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untested support for the P9813 chip

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Former-commit-id: df7341af27503fffd5be9b0afd9525e52dccbebb
This commit is contained in:
tostadora 2014-01-16 20:34:56 +01:00
parent b31ad73beb
commit fd0a69fb77
2 changed files with 26 additions and 3 deletions
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28
libsrc/leddevice/LedDeviceP9813.cpp
View File

@ -22,13 +22,35 @@ int LedDeviceP9813::write(const std::vector<ColorRgb> &ledValues)
{
mLedCount = ledValues.size();
const unsigned dataLen = ledValues.size() * sizeof(ColorRgb);
const uint8_t * dataPtr = reinterpret_cast<const uint8_t *>(ledValues.data());
const unsigned dataLen = ledValues.size() * 4 + 8;
uint8_t data[dataLen];
return writeBytes(dataLen, dataPtr);
memset(data, 0x00, dataLen);
int j = 4;
for (unsigned i = 0; i < mLedCount; i++){
data[j++] = calculateChecksum(ledValues[i]);
data[j++] = ledValues[i].blue;
data[j++] = ledValues[i].green;
data[j++] = ledValues[i].red;
}
return writeBytes(dataLen, data);
}
int LedDeviceP9813::switchOff()
{
return write(std::vector<ColorRgb>(mLedCount, ColorRgb{0,0,0}));
}
const uint8_t LedDeviceP9813::calculateChecksum(const ColorRgb color)
{
uint8_t res = 0;
res |= (uint8_t)0x03 << 6;
res |= (uint8_t)(~(color.blue >> 6) & 0x03) << 4;
res |= (uint8_t)(~(color.green >> 6) & 0x03) << 2;
res |= (uint8_t)(~(color.red >> 6) & 0x03);
return res;
}

1
libsrc/leddevice/LedDeviceP9813.h
View File

@ -36,4 +36,5 @@ private:
/// the number of leds
size_t mLedCount;
const uint8_t calculateChecksum(const ColorRgb color);
};