ.get('wsgi.websocket')
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if not wsock:
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abort(400, 'Expected WebSocket request.')
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if serial_in_use:
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abort(503, 'Serial connection already in use.')
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with serial.Serial('/dev/ttyUSB0', 38400, timeout=10) as ser:
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#with open('/dev/null') as ser:
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serial_in_use = True
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print("Serial locked.")
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while True:
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try:
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line = ser.readline()
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#line = '{"vin": 1240, "vout": 15300, "iout": 817, "pout": 12345, "energy": 9387, "pwm": 314}\r\n'
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time.sleep(1)
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if line[0] != '{':
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# print all lines that are probably not JSON
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print(line)
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continue
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data = json.loads(line)
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wsock.send(json.dumps(data))
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except json.JSONDecodeError:
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print(f"Failed to decode line as JSON: »{line}«.")
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except WebSocketError:
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break
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serial_in_use = False
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print("Serial unlocked.")
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@app.route('/static/<filename:path>')
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def send_static(filename):
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return static_file(filename, root='./static')
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if __name__ == "__main__":
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from gevent.pywsgi import WSGIServer
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from geventwebsocket import WebSocketError
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from geventwebsocket.handler import WebSocketHandler
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server = WSGIServer(("0.0.0.0", 8080), app,
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handler_class=WebSocketHandler)
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server.serve_forever()
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4
visualizer/requirements.txt
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visualizer/requirements.txt
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bottle ~= 0.12.25
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gevent ~= 24.2.1
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gevent-websocket ~= 0.10.0
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pyserial ~= 3.5
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8
visualizer/static/plotly-2.29.1.min.js
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8
visualizer/static/plotly-2.29.1.min.js
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8
visualizer/static/style.css
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visualizer/static/style.css
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body {
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color: black;
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background-color: #e0e0e0;
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}
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div.plot {
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display: inline-block;
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}
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visualizer/views/index.tpl
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visualizer/views/index.tpl
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<script type="text/javascript" src="/static/plotly-2.29.1.min.js" charset="utf-8"></script>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<link rel="stylesheet" href="static/style.css">
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</head>
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<body>
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<div class="row">
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<div class="plot" id="plotly_pout"></div>
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<div class="plot" id="plotly_energy"></div>
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<div class="plot" id="plotly_pwm"></div>
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</div>
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<div class="row">
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<div class="plot" id="plotly_vin"></div>
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<div class="plot" id="plotly_vout"></div>
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<div class="plot" id="plotly_iout"></div>
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</div>
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<script type="text/javascript">
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/*********************************
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* Plot setup *
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*********************************/
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var plot_w = 400;
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var plot_h = 300;
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// vin plot
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 6.2,
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number: {"suffix": "V"},
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title: { text: "Eingangsspannung" },
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type: "indicator",
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mode: "gauge+number",
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gauge: {
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axis: { range: [0, 10] },
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bar: { color: "blue" }
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},
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_vin', plot_data, layout);
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 10,
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number: {"suffix": "V"},
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title: { text: "Ausgangsspannung" },
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type: "indicator",
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mode: "gauge+number",
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gauge: {
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axis: { range: [0, 20] },
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bar: { color: "yellow" },
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threshold: {
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line: { color: "green", width: 4 },
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thickness: 0.75,
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value: 12.0
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},
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steps: [
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{ range: [0, 16], color: "white" },
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{ range: [16, 20], color: "#ff8080" }
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],
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},
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_vout', plot_data, layout);
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 5,
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number: {"suffix": "W"},
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title: { text: "Leistung" },
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type: "indicator",
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mode: "gauge+number",
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gauge: {
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axis: { range: [0, 30] },
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bar: { color: "orange" },
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steps: [
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{ range: [0, 20], color: "white" },
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{ range: [20, 30], color: "#ff8080" }
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],
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},
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_pout', plot_data, layout);
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 0.7,
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number: {"suffix": "A"},
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title: { text: "Ausgangsstrom" },
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type: "indicator",
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mode: "gauge+number",
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gauge: {
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axis: { range: [0, 2] },
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bar: { color: "blue" }
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},
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_iout', plot_data, layout);
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 0.7,
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number: {"suffix": "J"},
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title: { text: "Energie" },
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type: "indicator",
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mode: "number"
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_energy', plot_data, layout);
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var plot_data = [
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{
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domain: { x: [0, 1], y: [0, 1] },
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value: 321,
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title: { text: "PWM" },
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type: "indicator",
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mode: "gauge+number",
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gauge: {
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axis: { range: [0, 486] },
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bar: { color: "black" }
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},
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}
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];
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var layout = { width: plot_w, height: plot_h, margin: { t: 0, b: 0 } };
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Plotly.newPlot('plotly_pwm', plot_data, layout);
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/*********************************
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* Websocket handling *
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*********************************/
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var ws = new WebSocket("ws://localhost:8080/websocket");
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ws.onopen = function() {
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console.log("Websocket connected.");
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};
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ws.onmessage = function (evt) {
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data = JSON.parse(evt.data);
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if(data) {
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console.log("Data received:");
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console.log(data);
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Plotly.restyle('plotly_vin', 'value', [data.vin / 1e3]); // millivolt
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Plotly.restyle('plotly_vout', 'value', [data.vout / 1e3]); // millivolt
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Plotly.restyle('plotly_pout', 'value', [data.pout / 1e6]); // microwatt
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Plotly.restyle('plotly_iout', 'value', [data.iout / 1000.0]); // milliampere
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Plotly.restyle('plotly_energy', 'value', [data.energy]); // Joule
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Plotly.restyle('plotly_pwm', 'value', [data.pwm]); // counter
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} else {
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console.log("Received data, but no valid JSON:");
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console.log(evt.data);
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}
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};
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</script>
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</body>
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</html>
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