Rob Dobson
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/ 
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.h
- Revision:
- 0:887096209439
- Child:
- 1:362331cec9b7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ledstrip.h Tue Aug 18 16:03:29 2015 +0000
@@ -0,0 +1,42 @@
+#ifndef LEDSTRIP__H
+#define LEDSTRIP__H
+
+#include "mbed.h"
+
+class ledstrip
+{
+ private:
+ unsigned char* mpLedValuesA;
+ unsigned char* mpLedValuesB;
+ unsigned char* mpCurLedValues;
+ int mLedsInStrip;
+ int mSplitPoint;
+ int mLedsBufSize;
+ SPI* mpSPI0;
+ SPI* mpSPI1;
+
+ public:
+ static const int mColoursPerLed = 3;
+
+ public:
+ ledstrip(int length, int splitPoint);
+ ~ledstrip();
+ unsigned char* GetBuffer();
+ int GetBufferSizeinBytes();
+ bool Resize(int length, int splitPoint);
+ bool IsBusy();
+ int GetNumLeds()
+ {
+ return mLedsInStrip;
+ }
+ void Clear();
+ void Fill(int startLed, int numLeds,
+ int r1, int g1, int b1,
+ int r2, int g2, int b2);
+ void Fill(int startLed, int numLeds,
+ int r1, int g1, int b1);
+ void ShowLeds();
+
+};
+
+#endif