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:
- 25:751c89f7e654
- Parent:
- 24:feb1dae0403a
- Child:
- 27:88c2abdf5eb9
--- a/main.cpp Thu Jan 02 11:26:44 2014 +0000 +++ b/main.cpp Thu Jan 02 19:42:14 2014 +0000 @@ -5,6 +5,7 @@ // 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 @@ -13,24 +14,26 @@ // PTD2 data output // PTD3 debug output -unsigned const DATA_OUT_PIN = 2; // PTD2 +unsigned const DATA_OUT_PIN1 = 2; // PTD2 +unsigned const DATA_OUT_PIN2 = 3; // PTD3 Serial pc(USBTX, USBRX); +Timer timeRunning; TSISensor touchSensor; Ticker touchTicker; float touchPercentage; -float const minBrite = 0.1; -float const maxBrite = 0.7; +unsigned frames; + +float const minBrite = 0.2; +float const maxBrite = 0.5; float brite; void readTouchSensor() { touchPercentage *= 0.9; touchPercentage += touchSensor.readPercentage() * 0.1; - brite = maxBrite * touchPercentage; - if (brite < minBrite) - brite = minBrite; + brite = minBrite + (maxBrite - minBrite) * touchPercentage; } // @brief sets different colors in each of the LEDs of a strip @@ -62,28 +65,28 @@ int main(void) { pc.baud(115200); - WS2811 lightStrip(nLEDs, DATA_OUT_PIN); + WS2811 lightStrip1(nLEDs, DATA_OUT_PIN1); + WS2811 lightStrip2(nLEDs, DATA_OUT_PIN2); touchTicker.attach(&readTouchSensor, 0.1); - lightStrip.begin(); + lightStrip1.begin(); + lightStrip2.begin(); float rainbowPeriod = 1 * 1.0e6; // usec float sat = 1.0; - Timer timeRunning; timeRunning.start(); bool printed = false; - unsigned frames = 0; uint8_t r =0; uint8_t g =0; uint8_t b =0; for (;;) { - if (r < 255) + if (r < 40) r++; - else if (g < 255) + else if (g < 40) g++; - else if (b < 255) + else if (b < 40) b++; else { unsigned running = timeRunning.read_us(); @@ -92,7 +95,10 @@ } wait(0.1); - showSolidColor(lightStrip, r, g, b); + showSolidColor(lightStrip1, r, g, b); + showSolidColor(lightStrip2, r, g, b); + WS2811::startDMA(); + frames++; } @@ -106,7 +112,10 @@ pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running); printed = true; } - showRainbow(lightStrip, sat, brite, hueShift); + showRainbow(lightStrip1, sat, brite, hueShift); + showRainbow(lightStrip2, sat, brite, hueShift + 0.5); + WS2811::startDMA(); + frames ++; } }