hyperion.ng/libsrc/leddevice/LedDeviceAPA102.cpp
redPanther d6a34edfb2 Leddevice refactoring the next part (#253)
* add general switchOff

* refactoring of leddevices regarding ledcount and switchoff

* remove obsolete includes
2016-09-23 08:49:22 +02:00

38 lines
1.0 KiB
C++

#include "LedDeviceAPA102.h"
LedDeviceAPA102::LedDeviceAPA102(const Json::Value &deviceConfig)
: ProviderSpi(deviceConfig)
{
_latchTime_ns = 500000; // fixed latchtime
}
LedDevice* LedDeviceAPA102::construct(const Json::Value &deviceConfig)
{
return new LedDeviceAPA102(deviceConfig);
}
int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues)
{
const unsigned int startFrameSize = 4;
const unsigned int endFrameSize = std::max<unsigned int>(((_ledCount + 15) / 16), 4);
const unsigned int APAbufferSize = (_ledCount * 4) + startFrameSize + endFrameSize;
if(_ledBuffer.size() != APAbufferSize){
_ledBuffer.resize(APAbufferSize, 0xFF);
_ledBuffer[0] = 0x00;
_ledBuffer[1] = 0x00;
_ledBuffer[2] = 0x00;
_ledBuffer[3] = 0x00;
}
for (signed iLed=0; iLed < _ledCount; ++iLed) {
const ColorRgb& rgb = ledValues[iLed];
_ledBuffer[4+iLed*4] = 0xFF;
_ledBuffer[4+iLed*4+1] = rgb.red;
_ledBuffer[4+iLed*4+2] = rgb.green;
_ledBuffer[4+iLed*4+3] = rgb.blue;
}
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}