kandi X-RAY | micropython Summary
kandi X-RAY | micropython Summary
. This is the MicroPython project, which aims to put an implementation of Python 3.x on microcontrollers and small embedded systems. You can find the official website at [micropython.org] MicroPython implements the entire Python 3.4 syntax (including exceptions, with, yield from, etc., and additionally async/await keywords from Python 3.5). The following core datatypes are provided: str (including basic Unicode support), bytes, bytearray, tuple, list, dict, set, frozenset, array.array, collections.namedtuple, classes and instances. Builtin modules include sys, time, and struct, etc. Select ports have support for _thread module (multithreading). Note that only a subset of Python 3 functionality is implemented for the data types and modules. MicroPython can execute scripts in textual source form or from precompiled bytecode, in both cases either from an on-device filesystem or "frozen" into the MicroPython executable. See the repository for the MicroPython board (PyBoard), the officially supported reference electronic circuit board. Major components in this repository: - py/ — the core Python implementation, including compiler, runtime, and core library. - mpy-cross/ — the MicroPython cross-compiler which is used to turn scripts into precompiled bytecode. - ports/unix/ — a version of MicroPython that runs on Unix. - ports/stm32/ — a version of MicroPython that runs on the PyBoard and similar STM32 boards (using ST’s Cube HAL drivers). - ports/minimal/ — a minimal MicroPython port. Start with this if you want to port MicroPython to another microcontroller. - tests/ — test framework and test scripts. - docs/ — user documentation in Sphinx reStructuredText format. Rendered HTML documentation is available at Additional components: - ports/bare-arm/ — a bare minimum version of MicroPython for ARM MCUs. Used mostly to control code size. - ports/teensy/ — a version of MicroPython that runs on the Teensy 3.1 (preliminary but functional). - ports/pic16bit/ — a version of MicroPython for 16-bit PIC microcontrollers. - ports/cc3200/ — a version of MicroPython that runs on the CC3200 from TI. - ports/esp8266/ — a version of MicroPython that runs on Espressif’s ESP8266 SoC. - ports/esp32/ — a version of MicroPython that runs on Espressif’s ESP32 SoC. - ports/nrf/ — a version of MicroPython that runs on Nordic’s nRF51 and nRF52 MCUs. - extmod/ — additional (non-core) modules implemented in C. - tools/ — various tools, including the pyboard.py module. - examples/ — a few example Python scripts. The subdirectories above may include READMEs with additional info. "make" is used to build the components, or "gmake" on BSD-based systems. You will also need bash, gcc, and Python 3.3+ available as the command python3 (if your system only has Python 2.7 then invoke make with the additional option PYTHON=python2).
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micropython Key Features
micropython Examples and Code Snippets
This feature allows for socket-like data exchange between two BLE devices. Once the devices are connected via GAP, either device can listen for the other to connect on a numeric PSM (Protocol/Service Multiplexer). **Note:** This is currently only sup
Pairing allows a connection to be encrypted and authenticated via exchange of secrets (with optional MITM protection via passkey authentication). Bonding is the process of storing those secrets into non-volatile storage. When bonded, a device is able
pip install sphinx pip install sphinx_rtd_theme make html
# This example finds and connects to a BLE temperature sensor (e.g. the one in ble_temperature.py). import bluetooth import random import struct import time import micropython from ble_advertising import decode_services, decode_name from micropyth
# This example finds and connects to a peripheral running the # UART service (e.g. ble_simple_peripheral.py). import bluetooth import random import struct import time import micropython from ble_advertising import decode_services, decode_name from
# This example demonstrates a simple temperature sensor peripheral. # # The sensor's local value updates every second, and it will notify # any connected central every 10 seconds. # # Work-in-progress demo of implementing bonding and passkey auth. i
Trending Discussions on micropython
I have the following MicroPython code running on an ESP32:...
ANSWERAnswered 2022-Apr-17 at 15:02
I am also a little suspicious of the bytes retrieved from wlan_sta.config('mac'). I would have expected something that looked more like b'\xaa\xbb\xcc\x11\x22\x33' instead of b'0\xae\xa4z\xa7$'. The z and the $ seem very out of place for something that should be hexadecimal and it seems too short for what should be six pairs of digits.
You're not getting back a hexadecimal string, you're getting a byte string. So if the MAC address contains the value
7A, then the byte string will contain
z (which has ASCII value 122 (hex
Am I using the correct method to get the MAC address?
If it is correct, how can I format it as six pairs of hex digits?
If you want to print the MAC address as a hex string, you can use the
I was working with micropython on a SEEED XIAO (SAMD21) using version 1.18, and wanted to use 'compiled' libraries (
.mpy) to conserve space. I had mpy-cross for version 5 which worked okay for me. I also wanted to have floating point so I built a new micropython with that option- from the latest (20220302) github version- and noticed that mpy-cross had updated to version 6. I thought I would check to see which versions of
.mpy were used The micropython documentation suggests some code to check the version of
.mpy using the
sys.implementation object. I noticed a variety of
Version 1.18- released by micropython 20220117 on the XIAO SAMD21 gave the following results:...
ANSWERAnswered 2022-Mar-27 at 18:05
If you want to use precompiled/bytecode .mpy files then you will need to Decide to use either bytecode or compile to native code for your mcu platforms.
For bytecode you will need to distribute a bytecode version that matches the runtime firmware, 1.12-1.18 == 5, next version will increase
For native code you'll need to distribute versions for each platform that you want to support. An esp32c3 cannot run stm32 native code and vice-versa
Also the different ports/board will indeed have differences in some of the stdlib APIs. Your code must be robust enough to handle these differences.
I am trying to create a file in an ESP32 named "PassWord" containing a password, using Micropython Serial. The code below works with a "hardwired" password, but I would like to be able to send the contents of a variable that was typed in by the user. The sending script is running in Win10 using Python 3.7.9...
ANSWERAnswered 2022-Mar-06 at 21:19
You could do something like this. Just made this as an exaggerated example so you can learn. You could put this whole thing into the send function input if you wanted.
I built a webpage on an ESP32 chip, charged to create an access point allowing my computer to connect in order to access this page.
For the moment I can only access it using the IP of my ESP by typing it in a browser but it can be very bothersome.
I'd like to know if it was possible to change the url of the page using words instead of the ESP's IP.
Maybe I'm missing some technical terms but I didn't find any solution on the internet.
PS: I'm using micropython with sockets to serve html files from the board:...
ANSWERAnswered 2022-Feb-26 at 19:31
Certainly. The easiest option is enabling mDNS. This allows hosts in the same local network to resolve the device's name (e.g.
espressif.local) into its IP. Only works in local network and requires an mDNS client on the computer (Mac, Linux and Windows all tend to have it built in these days).
No idea how to do it in Micropython, though. Give Google a try.
Basically I'm just trying to figure out how an spdt switch would work with a raspberry pi pico. When I search for information on how to interface a switch with a pico, all I get is info on button switches.
Does the spdt switch act like a closed circuit, constantly providing power to the pin I connect it to?
Assuming the answer to the question above is "yes", how would I go about telling micropython to do different things based on which pin is receiving power?
Sorry for the simple questions, I have no experience in the domain of microcontrollers and can't find this info anywhere....
ANSWERAnswered 2022-Feb-23 at 12:37
A switch -- by itself -- doesn't provide power to anything. All it does is close and open a circuit. You can replace the switch with a wire and connect/disconnect the wire and accomplish the same thing.
If you had the middle pin of the switch connected to GPIO 2, and the two outer pins wire to Ground and Vcc, you could use the switch to switch the value of the GPIO between logic 0 and logic 1.
Reading the value would look something like this:
This is code that waits for an event coming from button A.
I want to wait for either button A OR button B to be pressed.
Is this possible?
I know that in
Scratch this is possible with something like
button.any, also the above code is written in
micropython, so maybe someone from this field can also help. Thank you.
ANSWERAnswered 2021-Dec-28 at 20:08
Have a look at the python code generated using the 'on event from' block in https://makecode.microbit.org. This block can be found under the Advanced tab. The block can be set to wait for either button A or B to be pressed. The micropython code generated in this case is:
I am following the documentation for building micropython...
ANSWERAnswered 2022-Feb-09 at 12:32
For some reason the installer did not put the binaries in my path. I fixed this with
I'm trying to read all files with
.py extensions in an sd card using MicroPython.
I checked the answers in this question but they don't work with MicroPython.
MicroPython doesn't have
pathlib and when using
os library and try this code:
ANSWERAnswered 2022-Feb-02 at 14:08
your on the right track,
os.listdir works just fine on any version of MicroPython, but does not recurse the sub-folders.
so you need to distinguish a folder from a filenode as in the below.
I'm trying to work with the Tronpy module in Micropython. It works fine when I'm using CPython. However, in Micropython, I tried to install it and got an error message. I'm using Fedora 34....
ANSWERAnswered 2022-Feb-02 at 15:49
It appears that you are attempting to upip install a CPython module on MicroPython. (sorry , could have seen that sooner)
That will not work - unless that module is packaged specifically for MicroPython.
The error message could be clearer though...
lastly: in upip you can enable some debug messages by setting
upip.debug = True as in the below sample
Using a Expressif dev-board and standard micropython.bin I was able to create a littlefs2 partition, mount it and write data into a file:...
ANSWERAnswered 2022-Jan-31 at 22:27
if reformat with vfsFat is close enough to 'getting rid of' you can do the following:
No vulnerabilities reported
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