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https://github.com/hyperion-project/hyperion.ng.git
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57 lines
1.3 KiB
C++
57 lines
1.3 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 "LedDeviceP9813.h"
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LedDeviceP9813::LedDeviceP9813(const std::string& outputDevice, const unsigned baudrate) :
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LedSpiDevice(outputDevice, baudrate, 0),
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mLedCount(0)
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{
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// empty
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}
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int LedDeviceP9813::write(const std::vector<ColorRgb> &ledValues)
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{
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mLedCount = ledValues.size();
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const unsigned dataLen = ledValues.size() * 4 + 8;
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uint8_t data[dataLen];
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memset(data, 0x00, dataLen);
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int j = 4;
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for (unsigned i = 0; i < mLedCount; i++){
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data[j++] = calculateChecksum(ledValues[i]);
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data[j++] = ledValues[i].blue;
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data[j++] = ledValues[i].green;
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data[j++] = ledValues[i].red;
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}
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return writeBytes(dataLen, data);
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}
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int LedDeviceP9813::switchOff()
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{
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return write(std::vector<ColorRgb>(mLedCount, ColorRgb{0,0,0}));
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}
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const uint8_t LedDeviceP9813::calculateChecksum(const ColorRgb color)
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{
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uint8_t res = 0;
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res |= (uint8_t)0x03 << 6;
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res |= (uint8_t)(~(color.blue >> 6) & 0x03) << 4;
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res |= (uint8_t)(~(color.green >> 6) & 0x03) << 2;
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res |= (uint8_t)(~(color.red >> 6) & 0x03);
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return res;
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}
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