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/
DrawingManager.cpp
- Committer:
- Bobty
- Date:
- 2015-09-01
- Revision:
- 5:910909f34907
- Parent:
- 4:b521815f2657
- Child:
- 6:8df79fe1afcd
File content as of revision 5:910909f34907:
// // Drawing Manager for LightWall // Rob Dobson 2015 // #include "DrawingManager.h" #include "rtos.h" #include "colourconverters.h" DrawingManager::DrawingManager() { pLedStrip = NULL; isBusy = false; } void DrawingManager::Init(int numLeds, int splitPoint) { pLedStrip = new ledstrip(numLeds, splitPoint); Thread::wait(100); pLedStrip->Clear(); pLedStrip->ShowLeds(); } void DrawingManager::Clear() { // printf("CLEAR\r\n"); if (pLedStrip) pLedStrip->Clear(); } void DrawingManager::RawFill(char* args, unsigned char* payload, int payloadLen, int payloadOffset) { // printf("RAWFILL %s payloadLen %d, payloadOffset %d\r\n", args, payloadLen, payloadOffset); int startLed = GetIntFromNameValPair(args, "start=", -1); if (startLed != -1 && payloadLen > 0) { int numLeds = payloadLen / 3; int fromLed = startLed + (payloadOffset / 3); // printf("RAWFILL fromLed %d numLeds %d\r\n", fromLed, numLeds); pLedStrip->RawFill(fromLed, numLeds, payload); } } void DrawingManager::Fill(char* args) { // printf("FILL %s\r\n", args); int startLed = GetIntFromNameValPair(args, "start=", -1); int numLeds = GetIntFromNameValPair(args, "len=", -1); int r1 = GetIntFromNameValPair(args, "r1=", -1); int g1 = GetIntFromNameValPair(args, "g1=", -1); int b1 = GetIntFromNameValPair(args, "b1=", -1); int r2 = GetIntFromNameValPair(args, "r2=", -1); int g2 = GetIntFromNameValPair(args, "g2=", -1); int b2 = GetIntFromNameValPair(args, "b2=", -1); if (startLed != -1 && numLeds != -1 && r1 != -1 && g1 != -1 && b1 != -1) { if (r2 == -1 || g2 == -1 || b2 == -1) pLedStrip->Fill(startLed, numLeds, r1, g1, b1); else pLedStrip->Fill(startLed, numLeds, r1, g1, b1, r2, g2, b2); } } void DrawingManager::ShowLeds() { // printf("SHOWLEDS\r\n"); if (pLedStrip) pLedStrip->ShowLeds(); } void DrawingManager::DisplayIdle(unsigned int stepCount) { // Display a step in an auto sequence if (!pLedStrip) return; if (pLedStrip->IsBusy()) return; pLedStrip->Clear(); int ledsPerGroup = pLedStrip->GetNumLeds() / 10; for (int i = 0; i < pLedStrip->GetNumLeds(); i += ledsPerGroup) { RgbColor colrVal((stepCount * 7) + (i * 23) % 64, (stepCount * 17) + 77 + (i * 3) % 64, (stepCount * 37) + 117 + (i * 13) % 64); RgbColor colrVal2((stepCount * 17) + (i * 33) % 64, (stepCount * 3) + 13 + (i * 13) % 64, (stepCount * 77) + 11 + (i * 23) % 64); pLedStrip->Fill(i,ledsPerGroup,colrVal.r, colrVal.g, colrVal.b, colrVal2.r, colrVal2.g, colrVal2.b); } pLedStrip->ShowLeds(); } int DrawingManager::GetIntFromNameValPair(char* buf, char* name, int invalidVal) { int val = invalidVal; char* pFnd = strstr(buf, name); if (pFnd) val = atoi(pFnd + strlen(name)); return val; }