Micropython Kurs 2023 - Teil 2

Micropython Kurs 2023 - Teil 2

Hier werden wir den Umgang mit der Microcontroller spezifischen Hardware lernen.

1. Abend

Di. 16.1.24
19. Lektion: Raspberry Pi Pico W
20. Lektion: Vorstellung des Experimentierboards
21. Lektion: Pin's
22. Lektion: Neopixel
23. Lektion: Onewire
24. Lektion: UART
25. Lektion: SPI
26. Lektion: I2C

• TCA9548a
  • https://github.com/mcauser/microphyton-tca9548a

27. Lektion: ADC

• https://randomnerdtutorials.com/raspberry-pi-pico-analog-inputs-micropython/
  • ADC des Raspberry Pi Pico
  • ADC des ESP32
  • ADC ADS1115
    • https://www.ti.com/lit/ds/symlink/ads1115.pdf?ts=1693292712477&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252Fde-de%252FADS1115
    • https://www.az-delivery.de/products/analog-digitalwandler-ads1115-mit-i2c-interface?variant=19034185039968
    • https://www.berrybase.de/ads1115-4-kanal-16-bit-ad-wandler-breakout-board
    • https://github.com/wollewald/ADS1115_mpy
    • https://github.com/robert-hh/ads1x15
    • https://pypi.org/project/ADS1115-mic-py/
    • https://www.grzesina.de/az/blog_robotcar/ads1115rc.py
    • https://how2electronics.com/ads1115-16-bit-adc-module-with-raspberry-pi-pico/

28. Lektion: DAC
29. Lektion: Puls Weiten Modulation (PWM)

• https://randomnerdtutorials.com/raspberry-pi-pico-pwm-micropython/

30. Lektion: Watch Dog Timer (WDT)
31. Lektion: Interrupts
32. Lektion: Timer

2. Abend

Di. 23.1.2024

Wlan

• https://www.youtube.com/watch?v=Me7VM2z3_f8

Unix-Zeit

ACHTUNG ESP32 und Pico arbeiten mit unterschiedlichen Epochen:

MicroPython v1.20.0 on 2023-04-26; Raspberry Pi Pico W with RP2040
>>> import time
>>> time.gmtime(0)
(1970, 1, 1, 0, 0, 0, 3, 1)
>>> 

MicroPython v1.20.0 on 2023-04-26; ESP32 module with ESP32
>>> import time
>>> time.gmtime(0)
(2000, 1, 1, 0, 0, 0, 5, 1)
>>> 

NTP/RTC

Die RTC des ESP32 soll sehr ungenau sein.

• https://www.az-delivery.de/blogs/azdelivery-blog-fur-arduino-und-raspberry-pi/rtc-und-ntp-in-micropython-mit-esp8266-und-esp32-teil-1
• https://www.az-delivery.de/blogs/azdelivery-blog-fur-arduino-und-raspberry-pi/rtc-und-ntp-in-micropython-mit-esp8266-und-esp32-teil-2-tiefschlaf?utm_source=90%20Day%20Engaged&utm_medium=email&utm_campaign=220523_Hydroponik%20-%20Pflanzen%20ohne%20Erde_Blog%20%2801H0SBCNDVZF5ZP2WDDDZXW24A%29&utm_content=RTC%20und%20NTP%20in%20MicroPython%20Teil%202&utm_term=Campaign&_kx=t6chfMYPTCmi3Q3FmsDDDGHlL3Kt6ctVyJh9Hkft9JU%3D.QVRJMi

MicroPython v1.20.0 on 2023-04-26; ESP32S3 module with ESP32S3

Type "help()" for more information.

>>> import network
>>> import ntptime
>>> from machine import RTC

# WLAN einrichten

>>> wlan = network.WLAN(network.STA_IF)
>>> wlan.active(True)
True
>>> wlan.connect('SSID', 'PW')
>>> wlan.isconnected()
False
>>> wlan.isconnected()
True
>>> wlan.ifconfig()
('192.168.5.109', '255.255.255.0', '192.168.5.1', '192.168.5.1')

# Die RTC mit NTP einstellen

>>> ntptime.settime()

# Die RTC einrichten

>>> rtc = RTC()

>>> rtc.datetime()
(2023, 9, 5, 1, 15, 39, 56, 427762)
>>> rtc.datetime()
(2023, 9, 5, 1, 16, 14, 5, 837765)
>>> rtc.datetime()
(2023, 9, 5, 1, 16, 21, 42, 597764)
>>> dir(ntptime)
['__class__', '__name__', '__dict__', '__file__', 'socket', 'struct', 'time', 'timeout', 'utime', '__version__', 'host', 'settime']
>>> ntptime.time()
747246194
>>> rtc.datetime()
(2023, 9, 5, 1, 16, 23, 49, 897771)
>>> ntptime.time()
747246234
>>> ntptime.utime
<module 'utime'>
>>> rtc.datetime()
(2023, 9, 5, 1, 16, 24, 29, 867765)
>>> ntptime.time()
747246276
>>> import time
>>> dir(time)
['__class__', '__name__', '__dict__', 'gmtime', 'localtime', 'mktime', 'sleep', 'sleep_ms', 'sleep_us', 'ticks_add', 'ticks_cpu', 'ticks_diff', 'ticks_ms', 'ticks_us', 'time', 'time_ns']
>>> time.gmtime()
(2023, 9, 5, 16, 25, 39, 1, 248)
>>> time.localtime()
(2023, 9, 5, 16, 25, 57, 1, 248)
>>> time.mktime(rtc.datetime())
747191787
>>> ntptime.time()
747246461
>>> time.mktime(rtc.datetime())
747191787
>>> ntptime.time()
747246472
>>> time.mktime(rtc.datetime())
747191788
>>> ntptime.time()
747246489
>>> 

3. Abend

Di. 30.1.2024

• Display anschließen
  • https://docs.micropython.org/en/latest/esp8266/tutorial/ssd1306.html
  • https://github.com/TimAEllis/ssd1306-py/blob/master/ssd1306.py
  • https://www.grzesina.de/az/blog_robotcar/ssd1306.py

• Webserver
  • https://github.com/jczic/MicroWebSrv2
  • Raspberry Pi Pico
    • MicroWebSrv - geht nicht!
      • https://github.com/jczic/MicroWebSrv
      • https://forums.raspberrypi.com/viewtopic.php?t=338692
    • Andere Links mit Sockets:
      • http://www.doctormonk.com/2022/09/a-better-web-server-for-raspberry-pi.html
      • https://github.com/miguelgrinberg/microdot
      • https://microdot.readthedocs.io/en/latest/intro.html
      • https://wellys.com/posts/rp2040_microphyton_webserver/
      • https://github.com/miguelgrinberg/microdot
      • https://www.rasppishop.de/pico-w-als-webserver
      • https://www.elektronik-kompendium.de/sites/raspberry-pi/2707131.htm
      • https://www.youtube.com/watch?v=RN2k_0mrKxI
      • https://www.youtube.com/watch?v=Me7VM2z3_f8
      • https://draeger-it.blog/raspberry-pi-pico-w-programmieren-eines-webservers/
      • https://hackaday.io/project/189675-raspberry-pi-pico-w-super-simple-webserver
      • https://github.com/sciencedude1990/MicropythonPicoWebServer

4. Abend

Di. 6.2.2024

• • https://levelup.gitconnected.com/6-4-built-in-python-functions-you-cannot-miss-out-on-9dec1b566e1f
  • https://medium.com/techtofreedom/19-sweet-python-syntax-sugar-for-improving-your-coding-experience-37c4118fc6b1
  • https://medium.com/codex/11-python-coding-habits-that-make-you-a-bad-programmer-5e3306077686
  • https://blog.devgenius.io/50-python-features-tips-tricks-that-you-dont-know-8a2cb55cd493
  • https://medium.com/@shivam2003/20-python-concepts-i-wish-i-knew-way-earlier-40ed5674cd52

• String Formatierung
  • https://realpython.com/python-f-strings/?utm_source=notification_summary&utm_medium=email&utm_campaign=2023-10-19

• List comprehensions
  • https://python.plainenglish.io/mastering-pythons-list-comprehensions-e93b147a8c0b
  • https://medium.com/@mr.stucknet/python-comprehensions-demystified-writing-code-like-a-wizard-a8c50d3ed428
• Dokumentation
  • pass
• Menue erstellen
  • https://github.com/Lysander/snippets/blob/master/Python/python-misc/simplemenus/TUTORIAL.md
• Compiler
  • https://python.plainenglish.io/i-explored-pythons-powerful-compile-function-and-discovered-e315d23b8e7e
• Sortieren
  • https://medium.com/@huzaifazahoor654/sorting-with-all-data-structures-in-python-c697a34931c0
• Wertgleichheit == und Identität is
• 16. Lektion: Funktionen.extend()
  
• Generatoren
• Regulare Expressions
  • https://python.plainenglish.io/introduction-to-regular-expressions-in-python-a77f1c860b13

• Listen
  • Comprehention
  • Python's list Data Type
  • https://blog.devgenius.io/list-dictionary-and-set-comprehensions-in-python-103c2a20191b
  • https://realpython.com/python-list/
• Slicing

• • https://realphyton.com/phyton-list/
• Konstanten
• copy deep und flach
• https://www.heise.de/ratgeber/Phyton-Welche-Auflistungstypen-es-gibt-und-wie-sie-verwendet-werden-9216638.html?seite=all
• https://levelup.gitconnected.com/30-phyton-concepts-i-wish-i-knew-way-earlier-3add72af6433
• Bool
  • bool(mylist) - not

Sortieren

• https://medium.com/@huzaifazahoor654/sorting-with-all-data-structures-in-python-c697a34931c0

Mitgliedschaft

• in

For/Else

• https://book.pythontips.com/en/latest/for_-_else.html

Bytearray / Bytestring

Werden nur zur Vorbereitung auf eine serielle Datenübertragung verwendet.
Datenstrukturen werden in einzelne Bytes zerlegt.
python-bytes-to-string-how-to-convert-a-bytestring
python-bytes

5. Abend

Di. 13.2.2024

Kritik

$ jupyter notebook

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