Ned Konz / Mbed 2 deprecated Multi_WS2811_test

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 Heroic Robotics

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

/media/uploads/bikeNomad/img_0482.jpg

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.

Last commit 13 Jun 2015 by Ned Konz

Diff: main.cpp

Revision:
22:abfed71656bd
Parent:
21:4541da183397
Child:
23:33df42ff2541
diff -r 4541da183397 -r abfed71656bd main.cpp
--- a/main.cpp	Thu Jan 02 00:50:09 2014 +0000
+++ b/main.cpp	Thu Jan 02 02:31:24 2014 +0000
@@ -1,74 +1,74 @@
-#include "mbed.h"
-#include "WS2811.h"
-#include "Colors.h"
-
-// per LED: 3x 20 mA = 60mA
-// 4x full brightness = 0.33A at 5V.
-unsigned const nLEDs = 40;
-
-// I/O pin usage
-// PTD0 TPM0 CH0 monitor
-// PTD1 TPM0 CH1 monitor
-// PTD2 data output
-// PTD3 debug output
-
-unsigned const DATA_OUT_PIN = 2; // PTD2
-
-Serial pc(USBTX, USBRX);
-
-// @brief sets different colors in each of the LEDs of a strip
-// @param strip the light strip
-// @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
-void showRainbow(WS2811 &strip, float sat, float brite, float hueShift)
-{
-    unsigned nLEDs = strip.numPixels();
-    for (unsigned i = 0; i < nLEDs; i++) {
-        uint8_t r, g, b;
-        float hue = ((float)i / (float)nLEDs) + hueShift;
-        HSBtoRGB(hue, sat, brite, &r, &g, &b);
-        strip.setPixelColor(i, LedStrip::Color(r, g, b));
-    }
-    strip.show();
-}
-
-void showTestPattern(WS2811 &strip)
-{
-    unsigned nLEDs = strip.numPixels();
-    for (unsigned i = 0; i < nLEDs; i++)
-    {
-        strip.setPixelColor(i, LedStrip::Color(0xff,0,0xAA));
-    }
-    strip.show();
-}
-
-int main(void)
-{
-    pc.baud(115200);
-    pc.printf("\r\nLEDs: %d\r\n", nLEDs);
-
-    WS2811 lightStrip(nLEDs, DATA_OUT_PIN);
-    Timer advance;
-    advance.start();
-
-    lightStrip.begin();
-
-    // time per LED is about 44 usec, with 310 usec gap between.
-    float sat = 1.0;
-    float brite = 0.25;
-    float hueShift = 0.0;
-    float hueShiftIncrement = 1.0 / (360.0 / nLEDs);
-
-    for (;;) {
-        advance.reset();
-
-        // showTestPattern(lightStrip);
-        showRainbow(lightStrip, sat, brite, hueShift);
-        hueShift += hueShiftIncrement;
-
-        while (advance.read_ms() < 100)
-            __NOP();
-   }
-}
+#include "mbed.h"
+#include "WS2811.h"
+#include "Colors.h"
+
+// per LED: 3x 20 mA = 60mA
+// 4x full brightness = 0.33A at 5V.
+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
+
+unsigned const DATA_OUT_PIN = 2; // PTD2
+
+Serial pc(USBTX, USBRX);
+
+// @brief sets different colors in each of the LEDs of a strip
+// @param strip the light strip
+// @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)
+{
+    unsigned nLEDs = strip.numPixels();
+    for (unsigned i = 0; i < nLEDs; i++) {
+        uint8_t r, g, b;
+        float hue = ((float)i / (float)nLEDs) + hueShift;
+        HSBtoRGB(hue, sat, brite, &r, &g, &b);
+        strip.setPixelColor(i, LedStrip::Color(r, g, b));
+    }
+    strip.show();
+}
 
+static void showTestPattern(WS2811 &strip)
+{
+    unsigned nLEDs = strip.numPixels();
+    for (unsigned i = 0; i < nLEDs; i++)
+    {
+        strip.setPixelColor(i, LedStrip::Color(0xff,0,0xAA));
+    }
+    strip.show();
+}
+
+int main(void)
+{
+    pc.baud(115200);
+    pc.printf("\r\nLEDs: %d\r\n", nLEDs);
+
+    WS2811 lightStrip(nLEDs, DATA_OUT_PIN);
+
+    lightStrip.begin();
+
+    float sat = 1.0;    // color saturation, 0.0 to 1.0
+    float brite = 0.1;  // 1.0 is full brightness, which is VERY bright!
+    float hueShift = 0.0;
+    float hueShiftIncrement = 1.0 / (360.0 / nLEDs);
+
+    Timer advance;
+    advance.start();
+
+    for (;;) {
+        advance.reset();
+
+        // showTestPattern(lightStrip);
+        showRainbow(lightStrip, sat, brite, hueShift);
+        hueShift += hueShiftIncrement;
+
+        while (advance.read_ms() < 100)
+            __NOP();
+   }
+}
+