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d6a34edfb2
* add general switchOff * refactoring of leddevices regarding ledcount and switchoff * remove obsolete includes
35 lines
1016 B
C++
35 lines
1016 B
C++
#include "LedDeviceLpd6803.h"
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LedDeviceLpd6803::LedDeviceLpd6803(const Json::Value &deviceConfig)
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: ProviderSpi(deviceConfig)
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{
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}
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LedDevice* LedDeviceLpd6803::construct(const Json::Value &deviceConfig)
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{
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return new LedDeviceLpd6803(deviceConfig);
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}
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int LedDeviceLpd6803::write(const std::vector<ColorRgb> &ledValues)
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{
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unsigned messageLength = 4 + 2*_ledCount + _ledCount/8 + 1;
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// Reconfigure if the current connfiguration does not match the required configuration
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if (messageLength != _ledBuffer.size())
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{
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// Initialise the buffer
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_ledBuffer.resize(messageLength, 0x00);
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}
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// Copy the colors from the ColorRgb vector to the Ldp6803 data vector
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for (unsigned iLed=0; iLed<(unsigned)_ledCount; ++iLed)
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{
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const ColorRgb& rgb = ledValues[iLed];
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_ledBuffer[4 + 2 * iLed] = 0x80 | ((rgb.red & 0xf8) >> 1) | (rgb.green >> 6);
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_ledBuffer[5 + 2 * iLed] = ((rgb.green & 0x38) << 2) | (rgb.blue >> 3);
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}
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// Write the data
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return (writeBytes(_ledBuffer.size(), _ledBuffer.data()) < 0) ? -1 : 0;
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}
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