ethercatdata.cpp

#include "ethercatdata.h"

EthercatData::EthercatData(QObject* parent)
    : QObject { parent }
{
}

// slot: output changed
void EthercatData::onOutputChanged(int slave, int idx, bool checked)
{
    auto& io = m_mapData[slave];

    // calculate byte and bit offset
    const int     byteBits   = 8;
    const int     byteOffset = idx / byteBits;
    const int     bitOffset  = idx % byteBits;
    const uint8_t mask       = static_cast<uint8_t>(1u << bitOffset);

    uint8_t& byteRef = io.output[byteOffset];
    // set or clear bit
    const uint8_t newByte = checked
                                ? static_cast<uint8_t>(byteRef | mask)
                                : static_cast<uint8_t>(byteRef & ~mask);

    // emit signal if changed
    if (byteRef != newByte) {
        byteRef = newByte;
        emit outputChanged(slave, byteOffset, byteRef);
    }
}

// slot: input changed
void EthercatData::onInputChanged(int slave, int byteOffset, uint8_t value)
{
    auto& io = m_mapData[slave];

	// emit signal if changed
    if (io.input[byteOffset] != value) {
        io.input[byteOffset] = value;

        emit inputChanged(slave, byteOffset, value);
    }
}