rename init to app change camel case to snake case, added __name__ conditional

.eslintrc

@@ -0,0 +1,5 @@
+parserOptions:
+  ecmaVersion: 2019
+env:
+  browser: true
+  jquery: true

.gitignore

@@ -128,5 +128,5 @@ dmypy.json
 # Pyre type checker
 .pyre/
 
-# Include frontend libraries though
-!/frontend/lib
+# Include frontend ibraries though
+!terahz/templates/lib

.travis.yml

@@ -0,0 +1 @@
+language: python

Pipfile

@@ -0,0 +1,15 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+
+[packages]
+flask = "*"
+smbus2 = "*"
+pyserial = "*"
+pandas = "*"
+
+[requires]
+python_version = "3.8"

Pipfile.lock

@@ -0,0 +1,184 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "7fb3ae0afbe0d0c2af92f618aa1c54442566daeb561480eee2c2a299f1c2bee7"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3.8"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "click": {
+            "hashes": [
+                "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a",
+                "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"
+            ],
+            "version": "==7.1.2"
+        },
+        "flask": {
+            "hashes": [
+                "sha256:4efa1ae2d7c9865af48986de8aeb8504bf32c7f3d6fdc9353d34b21f4b127060",
+                "sha256:8a4fdd8936eba2512e9c85df320a37e694c93945b33ef33c89946a340a238557"
+            ],
+            "index": "pypi",
+            "version": "==1.1.2"
+        },
+        "itsdangerous": {
+            "hashes": [
+                "sha256:321b033d07f2a4136d3ec762eac9f16a10ccd60f53c0c91af90217ace7ba1f19",
+                "sha256:b12271b2047cb23eeb98c8b5622e2e5c5e9abd9784a153e9d8ef9cb4dd09d749"
+            ],
+            "version": "==1.1.0"
+        },
+        "jinja2": {
+            "hashes": [
+                "sha256:89aab215427ef59c34ad58735269eb58b1a5808103067f7bb9d5836c651b3bb0",
+                "sha256:f0a4641d3cf955324a89c04f3d94663aa4d638abe8f733ecd3582848e1c37035"
+            ],
+            "version": "==2.11.2"
+        },
+        "markupsafe": {
+            "hashes": [
+                "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473",
+                "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
+                "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
+                "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
+                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
+                "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff",
+                "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b",
+                "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
+                "sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e",
+                "sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183",
+                "sha256:535f6fc4d397c1563d08b88e485c3496cf5784e927af890fb3c3aac7f933ec66",
+                "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b",
+                "sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1",
+                "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15",
+                "sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1",
+                "sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e",
+                "sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b",
+                "sha256:7c1699dfe0cf8ff607dbdcc1e9b9af1755371f92a68f706051cc8c37d447c905",
+                "sha256:88e5fcfb52ee7b911e8bb6d6aa2fd21fbecc674eadd44118a9cc3863f938e735",
+                "sha256:8defac2f2ccd6805ebf65f5eeb132adcf2ab57aa11fdf4c0dd5169a004710e7d",
+                "sha256:98c7086708b163d425c67c7a91bad6e466bb99d797aa64f965e9d25c12111a5e",
+                "sha256:9add70b36c5666a2ed02b43b335fe19002ee5235efd4b8a89bfcf9005bebac0d",
+                "sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c",
+                "sha256:ade5e387d2ad0d7ebf59146cc00c8044acbd863725f887353a10df825fc8ae21",
+                "sha256:b00c1de48212e4cc9603895652c5c410df699856a2853135b3967591e4beebc2",
+                "sha256:b1282f8c00509d99fef04d8ba936b156d419be841854fe901d8ae224c59f0be5",
+                "sha256:b2051432115498d3562c084a49bba65d97cf251f5a331c64a12ee7e04dacc51b",
+                "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6",
+                "sha256:c8716a48d94b06bb3b2524c2b77e055fb313aeb4ea620c8dd03a105574ba704f",
+                "sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f",
+                "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2",
+                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7",
+                "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"
+            ],
+            "version": "==1.1.1"
+        },
+        "numpy": {
+            "hashes": [
+                "sha256:082f8d4dd69b6b688f64f509b91d482362124986d98dc7dc5f5e9f9b9c3bb983",
+                "sha256:1bc0145999e8cb8aed9d4e65dd8b139adf1919e521177f198529687dbf613065",
+                "sha256:309cbcfaa103fc9a33ec16d2d62569d541b79f828c382556ff072442226d1968",
+                "sha256:3673c8b2b29077f1b7b3a848794f8e11f401ba0b71c49fbd26fb40b71788b132",
+                "sha256:480fdd4dbda4dd6b638d3863da3be82873bba6d32d1fc12ea1b8486ac7b8d129",
+                "sha256:56ef7f56470c24bb67fb43dae442e946a6ce172f97c69f8d067ff8550cf782ff",
+                "sha256:5a936fd51049541d86ccdeef2833cc89a18e4d3808fe58a8abeb802665c5af93",
+                "sha256:5b6885c12784a27e957294b60f97e8b5b4174c7504665333c5e94fbf41ae5d6a",
+                "sha256:667c07063940e934287993366ad5f56766bc009017b4a0fe91dbd07960d0aba7",
+                "sha256:7ed448ff4eaffeb01094959b19cbaf998ecdee9ef9932381420d514e446601cd",
+                "sha256:8343bf67c72e09cfabfab55ad4a43ce3f6bf6e6ced7acf70f45ded9ebb425055",
+                "sha256:92feb989b47f83ebef246adabc7ff3b9a59ac30601c3f6819f8913458610bdcc",
+                "sha256:935c27ae2760c21cd7354402546f6be21d3d0c806fffe967f745d5f2de5005a7",
+                "sha256:aaf42a04b472d12515debc621c31cf16c215e332242e7a9f56403d814c744624",
+                "sha256:b12e639378c741add21fbffd16ba5ad25c0a1a17cf2b6fe4288feeb65144f35b",
+                "sha256:b1cca51512299841bf69add3b75361779962f9cee7d9ee3bb446d5982e925b69",
+                "sha256:b8456987b637232602ceb4d663cb34106f7eb780e247d51a260b84760fd8f491",
+                "sha256:b9792b0ac0130b277536ab8944e7b754c69560dac0415dd4b2dbd16b902c8954",
+                "sha256:c9591886fc9cbe5532d5df85cb8e0cc3b44ba8ce4367bd4cf1b93dc19713da72",
+                "sha256:cf1347450c0b7644ea142712619533553f02ef23f92f781312f6a3553d031fc7",
+                "sha256:de8b4a9b56255797cbddb93281ed92acbc510fb7b15df3f01bd28f46ebc4edae",
+                "sha256:e1b1dc0372f530f26a03578ac75d5e51b3868b9b76cd2facba4c9ee0eb252ab1",
+                "sha256:e45f8e981a0ab47103181773cc0a54e650b2aef8c7b6cd07405d0fa8d869444a",
+                "sha256:e4f6d3c53911a9d103d8ec9518190e52a8b945bab021745af4939cfc7c0d4a9e",
+                "sha256:ed8a311493cf5480a2ebc597d1e177231984c818a86875126cfd004241a73c3e",
+                "sha256:ef71a1d4fd4858596ae80ad1ec76404ad29701f8ca7cdcebc50300178db14dfc"
+            ],
+            "version": "==1.19.1"
+        },
+        "pandas": {
+            "hashes": [
+                "sha256:01b1e536eb960822c5e6b58357cad8c4b492a336f4a5630bf0b598566462a578",
+                "sha256:0246c67cbaaaac8d25fed8d4cf2d8897bd858f0e540e8528a75281cee9ac516d",
+                "sha256:0366150fe8ee37ef89a45d3093e05026b5f895e42bbce3902ce3b6427f1b8471",
+                "sha256:16ae070c47474008769fc443ac765ffd88c3506b4a82966e7a605592978896f9",
+                "sha256:1acc2bd7fc95e5408a4456897c2c2a1ae7c6acefe108d90479ab6d98d34fcc3d",
+                "sha256:391db82ebeb886143b96b9c6c6166686c9a272d00020e4e39ad63b792542d9e2",
+                "sha256:41675323d4fcdd15abde068607cad150dfe17f7d32290ee128e5fea98442bd09",
+                "sha256:53328284a7bb046e2e885fd1b8c078bd896d7fc4575b915d4936f54984a2ba67",
+                "sha256:57c5f6be49259cde8e6f71c2bf240a26b071569cabc04c751358495d09419e56",
+                "sha256:84c101d0f7bbf0d9f1be9a2f29f6fcc12415442558d067164e50a56edfb732b4",
+                "sha256:88930c74f69e97b17703600233c0eaf1f4f4dd10c14633d522724c5c1b963ec4",
+                "sha256:8c9ec12c480c4d915e23ee9c8a2d8eba8509986f35f307771045c1294a2e5b73",
+                "sha256:a81c4bf9c59010aa3efddbb6b9fc84a9b76dc0b4da2c2c2d50f06a9ef6ac0004",
+                "sha256:d9644ac996149b2a51325d48d77e25c911e01aa6d39dc1b64be679cd71f683ec",
+                "sha256:e4b6c98f45695799990da328e6fd7d6187be32752ed64c2f22326ad66762d179",
+                "sha256:fe6f1623376b616e03d51f0dd95afd862cf9a33c18cf55ce0ed4bbe1c4444391"
+            ],
+            "index": "pypi",
+            "version": "==1.1.1"
+        },
+        "pyserial": {
+            "hashes": [
+                "sha256:6e2d401fdee0eab996cf734e67773a0143b932772ca8b42451440cfed942c627",
+                "sha256:e0770fadba80c31013896c7e6ef703f72e7834965954a78e71a3049488d4d7d8"
+            ],
+            "index": "pypi",
+            "version": "==3.4"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c",
+                "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"
+            ],
+            "version": "==2.8.1"
+        },
+        "pytz": {
+            "hashes": [
+                "sha256:a494d53b6d39c3c6e44c3bec237336e14305e4f29bbf800b599253057fbb79ed",
+                "sha256:c35965d010ce31b23eeb663ed3cc8c906275d6be1a34393a1d73a41febf4a048"
+            ],
+            "version": "==2020.1"
+        },
+        "six": {
+            "hashes": [
+                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
+                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+            ],
+            "version": "==1.15.0"
+        },
+        "smbus2": {
+            "hashes": [
+                "sha256:210e66eebe4d0b1fe836b3ec2751841942e1c4918c0b429b20a0e20a222228b4"
+            ],
+            "index": "pypi",
+            "version": "==0.3.0"
+        },
+        "werkzeug": {
+            "hashes": [
+                "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43",
+                "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"
+            ],
+            "version": "==1.0.1"
+        }
+    },
+    "develop": {}
+}

README.md

@@ -1,23 +1,38 @@
-# TeraHz
-
 [![Documentation Status](https://readthedocs.org/projects/terahz/badge/?version=latest)](https://terahz.readthedocs.io/en/latest/?badge=latest)
+[![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg?style=flat-square)](https://github.com/standard/semistandard)
+# <img alt="TeraHz logo" src="docs/imgs/logo-sq.png" width="200px"> TeraHz
 
-TeraHz is a low-cost spectrometer based on a Raspberry Pi 3 or 3 B+ and three sensors:
- + [__AS7265x__](https://www.tindie.com/products/onehorse/compact-as7265x-spectrometer/)
- is a 18 channel spectrometer chipset that provides the device with spectral data
- + [__VEML6075__](https://www.sparkfun.com/products/15089) is an
- UVA/UVB sensor
- + [__APDS-9301__](https://www.sparkfun.com/products/14350) is a calibrated illuminance (lux) meter that provides the device with reliable readings
+*Za slovensko različico se odpravite na <http://git.sckr-lab.tk/kristjank/TeraHz>*
 
-## Why?
-Because people and institutions could use an affordable and accurate light-analysing device that is also portable, easy to use and simple to assemble. TeraHz was started as an answer to our high school not being able to afford a commercially available solution. One TeraHz spectrometer costs around 150$ in parts, which makes it a competitive alternative to other solutions on the market today.
+TeraHz is a low-cost portable spectrometer based on Raspberry Pi and a few
+commonly available sensor breakout boards. It's designed to bring low-cost
+scientific exploration of the light spectrum to educational institutions that
+cannot afford the options available on the current market. It costs less than
+200€ with money to spare and uses only free, libre and open-source software
+(FLOSS). It is free to use under the ISC license, a spiritual successor to the
+classic 3-clause BSD license.
+
+## How to install
+Stable releases are available under the releases tab and can be installed either
+by flashing a **preinstalled** ready to boot image with a stable version of
+TeraHz preinstalled or by flashing a **preconfigured** image of DietPi and
+installing TeraHz manually, which is useful if you want to test bleeding edge
+releases. For more information, check out the [Build
+guide](https://terahz.readthedocs.io/en/latest/build/).
+
+## Docs
+TeraHz usually works out of the box. A wireless network named `TeraHz_XXXXXX`
+(XXXXXX = the last half of the MAC address) will appear. Password is
+`terahertz`. After connection, open a web browser and visit `terahz.site`.
+The UI will appear. To fetch data from the sensors, press the 'Get Data' button.
+The readings are then plotted and written into the tables below the graph.
+
+More documentation is available at <https://terahz.readthedocs.io>
 
 ## Development team
-Copyright 2018, 2019
+- Kristjan Komloši (cls-02) - Project leader and main programmer
+- Jakob Kosec (D3m1j4ck) - Frontend designer
+- Juš Dolžan (ANormalPerson) - Math double-checker
 
-- Kristjan "cls-02" Komloši (electronics, sensor drivers, backend)
-- Jakob "D3m1j4ck" Kosec (frontend)
-
-
-I would also like to thank Juš "ANormalPerson" Dolžan, who decided to leave the
-team, but helped me a lot with backend development.
+<img alt="TeraHz logo" src="http://www.sckr.si/documents/upload/konektor/logo/_SC.gif" width="200px">  
+TeraHz has been developed under guidance and financial support of Šolski Center Kranj (Kranj School Centre). Without their support, this project might have never been possible.

backend/app.py

@@ -1,17 +0,0 @@
-# app.py - main backend program
-'''Main TeraHz backend program'''
-# All code in this file is licensed under the ISC license, provided in LICENSE.txt
-from flask import Flask
-import flask
-import sensors
-
-app = Flask(__name__)
-@app.route('/data')
-def sendData():
-    '''Responder function for /data route'''
-    s = sensors.Spectrometer(path='/dev/serial0', baudrate=115200, tout=1)
-    u = sensors.UVSensor()
-    l = sensors.LxMeter()
-    response = flask.jsonify([s.getData(), l.getData(), u.getABI()])
-    response.headers.add('Access-Control-Allow-Origin', '*')
-    return response

backend/run.sh

@@ -1,4 +0,0 @@
-#!/bin/bash
-# run.sh - run the backend server
-cd `dirname $0`
-sudo gunicorn app:app -b 0.0.0.0:5000 &

backend/storage.py

@@ -1,37 +0,0 @@
-# storage.py - storage backend for TeraHz
-'''TeraHz storage backend'''
-# Copyright Kristjan Komloši 2019
-# All code in this file is licensed under the ISC license,
-# provided in LICENSE.txt
-
-
-import sqlite3
-class jsonStorage:
-    '''Class for simple sqlite3 database of JSON entries'''
-    def __init__(self, dbFile):
-        '''Storage object constructor. Argument is filename'''
-        self.db = sqlite3.connect(dbFile)
-
-    def listJSONs(self):
-        '''Returns a list of all existing entries.'''
-        c = self.db.cursor()
-        c.execute('SELECT * FROM storage')
-        result = c.fetchall()
-        c.close()
-        return result
-
-    def storeJSON(self, jsonString, comment):
-        '''Stores a JSON entry along with a timestamp and a comment.'''
-        c = self.db.cursor()
-        c.execute(('INSERT INTO storage VALUES (datetime'
-                   '(\'now\', \'localtime\'), ?, ?)'), (comment, jsonString))
-        c.close()
-        self.db.commit()
-
-    def retrieveJSON(self, timestamp):
-        '''Retrieves a JSON entry. Takes a timestamp string'''
-        c = self.db.cursor()
-        c.execute('SELECT * FROM storage WHERE timestamp = ?', (timestamp,))
-        result = c.fetchall()
-        c.close()
-        return result

backend/terahz.fcgi

@@ -1,7 +0,0 @@
-#!/usr/bin/python3
-# Minimal flup configuration for Flask
-from flup.server.fcgi import WSGIServer
-from app import app
-
-if __name__ == '__main__':
-    WSGIServer(app, bindAddress='/var/www/api/terahz.sock').run()

docs/dev-guide.md

@@ -7,17 +7,12 @@ TeraHz was developed on and for the Raspberry Pi 3 Model B+. Compatibility with
 other Raspberries can probably be achieved by tweaking the device paths in the
 `app.py` file, but isn't confirmed at this point. Theoretically, 3 Model B and
 Zero W should work out of the box, but models without Wi-Fi will need an
-external Wi-Fi adapter if Wi-Fi functionality is desired. The practicality of
-compiling Python on the first generation of Raspberry Pis is also very
-questionable.
+external Wi-Fi adapter if Wi-Fi functionality is desired.
 
-Sensors required for operation are:
-- AS7265x
-- VEML6075
-- APDS-9301
-
-They provide the spectrometry data, UV data and illuminance data, respectively.
-They all support I2C, AS7265x supports UART in addition.
+TeraHz depends on three separate sensor boards:
+- AS7265x spectral chipset
+- VEML6075 UV sensor
+- APDS-9301 lux-meter
 
 The sensors leech power from the GPIO connector, thus eliminating the need for a
 separate power supply. The necessary power for the whole system is delivered through

etcs/dnsmasq.conf

@@ -1,3 +0,0 @@
-interface=wlan0
-	dhcp-range=192.168.1.10,192.168.1.100,255.255.255.0,24h
-	address=/terahz.site/192.168.1.1

etcs/hostapd/edit_ssid.sh

@@ -1,6 +0,0 @@
-#!/bin/bash
-# edit_ssid.sh - edits hostapd.conf and sets a MAC address-based SSID
-cd `dirname $0`
-ssid=`ip link | awk '/wlan0/ {getline; print $2}' | awk -v FS=':' '{printf("TeraHz_%s%s%s\n", $4, $5, $6)}'`
-sed "/ssid=.*/s/ssid=.*/ssid=$ssid/" hostapd.conf > newconf
-mv newconf hostapd.conf

etcs/hostapd/hostapd.conf

@@ -1,9 +0,0 @@
-interface=wlan0
-hw_mode=g
-channel=8
-wpa=2
-wpa_key_mgmt=WPA-PSK
-wpa_pairwise=TKIP
-rsn_pairwise=CCMP
-ssid=TeraHz
-wpa_passphrase=terahertz

etcs/install.sh

@@ -1,20 +0,0 @@
-# install.sh - install TeraHz onto a Raspbian or DietPi installation
-cd `dirname $0`
-
-apt -y update
-apt -y full-upgrade
-apt install -y python3 python3-pip lighttpd dnsmasq hostapd libatlas-base-dev
-pip3 install numpy pandas flask smbus2 pyserial gunicorn
-
-cp -R hostapd/ /etc
-chmod +rx /etc/hostapd/edit_ssid.sh
-cp dnsmasq.conf /etc
-cp rc.local /etc
-cp interfaces-terahz /etc/network/interfaces.d/
-
-cp -R ../frontend/* /var/www/html
-mkdir -p /usr/local/lib/terahz
-cp -R ../backend/* /usr/local/lib/terahz
-
-systemctl unmask dnsmasq hostapd lighttpd
-systemctl enable dnsmasq hostapd lighttpd

etcs/interfaces-terahz

@@ -1,3 +0,0 @@
-iface wlan0 inet static
-  address 192.168.1.1
-  netmask 255.255.255.0

etcs/lighttpd/lighttpd.conf

@@ -1,27 +0,0 @@
-server.modules = (
-	"mod_access",
-	"mod_alias",
-	"mod_compress",
- 	"mod_redirect"
-)
-
-server.document-root        = "/var/www/html"
-server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
-server.errorlog             = "/var/log/lighttpd/error.log"
-server.pid-file             = "/var/run/lighttpd.pid"
-server.username             = "www-data"
-server.groupname            = "www-data"
-server.port                 = 80
-
-
-index-file.names            = ( "index.php", "index.html", "index.lighttpd.html" )
-url.access-deny             = ( "~", ".inc" )
-static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )
-
-compress.cache-dir          = "/var/cache/lighttpd/compress/"
-compress.filetype           = ( "application/javascript", "text/css", "text/html", "text/plain" )
-
-# default listening port for IPv6 falls back to the IPv4 port
-include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
-include_shell "/usr/share/lighttpd/create-mime.assign.pl"
-include_shell "/usr/share/lighttpd/include-conf-enabled.pl"

etcs/rc.local

@@ -1,16 +0,0 @@
-#!/bin/sh -e
-#
-# rc.local
-#
-# This script is executed at the end of each multiuser runlevel.
-# Make sure that the script will "exit 0" on success or any other
-# value on error.
-#
-# In order to enable or disable this script just change the execution
-# bits.
-#
-# By default this script does nothing.
-/etc/hostapd/edit_ssid.sh &
-/usr/local/lib/terahz/run.sh &
-sleep 3
-service hostapd restart # restart hostapd to prevent a weird startup race condition

frontend/frontend.js

@@ -1,46 +0,0 @@
-// All code in this file is licensed under the ISC license, provided in LICENSE.txt
-$('#update').click(function () {
-  updateData();
-});
-// jQuery event binder
-
-function updateData () {
-  const url = 'http://' + window.location.hostname + ':5000/data';
-  $.ajax({ // spawn an AJAX request
-    url: url,
-    success: function (data, status) {
-      console.log(data);
-      graphSpectralData(data[0], 0);
-      fillTableData(data);
-    },
-    timeout: 2500 // this should be a pretty sane timeout
-  });
-}
-
-function graphSpectralData (obj, dom) {
-  // graph spectral data in obj into dom
-  var graphPoints = [];
-  var graphXTicks = [];
-
-  Object.keys(obj).forEach((element, index) => {
-    graphPoints.push([index, obj[element]]); // build array of points
-    graphXTicks.push([index, element]); // build array of axis labels
-  });
-  // console.log(graphPoints);
-  const options = {
-    grid: {color: 'white'},
-    xaxis: {ticks: graphXTicks}
-  };
-  $.plot('#graph', [graphPoints], options);
-  // flot expects an array of arrays (lines) of 2-element arrays (points)
-}
-
-function fillTableData (obj) {
-  // fill the obj data into HTML tables
-  Object.keys(obj[0])
-    .forEach((element) => { $('#' + element).text(obj[0][element]); });
-  $('#lx').text(obj[1]);
-  $('#uva').text(obj[2][0]);
-  $('#uvb').text(obj[2][1]);
-  $('#uvi').text(obj[2][2]);
-}

frontend/index.html

@@ -1,162 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="utf8">
-  <link rel="stylesheet" href="lib/bootstrap.min.css">
-  <link rel="stylesheet" href="stylesheet.css">
-  <title>TeraHz</title>
-</head>
-
-<body>
-  <div class="container text-center">
-    <h1><img src="lib/logo-sq.png" height="64px">TeraHz</h1>
-
-  </div>
-  <div class="container">
-    <button id="update" class="btn btn-primary m-1 float-right">Get data</button>
-    <p id="debug">
-    </p>
-    <h3>Spectrogram</h3>
-    <div id="graph" style="height:480px;width:720px"></div>
-    <h3>Spectral readings</h3>
-    <table class="table table-dark table-sm" id="specter">
-      <thead class="thead-dark">
-        <tr>
-          <th>Band</th>
-          <th>Wavelength [nm]</th>
-          <th>Irradiance [μW/cm²]</th>
-        </tr>
-      </thead>
-      <tr>
-        <td>A</td>
-        <td>410 nm</td>
-        <td id="A">---</td>
-      </tr>
-      <tr>
-        <td>B</td>
-        <td>435 nm</td>
-        <td id="B">---</td>
-      </tr>
-      <tr>
-        <td>C</td>
-        <td>460 nm</td>
-        <td id="C">---</td>
-      </tr>
-      <tr>
-        <td>D</td>
-        <td>485 nm</td>
-        <td id="D">---</td>
-      </tr>
-      <tr>
-        <td>E</td>
-        <td>510 nm</td>
-        <td id="E">---</td>
-      </tr>
-      <tr>
-        <td>F</td>
-        <td>535 nm</td>
-        <td id="F">---</td>
-      </tr>
-      <tr>
-        <td>G</td>
-        <td>560 nm</td>
-        <td id="G">---</td>
-      </tr>
-      <tr>
-        <td>H</td>
-        <td>585 nm</td>
-        <td id="H">---</td>
-      </tr>
-      <tr>
-        <td>R</td>
-        <td>610 nm</td>
-        <td id="R">---</td>
-      </tr>
-      <tr>
-        <td>I</td>
-        <td>645 nm</td>
-        <td id="I">---</td>
-      </tr>
-      <tr>
-        <td>S</td>
-        <td>680 nm</td>
-        <td id="S">---</td>
-      </tr>
-      <tr>
-        <td>J</td>
-        <td>705 nm</td>
-        <td id="J">---</td>
-      </tr>
-      <tr>
-        <td>T</td>
-        <td>730 nm</td>
-        <td id="T">---</td>
-      </tr>
-      <tr>
-        <td>U</td>
-        <td>760 nm</td>
-        <td id="U">---</td>
-      </tr>
-      <tr class="table-secondary">
-        <td>V</td>
-        <td>810 nm</td>
-        <td id="V">---</td>
-      </tr>
-      <tr class="table-secondary">
-        <td>W</td>
-        <td>860 nm</td>
-        <td id="W">---</td>
-      </tr>
-      <tr class="table-secondary">
-        <td>K</td>
-        <td>900 nm</td>
-        <td id="K">---</td>
-      </tr>
-      <tr class="table-secondary">
-        <td>L</td>
-        <td>940 nm</td>
-        <td id="L">---</td>
-      </tr>
-    </table>
-    <br>
-    <h3>Lux and UV readings</h3>
-    <table class="table-dark table" id="luxuv">
-      <thead class="thead-dark">
-        <tr>
-          <th>Parameter</th>
-          <th>Value</th>
-        </tr>
-      </thead>
-      <tr>
-        <td>Illuminance [lx]</td>
-        <td id="lx">---</td>
-      </tr>
-      <tr>
-        <td>UVA irradiance [μW/cm²]</td>
-        <td id="uva">---</td>
-      </tr>
-      <tr>
-        <td>UVB irradiance [μW/cm²]</td>
-        <td id="uvb">---</td>
-      </tr>
-      <tr>
-        <td>UVA/UVB average [μW/cm²]</td>
-        <td id="uvi">---</td>
-      </tr>
-    </table>
-  </div>
-  <script src="lib/bootstrap.bundle.min.js"></script>
-  <script src="lib/jquery-3.4.1.min.js"></script>
-  <script src="lib/flot/jquery.flot.js"></script>
-  <script src="frontend.js"></script>
-  <script src="lib/flot/jquery.canvaswrapper.js"></script>
-  <script src="lib/flot/jquery.colorhelpers.js"></script>
-  <script src="lib/flot/jquery.flot.js"></script>
-  <script src="lib/flot/jquery.flot.saturated.js"></script>
-  <script src="lib/flot/jquery.flot.browser.js"></script>
-  <script src="lib/flot/jquery.flot.drawSeries.js"></script>
-  <script src="lib/flot/jquery.flot.uiConstants.js"></script>
-</body>
-
-</html>

setup.py

@@ -0,0 +1,22 @@
+import setuptools
+
+with open("README.md", "r") as fh:
+    long_description = fh.read()
+
+setuptools.setup(
+    name="terahz", # Replace with your own username
+    version="1.0.0",
+    author="Kristjan Komloši",
+    author_email="kristjan.komlosi@gmail.com",
+    description="Low cost spectrometry webapp",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
+    url="https://github.com/cls-02/TeraHz",
+    packages=setuptools.find_packages(),
+    classifiers=[
+        "Programming Language :: Python :: 3",
+        "License :: OSI Approved :: MIT License",
+        "Operating System :: OS Independent",
+    ],
+    python_requires='>=3.6',
+    )

terahz/app.py

@@ -0,0 +1,46 @@
+# app.py - main backend program
+'''Main TeraHz backend program'''
+# All code in this file is licensed under the ISC license, provided in LICENSE.txt
+from flask import Flask, jsonify, render_template
+from . import terahz
+
+def start_flaskapp():
+    '''Initialize global variables'''
+    global app, s, u, l
+    app = Flask(__name__)
+    s = terahz.Spectrometer(path='/dev/serial0')
+    u = terahz.UVSensor()
+    l = terahz.LxMeter()
+
+@app.route('/data')
+def sendData():
+    '''Responder function for /data route'''
+    response = jsonify([s.getData(), l.getData(), u.getABI()])
+    response.headers.add('Access-Control-Allow-Origin', '*')
+    return response
+
+
+@app.route('/')
+def renderTable():
+    ''''Main page renderer'''
+    wavelengthDict = {
+        'A': '410 nm',
+        'B': '435 nm',
+        'C': '460 nm',
+        'D': '485 nm',
+        'E': '510 nm',
+        'F': '535 nm',
+        'G': '560 nm',
+        'H': '585 nm',
+        'R': '610 nm',
+        'I': '645 nm',
+        'S': '680 nm',
+        'J': '705 nm',
+        'T': '730 nm',
+        'U': '760 nm',
+        'V': '810 nm',
+        'W': '860 nm',
+        'K': '900 nm',
+        'L': '940 nm'}
+    data = [s.getData(), l.getData(), u.getABI()]
+    return render_template('index.html', data=data, wavelengths=wavelengthDict)

terahz/static/frontend.js

@@ -0,0 +1,42 @@
+// All code in this file is licensed under the ISC license, provided in LICENSE.txt
+$('#update').click(updateData);
+// jQuery event binder
+
+function updateData () {
+const url = '/data';
+  $.get(url, (data, status) => {
+    if (status === '200') {
+      graphSpectralData(data[0], 0);
+      fillTableData(data);
+    } else alert('Data request failed, please refresh page.');
+  });
+}
+
+function graphSpectralData (obj, dom) {
+  // graph spectral data in obj into dom
+  var graphPoints = [];
+  var graphXTicks = [];
+  const spectrum = 'ABCDEFGHRISJTUVWKL';
+
+  for (var i = 0; i < spectrum.length; i++) {
+    graphPoints.push([i, obj[spectrum[i]]]);
+    graphXTicks.push([i, spectrum[i]]);
+  }
+
+  const options = {
+    grid: { color: 'white' },
+    xaxis: { ticks: graphXTicks }
+  };
+  $.plot('#graph', [graphPoints], options);
+  // flot expects an array of arrays (lines) of 2-element arrays (points)
+}
+
+function fillTableData (obj) {
+  // fill the obj data into HTML tables
+  Object.keys(obj[0]).forEach((element) =>
+  { $('#' + element + '_value').text(obj[0][element]); });
+  $('#lx').text(obj[1]);
+  $('#uva').text(obj[2][0]);
+  $('#uvb').text(obj[2][1]);
+  $('#uvi').text(obj[2][2]);
+}

terahz/templates/index.html

@@ -0,0 +1,98 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset="utf8">
+    <link rel="stylesheet" href="static/bootstrap.min.css">
+    <link rel="stylesheet" href="static/stylesheet.css">
+    <title>TeraHz</title>
+    <!-- script imports -->
+    <script src="static/bootstrap.bundle.min.js"></script>
+    <script src="static/jquery-3.4.1.min.js"></script>
+    <script src="static/flot/jquery.flot.js"></script>
+    <script src="static/frontend.js"></script>
+    <script src="static/flot/jquery.canvaswrapper.js"></script>
+    <script src="static/flot/jquery.colorhelpers.js"></script>
+    <script src="static/flot/jquery.flot.js"></script>
+    <script src="static/flot/jquery.flot.saturated.js"></script>
+    <script src="static/flot/jquery.flot.browser.js"></script>
+    <script src="static/flot/jquery.flot.drawSeries.js"></script>
+    <script src="static/flot/jquery.flot.uiConstants.js"></script>
+</head>
+
+<body>
+    <div class="container text-center">
+        <h1><img src="static/logo-sq.png" height="64px">TeraHz</h1>
+    </div>
+
+    <div class="container">
+        <button id="update" onclick="updateData()" class="btn btn-primary">Get data</button>
+        <button id="download" class="btn btn-primary">Download</button>
+        <button id="debug" class="btn btn-danger">DEBUG</button>
+    </div>
+
+    <div class="container">
+        <div class="row">
+            <div class="col-sm">
+                <h4>Spectrogram</h4>
+                <div id="graph" style="height:480px;width:720px"></div>
+            </div>
+
+            <div class="col-sm">
+                <h4>Visible+IR spectrum</h4>
+                <table class="table table-dark table-sm" id="specter">
+                    <thead class="thead-dark">
+                        <tr>
+                            <th>Band</th>
+                            <th>Wavelength [nm]</th>
+                            <th>Irradiance [μW/cm²]</th>
+                        </tr>
+                    </thead>
+                    {% for band, irr in data[0] %}
+                    <tr id="{{band}}">
+                        <td>
+                            {{band}}
+                        </td>
+                        <td>
+                            {{wld[band]}}
+                        </td>
+                        <td id="{{band}}_value">
+                            {{irr}}
+                        </td>
+                    </tr>
+                    {% endfor %}
+                </table>
+            </div>
+
+            <div class="col-sm">
+                <h4>UV+Illuminance</h4>
+                <table class="table-dark table table-sm" id="luxuv">
+                    <thead class="thead-dark">
+                        <tr>
+                            <th>Parameter</th>
+                            <th>Value</th>
+                        </tr>
+                    </thead>
+                    <tr>
+                        <td>Illuminance [lx]</td>
+                        <td id="lx">{{data[1]}}</td>
+                    </tr>
+                    <tr>
+                        <td>UVA irradiance [μW/cm²]</td>
+                        <td id="uva">{{data[2][0]}}</td>
+                    </tr>
+                    <tr>
+                        <td>UVB irradiance [μW/cm²]</td>
+                        <td id="uvb">{{data[2][1]}}</td>
+                    </tr>
+                    <tr>
+                        <td>UVA/UVB average [μW/cm²]</td>
+                        <td id="uvi">{{data[2][2]}}</td>
+                    </tr>
+                </table>
+            </div>
+        </div>
+    </div>
+</body>
+
+</html>

terahz/terahz.py

@@ -1,6 +1,6 @@
-# sensors.py - a module for interfacing to the sensors
+# terahz.py - a module for interfacing to the sensors
 '''Module for interfacing with TeraHz sensors'''
-# Copyright 2019 Kristjan Komloši
+# Copyright 2019, 2020 Kristjan Komloši
 # All code in this file is licensed under the ISC license, provided in LICENSE.txt
 import serial as ser
 import pandas as pd
@@ -8,6 +8,7 @@ import smbus2
 
 class Spectrometer:
     '''Class representing the AS7265X specrometer'''
+
     def initializeSensor(self):
         '''confirm the sensor is responding and proceed\
          with spectrometer initialization'''
@@ -23,8 +24,7 @@ class Spectrometer:
             if rstring == 'ERROR':
                 raise Exception  # sensor is in error state
         except:
-            raise Exception(
-                'An exception ocurred when performing spectrometer handshake')
+            raise Exception('No AT command response')
 
     def setParameters(self, parameters):
         '''applies the parameters like LED light and gain to the spectrometer'''
@@ -53,8 +53,7 @@ class Spectrometer:
                 self.serialObject.write('ATLED3={}\n'.format(led).encode())
                 self.serialObject.readline()
         except:
-            raise Exception(
-                'An exception occured during spectrometer initialization')
+            raise Exception('Error setting spectrometer parameters')
 
     def getData(self):
         '''Returns spectral data in a pandas DataFrame.'''
@@ -62,11 +61,10 @@ class Spectrometer:
             self.serialObject.write(b'ATCDATA\n')
             rawresp = self.serialObject.readline().decode()
         except:
-            raise Exception(
-                'An exception occurred when polling for spectrometer data')
+            raise Exception('Error polling spectrometer data')
         else:
-            responseorder = [i for i in 'RSTUVWGHIJKLABCDEF']
-            realorder = [i for i in 'ABCDEFGHRISJTUVWKL']
+            responseorder = list('RSTUVWGHIJKLABCDEF')
+            realorder = list('ABCDEFGHRISJTUVWKL')
             response = pd.Series(
                 [float(i) / 35.0 for i in rawresp[:-3].split(',')], index=responseorder)
             return pd.DataFrame(response, index=realorder, columns=['uW/cm^2']).to_dict()['uW/cm^2']
@@ -78,14 +76,14 @@ class Spectrometer:
         try:
             self.serialObject = ser.Serial(path, baudrate, timeout=tout)
         except:
-            raise Exception(
-                'An exception occured when opening the serial port at {}'.format(path))
+            raise Exception('Error opening serial port: {}'.format(path))
         else:
             self.initializeSensor()
 
 
 class LxMeter:
     '''Class representing the APDS-9301 digital photometer.'''
+
     def __init__(self, busNumber=1, addr=0x39):
         self.addr = addr
         try:
@@ -93,14 +91,14 @@ class LxMeter:
             self.bus = smbus2.SMBus(busNumber)
         except:
             raise Exception(
-                'An exception occured opening the SMBus {}'.format(self.bus))
+                'Error opening SMBus {}'.format(self.bus))
 
         try:
             self.bus.write_byte_data(
                 self.addr, 0xa0, 0x03)  # enable the sensor
             self.setGain(16)
         except:
-            raise Exception('An exception occured when enabling lux meter')
+            raise Exception('Error enabling lux meter')
 
     def setGain(self, gain):
         '''Set the sensor gain. Either 1 or 16.'''
@@ -109,15 +107,13 @@ class LxMeter:
                 temp = self.bus.read_byte_data(self.addr, 0xa1)
                 self.bus.write_byte_data(self.addr, 0xa1, 0xef & temp)
             except:
-                raise Exception(
-                    'An exception occured when setting lux meter gain')
+                raise Exception('Error setting lux meter gain')
         if gain == 16:
             try:
                 temp = self.bus.read_byte_data(self.addr, 0xa1)
                 self.bus.write_byte_data(self.addr, 0xa1, 0x10 | temp)
             except:
-                raise Exception(
-                    'An exception occured when setting lux meter gain')
+                raise Exception('Error setting lux meter gain')
         else:
             raise Exception('Invalid gain')
 
@@ -160,7 +156,7 @@ class LxMeter:
         except:
             raise Exception('An exception occured fetching lux channels')
 
-        # scary computations ahead! refer to the apds-9301 datasheet!
+        # Refer to APDS-9301 datasheet!
         if chB / chA <= 0.5 and chB / chA > 0:
             lux = 0.0304 * chA - 0.062 * chA * (chB / chA)**1.4
         elif chB / chA <= 0.61 and chB / chA > 0.5:
@@ -176,6 +172,7 @@ class LxMeter:
 
 class UVSensor:
     '''Class representing VEML6075 UVA/B meter'''
+
     def __init__(self, bus=1, addr=0x10):
         self.addr = addr
         try:
@@ -187,9 +184,16 @@ class UVSensor:
         try:
             # enable the sensor and set the integration time
             self.bus.write_byte_data(self.addr, 0x00, 0b00010000)
+
+            # trigger a measurement to prevent bus errors at first read
+            self.bus.write_byte_data(self.addr, 0x00, 0b00010010)  # UV_AF=1
+            self.bus.write_byte_data(self.addr, 0x00, 0b00010110)  # UV_TRIG=1
+            self.bus.write_byte_data(
+                self.addr, 0x00, 0b00010000)  # normal mode
+
         except:
             raise Exception(
-                'An exception occured when initalizing the UV Sensor')
+                'Error initalizing the UV Sensor')
 
     def getABI(self):
         '''Calculates the UVA and UVB irradiances,
@@ -202,40 +206,16 @@ class UVSensor:
             c1 = self.bus.read_word_data(self.addr, 0x0a)
             c2 = self.bus.read_word_data(self.addr, 0x0b)
         except:
-            raise Exception('An exception occured when fetching raw UV data')
-        # scary computations ahead! refer to Vishay app note 84339 and Sparkfun
-        # VEML6075 documentation.
-
-        # compensate for visible and IR noise
-        aCorr = aRaw - 2.22 * c1 - 1.33 * c2
-        bCorr = bRaw - 2.95 * c1 - 1.74 * c2
-
-        # convert values into irradiances
-        a = aCorr * 1.06
-        b = bCorr * 0.48
-
-        # zero out negative results (readings with no uv)
-        if a < 0:
-            a = 0
-        if b < 0:
-            b = 0
-        # last, calculate the UV index
-        i = (a + b) / 2
+            raise Exception('Error fetching raw UV data')
+        # Refer to Vishay app note 84339 and Sparkfun VEML6075 documentation.
+        # The computed values may be negative if UV is vastly weaker than
+        # visible and IR light. This is not a bug!
 
+        a = (aRaw - 2.22 * c1 - 1.33 * c2) * 1.06
+        b = (bRaw - 2.95 * c1 - 1.74 * c2) * 0.48
+        i = (a + b) / 2  # calculate UV index
         return [a, b, i]
 
-    def getA(self):
-        '''Returns UVA value. A getABI() wrapper.'''
-        return self.getABI()[0]
-
-    def getB(self):
-        '''Returns UVB value. A getABI() wrapper.'''
-        return self.getABI()[1]
-
-    def getI(self):
-        '''Returns UV index. A getABI() wrapper.'''
-        return self.getABI()[2]
-
     def on(self):
         '''Turns the UV sensor on after shutdown.'''
         try:
@@ -244,7 +224,7 @@ class UVSensor:
             self.bus.write_byte_data(self.addr, 0x00, 0x10)
         except:
             raise Exception(
-                'An exception occured when turning the UV sensor on')
+                'Error turning the UV sensor on')
 
     def off(self):
         '''Shuts the UV sensor down.'''
@@ -254,4 +234,4 @@ class UVSensor:
             self.bus.write_byte_data(self.addr, 0x00, 0x11)
         except:
             raise Exception(
-                'An exception occured when shutting the UV sensor down')
+                'Error shutting the UV sensor down')

utils/getcdata.py

@@ -1,45 +0,0 @@
-# getcdata.py - fetch the calibrated data from the AS7265x module
-# All code in this file is licensed under the ISC license, provided in LICENSE.txt
-
-import serial as ser
-import pandas as pd
-import numpy as np
-import matplotlib.pyplot as plt
-import time
-#global variables
-uartpath = '/dev/ttyUSB0'
-uartbaud = 115200
-uarttout = 5
-
-wl = [410, 435, 460, 485, 510, 535, 560, 585, 610, 645, 680, 705, 730, 760, 810, 860, 900, 940]
-responseorder = [i for i in 'RSTUVWGHIJKLABCDEF'] # works, do NOT touch!
-realorder = [i for i in 'ABCDEFGHRISJTUVWKL']
-
-
-print('getcdata')
-print('This utility is part of the TeraHz project')
-
-wavelens = pd.Series(realorder)
-
-
-plt.ion()
-win = plt.figure()
-spectrum=win.add_subplot(111)
-
-
-with ser.Serial(uartpath, uartbaud, timeout=uarttout) as sensor:
-    while True:
-        sensor.write(b'ATCDATA\n')
-        rawresp = sensor.readline().decode()
-        # parses, calculates and saves the data
-        response = pd.Series([float(i)/35.0 for i in rawresp[:-3].split(',')], index=responseorder)
-        data = pd.DataFrame(response, index=realorder, columns = ['uW/cm^2']) # puts data into a DataFrame
-        data.insert(0, 'wavelenght', wl) #inserts a legend
-        print(data)
-        spectrum.cla()
-        spectrum.plot(data['wavelenght'], data['uW/cm^2'])
-        spectrum.set_xlabel('Valovna dolžina')
-        spectrum.set_ylabel('uW/cm2')
-        win.canvas.draw()
-
-        time.sleep(0.1)

utils/smbus-test.py

@@ -1,12 +0,0 @@
-import smbus2
-
-bus = smbus2.SMBus(1)
-
-result = bus.read_byte_data(0x39, 0x8a)
-print('LUX Meter ID = {}'.format(result))
-
-result = bus.read_word_data(0x10, 0x0c)
-print('UV sensor ID = {}'.format(result))
-
-result = bus.read_word_data(0x39, 0xec)
-print('LUX chan 0 = {}'.format(result))

utils/tinter-demo.py

@@ -1,22 +0,0 @@
-from serial import Serial
-import tkinter as tk
-import pandas as pd
-
-from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg, NavigationToolbar2Tk)
-from matplotlib.backend_bases import key_press_handler
-from matplotlib.figure import Figure
-
-uartpath = '/dev/ttyUSB0'
-uartbaud = 115200
-uarttout = 5
-
-wl = [410, 435, 460, 485, 510, 535, 560, 585, 610, 645, 680, 705, 730, 760, 810, 860, 900, 940]
-responseorder = [i for i in 'RSTUVWGHIJKLABCDEF'] # works, do NOT touch!
-realorder = [i for i in 'ABCDEFGHRISJTUVWKL']
-
-root = tk.Tk()
-root.wm_title('TeraHz Demo')
-
-fig = Figure(figsize=(5, 4), dpi=100)
-plot = fig.add_subplot(111)
-canvas = FigureCanvasTkAgg(fig, master=root)