Rob Dobson / Mbed 2 deprecated SpideyWallWeb

Spidey Wall is the name for a physical wall lit up by multiple addressable LED strips. This program is an LPC1768 web server to control the wall from a browser.

Dependencies:   EthernetInterfacePlusHostname RdWebServer mbed-rtos mbed

This project is part of a Light-Wall using addressable LED strips (WS2801). I have published a few posts on my blog about the construction of the wall and building a game to play on it (PacMan). I have also had a guest post from a friend who has set his children the task of producing some interesting animations. The original post is http://robdobson.com/2015/07/spidey-wall/ /media/uploads/Bobty/20130722_112945_img_9674_62895-1184x1579.jpg

So far, however, I hadn't fully connected the physical (and electronic) wall with the web-browser creations to drive it. This project is hopefully the final link. A fast and reliable web server using REST commands to drive the 1686 LEDs in the Spidey Wall from code running in a browser (say on an iPad while you are playing a game).

The approach taken here results in the ability to control the RGB values of all 1686 LEDs at a rate of 20 frames per second.

A blog post describing the whole thing is here:

http://robdobson.com/2015/08/a-reliable-mbed-webserver/

Diff: ledstrip.cpp

Revision:
3:e5ea80fae61d
Parent:
2:99eb4c6e9ea4
Child:
4:b521815f2657
--- a/ledstrip.cpp	Sat Aug 29 05:33:30 2015 +0000
+++ b/ledstrip.cpp	Mon Aug 31 09:03:15 2015 +0000
@@ -146,6 +146,28 @@
     unsigned char* pBuf = GetBuffer() + pos;
     memcpy(pBuf, pLedVals, numLeds * mColoursPerLed);
 }
+
+void ledstrip::HsvFill(int startLed, int numLeds, const unsigned char* pLedVals)
+{
+    if ((startLed < 0) || (startLed >= mLedsInStrip))
+        return;
+    if (numLeds >= mLedsInStrip - startLed)
+        numLeds = mLedsInStrip - startLed;
+    int pos = startLed * mColoursPerLed;
+    unsigned char* pBuf = GetBuffer() + pos;
+    
+    // Copy over the values converting each to RGB
+    for (int i = 0; i < numLeds; i++)
+    {
+        RgbColor colrVal = HsvToRgb(HsvColor(pLedVals[0],pLedVals[1] & 0xf0, (pLedVals[1] << 4) & 0xf0));
+        pBuf[pos] = colrVal.r;
+        pBuf[pos+1] = colrVal.g;
+        pBuf[pos+2] = colrVal.b;
+//        printf("HSV %d %d %d RGB %d %d %d\r\n", pLedVals[0],pLedVals[1] & 0xf0, (pLedVals[1] << 4) & 0xf0, colrVal.r, colrVal.g, colrVal.b);
+        pos += mColoursPerLed;
+        pLedVals += 2;
+    }
+}
     
 // Fill - solid colour
 void ledstrip::Fill(int startLed, int numLeds, 
@@ -236,7 +258,7 @@
     // Check if busy
     while (isr0Busy || isr1Busy)
         wait_us(2000);
-    wait_us(2000);
+//    wait_us(2000);
     
     // Set up start points
     mCurPos0 = 0;