Test program for my Multi_WS2811 library that started out as a fork of heroic/WS2811. My library uses hardware DMA on the FRDM-KL25Z to drive up to 16 strings of WS2811 or WS2812 LEDs in parallel.
Dependencies: Multi_WS2811 mbed MMA8451Q
Fork of WS2811 by
NOTE: I have accidentally pushed changes for another fork of this program that I used in the recent Georgetown Carnival Power Tool Races. When I get some time, I will restore the test program to its original glory.
You can see my power tool racer (Nevermore's Revenge) here
This tests my FRDM-KL25Z multi-string WS2811/WS2812 library. It uses the accelerometer to change the rainbow phase on two strings of LEDs as well as the touch sense to change brightness.
A video of this program in operation is here.
Here is the library that I developed to run the LEDs:
Import libraryMulti_WS2811
Library allowing up to 16 strings of 60 WS2811 or WS2812 LEDs to be driven from a single FRDM-KL25Z board. Uses hardware DMA to do a full 800 KHz rate without much CPU burden.
main.cpp@19:600deef36348, 2013-12-06 (annotated)
- Committer:
- bikeNomad
- Date:
- Fri Dec 06 06:58:12 2013 +0000
- Revision:
- 19:600deef36348
- Parent:
- 18:d98353e8c61c
- Child:
- 20:b9d76e567637
added HSB/RGB conversions; removed unnecessary virtuals
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bikeNomad | 17:b4e9d8f4baa9 | 1 | #include "mbed.h" |
bikeNomad | 18:d98353e8c61c | 2 | #include "WS2811.h" |
bikeNomad | 19:600deef36348 | 3 | #include "Colors.h" |
bikeNomad | 17:b4e9d8f4baa9 | 4 | |
bikeNomad | 17:b4e9d8f4baa9 | 5 | int main(void) |
bikeNomad | 17:b4e9d8f4baa9 | 6 | { |
bikeNomad | 19:600deef36348 | 7 | const unsigned nLEDs = 60*4; |
bikeNomad | 19:600deef36348 | 8 | |
bikeNomad | 19:600deef36348 | 9 | // NLEDs MOSI SCK |
bikeNomad | 19:600deef36348 | 10 | WS2811 lightStrip(nLEDs, PTD2, PTD3); |
bikeNomad | 19:600deef36348 | 11 | |
bikeNomad | 19:600deef36348 | 12 | float sat = 1.0; |
bikeNomad | 19:600deef36348 | 13 | float brite = 0.25; |
bikeNomad | 19:600deef36348 | 14 | for (float hueShift = 0.0; hueShift < 10.0; hueShift += 1.0 / 20) { |
bikeNomad | 19:600deef36348 | 15 | for (unsigned i = 0; i < nLEDs; i++) { |
bikeNomad | 19:600deef36348 | 16 | uint8_t r, g, b; |
bikeNomad | 19:600deef36348 | 17 | float hue = ((float)i / (float)nLEDs) + hueShift; |
bikeNomad | 19:600deef36348 | 18 | HSBtoRGB(hue, sat, brite, &r, &g, &b); |
bikeNomad | 19:600deef36348 | 19 | lightStrip.setPixelColor(i, LedStrip::Color(r, g, b)); |
bikeNomad | 19:600deef36348 | 20 | } |
bikeNomad | 19:600deef36348 | 21 | lightStrip.begin(); |
bikeNomad | 19:600deef36348 | 22 | wait(0.5); |
bikeNomad | 19:600deef36348 | 23 | } |
bikeNomad | 17:b4e9d8f4baa9 | 24 | } |