eive-obsw/linux/spi/SpiCookie.cpp

#include "SpiCookie.h"

SpiCookie::SpiCookie(address_t spiAddress, gpioId_t chipSelect, std::string spiDev,
        const size_t maxSize, spi::SpiMode spiMode, uint32_t spiSpeed): spiAddress(spiAddress),
        chipSelectPin(chipSelect), spiDevice(spiDev), maxSize(maxSize), spiMode(spiMode),
        spiSpeed(spiSpeed) {
}

SpiCookie::SpiCookie(address_t spiAddress, std::string spiDev, const size_t maxSize,
        spi::SpiMode spiMode, uint32_t spiSpeed):
        SpiCookie(spiAddress, gpio::NO_GPIO, spiDev, maxSize, spiMode, spiSpeed) {
}

void SpiCookie::getSpiParameters(spi::SpiMode& spiMode, uint32_t& spiSpeed,
        UncommonParameters* parameters) const {
    spiMode = this->spiMode;
    spiSpeed = this->spiSpeed;

    if(parameters != nullptr) {
        parameters->threeWireSpi = uncommonParameters.threeWireSpi;
        parameters->lsbFirst = uncommonParameters.lsbFirst;
        parameters->noCs = uncommonParameters.noCs;
        parameters->bitsPerWord = uncommonParameters.bitsPerWord;
        parameters->csHigh = uncommonParameters.csHigh;
    }
}

gpioId_t SpiCookie::getChipSelectPin() const {
    return chipSelectPin;
}

size_t SpiCookie::getMaxBufferSize() const {
    return maxSize;
}

address_t SpiCookie::getSpiAddress() const {
    return spiAddress;
}

std::string SpiCookie::getSpiDevice() const {
    return spiDevice;
}

void SpiCookie::setThreeWireSpi(bool enable) {
    uncommonParameters.threeWireSpi = enable;
}

void SpiCookie::setLsbFirst(bool enable) {
    uncommonParameters.lsbFirst = enable;
}

void SpiCookie::setNoCs(bool enable) {
    uncommonParameters.noCs = enable;
}

void SpiCookie::setBitsPerWord(uint8_t bitsPerWord) {
    uncommonParameters.bitsPerWord = bitsPerWord;
}

void SpiCookie::setCsHigh(bool enable) {
    uncommonParameters.csHigh = enable;
}

void SpiCookie::activateCsDeselect(bool deselectCs, uint16_t delayUsecs) {
    spiTransferStruct.cs_change = deselectCs;
    spiTransferStruct.delay_usecs = delayUsecs;
}

void SpiCookie::assignReadBuffer(uint8_t* rx) {
    if(rx != nullptr) {
        spiTransferStruct.rx_buf = reinterpret_cast<__u64>(rx);
    }
}

void SpiCookie::assignWriteBuffer(const uint8_t* tx) {
    if(tx != nullptr) {
        spiTransferStruct.tx_buf = reinterpret_cast<__u64>(tx);
    }
}

spi_ioc_transfer* SpiCookie::getTransferStructHandle() {
    return &spiTransferStruct;
}

void SpiCookie::setFullOrHalfDuplex(bool halfDuplex) {
    this->halfDuplex = halfDuplex;
}

bool SpiCookie::isFullDuplex() const {
    return not this->halfDuplex;
}

void SpiCookie::assignTransferSize(size_t transferSize) {
    spiTransferStruct.len = transferSize;
}

size_t SpiCookie::getCurrentTransferSize() const {
    return spiTransferStruct.len;
}