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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.cpp
- Revision:
- 3:e5ea80fae61d
- Parent:
- 2:99eb4c6e9ea4
- Child:
- 4:b521815f2657
diff -r 99eb4c6e9ea4 -r e5ea80fae61d ledstrip.cpp --- a/ledstrip.cpp Sat Aug 29 05:33:30 2015 +0000 +++ b/ledstrip.cpp Mon Aug 31 09:03:15 2015 +0000 @@ -146,6 +146,28 @@ unsigned char* pBuf = GetBuffer() + pos; memcpy(pBuf, pLedVals, numLeds * mColoursPerLed); } + +void ledstrip::HsvFill(int startLed, int numLeds, const unsigned char* pLedVals) +{ + if ((startLed < 0) || (startLed >= mLedsInStrip)) + return; + if (numLeds >= mLedsInStrip - startLed) + numLeds = mLedsInStrip - startLed; + int pos = startLed * mColoursPerLed; + unsigned char* pBuf = GetBuffer() + pos; + + // Copy over the values converting each to RGB + for (int i = 0; i < numLeds; i++) + { + RgbColor colrVal = HsvToRgb(HsvColor(pLedVals[0],pLedVals[1] & 0xf0, (pLedVals[1] << 4) & 0xf0)); + pBuf[pos] = colrVal.r; + pBuf[pos+1] = colrVal.g; + pBuf[pos+2] = colrVal.b; +// printf("HSV %d %d %d RGB %d %d %d\r\n", pLedVals[0],pLedVals[1] & 0xf0, (pLedVals[1] << 4) & 0xf0, colrVal.r, colrVal.g, colrVal.b); + pos += mColoursPerLed; + pLedVals += 2; + } +} // Fill - solid colour void ledstrip::Fill(int startLed, int numLeds, @@ -236,7 +258,7 @@ // Check if busy while (isr0Busy || isr1Busy) wait_us(2000); - wait_us(2000); +// wait_us(2000); // Set up start points mCurPos0 = 0;