spimasterhardware.cpp

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#include <semf/communication/spimasterhardware.h>
#include <semf/utils/core/debug.h>
#include <cstdint>
 
namespace semf
{
SpiMasterHardware::SpiMasterHardware(Gpio& chipSelectPin)
: m_chipSelectPin(&chipSelectPin)
{
}
 
void SpiMasterHardware::write(const uint8_t data[], size_t dataSize)
{
    SEMF_INFO("data %p, dataSize is %u", data, dataSize);
    if (m_isBusy)
    {
        SEMF_ERROR("is busy");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Write_IsBusy)));
        return;
    }
    if (data == nullptr)
    {
        SEMF_ERROR("data is nullptr");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Write_DataIsNullptr)));
        return;
    }
    if (dataSize == 0)
    {
        SEMF_ERROR("size is 0");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Write_DataSizeIsZero)));
        return;
    }
    m_isBusy = true;
 
    if (m_frame == CommunicationHardware::Frame::First || m_frame == CommunicationHardware::Frame::FirstAndLast)
        enableChipSelect();
 
    writeHardware(data, dataSize);
}
 
void SpiMasterHardware::read(uint8_t buffer[], size_t bufferSize)
{
    SEMF_INFO("buffer %p, bufferSize is %u", buffer, bufferSize);
    if (m_isBusy)
    {
        SEMF_ERROR("is busy");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Read_IsBusy)));
        return;
    }
    if (buffer == nullptr && bufferSize != 0)
    {
        SEMF_ERROR("buffer is nullptr");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Read_BufferIsNullptr)));
        return;
    }
    if (bufferSize == 0)
    {
        SEMF_ERROR("bufferSize is 0");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Read_BufferSizeIsZero)));
        return;
    }
 
    m_isBusy = true;
 
    if (m_frame == CommunicationHardware::Frame::First || m_frame == CommunicationHardware::Frame::FirstAndLast)
        enableChipSelect();
 
    readHardware(buffer, bufferSize);
}
 
bool SpiMasterHardware::isBusyReading() const
{
    return m_isBusy;
}
 
bool SpiMasterHardware::isBusyWriting() const
{
    return m_isBusy;
}
 
void SpiMasterHardware::setFrame(CommunicationHardware::Frame frame)
{
    m_frame = frame;
    if (m_frame == CommunicationHardware::Frame::First)
    {
        SEMF_INFO("frame mode: first");
    }
    else if (m_frame == CommunicationHardware::Frame::Next)
    {
        SEMF_INFO("frame mode: next");
    }
    else if (m_frame == CommunicationHardware::Frame::Last)
    {
        SEMF_INFO("frame mode: last");
    }
    else
    {
        SEMF_INFO("frame mode: first and last");
    }
}
 
void SpiMasterHardware::setFormat(uint8_t bits, SpiMasterHardware::TransmissionMode transmission, SpiMasterHardware::WireMode wire)
{
    if (m_isBusy)
    {
        SEMF_ERROR("is busy");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::SetFormat_IsBusy)));
        return;
    }
 
    m_transmission = transmission;
    m_wire = wire;
 
    deinit();
    setFormatHardware(bits, transmission, wire);
    init();
}
 
void SpiMasterHardware::stopWrite()
{
    if (m_wire == WireMode::ReadOnlyWires)
    {
        SEMF_ERROR("is configured as read only");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::StopWrite_IsReadOnly)));
        return;
    }
    if (!isBusyWriting())
    {
        SEMF_WARNING("hardware is not writing");
        return;
    }
 
    stopWriteHardware();
}
 
void SpiMasterHardware::stopRead()
{
    if (m_wire == WireMode::WriteOnlyWires)
    {
        SEMF_ERROR("is configured as write only");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::StopRead_IsWriteOnly)));
        return;
    }
    if (!isBusyReading())
    {
        SEMF_WARNING("hardware is not writing");
        return;
    }
 
    stopReadHardware();
}
 
void SpiMasterHardware::writeRead(const uint8_t writeData[], uint8_t readBuffer[], size_t size)
{
    SEMF_INFO("write data %p, read data %p, size is %u", writeData, readBuffer, size);
    if (m_isBusy)
    {
        SEMF_ERROR("is busy");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::WriteRead_IsBusy)));
        return;
    }
    if (writeData == nullptr)
    {
        SEMF_ERROR("write data is nullptr");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::WriteRead_WriteDataIsNullptr)));
        return;
    }
    if (readBuffer == nullptr)
    {
        SEMF_ERROR("read buffer is nullptr");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::WriteRead_ReadBufferIsNullptr)));
        return;
    }
    if (size == 0)
    {
        SEMF_ERROR("size is 0");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::WriteRead_SizeIsZero)));
        return;
    }
 
    m_isBusy = true;
 
    if (m_frame == CommunicationHardware::Frame::First || m_frame == CommunicationHardware::Frame::FirstAndLast)
        enableChipSelect();
 
    writeReadHardware(writeData, readBuffer, size);
}
 
void SpiMasterHardware::setChipSelectPin(Gpio& chipSelectPin)
{
    SEMF_INFO("set chip select pin");
    if (m_isBusy)
    {
        SEMF_ERROR("set chip select pin, is busy");
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::SetChipSelectPin_IsBusy)));
        return;
    }
    m_chipSelectPin = &chipSelectPin;
}
 
void SpiMasterHardware::enableChipSelect()
{
    if (m_chipSelectPin != nullptr)
    {
        SEMF_INFO("enable chip select pin");
        m_chipSelectPin->reset();
    }
}
 
void SpiMasterHardware::disableChipSelect()
{
    if (m_chipSelectPin != nullptr)
    {
        SEMF_INFO("disable chip select pin");
        m_chipSelectPin->set();
    }
}
 
void SpiMasterHardware::setBusy(bool isBusy)
{
    m_isBusy = isBusy;
}
 
CommunicationHardware::Frame SpiMasterHardware::frame() const
{
    return m_frame;
}
 
void SpiMasterHardware::onDataWritten()
{
    m_isBusy = false;
    SEMF_INFO("data written");
    dataWritten();
}
 
void SpiMasterHardware::onDataAvailable()
{
    m_isBusy = false;
    SEMF_INFO("data available");
    dataAvailable();
}
 
void SpiMasterHardware::onError(Error thrown)
{
    m_isBusy = false;
    SEMF_ERROR("error");
    disableChipSelect();
    error(thrown);
}
 
void SpiMasterHardware::setTransmissionMode(SpiMasterHardware::TransmissionMode mode)
{
    m_transmission = mode;
}
 
void SpiMasterHardware::setWireMode(SpiMasterHardware::WireMode mode)
{
    m_wire = mode;
}
} /* namespace semf */