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.
Diff: main.cpp
- Revision:
- 32:115032de785f
- Parent:
- 30:52e9205a8059
- Child:
- 33:43b504e417e3
diff -r c9eee3a33826 -r 115032de785f main.cpp --- a/main.cpp Sat Jan 04 00:45:20 2014 +0000 +++ b/main.cpp Thu Jun 11 15:24:57 2015 +0000 @@ -1,24 +1,36 @@ #include "mbed.h" -#include "WS2811.h" #include "Colors.h" #include "TSISensor.h" #include "MMA8451Q.h" #define MMA8451_I2C_ADDRESS (0x1d<<1) +#define INSTANTIATE_TEMPLATES 1 +#include "WS2811.h" + +// I/O pin usage +// PTD0 TPM0 CH0 monitor +// PTD1 TPM0 CH1 monitor +// PTD2 data output for strip# 1 +// PTD3 data output for strip# 2 +// PTD4 blinking eyes output (HI = ON) + +unsigned const DATA_OUT_PIN1 = 2; // PTD2 +unsigned const DATA_OUT_PIN2 = 3; // PTD3 + +const unsigned MAX_LEDS_PER_STRIP = 32; + // per LED: 3 * 20 mA = 60mA max // 60 LEDs: 60 * 60mA = 3600 mA max // 120 LEDs: 7200 mA max unsigned const nLEDs = MAX_LEDS_PER_STRIP; -// I/O pin usage -// PTD0 TPM0 CH0 monitor -// PTD1 TPM0 CH1 monitor -// PTD2 data output -// PTD3 debug output +template class WS2811<MAX_LEDS_PER_STRIP>; -unsigned const DATA_OUT_PIN1 = 2; // PTD2 -unsigned const DATA_OUT_PIN2 = 3; // PTD3 +typedef WS2811<MAX_LEDS_PER_STRIP> MyWS2811; + +MyWS2811 lightStrip1(nLEDs, DATA_OUT_PIN1); +MyWS2811 lightStrip2(nLEDs, DATA_OUT_PIN2); Serial pc(USBTX, USBRX); Timer timeRunning; @@ -48,7 +60,7 @@ // @param sat saturation, 0.0 - 1.0 // @param brite brightness, 0.0 - 1.0 // @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees -static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift) +static void showRainbow(MyWS2811 &strip, float sat, float brite, float hueShift) { unsigned nLEDs = strip.numPixels(); for (unsigned i = 0; i < nLEDs; i++) { @@ -60,7 +72,7 @@ strip.show(); } -static void showSolidColor(WS2811 &strip, uint8_t r, uint8_t g, uint8_t b) +static void showSolidColor(MyWS2811 &strip, uint8_t r, uint8_t g, uint8_t b) { unsigned nLEDs = strip.numPixels(); for (unsigned i = 0; i < nLEDs; i++) { @@ -72,8 +84,7 @@ int main(void) { pc.baud(115200); - WS2811 lightStrip1(nLEDs, DATA_OUT_PIN1); - WS2811 lightStrip2(nLEDs, DATA_OUT_PIN2); + lightStrip1.begin(); lightStrip2.begin(); @@ -102,7 +113,7 @@ showSolidColor(lightStrip1, r, g, b); showSolidColor(lightStrip2, r, g, b); - WS2811::startDMA(); + MyWS2811::startDMA(); frames++; } @@ -121,7 +132,7 @@ readTouchSensor(); showRainbow(lightStrip1, sat, brite, abs(xyz[0])); showRainbow(lightStrip2, sat, brite, abs(xyz[1])); - WS2811::startDMA(); + MyWS2811::startDMA(); frames ++; }