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()
- 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
- 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(True)
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:
import my_app my_app.main()
- References
{{#widget:DISQUS
|id=networkm
|uniqid=NodeMCU Config
|url=https://aman.awiki.org/wiki/NodeMCU_Config
}}