eive-obsw/linux/ipcore/PapbVcInterface.cpp
Robin Mueller 159da20ef2
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some tweaks for busy handling
2023-03-20 14:31:10 +01:00

107 lines
3.2 KiB
C++

#include <fsfw_hal/linux/uio/UioMapper.h>
#include <linux/ipcore/PapbVcInterface.h>
#include "fsfw/serviceinterface/ServiceInterface.h"
PapbVcInterface::PapbVcInterface(LinuxLibgpioIF* gpioComIF, gpioId_t papbBusyId,
gpioId_t papbEmptyId, std::string uioFile, int mapNum)
: gpioComIF(gpioComIF),
papbBusyId(papbBusyId),
papbEmptyId(papbEmptyId),
uioFile(std::move(uioFile)),
mapNum(mapNum) {}
PapbVcInterface::~PapbVcInterface() {}
ReturnValue_t PapbVcInterface::initialize() {
UioMapper uioMapper(uioFile, mapNum);
return uioMapper.getMappedAdress(&vcBaseReg, UioMapper::Permissions::WRITE_ONLY);
}
ReturnValue_t PapbVcInterface::write(const uint8_t* data, size_t size) {
if (pollPapbBusySignal() == returnvalue::OK) {
startPacketTransfer();
}
for (size_t idx = 0; idx < size; idx++) {
if (pollPapbBusySignal() == returnvalue::OK) {
*(vcBaseReg + DATA_REG_OFFSET) = static_cast<uint32_t>(*(data + idx));
} else {
sif::warning << "PapbVcInterface::write: Only written " << idx << " of " << size << " data"
<< std::endl;
return returnvalue::FAILED;
}
}
if (pollPapbBusySignal() == returnvalue::OK) {
endPacketTransfer();
}
return returnvalue::OK;
}
void PapbVcInterface::startPacketTransfer() { *vcBaseReg = CONFIG_START; }
void PapbVcInterface::endPacketTransfer() { *vcBaseReg = CONFIG_END; }
ReturnValue_t PapbVcInterface::pollPapbBusySignal() const {
gpio::Levels papbBusyState = gpio::Levels::LOW;
ReturnValue_t result = returnvalue::OK;
uint32_t busyIdx = 0;
while (true) {
/** Check if PAPB interface is ready to receive data */
result = gpioComIF->readGpio(papbBusyId, papbBusyState);
if (result != returnvalue::OK) {
sif::warning << "PapbVcInterface::pollPapbBusySignal: Failed to read papb busy signal"
<< std::endl;
return returnvalue::FAILED;
}
if (papbBusyState == gpio::Levels::HIGH) {
return returnvalue::OK;
}
if (busyIdx == 100) {
return PAPB_BUSY;
}
busyIdx++;
}
return returnvalue::OK;
}
void PapbVcInterface::isVcInterfaceBufferEmpty() {
ReturnValue_t result = returnvalue::OK;
gpio::Levels papbEmptyState = gpio::Levels::HIGH;
result = gpioComIF->readGpio(papbEmptyId, papbEmptyState);
if (result != returnvalue::OK) {
sif::warning << "PapbVcInterface::isVcInterfaceBufferEmpty: Failed to read papb empty signal"
<< std::endl;
return;
}
if (papbEmptyState == gpio::Levels::HIGH) {
sif::debug << "PapbVcInterface::isVcInterfaceBufferEmpty: Buffer is empty" << std::endl;
} else {
sif::debug << "PapbVcInterface::isVcInterfaceBufferEmpty: Buffer is not empty" << std::endl;
}
return;
}
bool PapbVcInterface::isBusy() const { return pollPapbBusySignal() == PAPB_BUSY; }
ReturnValue_t PapbVcInterface::sendTestFrame() {
/** Size of one complete transfer frame data field amounts to 1105 bytes */
uint8_t testPacket[1105];
/** Fill one test packet */
for (int idx = 0; idx < 1105; idx++) {
testPacket[idx] = static_cast<uint8_t>(idx & 0xFF);
}
ReturnValue_t result = write(testPacket, 1105);
if (result != returnvalue::OK) {
return result;
}
return returnvalue::OK;
}