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Added the apa102 engine class

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Former-commit-id: 03e11a19aed2ae782c5d134e1f4fcf9faea1969e
This commit is contained in:
wayland 2014-12-03 09:35:10 +01:00
parent 205fe8ab66
commit 4b716a9e2f
1 changed files with 47 additions and 0 deletions
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47
libsrc/leddevice/LedDeviceAPA102.cpp Normal file
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// STL includes
#include <cstring>
#include <cstdio>
#include <iostream>
// Linux includes
#include <fcntl.h>
#include <sys/ioctl.h>
// hyperion local includes
#include "LedDeviceAPA102.h"
LedDeviceAPA102::LedDeviceAPA102(const std::string& outputDevice, const unsigned baudrate) :
LedSpiDevice(outputDevice, baudrate, 500000),
mLedCount(0)
{
// empty
}
int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues)
{
mLedCount = ledValues.size();
const unsigned dataLen = 8 + (ledValues.size() * (sizeof(ColorRgb) + 1));
const uint8_t data[dataLen] = { 0x00, 0x00, 0x00, 0x00 };
int position = 4;
for (ColorRgb* rgb : ledValues ){
data[i++] = 0xFF;
data[i++] = rgb.red;
data[i++] = rgb.green;
data[i++] = rgb.blue;
}
// Write end frame
data[i++] = 0xFF;
data[i++] = 0xFF;
data[i++] = 0xFF;
data[i++] = 0xFF;
return writeBytes(dataLen, data);
}
int LedDeviceAPA102::switchOff()
{
return write(std::vector<ColorRgb>(mLedCount, ColorRgb{0,0,0}));
}