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:
20:b9d76e567637
Parent:
19:600deef36348
Child:
21:4541da183397
diff -r 600deef36348 -r b9d76e567637 main.cpp
--- a/main.cpp	Fri Dec 06 06:58:12 2013 +0000
+++ b/main.cpp	Sat Dec 21 04:32:21 2013 +0000
@@ -2,23 +2,71 @@
 #include "WS2811.h"
 #include "Colors.h"
 
+const unsigned nLEDs = 60*4;
+
+const PinName dataOutput = PTD2;
+const PinName sckOutput = PTD1;
+SPI_Type *spiPort = SPI0;
+
+DigitalOut debugOut(PTD3);
+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.begin();
+}
+void showTestPattern(WS2811 &strip)
+{
+    unsigned nLEDs = strip.numPixels();
+    for (unsigned i = 0; i < nLEDs; i++) {
+        strip.setPixelColor(i, LedStrip::Color(0xff,0,0x55));
+    }
+    strip.show();
+}
+void dump_spi_settings(SPI_Type const *spi)
+{
+    pc.printf("SPI C1=%#02x, C2=%#02x, BR=%d, S=%#02x, D=%#02x, M=%02x\r\n", spi->C1, spi->C2, spi->BR, spi->S, spi->D, spi->M);
+    pc.printf("DMA DSR_BCR=%#08lx, SAR=%p, DAR=%p, DCR=%#08lx\r\n",
+              (unsigned long)DMA0->DMA[0].DSR_BCR,
+              DMA0->DMA[0].SAR,
+              DMA0->DMA[0].DAR,
+              DMA0->DMA[0].DCR);
+}
+
 int main(void)
 {
-    const unsigned nLEDs = 60*4;
+    pc.baud(115200);
+    pc.printf("LEDs: %d\r\n", nLEDs);
+    debugOut = 0;
 
-    //                NLEDs  MOSI SCK
-    WS2811 lightStrip(nLEDs, PTD2, PTD3);
+    //                NLEDs  MOSI        SCK
+    WS2811 lightStrip(nLEDs, spiPort, dataOutput, sckOutput);
+
+    lightStrip.begin();
+    dump_spi_settings(spiPort);
 
-    float sat = 1.0;
-    float brite = 0.25;
-    for (float hueShift = 0.0; hueShift < 10.0; hueShift += 1.0 / 20) {
-        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);
-            lightStrip.setPixelColor(i, LedStrip::Color(r, g, b));
-        }
-        lightStrip.begin();
-        wait(0.5);
-    }
+    // float sat = 1.0;
+    // float brite = 0.25;
+    // float hueShift = 0.0;
+    // float hueShiftIncrement = 1.0 / (360.0 / 30.0);
+    for (;;) {
+        // debugOut = 1;
+        // showRainbow(lightStrip, sat, brite, hueShift);
+        showTestPattern(lightStrip);
+
+        // debugOut = 0;
+        // hueShift += hueShiftIncrement;
+   }
 }
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