NodeMCU Config
Micropython
Installation
- Flashing Micropython
Download firmware file from micropython.org
sudo pip install esptool esptool.py --port /dev/ttyUSB0 erase_flash esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 ~/Desktop/esp8266-20171101-v1.9.3.bin
- Check the firmware integrity:
import esp
esp.check_fw()
Connecting
- Via Terminal:
sudo apt install picocom picocom /dev/ttyUSB0 -b115200
- Via REPL(web):
import webrepl_setup
- If you disabled automatic start-up on boot, you may run configured daemon on demand using:
import webrepl
webrepl.start()
- Upload data using Serial Port
sudo pip install adafruit-ampy ampy --port /dev/ttyUSB0 put ~/Desktop/main.py
File System
- Checking filesystem:
import os
os.listdir()
- Create directories:
os.mkdir('dir')
- Remove Files:
os.remove('data.txt')
- Reading data:
f = open('data.txt')
f.read()
f.close()
- Writing Data to files:
f = open('data.txt', 'w')
f.write('some data')
f.close()
Networking
- Checking Machine Frequency & Overclocking:
import machine
machine.freq() # get the current frequency of the CPU
machine.freq(160000000) # set the CPU frequency to 160 MHz
AP Mode
- Check AP Name:
import network
ap = network.WLAN(network.AP_IF)
print(ap.config('essid'))
- Change AP name and password:
import network
ap = network.WLAN(network.AP_IF)
ap.active(True)
ap.config(essid='MyESP8266', authmode=network.AUTH_WPA_WPA2_PSK, password='mypassword')
print(ap.config('essid'))
- Turning off AP:
ap = network.WLAN(network.AP_IF)
ap.active(False)
Station Mode
Connecting to WIFI AP:
sta_if.active(True) sta_if.connect('<your ESSID>', '<your password>')
To check if the connection is established:
sta_if.isconnected()
Once established you can check the IP address:
sta_if.ifconfig()
You can then disable the access-point interface if you no longer need it:
ap_if.active(False)
Disconnecting from Station:
sta_if = network.WLAN(network.STA_IF) sta_if.active(False)
Here is a function you can run (or put in your boot.py file) to automatically connect to your WiFi network:
def do_connect():
import network
sta_if = network.WLAN(network.STA_IF)
if not sta_if.isconnected():
print('connecting to network...')
sta_if.active(True)
sta_if.connect('<essid>', '<password>')
while not sta_if.isconnected():
pass
print('network config:', sta_if.ifconfig())
<syntaxhighlight>
== Boot Process ==
#As a final step of boot procedure, ''main.py'' is executed from filesystem
#This file is a hook to start up a user application each time on boot (instead of going to REPL).
#For small test applications, you may name them directly as ''main.py''
#But instead it’s recommended to keep your application(s) in separate files, and have just the following in main.py:
<syntaxhighlight lang="python">
import my_app
my_app.main()
Lua
This section is under construction. |
- References
{{#widget:DISQUS
|id=networkm
|uniqid=NodeMCU Config
|url=https://aman.awiki.org/wiki/NodeMCU_Config
}}