hyperion.ng/libsrc/hyperion/LedDeviceWs2801.cpp

// STL includes
#include <cstring>
#include <cstdio>
#include <iostream>

// Linux includes
#include <fcntl.h>
#include <sys/ioctl.h>

// hyperion local includes
#include "LedDeviceWs2801.h"

LedDeviceWs2801::LedDeviceWs2801(const std::string& outputDevice, const unsigned baudrate) :
	LedSpiDevice(outputDevice, baudrate),
	mLedCount(0)
{
	// empty
}

int LedDeviceWs2801::write(const std::vector<RgbColor> &ledValues)
{
	mLedCount = ledValues.size();

	const unsigned dataLen = ledValues.size() * sizeof(RgbColor);
	const char * dataPtr   = reinterpret_cast<const char *>(ledValues.data());

	const int retVal = latch(dataLen, dataPtr, 500000);
	return retVal;
}

int LedDeviceWs2801::switchOff()
{
	return write(std::vector<RgbColor>(mLedCount, RgbColor::BLACK));
}