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Update LedDeviceAPA102.cpp

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Problem with endFrame was not only endFrameSize, but ledValue index too

Former-commit-id: cc14e9d440a1d27f6a51c18f92aeba1f438c9c01
This commit is contained in:
AEtHeLsYn 2015-10-30 20:07:21 +01:00
parent 6230f1dfe7
commit acc1a1b397
1 changed files with 3 additions and 2 deletions
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5
libsrc/leddevice/LedDeviceAPA102.cpp
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@ -3,6 +3,7 @@
#include <cstring> #include <cstring>
#include <cstdio> #include <cstdio>
#include <iostream> #include <iostream>
#include <algorithm>
// Linux includes // Linux includes
#include <fcntl.h> #include <fcntl.h>
@ -21,14 +22,14 @@ LedDeviceAPA102::LedDeviceAPA102(const std::string& outputDevice, const unsigned
int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues) int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues)
{ {
const unsigned int startFrameSize = 4; const unsigned int startFrameSize = 4;
const unsigned int endFrameSize = (ledValues.size() + 63) / 64 * 4; const unsigned int endFrameSize = std::max<unsigned int>(((ledValues.size() + 15) / 16), 4);
const unsigned int mLedCount = (ledValues.size() * 4) + startFrameSize + endFrameSize; const unsigned int mLedCount = (ledValues.size() * 4) + startFrameSize + endFrameSize;
if(_ledBuffer.size() != mLedCount){ if(_ledBuffer.size() != mLedCount){
_ledBuffer.resize(mLedCount, 0x00); _ledBuffer.resize(mLedCount, 0x00);
} }
for (unsigned iLed=1; iLed<=ledValues.size(); ++iLed) { for (unsigned iLed=1; iLed<=ledValues.size(); ++iLed) {
const ColorRgb& rgb = ledValues[iLed]; const ColorRgb& rgb = ledValues[iLed-1];
_ledBuffer[iLed*4] = 0xFF; _ledBuffer[iLed*4] = 0xFF;
_ledBuffer[iLed*4+1] = rgb.red; _ledBuffer[iLed*4+1] = rgb.red;
_ledBuffer[iLed*4+2] = rgb.green; _ledBuffer[iLed*4+2] = rgb.green;