hyperion.ng/libsrc/leddevice/dev_spi/LedDeviceAPA102.cpp
2020-08-08 00:21:19 +02:00

49 lines
1.2 KiB
C++

#include "LedDeviceAPA102.h"
LedDeviceAPA102::LedDeviceAPA102(const QJsonObject &deviceConfig)
: ProviderSpi(deviceConfig)
{
}
LedDevice* LedDeviceAPA102::construct(const QJsonObject &deviceConfig)
{
return new LedDeviceAPA102(deviceConfig);
}
bool LedDeviceAPA102::init(const QJsonObject &deviceConfig)
{
bool isInitOK = false;
// Initialise sub-class
if ( ProviderSpi::init(deviceConfig) )
{
const unsigned int startFrameSize = 4;
const unsigned int endFrameSize = qMax<unsigned int>(((_ledCount + 15) / 16), 4);
const unsigned int APAbufferSize = (_ledCount * 4) + startFrameSize + endFrameSize;
_ledBuffer.resize(APAbufferSize, 0xFF);
_ledBuffer[0] = 0x00;
_ledBuffer[1] = 0x00;
_ledBuffer[2] = 0x00;
_ledBuffer[3] = 0x00;
isInitOK = true;
}
return isInitOK;
}
int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues)
{
for (signed iLed=0; iLed < static_cast<int>( _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());
}