mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2025-03-01 10:33:28 +00:00
49d3d35de1
* Changed default baud rate in schema for ws2812spi and sk6812spi * now sets the default baud_rate speed to 2800000 if omitted. Previously it used the ProviderSPI default which was 1000000 and guaranteed not to work * Added warnings if the SPI baud rate is likely out of range Added some debug statements to ProviderSpi
89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
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// STL includes
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#include <cstring>
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#include <cstdio>
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#include <iostream>
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// Linux includes
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#include <fcntl.h>
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#include <sys/ioctl.h>
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// hyperion local includes
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#include "LedDeviceSk6812SPI.h"
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LedDeviceSk6812SPI::LedDeviceSk6812SPI(const Json::Value &deviceConfig)
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: ProviderSpi(deviceConfig)
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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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setConfig(deviceConfig);
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Debug( _log, "whiteAlgorithm : %s", _whiteAlgorithm.c_str());
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}
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LedDevice* LedDeviceSk6812SPI::construct(const Json::Value &deviceConfig)
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{
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return new LedDeviceSk6812SPI(deviceConfig);
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}
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bool LedDeviceSk6812SPI::setConfig(const Json::Value &deviceConfig)
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{
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ProviderSpi::setConfig(deviceConfig);
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_baudRate_Hz = deviceConfig.get("rate",3000000).asInt();
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if ( (_baudRate_Hz < 2050000) || (_baudRate_Hz > 4000000) )
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{
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Warning(_log, "SPI rate %d outside recommended range (2050000 -> 4000000)", _baudRate_Hz);
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}
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_whiteAlgorithm = deviceConfig.get("white_algorithm","").asString();
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return true;
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}
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int LedDeviceSk6812SPI::write(const std::vector<ColorRgb> &ledValues)
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{
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_ledCount = ledValues.size();
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// 4 colours, 4 spi bytes per colour + 3 frame end latch bytes
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#define COLOURS_PER_LED 4
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#define SPI_BYTES_PER_COLOUR 4
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#define SPI_BYTES_PER_LED COLOURS_PER_LED * SPI_BYTES_PER_COLOUR
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unsigned spi_size = _ledCount * SPI_BYTES_PER_LED + 3;
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if(_ledBuffer.size() != spi_size){
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_ledBuffer.resize(spi_size, 0x00);
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}
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unsigned spi_ptr = 0;
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for (const ColorRgb& color : ledValues) {
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Rgb_to_Rgbw(color, &_temp_rgbw, _whiteAlgorithm);
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uint32_t colorBits =
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((uint32_t)_temp_rgbw.red << 24) +
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((uint32_t)_temp_rgbw.green << 16) +
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((uint32_t)_temp_rgbw.blue << 8) +
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_temp_rgbw.white;
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for (int j=SPI_BYTES_PER_LED - 1; j>=0; j--) {
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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(spi_size, _ledBuffer.data());
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}
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int LedDeviceSk6812SPI::switchOff()
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{
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return write(std::vector<ColorRgb>(_ledCount, ColorRgb{0,0,0}));
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}
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