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https://github.com/nickovs/ws2812-SPI
An efficient micropython WS2812 (NeoPixel) driver
https://github.com/nickovs/ws2812-SPI
Last synced: 3 months ago
JSON representation
An efficient micropython WS2812 (NeoPixel) driver
- Host: GitHub
- URL: https://github.com/nickovs/ws2812-SPI
- Owner: nickovs
- License: apache-2.0
- Created: 2016-12-02T22:56:54.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2020-10-30T01:06:33.000Z (about 4 years ago)
- Last Synced: 2024-04-30T06:32:09.122Z (6 months ago)
- Language: Python
- Size: 7.81 KB
- Stars: 25
- Watchers: 5
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-micropython - ws2812-SPI - An efficient MicroPython WS2812 (NeoPixel) driver. (Libraries / Display)
README
# ws2812-SPI
An efficient micropython WS2812 (NeoPixel) driver
This library allows for easy access to a set of WS2812 RGB LEDs
attached to a microcontroller running
[MicroPython](https://micropython.org) using an SPI port. This (at
least in theory) allows for more efficient and reliable delivery of
the data compared to using "bit banging" of a regular IO line.
The NeoPixel object can be treated as a 2D array, `pixel_count` long
and 3 wide. Pixels can be accessed as a 3-tuple or through their
individual Green, Blue and Red components (in that order). It can also
be accessed with 1D slice operations to read or write a list of
3-tuples and a single 3-tuple can be written to a whole slice to set a
row of pixels to the same value.
```python
sp = machine.SPI(1)
sp.init(baudrate=3200000)
np = NeoPixel(sp, 100)
# Blank the whole set
np[:] = (0,0,0)
# Set the first 10 pixels to dark blue
np[0:10] = (0,0,40)
# Set the second pixel to green
np[1] = (128,0,0)
# Set the third pixel's red value to full brightness
np[2,2] = 255
# Copy the 2nd pixel to the 5th
np[4] = np[1]
# Copy the first 16 pixels to the last 16 pixels
np[-16:] = np[:16]
# Send the data out to the pixels
np.write()
```