/Modules/Sensors/MAG01A/SW/Python/MAG_test.ipynb
0,0 → 1,264
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{
"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": {}
}
]
}