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=NodeMCU Devkit=
+
#REDIRECT [[MicroPython]]
[[File:Nodemcu.jpg]]
 
*ESP8266 a microcontroller from Espressif
 
*Integrated WiFi
 
*80MHz clock speed
 
 
 
=MicroPython=
 
[https://docs.micropython.org/en/latest/pyboard/ https://docs.micropython.org/en/latest/pyboard/]
 
 
 
=Install=
 
[http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/intro.html#deploying-the-firmware http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/intro.html#deploying-the-firmware]
 
 
 
[http://micropython.org/download#esp8266 http://micropython.org/download#esp8266]
 
<syntaxhighlight lang="bash">
 
wget http://micropython.org/resources/firmware/esp8266-20171101-v1.9.3.bin
 
pip install esptool
 
esptool.py --port /dev/ttyUSB0 write_flash 0 esp8266-20171101-v1.9.3.bin
 
</syntaxhighlight>
 
 
 
<syntaxhighlight lang="bash">
 
esptool.py --port /dev/ttyUSB0 erase_flash
 
</syntaxhighlight>
 
 
 
<syntaxhighlight lang="bash">
 
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=8m 0 esp8266-20171101-v1.9.3.bin
 
</syntaxhighlight>
 
 
 
=Connect through serial=
 
<syntaxhighlight lang="bash">
 
screen /dev/ttyUSB0 115200
 
</syntaxhighlight>
 
Stäng screen: Ctrl+A, k, y
 
 
 
=Connect to WiFi=
 
[http://docs.micropython.org/en/v1.8.7/esp8266/esp8266/tutorial/network_basics.html http://docs.micropython.org/en/v1.8.7/esp8266/esp8266/tutorial/network_basics.html]
 
 
 
<syntaxhighlight lang="bash">
 
import network
 
 
 
ap_if = network.WLAN(network.AP_IF)
 
ap_if.disconnect()
 
 
 
sta_if = network.WLAN(network.STA_IF)
 
sta_if.active(True)
 
 
 
sta_if.connect('SSID', 'password')
 
</syntaxhighlight>
 
 
 
<syntaxhighlight lang="bash">
 
sta_if.ifconfig()
 
</syntaxhighlight>
 
 
 
=HTTP GET=
 
<syntaxhighlight lang="bash">
 
import urequests
 
response = urequests.get("http://tim.gremalm.se/hello")
 
response.text
 
response.close()
 
</syntaxhighlight>
 
 
 
 
 
=WS2812=
 
[http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/neopixel.html http://docs.micropython.org/en/v1.8.2/esp8266/esp8266/tutorial/neopixel.html]
 
<syntaxhighlight lang="bash">
 
from machine import Pin
 
from neopixel import NeoPixel
 
 
 
np = neopixel.NeoPixel(machine.Pin(2), 3)
 
 
 
np[0] = (255, 0, 0)
 
np[1] = (0, 128, 0)
 
np[2] = (0, 0, 64)
 
np.write()
 
</syntaxhighlight>
 
 
 
=GPIO=
 
[https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/pins.html https://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/pins.html]
 
<syntaxhighlight lang="bash">
 
from machine import Pin
 
button = Pin(0)
 
button = Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
 
pin.value()
 
</syntaxhighlight>
 
[https://github.com/nodemcu/nodemcu-devkit]
 
[[File:NodeMCUPinout.png]]
 
 
 
=File system on flash=
 
<syntaxhighlight lang="bash">
 
import os
 
os.listdir()
 
os.remove('filename')
 
</syntaxhighlight>
 
 
 
=Connect through websocket=
 
[https://micropython.org/webrepl/ https://micropython.org/webrepl/]
 
 
 
[https://learn.adafruit.com/micropython-basics-esp8266-webrepl/access-webrepl https://learn.adafruit.com/micropython-basics-esp8266-webrepl/access-webrepl]
 
 
 
<syntaxhighlight lang="bash">
 
import webrepl_setup
 
</syntaxhighlight>
 

Latest revision as of 04:24, 22 April 2018

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