hyperion.ng/libsrc/leddevice/LedDeviceLpd6803.cpp
penfold42 ec283cc22b fix for LPD8806 issue (#315)
make writebytes call consistent with other devices
2016-12-05 22:46:04 +01:00

39 lines
1014 B
C++

#include "LedDeviceLpd6803.h"
LedDeviceLpd6803::LedDeviceLpd6803(const QJsonObject &deviceConfig)
: ProviderSpi()
{
_deviceReady = init(deviceConfig);
}
LedDevice* LedDeviceLpd6803::construct(const QJsonObject &deviceConfig)
{
return new LedDeviceLpd6803(deviceConfig);
}
bool LedDeviceLpd6803::init(const QJsonObject &deviceConfig)
{
ProviderSpi::init(deviceConfig);
unsigned messageLength = 4 + 2*_ledCount + _ledCount/8 + 1;
// Initialise the buffer
_ledBuffer.resize(messageLength, 0x00);
return true;
}
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());
}