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

Files at this revision

API Documentation at this revision

Revision 24:feb1dae0403a, committed 2014-01-02

Comitter:
bikeNomad
Date:
Thu Jan 02 11:26:44 2014 +0000
Parent:
23:33df42ff2541
Child:
25:751c89f7e654
Commit message:
added R/G/B test at start; 50usec guardtime doesn't work for some reason.

Changed in this revision

TSI.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TSI.lib	Thu Jan 02 11:26:44 2014 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/mbed_official/code/TSI/#1a60ef257879

--- a/main.cpp	Thu Jan 02 10:30:25 2014 +0000
+++ b/main.cpp	Thu Jan 02 11:26:44 2014 +0000
@@ -1,6 +1,7 @@
 #include "mbed.h"
 #include "WS2811.h"
 #include "Colors.h"
+#include "TSISensor.h"
 
 // per LED: 3 * 20 mA = 60mA max
 // 60 LEDs: 60 * 60mA = 3600 mA max
@@ -16,6 +17,22 @@
 
 Serial pc(USBTX, USBRX);
 
+TSISensor touchSensor;
+Ticker touchTicker;
+float touchPercentage;
+float const minBrite = 0.1;
+float const maxBrite = 0.7;
+float brite;
+
+void readTouchSensor()
+{
+    touchPercentage *= 0.9;
+    touchPercentage += touchSensor.readPercentage() * 0.1;
+    brite = maxBrite * touchPercentage;
+    if (brite < minBrite)
+        brite = minBrite;
+}
+
 // @brief sets different colors in each of the LEDs of a strip
 // @param strip the light strip
 // @param sat saturation, 0.0 - 1.0
@@ -33,14 +50,23 @@
     strip.show();
 }
 
+static void showSolidColor(WS2811 &strip, uint8_t r, uint8_t g, uint8_t b)
+{
+    unsigned nLEDs = strip.numPixels();
+    for (unsigned i = 0; i < nLEDs; i++) {
+        strip.setPixelColor(i, LedStrip::Color(r, g, b));
+    }
+    strip.show();
+}
+
 int main(void)
 {
     pc.baud(115200);
     WS2811 lightStrip(nLEDs, DATA_OUT_PIN);
 
+    touchTicker.attach(&readTouchSensor, 0.1);
     lightStrip.begin();
 
-    float brite = 0.2;  // 1.0 is full brightness, which is VERY bright!
     float rainbowPeriod = 1 * 1.0e6; // usec
     float sat = 1.0;
 
@@ -49,6 +75,30 @@
     bool printed = false;
     unsigned frames = 0;
 
+    uint8_t r =0;
+    uint8_t g =0;
+    uint8_t b =0;
+    for (;;) {
+        if (r < 255)
+            r++;
+        else if (g < 255)
+            g++;
+        else if (b < 255)
+            b++;
+        else {
+            unsigned running = timeRunning.read_us();
+            pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running);
+            break;
+        }
+
+        wait(0.1);
+        showSolidColor(lightStrip, r, g, b);
+        frames++;
+    }
+
+    timeRunning.reset();
+    frames = 0;
+
     for (;;) {
         unsigned running = timeRunning.read_us();
         float hueShift = running / rainbowPeriod;