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: DrawingManager.cpp
- Revision:
- 4:b521815f2657
- Parent:
- 3:e5ea80fae61d
- Child:
- 5:910909f34907
--- a/DrawingManager.cpp Mon Aug 31 09:03:15 2015 +0000 +++ b/DrawingManager.cpp Mon Aug 31 15:21:47 2015 +0000 @@ -1,5 +1,5 @@ // -// Drawing Manager for Pancake Drawbot +// Drawing Manager for LightWall // Rob Dobson 2015 // @@ -12,7 +12,7 @@ isBusy = false; } -void DrawingManager::init(int numLeds, int splitPoint) +void DrawingManager::Init(int numLeds, int splitPoint) { pLedStrip = new ledstrip(numLeds, splitPoint); Thread::wait(100); @@ -21,18 +21,58 @@ } -char* DrawingManager::start(const unsigned char* cmdBuf, int cmdLen) +void DrawingManager::Clear() +{ +// printf("CLEAR\r\n"); + if (pLedStrip) + pLedStrip->Clear(); +} + +void DrawingManager::RawFill(char* args, unsigned char* payload, int payloadLen, int payloadOffset) { - if (!pLedStrip) - return "NOINIT"; - if (isBusy) - return "BUSY"; - isBusy = true; - char* respStr = cmdmsg::Interpret(cmdBuf, cmdLen, pLedStrip); - isBusy = false; - return respStr; +// 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::service() +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(); +} + +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; +}