circuitpython | Python implementation

by adafruit C Version: 7.2.0-alpha.1 License: Non-SPDX

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kandi X-RAY | circuitpython Summary

circuitpython is a C library. circuitpython has no bugs, it has no vulnerabilities and it has medium support. However circuitpython has a Non-SPDX License. You can download it from GitHub.

CircuitPython - a Python implementation for teaching coding with microcontrollers

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Support

circuitpython has a medium active ecosystem.

It has 2746 star(s) with 718 fork(s). There are 123 watchers for this library.

It had no major release in the last 12 months.

There are 464 open issues and 2059 have been closed. On average issues are closed in 106 days. There are 14 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of circuitpython is 7.2.0-alpha.1

Quality

circuitpython has no bugs reported.

Security

circuitpython has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

circuitpython has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

circuitpython releases are available to install and integrate.

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circuitpython Key Features

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circuitpython Examples and Code Snippets

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Community Discussions

Trending Discussions on circuitpython

Circuitpython take last variables from textfile

Detecting modifier keys pressed on host computer from circuitpython

What are the VID and PID for the Maker Pi RP2040 when connected by USB to PC

Where to find uctypes micropython module

Adafruit's "adafruit_servokit" library returns error on setting angle of servo

Circuitpython and Micropython ethernet http get

Converting Dijkstra's Algorithm from Python3 to CircuitPython (TI-Python)

Can't install Pip package on Raspberry PI 4 (adafruit_circuitpython_neopixel)

Python: How to increase sampling rate of TCS34725 Color Sensor on RaspberryPi

How to do non blocking usb serial input in circuit python?

QUESTION

Circuitpython take last variables from textfile

Asked 2022-Mar-21 at 13:19

I am using Circuitpython for my microcontroller. I am posting datas from microcontroller to api. If there is no internet connection, I am saving datas to text file then sending datas when internet connected.

I am writing whatever my microcontroller do. text file like this:

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ANSWER

Answered 2022-Mar-21 at 13:19

if you control the way .txt file is created, I would change the formatting of it to JSON. With JSON you can easily load your .txt file into a list of dict, and then you can use standard list/dict voodoo to easily do what you want, without any custom data processsing.

Source https://stackoverflow.com/questions/71558078

QUESTION

Detecting modifier keys pressed on host computer from circuitpython

Asked 2022-Mar-01 at 14:53

I have a Raspberry Pi Pico running CircuitPython. Is it possible for the python code on this board to detect if a modifier key is pressed on the host computer's keyboard when the board is connected to the host over USB?

My knowledge of USB protocols is limited but it feels like the Pico would need to be listening to data explicitly sent over USB. I don't think that key presses would be sent that way.

I'd be happy to be proven wrong.

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ANSWER

Answered 2022-Mar-01 at 14:53

I don't think you can do this without installing something on the host computer side to detect when the Pico was connected, check what keys were pressed and communicate with the Pico accordingly.

If the host computer is Windows then a quick search finds this which uses Windows Management Instrumentation to run Python code when a USB device changes.

Alternatively, you could attach a hardware button to the Pico and check that button when the Pico detects that it has been connected to a USB host - you appear to have already figured this out.

Source https://stackoverflow.com/questions/71301157

QUESTION

What are the VID and PID for the Maker Pi RP2040 when connected by USB to PC

Asked 2021-Dec-20 at 09:39

I have looked but cannot find these referenced currently - I have also asked on the cytron.io web site.

I eventually found these (as well as the github reply) in the Datasheet at https://docs.google.com/document/d/1DJASwxgbattM37V4AIlJVR4pxukq0up25LppA8-z_AY/edit

USB VID & PID (CircuitPython & Arduino Core)

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ANSWER

Answered 2021-Dec-14 at 17:46

So I wrote a little Python (PySerial) script and printed out the VID and PID, which are:

VID = 0x2E8A # 11914 decimal PID = 0x1000 # 4096 decimal

I'm hoping these are fixed values...

Source https://stackoverflow.com/questions/70353401

QUESTION

Where to find uctypes micropython module

Asked 2021-Dec-03 at 07:34

I'm working with circuitpython, and need access to the micropython uctypes module. I've downloaded the micropython files from github, but can't seem to find the module. Can anyone help?

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ANSWER

Answered 2021-Nov-23 at 08:14

See this CircuitPython issue: this is a known thing, and it looks like none of the ports actually have the uctypes module enabled: for that, the MICROPY_PY_UCTYPES preprocessor definition must be non-zero when building and this is normally set in the port's mpconfigport.h but that is not the case here.

So either you'll have to build yourself (see e.g. https://learn.adafruit.com/building-circuitpython/) and either add said definition into mpconfigport.h or pass it on the commandline, or find an alternative solution (same link mentions the struct module could be used instead, which it might indeed depending on the exact usecase).

Source https://stackoverflow.com/questions/70061871

QUESTION

Adafruit's "adafruit_servokit" library returns error on setting angle of servo

Asked 2021-Oct-25 at 17:00

I'd like to control a servo by a given angle.

I am using a RaspberryPi 4 Model B which is running Raspian. The servos are connected to a Adafruit PCA9685 16-Channel Servo Driver. The servo driver is connected to the RaspberryPi via i2c.

Python version 3.7.

I used the following tutorial: https://learn.adafruit.com/16-channel-pwm-servo-driver/python-circuitpython

I am able to properly control a LED (just like in the above tutorial) with the setup.

The LED is connected to the servo driver on channel 8, whereas the servo is connected at channel 2.

So here's my code (controlling the LED also included):

...

ANSWER

Answered 2021-Oct-25 at 17:00

I solved the problem myself. Here's what I did:

I was confused by the difference between circuitpython and regular python. As far as I understand this, circuitpython is a whole programming language with its environment. If that is even possible to install on the RaspberryPi, I am not sure. I checked on circuitpython's official website and it does not seem to be supported, check the download's page. In case you have circuitpython installed, you can refer to this Github page: https://github.com/adafruit/Adafruit_CircuitPython_PCA9685

Anyway, what I am looking for is Adafruit's library for "regular" python. This can be pulled from here: https://github.com/adafruit/Adafruit_Python_PCA9685 Check out the readme.md for setup instructions. With this, it worked for me. Controlling servos is now fairly easy.

Source https://stackoverflow.com/questions/69632629

QUESTION

Circuitpython and Micropython ethernet http get

Asked 2021-Oct-21 at 11:29

I am working with CircuitPython Libraries on MicroPython using the Raspberry Pi Pico. I am using Wiznett 5500 (ethernet module) and Esp01 (wifi module). When I tried jsonplaceholder's api, Wiznett can get request in 4,5 seconds and ESP01 can get request in 1.6 second. When I tried my real api Wiznett 5500 can get request in 1 minute and Esp01 can get in 1.6 second. My api is really fast like microsecond, I don't understand why is wiznett getting data in 1 minute.

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ANSWER

Answered 2021-Oct-21 at 11:29

You need to get more data not only {"exampleexa":888.8}. Add like 3 more lines.

Source https://stackoverflow.com/questions/69656815

QUESTION

Converting Dijkstra's Algorithm from Python3 to CircuitPython (TI-Python)

Asked 2021-Sep-21 at 13:44

I'm writing Python code on one of the new TI-84 Python edition calculators. These use a version of CircuitPython with limited support for some quite basic features.

This includes missing dictionary methods such as items() and values().

My original version of Dijkstra's Algorithm is below, followed by a nearly complete version in TI-Python. I'm having trouble converting the final two items() instances with working alternatives.

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ANSWER

Answered 2021-Sep-21 at 13:44

Whilst .items() is very useful, it is equivalent to iterating the keys and then looking up the value.

Source https://stackoverflow.com/questions/69269396

QUESTION

Can't install Pip package on Raspberry PI 4 (adafruit_circuitpython_neopixel)

Asked 2021-Apr-26 at 16:14

I'm trying to install the library above on a Raspberry Pi 4 running Raspbian Buster / RetroPi .

Setup collects packages, and then fails on setup.py stating:

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ANSWER

Answered 2021-Apr-26 at 16:14

SuperStormer suggested sudo apt install python3-dev - which worked!

I have no idea why this works, as This post suggests that it's usage is for Python extensions, not regular libraries.

It apparently contains the Python C headers, so maybe the library needed those for some reason.

Source https://stackoverflow.com/questions/67133353

QUESTION

Python: How to increase sampling rate of TCS34725 Color Sensor on RaspberryPi

Asked 2021-Apr-15 at 09:06

I am trying to measure the LED lighting flickering rate through an Adafruit sensor: TCS34725 on Raspberry Pi4. I am either reading the internally calculated lux value or raw data(RGB).

According to the TCS34725 library documentation, the minimum sampling rate for the sensor is 2.4ms (~400Hz). The sensor itself has a clock frequency of 400kHz. Python TCS34725 library

However, when I run a test script, the time cycles for each sampling are at ~0.0155769 seconds (~60 Hz), for both raw values or calculated lux value.

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ANSWER

Answered 2021-Apr-15 at 09:06

If you peek into the library's code at what happens when you access .lux, you'll find that all of this code gets executed.

It involves (at least)

one I2C write+read for ATIME
one I2C write+read for .gain
four I2C write+reads for the raw color
all that calculation

If you need to squeeze out more performance, I would recommend accessing those manually, then doing the computations later "offline" once you've captured your data.

Source https://stackoverflow.com/questions/67105362

QUESTION

How to do non blocking usb serial input in circuit python?

Asked 2021-Jan-15 at 12:45

I am trying to interface a micropython board with python on my computer using serial read and write, however I can't find a way to read usb serial data in micropython that is non-blocking.

Basicly I want to call the input function without requiring an input to move on. (something like https://github.com/adafruit/circuitpython/pull/1186 but for usb)

I have tried using tasko, uselect (it failed to import the library and I can't find a download), and await functions. I'm not sure it there is a way to do this, but any help would be appreciated.

...

ANSWER

Answered 2021-Jan-15 at 12:45

For CircuitPython there's supervisor.runtime.serial_bytes_available which may provide the building block for what you want to do.

This is discussed on Adafruit Forums: Receive commands from the computer via USB.

Source https://stackoverflow.com/questions/65647986

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Install circuitpython

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