NodeMCU Config: Difference between revisions
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machine.freq(160000000) # set the CPU frequency to 160 MHz |
machine.freq(160000000) # set the CPU frequency to 160 MHz |
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</syntaxhighlight> |
</syntaxhighlight> |
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=== AP Mode === |
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*Check AP Name: |
*Check AP Name: |
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ap.active(False) |
ap.active(False) |
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</syntaxhighlight> |
</syntaxhighlight> |
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=== Station Mode === |
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First activate the station interface: |
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sta_if.active(True) |
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Then connect to your WiFi network: |
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sta_if.connect('<your ESSID>', '<your password>') |
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To check if the connection is established use: |
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sta_if.isconnected() |
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Once established you can check the IP address: |
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sta_if.ifconfig() |
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('192.168.0.2', '255.255.255.0', '192.168.0.1', '8.8.8.8') |
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You can then disable the access-point interface if you no longer need it: |
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ap_if.active(False) |
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== Boot Process == |
== Boot Process == |
Revision as of 16:30, 22 April 2018
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
First activate the station interface:
sta_if.active(True)
Then connect to your WiFi network:
sta_if.connect('<your ESSID>', '<your password>')
To check if the connection is established use:
sta_if.isconnected()
Once established you can check the IP address:
sta_if.ifconfig()
('192.168.0.2', '255.255.255.0', '192.168.0.1', '8.8.8.8')
You can then disable the access-point interface if you no longer need it:
ap_if.active(False)
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()
Lua
This section is under construction. |
- References
{{#widget:DISQUS
|id=networkm
|uniqid=NodeMCU Config
|url=https://aman.awiki.org/wiki/NodeMCU_Config
}}