hyperion.ng/libsrc/leddevice/dev_spi/LedDeviceLpd6803.cpp
2020-08-08 00:21:19 +02:00

43 lines
1.1 KiB
C++

#include "LedDeviceLpd6803.h"
LedDeviceLpd6803::LedDeviceLpd6803(const QJsonObject &deviceConfig)
: ProviderSpi(deviceConfig)
{
}
LedDevice* LedDeviceLpd6803::construct(const QJsonObject &deviceConfig)
{
return new LedDeviceLpd6803(deviceConfig);
}
bool LedDeviceLpd6803::init(const QJsonObject &deviceConfig)
{
bool isInitOK = false;
// Initialise sub-class
if ( ProviderSpi::init(deviceConfig) )
{
unsigned messageLength = 4 + 2*_ledCount + _ledCount/8 + 1;
// Initialise the buffer
_ledBuffer.resize(messageLength, 0x00);
isInitOK = true;
}
return isInitOK;
}
int LedDeviceLpd6803::write(const std::vector<ColorRgb> &ledValues)
{
// Copy the colors from the ColorRgb vector to the Ldp6803 data vector
for (unsigned iLed=0; iLed<(unsigned)_ledCount; ++iLed)
{
const ColorRgb& color = ledValues[iLed];
_ledBuffer[4 + 2 * iLed] = 0x80 | ((color.red & 0xf8) >> 1) | (color.green >> 6);
_ledBuffer[5 + 2 * iLed] = ((color.green & 0x38) << 2) | (color.blue >> 3);
}
// Write the data
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}