hyperion.ng/libsrc/leddevice/LedDeviceLpd6803.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

35 lines
1016 B
C++

#include "LedDeviceLpd6803.h"
LedDeviceLpd6803::LedDeviceLpd6803(const Json::Value &deviceConfig)
: ProviderSpi(deviceConfig)
{
}
LedDevice* LedDeviceLpd6803::construct(const Json::Value &deviceConfig)
{
return new LedDeviceLpd6803(deviceConfig);
}
int LedDeviceLpd6803::write(const std::vector<ColorRgb> &ledValues)
{
unsigned messageLength = 4 + 2*_ledCount + _ledCount/8 + 1;
// Reconfigure if the current connfiguration does not match the required configuration
if (messageLength != _ledBuffer.size())
{
// Initialise the buffer
_ledBuffer.resize(messageLength, 0x00);
}
// Copy the colors from the ColorRgb vector to the Ldp6803 data vector
for (unsigned iLed=0; iLed<(unsigned)_ledCount; ++iLed)
{
const ColorRgb& rgb = ledValues[iLed];
_ledBuffer[4 + 2 * iLed] = 0x80 | ((rgb.red & 0xf8) >> 1) | (rgb.green >> 6);
_ledBuffer[5 + 2 * iLed] = ((rgb.green & 0x38) << 2) | (rgb.blue >> 3);
}
// Write the data
return (writeBytes(_ledBuffer.size(), _ledBuffer.data()) < 0) ? -1 : 0;
}