{"metadata": {"name": ""},"nbformat": 3,"nbformat_minor": 0,"worksheets": [{"cells": [{"cell_type": "markdown","metadata": {},"source": ["Uk\u00e1zka pou\u017eit\u00ed n\u00e1stroje IPython na manipulaci se senzorov\u00fdmi daty\n","=======\n","\n","P\u0159\u00edklad vyu\u017e\u00edv\u00e1 modulovou stavebnici MLAB a jej\u00ed knihovnu https://github.com/MLAB-project/MLAB-I2c-modules \n","\n","Zprovozn\u011bn\u00ed demo k\u00f3du\n","---------------------\n","\n","Nejd\u0159\u00edve zjist\u00edme zda m\u00e1me p\u0159\u00edstup pro z\u00e1pis a \u010dten\u00ed do syst\u00e9mov\u00e9ho za\u0159\u00edzen\u00ed. A jak\u00e9 \u010d\u00edslo m\u00e1 I\u00b2C sb\u011brnice na kterou m\u00e1me p\u0159ipojen\u00e1 \u010didla. \n"]},{"cell_type": "code","collapsed": false,"input": ["!i2cdetect -l"],"language": "python","metadata": {},"outputs": [{"output_type": "stream","stream": "stdout","text": ["i2c-0\ti2c \tintel drm CRTDDC_A \tI2C adapter\r\n","i2c-1\ti2c \tintel drm LVDSBLC_B \tI2C adapter\r\n","i2c-2\ti2c \tintel drm LVDSDDC_C \tI2C adapter\r\n","i2c-3\ti2c \tintel drm HDMIB \tI2C adapter\r\n","i2c-4\ti2c \tDPDDC-B \tI2C adapter\r\n","i2c-5\ti2c \ti2c-tiny-usb at bus 002 device 002\tI2C adapter\r\n"]}],"prompt_number": 1},{"cell_type": "markdown","metadata": {},"source": ["Proto\u017ee pro p\u0159ipojen\u00ed \u010didel k po\u010d\u00edta\u010di pou\u017e\u00edv\u00e1me adapt\u00e9r i2c-tiny-usb. Vid\u00edme, \u017ee sb\u011brnice m\u00e1 aktu\u00e1ln\u011b ozna\u010den\u00ed nap\u0159\u00edklad i2c-8. \n","\n","V p\u0159\u00edpad\u011b, \u017ee v\u00fd\u0161e uveden\u00fd p\u0159\u00edklad vr\u00e1t\u00ed chybu, nebo pojmenov\u00e1n\u00ed \"unknown\" tak nem\u00e1me p\u0159\u00edstup k syst\u00e9mov\u00fdm rozhran\u00edm. Ten z\u00edsk\u00e1me vytvo\u0159en\u00edm souboru s n\u00e1sleduj\u00edc\u00edm obsahem ve slo\u017ece: /etc/udev/rules.d/i2c-devices.rules"]},{"cell_type": "raw","metadata": {},"source": ["KERNEL==\"i2c-[0-9]*\", GROUP=\"i2c\""]},{"cell_type": "markdown","metadata": {},"source": ["Toto ozna\u010den\u00ed budeme je\u0161t\u011b d\u00e1le pot\u0159ebovat, proto si jej ulo\u017e\u00edme da prom\u011bnn\u00e9. "]},{"cell_type": "code","collapsed": false,"input": ["port = 5"],"language": "python","metadata": {},"outputs": [],"prompt_number": 2},{"cell_type": "markdown","metadata": {},"source": ["Budeme pokra\u010dovat na\u010dten\u00edm pot\u0159ebn\u00fdch modul\u016f pro zach\u00e1zen\u00ed s I\u00b2C sn\u00edma\u010di."]},{"cell_type": "code","collapsed": false,"input": ["import time\n","import datetime\n","import sys\n","\n","from pymlab import config\n","import matplotlib.pyplot as plt\n","import numpy as np"],"language": "python","metadata": {},"outputs": [],"prompt_number": 3},{"cell_type": "markdown","metadata": {},"source": ["Nyn\u00ed si nadefinujeme strukturu p\u0159ipojen\u00ed jednotliv\u00fdch \u010didel na I\u00b2C sb\u011brnici."]},{"cell_type": "code","collapsed": false,"input": ["cfg = config.Config(\n"," port = port,\n"," bus = [\n"," {\n"," \"type\": \"i2chub\",\n"," \"address\": 0x72,\n"," \n"," \"children\": [\n"," {\"name\": \"mag\", \"type\": \"mag01\" , \"channel\": 6, }, \n"," ],\n"," },\n"," ],\n",")"],"language": "python","metadata": {},"outputs": [],"prompt_number": 4},{"cell_type": "markdown","metadata": {},"source": ["Tuto strukturu inicializujeme, aby jsme dos\u00e1hli definovan\u00e9 konfigurace \u010didel."]},{"cell_type": "code","collapsed": false,"input": ["cfg.initialize()\n","mag_sensor = cfg.get_device(\"mag\")\n","time.sleep(0.5)"],"language": "python","metadata": {},"outputs": [],"prompt_number": 5},{"cell_type": "markdown","metadata": {},"source": ["Nyn\u00ed u\u017e m\u016f\u017eeme p\u0159\u00edmo komunikovat se za\u0159\u00edzen\u00edm pojmenovan\u00fdm jako gauge."]},{"cell_type": "code","collapsed": false,"input": ["MEASUREMENTS = 100\n","x = np.zeros(MEASUREMENTS)\n","y = np.zeros(MEASUREMENTS)\n","z = np.zeros(MEASUREMENTS)\n","\n","\n","for n in range(MEASUREMENTS):\n"," mag_sensor.route() #V p\u0159\u00edpad\u011b v\u00edce \u010didel je pot\u0159eba ke ka\u017ed\u00e9mu p\u0159ed jeho pou\u017eit\u00edm nechat vyroutovat cesutu na sb\u011brnici.\n"," (x[n], y[n], z[n]) = mag_sensor.axes()\n"," print(n, x[n], y[n], z[n])"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["np.savez(\"data_ground\", t, p)\n","#np.savez(\"data_top\", t, p)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["amin(p)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["amax(p)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["std(p)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["plt.plot(p)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": ["plt.plot(t)"],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"},{"cell_type": "code","collapsed": false,"input": [],"language": "python","metadata": {},"outputs": [],"prompt_number": "*"}],"metadata": {}}]}