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: Idler.cpp
- Revision:
- 5:910909f34907
- Child:
- 6:8df79fe1afcd
diff -r b521815f2657 -r 910909f34907 Idler.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Idler.cpp Tue Sep 01 15:53:52 2015 +0000 @@ -0,0 +1,49 @@ + +#include "Idler.h" + +DigitalOut* Idler::_pStatusLed = NULL; +bool Idler::_isIdle = true; +unsigned int Idler::_stepCount = 0; +DrawingManager* Idler::_pDrawingManager = NULL; +Ticker Idler::_idleTicker; +Timer Idler::_idleTimer; + +const int IDLE_TIMEOUT = 10; // N seconds of no REST commands -> idle + +Idler::Idler(DigitalOut* pStatusLed, DrawingManager* pDrawingManager) +{ + _pStatusLed = pStatusLed; + _pDrawingManager = pDrawingManager; + _idleTicker.attach(&tick, 0.1); +} + +void Idler::tick() +{ + // Check if idle + if (!_isIdle) + { + // Check time since last notIdle + if (_idleTimer.read() < IDLE_TIMEOUT) + return; + + // Now idle again + _idleTimer.stop(); + _isIdle = true; + } + + // Blink LED + *_pStatusLed = !(*_pStatusLed); + + // Step through display + _pDrawingManager->DisplayIdle(_stepCount); + _stepCount++; +} + +void Idler::notIdle() +{ + _isIdle = false; + *_pStatusLed = false; + _idleTimer.reset(); + _idleTimer.start(); + _stepCount = 0; +}