Рассказ о начале работы с Intel Galileo некоторые особенности и подводные камни. Установка Yocto Linux, запуск Python скриптов, работа с gpio

1. Платформа Intel для IoT
на примере Intel Galileo
06.06.2015 HackIoT @IT Global Meetup

2. http://fablab.spbstu.ru/

3. Intel Galileo GEN 2

4. Intel Edison

5. Arduino 1.6.4
http://www.arduino.cc/en/Main/Software

6. Firmware Update
https://downloadcenter.intel.com/download/24748

7. I2C BMP 085 Pressure and T sensor
https://github.com/adafruit/Adafruit-BMP085-Library

8. SD Card & Yocto Linux
https://software.intel.com/en-
us/iot/hardware/galileo/downloads
diskutil list
diskutil unmountDisk disk2
sudo dd bs=8m if=iotdk-galileo-image of=/dev/disk2
ctrl+t - show progress of dd

9. Setup SSH via Direct link LAN
ssh root@192.168.1.5
date -s "2015-06-04 01:03:00"
opkg update
opkg upgrade

10. Linux GPIO
echo "42" > /sys/class/gpio/export // Arduino io12
echo -n "strong" > /sys/class/gpio/gpio42/drive // (pullup|pulldown|strong|hiz)
echo "out" > /sys/class/gpio/gpio42/direction // (out|in)
echo "1" > /sys/class/gpio/gpio42/value
echo "0" > /sys/class/gpio/gpio42/value
echo "42" > /sys/class/gpio/unexport
Pin mapping:
http://www.emutexlabs.com/project/203-getting-started-with-intel-galileo-gen-2

11. Pins/python
import sys
import time
def pins_export():
try:
pin1export = open("/sys/class/gpio/export","w")
pin1export.write("42")
pin1export.close()
except IOError:
print "INFO: GPIO 3 already exists, skipping export"
fp1 = open( "/sys/class/gpio/gpio42/direction", "w" )
fp1.write( "out" )
fp1.close()
def write_led( value ):
fp2 = open( "/sys/class/gpio/gpio42/value", "w" )
fp2.write( str( value ) )
fp2.close()
pins_export()
while True:
print "on"
write_led( 1 )
time.sleep( 1 )
print "off"
write_led( 0 )
time.sleep( 1 )

12. Web Server
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.
py
python get-pip.py
pip install --upgrade setuptools
pip install virtualenv
mkdir ml && cd ml
virtualenv venv
source venv/bin/activate
pip install bottle
vi ws.py
python ws.py
…
deactivate
from bottle import route, run,
template
import sys
import os
@route('/')
def index():
lines = []
with open
('/sys/class/gpio/gpio42/value
') as f:
lines = f.readlines()
return lines[0]
run(host='localhost',
port=8080)

13. Sergei Silnov
IoT enthusiast
hackiot.ru
po@kumekay.com
fb.com/silnov