hyperion.ng/libsrc/leddevice/LedDeviceSk6812SPI.cpp
redPanther 5aac2be702 Leddevice refactoring the next next part (#263)
* switch rs232 provider to completly async transfer

* start of implementing a seperate init function for leddevices

* rename setconfig to init

* more fixes

* implement missing code

* fix code style

* remove debug  code

* remove  debug stuff

* set loglevel to original state
2016-10-08 08:14:36 +02:00

73 lines
1.8 KiB
C++

#include "LedDeviceSk6812SPI.h"
LedDeviceSk6812SPI::LedDeviceSk6812SPI(const Json::Value &deviceConfig)
: ProviderSpi()
, _whiteAlgorithm(RGBW::INVALID)
, bitpair_to_byte {
0b10001000,
0b10001100,
0b11001000,
0b11001100,
}
{
_deviceReady = init(deviceConfig);
}
LedDevice* LedDeviceSk6812SPI::construct(const Json::Value &deviceConfig)
{
return new LedDeviceSk6812SPI(deviceConfig);
}
bool LedDeviceSk6812SPI::init(const Json::Value &deviceConfig)
{
std::string whiteAlgorithm = deviceConfig.get("white_algorithm","white_off").asString();
_whiteAlgorithm = RGBW::stringToWhiteAlgorithm(whiteAlgorithm);
if (_whiteAlgorithm == RGBW::INVALID)
{
Error(_log, "unknown whiteAlgorithm %s", whiteAlgorithm.c_str());
return false;
}
Debug( _log, "whiteAlgorithm : %s", whiteAlgorithm.c_str());
_baudRate_Hz = 3000000;
if ( !ProviderSpi::init(deviceConfig) )
{
return false;
}
const int SPI_BYTES_PER_COLOUR = 4;
const int SPI_FRAME_END_LATCH_BYTES = 3;
_ledBuffer.resize(_ledRGBWCount * SPI_BYTES_PER_COLOUR + SPI_FRAME_END_LATCH_BYTES, 0x00);
return true;
}
int LedDeviceSk6812SPI::write(const std::vector<ColorRgb> &ledValues)
{
unsigned spi_ptr = 0;
static const int SPI_BYTES_PER_LED = 4;
for (const ColorRgb& color : ledValues)
{
RGBW::Rgb_to_Rgbw(color, &_temp_rgbw, _whiteAlgorithm);
uint32_t colorBits =
((uint32_t)_temp_rgbw.red << 24) +
((uint32_t)_temp_rgbw.green << 16) +
((uint32_t)_temp_rgbw.blue << 8) +
_temp_rgbw.white;
for (int j=SPI_BYTES_PER_LED - 1; j>=0; j--) {
_ledBuffer[spi_ptr+j] = bitpair_to_byte[ colorBits & 0x3 ];
colorBits >>= 2;
}
spi_ptr += SPI_BYTES_PER_LED;
}
_ledBuffer[spi_ptr++] = 0;
_ledBuffer[spi_ptr++] = 0;
_ledBuffer[spi_ptr++] = 0;
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}