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bugfix for SPI

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- Set transfer length to 0 for failed transfers
This commit is contained in:
Robin Müller 2023-02-13 13:51:52 +01:00
parent dac2d210b5
commit f0b8457ba2
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GPG Key ID: 11D4952C8CCEF814
1 changed files with 6 additions and 2 deletions
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8
src/fsfw_hal/linux/spi/SpiComIF.cpp
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@ -179,12 +179,11 @@ ReturnValue_t SpiComIF::performRegularSendOperation(SpiCookie* spiCookie, const
uint32_t spiSpeed = 0;
spiCookie->getSpiParameters(spiMode, spiSpeed, nullptr);
setSpiSpeedAndMode(fileDescriptor, spiMode, spiSpeed);
spiCookie->assignWriteBuffer(sendData);
spiCookie->setTransferSize(sendLen);
bool fullDuplex = spiCookie->isFullDuplex();
gpioId_t gpioId = spiCookie->getChipSelectPin();
bool csLockManual = spiCookie->getCsLockManual();
spiCookie->setTransferSize(0);
MutexIF::TimeoutType csType;
dur_millis_t csTimeout = 0;
@ -225,11 +224,15 @@ ReturnValue_t SpiComIF::performRegularSendOperation(SpiCookie* spiCookie, const
updateLinePolarity(fileDescriptor);
}
spiCookie->assignWriteBuffer(sendData);
spiCookie->setTransferSize(sendLen);
/* Execute transfer */
if (fullDuplex) {
/* Initiate a full duplex SPI transfer. */
retval = ioctl(fileDescriptor, SPI_IOC_MESSAGE(1), spiCookie->getTransferStructHandle());
if (retval < 0) {
spiCookie->setTransferSize(0);
utility::handleIoctlError("SpiComIF::sendMessage: ioctl error.");
result = FULL_DUPLEX_TRANSFER_FAILED;
}
@ -239,6 +242,7 @@ ReturnValue_t SpiComIF::performRegularSendOperation(SpiCookie* spiCookie, const
} else {
/* We write with a blocking half-duplex transfer here */
if (write(fileDescriptor, sendData, sendLen) != static_cast<ssize_t>(sendLen)) {
spiCookie->setTransferSize(0);
#if FSFW_VERBOSE_LEVEL >= 1
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::warning << "SpiComIF::sendMessage: Half-Duplex write operation failed!" << std::endl;