46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#include "LedDeviceAPA102.h"
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LedDeviceAPA102::LedDeviceAPA102(const QJsonObject &deviceConfig)
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: ProviderSpi()
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{
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_devConfig = deviceConfig;
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_deviceReady = false;
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}
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LedDevice* LedDeviceAPA102::construct(const QJsonObject &deviceConfig)
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{
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return new LedDeviceAPA102(deviceConfig);
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}
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bool LedDeviceAPA102::init(const QJsonObject &deviceConfig)
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{
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bool isInitOK = ProviderSpi::init(deviceConfig);
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if ( isInitOK )
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{
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const unsigned int startFrameSize = 4;
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const unsigned int endFrameSize = qMax<unsigned int>(((_ledCount + 15) / 16), 4);
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const unsigned int APAbufferSize = (_ledCount * 4) + startFrameSize + endFrameSize;
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_ledBuffer.resize(APAbufferSize, 0xFF);
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_ledBuffer[0] = 0x00;
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_ledBuffer[1] = 0x00;
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_ledBuffer[2] = 0x00;
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_ledBuffer[3] = 0x00;
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}
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return isInitOK;
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}
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int LedDeviceAPA102::write(const std::vector<ColorRgb> &ledValues)
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{
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for (signed iLed=0; iLed < static_cast<int>( _ledCount); ++iLed) {
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const ColorRgb& rgb = ledValues[iLed];
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_ledBuffer[4+iLed*4] = 0xFF;
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_ledBuffer[4+iLed*4+1] = rgb.red;
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_ledBuffer[4+iLed*4+2] = rgb.green;
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_ledBuffer[4+iLed*4+3] = rgb.blue;
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}
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return writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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