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/

ledstrip.h@6:8df79fe1afcd, 2015-09-03 (annotated)

Committer:
Bobty
Date:
Thu Sep 03 20:17:23 2015 +0000
Revision:
6:8df79fe1afcd
Parent:
4:b521815f2657 
Fixed an unforeseen problem with messages not aligned on RGB boundaries; Fixed potential hanging pointer problem in colourconverters; Changed Idle screen to a set of colourful snakes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 0:887096209439 1 #ifndef LEDSTRIP__H
Bobty 0:887096209439 2 #define LEDSTRIP__H
Bobty 0:887096209439 3
Bobty 4:b521815f2657 4 // LED Strip using WS2801 with two ISRs for two SPI connected
Bobty 4:b521815f2657 5 // LED strips running in parallel
Bobty 4:b521815f2657 6 // Rob Dobson 2013-2014
Bobty 4:b521815f2657 7
Bobty 0:887096209439 8 #include "mbed.h"
Bobty 0:887096209439 9
Bobty 0:887096209439 10 class ledstrip
Bobty 0:887096209439 11 {
Bobty 0:887096209439 12 private:
Bobty 0:887096209439 13 unsigned char* mpLedValuesA;
Bobty 0:887096209439 14 unsigned char* mpLedValuesB;
Bobty 0:887096209439 15 unsigned char* mpCurLedValues;
Bobty 0:887096209439 16 int mLedsInStrip;
Bobty 0:887096209439 17 int mSplitPoint;
Bobty 0:887096209439 18 int mLedsBufSize;
Bobty 0:887096209439 19 SPI* mpSPI0;
Bobty 0:887096209439 20 SPI* mpSPI1;
Bobty 0:887096209439 21
Bobty 0:887096209439 22 public:
Bobty 0:887096209439 23 static const int mColoursPerLed = 3;
Bobty 0:887096209439 24
Bobty 0:887096209439 25 public:
Bobty 0:887096209439 26 ledstrip(int length, int splitPoint);
Bobty 0:887096209439 27 ~ledstrip();
Bobty 0:887096209439 28 unsigned char* GetBuffer();
Bobty 0:887096209439 29 int GetBufferSizeinBytes();
Bobty 0:887096209439 30 bool Resize(int length, int splitPoint);
Bobty 0:887096209439 31 bool IsBusy();
Bobty 0:887096209439 32 int GetNumLeds()
Bobty 0:887096209439 33 {
Bobty 0:887096209439 34 return mLedsInStrip;
Bobty 0:887096209439 35 }
Bobty 0:887096209439 36 void Clear();
Bobty 1:362331cec9b7 37 void RawFill(int startLed, int numLeds, const unsigned char* pLedVals);
Bobty 3:e5ea80fae61d 38 void HsvFill(int startLed, int numLeds, const unsigned char* pLedVals);
Bobty 0:887096209439 39 void Fill(int startLed, int numLeds,
Bobty 0:887096209439 40 int r1, int g1, int b1,
Bobty 0:887096209439 41 int r2, int g2, int b2);
Bobty 0:887096209439 42 void Fill(int startLed, int numLeds,
Bobty 0:887096209439 43 int r1, int g1, int b1);
Bobty 0:887096209439 44 void ShowLeds();
Bobty 0:887096209439 45
Bobty 0:887096209439 46 };
Bobty 0:887096209439 47
Bobty 0:887096209439 48 #endif