mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
d6a34edfb2
* add general switchOff * refactoring of leddevices regarding ledcount and switchoff * remove obsolete includes
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
#include "LedDeviceWs2812SPI.h"
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LedDeviceWs2812SPI::LedDeviceWs2812SPI(const Json::Value &deviceConfig)
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: ProviderSpi()
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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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}
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LedDevice* LedDeviceWs2812SPI::construct(const Json::Value &deviceConfig)
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{
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return new LedDeviceWs2812SPI(deviceConfig);
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}
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bool LedDeviceWs2812SPI::setConfig(const Json::Value &deviceConfig)
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{
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ProviderSpi::setConfig(deviceConfig,3000000);
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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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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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// 3 colours, 4 spi bytes per colour + 3 frame end latch bytes
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const int SPI_BYTES_PER_LED = 3 * 4;
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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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{
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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 (unsigned i=0; i<(unsigned)_ledCount; ++i)
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{
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uint32_t colorBits = ((unsigned int)ledValues[i].red << 16)
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| ((unsigned int)ledValues[i].green << 8)
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| ledValues[i].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(spi_size, _ledBuffer.data());
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}
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