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https://github.com/hyperion-project/hyperion.ng.git
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1670ec58a7
* sk6812SPI was buggy cleaned up code - make sk6812spi and ws2812spi more consistent * led device schema updates
61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
#include "LedDeviceWs2812SPI.h"
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LedDeviceWs2812SPI::LedDeviceWs2812SPI(const QJsonObject &deviceConfig)
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: ProviderSpi()
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, SPI_BYTES_PER_COLOUR(4)
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, bitpair_to_byte {
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0b10001000,
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0b10001100,
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0b11001000,
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0b11001100,
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}
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{
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_deviceReady = init(deviceConfig);
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}
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LedDevice* LedDeviceWs2812SPI::construct(const QJsonObject &deviceConfig)
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{
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return new LedDeviceWs2812SPI(deviceConfig);
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}
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bool LedDeviceWs2812SPI::init(const QJsonObject &deviceConfig)
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{
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_baudRate_Hz = 3000000;
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if ( !ProviderSpi::init(deviceConfig) )
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{
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return false;
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}
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WarningIf(( _baudRate_Hz < 2050000 || _baudRate_Hz > 4000000 ), _log, "SPI rate %d outside recommended range (2050000 -> 4000000)", _baudRate_Hz);
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const int SPI_FRAME_END_LATCH_BYTES = 3;
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_ledBuffer.resize(_ledRGBCount * SPI_BYTES_PER_COLOUR + SPI_FRAME_END_LATCH_BYTES, 0x00);
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return true;
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}
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int LedDeviceWs2812SPI::write(const std::vector<ColorRgb> &ledValues)
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{
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unsigned spi_ptr = 0;
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const int SPI_BYTES_PER_LED = sizeof(ColorRgb) * SPI_BYTES_PER_COLOUR;
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for (const ColorRgb& color : ledValues)
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{
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uint32_t colorBits = ((unsigned int)color.red << 16)
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| ((unsigned int)color.green << 8)
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| color.blue;
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for (int j=SPI_BYTES_PER_LED - 1; j>=0; j--)
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{
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_ledBuffer[spi_ptr+j] = bitpair_to_byte[ colorBits & 0x3 ];
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colorBits >>= 2;
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}
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spi_ptr += SPI_BYTES_PER_LED;
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}
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_ledBuffer[spi_ptr++] = 0;
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_ledBuffer[spi_ptr++] = 0;
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_ledBuffer[spi_ptr++] = 0;
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return writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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