hyperion.ng/libsrc/leddevice/LedDeviceTpm2.cpp

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#include "LedDeviceTpm2.h"
LedDeviceTpm2::LedDeviceTpm2(const Json::Value &deviceConfig)
: ProviderRs232()
{
_deviceReady = init(deviceConfig);
}
LedDevice* LedDeviceTpm2::construct(const Json::Value &deviceConfig)
{
return new LedDeviceTpm2(deviceConfig);
}
bool LedDeviceTpm2::init(const Json::Value &deviceConfig)
{
ProviderRs232::init(deviceConfig);
_ledBuffer.resize(5 + 3*_ledCount);
_ledBuffer[0] = 0xC9; // block-start byte
_ledBuffer[1] = 0xDA; // DATA frame
_ledBuffer[2] = ((3 * _ledCount) >> 8) & 0xFF; // frame size high byte
_ledBuffer[3] = (3 * _ledCount) & 0xFF; // frame size low byte
_ledBuffer.back() = 0x36; // block-end byte
return true;
}
int LedDeviceTpm2::write(const std::vector<ColorRgb> &ledValues)
{
memcpy(4 + _ledBuffer.data(), ledValues.data(), _ledRGBCount);
return writeBytes(_ledBuffer.size(), _ledBuffer.data());
}