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@25:751c89f7e654, 2014-01-02 (annotated)
- Committer:
- bikeNomad
- Date:
- Thu Jan 02 19:42:14 2014 +0000
- Revision:
- 25:751c89f7e654
- Parent:
- 24:feb1dae0403a
- Child:
- 27:88c2abdf5eb9
added second light strip to demo.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bikeNomad | 22:abfed71656bd | 1 | #include "mbed.h" |
bikeNomad | 22:abfed71656bd | 2 | #include "WS2811.h" |
bikeNomad | 22:abfed71656bd | 3 | #include "Colors.h" |
bikeNomad | 24:feb1dae0403a | 4 | #include "TSISensor.h" |
bikeNomad | 22:abfed71656bd | 5 | |
bikeNomad | 23:33df42ff2541 | 6 | // per LED: 3 * 20 mA = 60mA max |
bikeNomad | 23:33df42ff2541 | 7 | // 60 LEDs: 60 * 60mA = 3600 mA max |
bikeNomad | 25:751c89f7e654 | 8 | // 120 LEDs: 7200 mA max |
bikeNomad | 22:abfed71656bd | 9 | unsigned const nLEDs = MAX_LEDS_PER_STRIP; |
bikeNomad | 22:abfed71656bd | 10 | |
bikeNomad | 22:abfed71656bd | 11 | // I/O pin usage |
bikeNomad | 22:abfed71656bd | 12 | // PTD0 TPM0 CH0 monitor |
bikeNomad | 22:abfed71656bd | 13 | // PTD1 TPM0 CH1 monitor |
bikeNomad | 22:abfed71656bd | 14 | // PTD2 data output |
bikeNomad | 22:abfed71656bd | 15 | // PTD3 debug output |
bikeNomad | 22:abfed71656bd | 16 | |
bikeNomad | 25:751c89f7e654 | 17 | unsigned const DATA_OUT_PIN1 = 2; // PTD2 |
bikeNomad | 25:751c89f7e654 | 18 | unsigned const DATA_OUT_PIN2 = 3; // PTD3 |
bikeNomad | 22:abfed71656bd | 19 | |
bikeNomad | 22:abfed71656bd | 20 | Serial pc(USBTX, USBRX); |
bikeNomad | 25:751c89f7e654 | 21 | Timer timeRunning; |
bikeNomad | 22:abfed71656bd | 22 | |
bikeNomad | 24:feb1dae0403a | 23 | TSISensor touchSensor; |
bikeNomad | 24:feb1dae0403a | 24 | Ticker touchTicker; |
bikeNomad | 24:feb1dae0403a | 25 | float touchPercentage; |
bikeNomad | 25:751c89f7e654 | 26 | unsigned frames; |
bikeNomad | 25:751c89f7e654 | 27 | |
bikeNomad | 25:751c89f7e654 | 28 | float const minBrite = 0.2; |
bikeNomad | 25:751c89f7e654 | 29 | float const maxBrite = 0.5; |
bikeNomad | 24:feb1dae0403a | 30 | float brite; |
bikeNomad | 24:feb1dae0403a | 31 | |
bikeNomad | 24:feb1dae0403a | 32 | void readTouchSensor() |
bikeNomad | 24:feb1dae0403a | 33 | { |
bikeNomad | 24:feb1dae0403a | 34 | touchPercentage *= 0.9; |
bikeNomad | 24:feb1dae0403a | 35 | touchPercentage += touchSensor.readPercentage() * 0.1; |
bikeNomad | 25:751c89f7e654 | 36 | brite = minBrite + (maxBrite - minBrite) * touchPercentage; |
bikeNomad | 24:feb1dae0403a | 37 | } |
bikeNomad | 24:feb1dae0403a | 38 | |
bikeNomad | 22:abfed71656bd | 39 | // @brief sets different colors in each of the LEDs of a strip |
bikeNomad | 22:abfed71656bd | 40 | // @param strip the light strip |
bikeNomad | 22:abfed71656bd | 41 | // @param sat saturation, 0.0 - 1.0 |
bikeNomad | 22:abfed71656bd | 42 | // @param brite brightness, 0.0 - 1.0 |
bikeNomad | 22:abfed71656bd | 43 | // @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees |
bikeNomad | 22:abfed71656bd | 44 | static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift) |
bikeNomad | 22:abfed71656bd | 45 | { |
bikeNomad | 22:abfed71656bd | 46 | unsigned nLEDs = strip.numPixels(); |
bikeNomad | 22:abfed71656bd | 47 | for (unsigned i = 0; i < nLEDs; i++) { |
bikeNomad | 22:abfed71656bd | 48 | uint8_t r, g, b; |
bikeNomad | 22:abfed71656bd | 49 | float hue = ((float)i / (float)nLEDs) + hueShift; |
bikeNomad | 22:abfed71656bd | 50 | HSBtoRGB(hue, sat, brite, &r, &g, &b); |
bikeNomad | 22:abfed71656bd | 51 | strip.setPixelColor(i, LedStrip::Color(r, g, b)); |
bikeNomad | 22:abfed71656bd | 52 | } |
bikeNomad | 22:abfed71656bd | 53 | strip.show(); |
bikeNomad | 22:abfed71656bd | 54 | } |
bikeNomad | 20:b9d76e567637 | 55 | |
bikeNomad | 24:feb1dae0403a | 56 | static void showSolidColor(WS2811 &strip, uint8_t r, uint8_t g, uint8_t b) |
bikeNomad | 24:feb1dae0403a | 57 | { |
bikeNomad | 24:feb1dae0403a | 58 | unsigned nLEDs = strip.numPixels(); |
bikeNomad | 24:feb1dae0403a | 59 | for (unsigned i = 0; i < nLEDs; i++) { |
bikeNomad | 24:feb1dae0403a | 60 | strip.setPixelColor(i, LedStrip::Color(r, g, b)); |
bikeNomad | 24:feb1dae0403a | 61 | } |
bikeNomad | 24:feb1dae0403a | 62 | strip.show(); |
bikeNomad | 24:feb1dae0403a | 63 | } |
bikeNomad | 24:feb1dae0403a | 64 | |
bikeNomad | 22:abfed71656bd | 65 | int main(void) |
bikeNomad | 22:abfed71656bd | 66 | { |
bikeNomad | 22:abfed71656bd | 67 | pc.baud(115200); |
bikeNomad | 25:751c89f7e654 | 68 | WS2811 lightStrip1(nLEDs, DATA_OUT_PIN1); |
bikeNomad | 25:751c89f7e654 | 69 | WS2811 lightStrip2(nLEDs, DATA_OUT_PIN2); |
bikeNomad | 22:abfed71656bd | 70 | |
bikeNomad | 24:feb1dae0403a | 71 | touchTicker.attach(&readTouchSensor, 0.1); |
bikeNomad | 25:751c89f7e654 | 72 | lightStrip1.begin(); |
bikeNomad | 25:751c89f7e654 | 73 | lightStrip2.begin(); |
bikeNomad | 22:abfed71656bd | 74 | |
bikeNomad | 23:33df42ff2541 | 75 | float rainbowPeriod = 1 * 1.0e6; // usec |
bikeNomad | 23:33df42ff2541 | 76 | float sat = 1.0; |
bikeNomad | 22:abfed71656bd | 77 | |
bikeNomad | 23:33df42ff2541 | 78 | timeRunning.start(); |
bikeNomad | 23:33df42ff2541 | 79 | bool printed = false; |
bikeNomad | 22:abfed71656bd | 80 | |
bikeNomad | 24:feb1dae0403a | 81 | uint8_t r =0; |
bikeNomad | 24:feb1dae0403a | 82 | uint8_t g =0; |
bikeNomad | 24:feb1dae0403a | 83 | uint8_t b =0; |
bikeNomad | 24:feb1dae0403a | 84 | for (;;) { |
bikeNomad | 25:751c89f7e654 | 85 | if (r < 40) |
bikeNomad | 24:feb1dae0403a | 86 | r++; |
bikeNomad | 25:751c89f7e654 | 87 | else if (g < 40) |
bikeNomad | 24:feb1dae0403a | 88 | g++; |
bikeNomad | 25:751c89f7e654 | 89 | else if (b < 40) |
bikeNomad | 24:feb1dae0403a | 90 | b++; |
bikeNomad | 24:feb1dae0403a | 91 | else { |
bikeNomad | 24:feb1dae0403a | 92 | unsigned running = timeRunning.read_us(); |
bikeNomad | 24:feb1dae0403a | 93 | pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running); |
bikeNomad | 24:feb1dae0403a | 94 | break; |
bikeNomad | 24:feb1dae0403a | 95 | } |
bikeNomad | 24:feb1dae0403a | 96 | |
bikeNomad | 24:feb1dae0403a | 97 | wait(0.1); |
bikeNomad | 25:751c89f7e654 | 98 | showSolidColor(lightStrip1, r, g, b); |
bikeNomad | 25:751c89f7e654 | 99 | showSolidColor(lightStrip2, r, g, b); |
bikeNomad | 25:751c89f7e654 | 100 | WS2811::startDMA(); |
bikeNomad | 25:751c89f7e654 | 101 | |
bikeNomad | 24:feb1dae0403a | 102 | frames++; |
bikeNomad | 24:feb1dae0403a | 103 | } |
bikeNomad | 24:feb1dae0403a | 104 | |
bikeNomad | 24:feb1dae0403a | 105 | timeRunning.reset(); |
bikeNomad | 24:feb1dae0403a | 106 | frames = 0; |
bikeNomad | 24:feb1dae0403a | 107 | |
bikeNomad | 22:abfed71656bd | 108 | for (;;) { |
bikeNomad | 23:33df42ff2541 | 109 | unsigned running = timeRunning.read_us(); |
bikeNomad | 23:33df42ff2541 | 110 | float hueShift = running / rainbowPeriod; |
bikeNomad | 23:33df42ff2541 | 111 | if (!printed && running >= 10000000U) { |
bikeNomad | 23:33df42ff2541 | 112 | pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running); |
bikeNomad | 23:33df42ff2541 | 113 | printed = true; |
bikeNomad | 23:33df42ff2541 | 114 | } |
bikeNomad | 25:751c89f7e654 | 115 | showRainbow(lightStrip1, sat, brite, hueShift); |
bikeNomad | 25:751c89f7e654 | 116 | showRainbow(lightStrip2, sat, brite, hueShift + 0.5); |
bikeNomad | 25:751c89f7e654 | 117 | WS2811::startDMA(); |
bikeNomad | 25:751c89f7e654 | 118 | |
bikeNomad | 23:33df42ff2541 | 119 | frames ++; |
bikeNomad | 23:33df42ff2541 | 120 | } |
bikeNomad | 22:abfed71656bd | 121 | } |
bikeNomad | 22:abfed71656bd | 122 |