466 lines
15 KiB
C++
466 lines
15 KiB
C++
#include "Max31865RtdLowlevelHandler.h"
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#include <fsfw/tasks/TaskFactory.h>
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#include <fsfw/timemanager/Stopwatch.h>
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#include <fsfw_hal/linux/spi/ManualCsLockGuard.h>
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#define OBSW_RTD_AUTO_MODE 1
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#if OBSW_RTD_AUTO_MODE == 1
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static constexpr uint8_t BASE_CFG = (MAX31865::Bias::ON << MAX31865::CfgBitPos::BIAS_SEL) |
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(MAX31865::Wires::FOUR_WIRE << MAX31865::CfgBitPos::WIRE_SEL) |
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(MAX31865::ConvMode::AUTO << MAX31865::CfgBitPos::CONV_MODE);
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#else
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static constexpr uint8_t BASE_CFG =
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(MAX31865::Bias::OFF << MAX31865::CfgBitPos::BIAS_SEL) |
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(MAX31865::Wires::FOUR_WIRE << MAX31865::CfgBitPos::WIRE_SEL) |
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(MAX31865::ConvMode::NORM_OFF << MAX31865::CfgBitPos::CONV_MODE);
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#endif
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Max31865RtdReader::Max31865RtdReader(object_id_t objectId, SpiComIF* lowLevelComIF, GpioIF* gpioIF)
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: SystemObject(objectId), rtds(EiveMax31855::NUM_RTDS), comIF(lowLevelComIF), gpioIF(gpioIF) {
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readerMutex = MutexFactory::instance()->createMutex();
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}
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ReturnValue_t Max31865RtdReader::performOperation(uint8_t operationCode) {
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using namespace MAX31865;
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ReturnValue_t result = returnvalue::OK;
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static_cast<void>(result);
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// Stopwatch watch;
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if (periodicInitHandling()) {
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#if OBSW_RTD_AUTO_MODE == 0
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// 10 ms delay for VBIAS startup
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TaskFactory::delayTask(10);
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#endif
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} else {
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// No devices usable (e.g. TCS board off)
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return returnvalue::OK;
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}
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#if OBSW_RTD_AUTO_MODE == 0
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result = periodicReadReqHandling();
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if (result != returnvalue::OK) {
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return result;
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}
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// After requesting, 65 milliseconds delay required
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TaskFactory::delayTask(65);
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#endif
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return periodicReadHandling();
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}
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bool Max31865RtdReader::rtdIsActive(uint8_t idx) {
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if (rtds[idx]->on and rtds[idx]->active and rtds[idx]->configured) {
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return true;
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}
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return false;
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}
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bool Max31865RtdReader::periodicInitHandling() {
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using namespace MAX31865;
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MutexGuard mg(readerMutex);
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ReturnValue_t result = returnvalue::OK;
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if (mg.getLockResult() != returnvalue::OK) {
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sif::warning << "Max31865RtdReader::periodicInitHandling: Mutex lock failed" << std::endl;
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return false;
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}
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for (auto& rtd : rtds) {
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if (rtd == nullptr) {
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continue;
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}
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if ((rtd->on or rtd->active) and not rtd->configured and rtd->cd.hasTimedOut()) {
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ManualCsLockWrapper mg(csLock, gpioIF, rtd->spiCookie, csTimeoutType, csTimeoutMs);
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if (mg.lockResult != returnvalue::OK or mg.gpioResult != returnvalue::OK) {
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sif::error << "Max31865RtdReader::periodicInitHandling: Manual CS lock failed" << std::endl;
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break;
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}
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result = writeCfgReg(rtd->spiCookie, BASE_CFG);
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "writeCfgReg");
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}
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if (rtd->writeLowThreshold) {
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result = writeLowThreshold(rtd->spiCookie, rtd->lowThreshold);
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "writeLowThreshold");
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}
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}
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if (rtd->writeHighThreshold) {
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result = writeHighThreshold(rtd->spiCookie, rtd->highThreshold);
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "writeHighThreshold");
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}
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}
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result = clearFaultStatus(rtd->spiCookie);
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "clearFaultStatus");
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}
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rtd->configured = true;
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rtd->db.configured = true;
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if (rtd->active) {
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rtd->db.active = true;
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}
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}
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if (rtd->active and rtd->configured and not rtd->db.active) {
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rtd->db.active = true;
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}
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}
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bool someRtdUsable = false;
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for (auto& rtd : rtds) {
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if (rtd == nullptr) {
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continue;
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}
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if (rtdIsActive(rtd->idx)) {
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#if OBSW_RTD_AUTO_MODE == 0
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result = writeBiasSel(Bias::ON, rtd->spiCookie, BASE_CFG);
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#endif
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someRtdUsable = true;
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}
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}
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return someRtdUsable;
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}
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ReturnValue_t Max31865RtdReader::periodicReadReqHandling() {
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using namespace MAX31865;
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MutexGuard mg(readerMutex);
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if (mg.getLockResult() != returnvalue::OK) {
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sif::warning << "Max31865RtdReader::periodicReadReqHandling: Mutex lock failed" << std::endl;
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return returnvalue::FAILED;
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}
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// Now request one shot config for all active RTDs
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for (auto& rtd : rtds) {
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if (rtd == nullptr) {
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continue;
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}
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if (rtdIsActive(rtd->idx)) {
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ReturnValue_t result = writeCfgReg(rtd->spiCookie, BASE_CFG | (1 << CfgBitPos::ONE_SHOT));
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "writeCfgReg");
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// Release mutex ASAP
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return returnvalue::FAILED;
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}
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}
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}
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::periodicReadHandling() {
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using namespace MAX31865;
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auto result = returnvalue::OK;
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MutexGuard mg(readerMutex);
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if (mg.getLockResult() != returnvalue::OK) {
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sif::warning << "Max31865RtdReader::periodicReadReqHandling: Mutex lock failed" << std::endl;
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return returnvalue::FAILED;
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}
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// Now read the RTD values
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for (auto& rtd : rtds) {
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if (rtd == nullptr) {
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continue;
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}
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if (rtdIsActive(rtd->idx)) {
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uint16_t rtdVal = 0;
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bool faultBitSet = false;
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result = readRtdVal(rtd->spiCookie, rtdVal, faultBitSet);
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if (result != returnvalue::OK) {
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handleSpiError(rtd, result, "readRtdVal");
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return returnvalue::FAILED;
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}
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if (faultBitSet) {
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rtd->db.faultBitSet = faultBitSet;
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}
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rtd->db.adcCode = rtdVal;
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}
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}
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#if OBSW_RTD_AUTO_MODE == 0
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for (auto& rtd : rtds) {
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if (rtd == nullptr) {
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continue;
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}
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// Even if a device was made inactive, turn off the bias here. If it was turned off, not
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// necessary anymore..
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if (rtd->on) {
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result = writeBiasSel(Bias::OFF, rtd->spiCookie, BASE_CFG);
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}
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}
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#endif
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::initializeInterface(CookieIF* cookie) {
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if (cookie == nullptr) {
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throw std::invalid_argument("Invalid MAX31865 Reader Cookie");
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}
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auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
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ReturnValue_t result = comIF->initializeInterface(rtdCookie->spiCookie);
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if (result != returnvalue::OK) {
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return result;
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}
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if (rtdCookie->idx > EiveMax31855::NUM_RTDS) {
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throw std::invalid_argument("Invalid RTD index");
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}
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rtds[rtdCookie->idx] = rtdCookie;
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MutexGuard mg(readerMutex);
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if (dbLen == 0) {
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dbLen = rtdCookie->db.getSerializedSize();
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}
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::sendMessage(CookieIF* cookie, const uint8_t* sendData,
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size_t sendLen) {
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if (cookie == nullptr) {
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return returnvalue::FAILED;
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}
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// Empty command.. don't fail for now
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if (sendLen < 1) {
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return returnvalue::OK;
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}
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MutexGuard mg(readerMutex);
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if (mg.getLockResult() != returnvalue::OK) {
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sif::warning << "Max31865RtdReader::sendMessage: Mutex lock failed" << std::endl;
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return returnvalue::FAILED;
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}
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auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
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uint8_t cmdRaw = sendData[0];
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if (cmdRaw > EiveMax31855::RtdCommands::NUM_CMDS) {
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sif::warning << "Max31865RtdReader::sendMessage: Invalid command" << std::endl;
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return returnvalue::FAILED;
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}
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auto thresholdHandler = [](Max31865ReaderCookie* rtdCookie, const uint8_t* sendData) {
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rtdCookie->lowThreshold = (sendData[1] << 8) | sendData[2];
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rtdCookie->highThreshold = (sendData[3] << 8) | sendData[4];
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rtdCookie->writeLowThreshold = true;
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rtdCookie->writeHighThreshold = true;
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};
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auto cmd = static_cast<EiveMax31855::RtdCommands>(sendData[0]);
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switch (cmd) {
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case (EiveMax31855::RtdCommands::ON): {
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if (not rtdCookie->on) {
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rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
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rtdCookie->cd.resetTimer();
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rtdCookie->on = true;
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rtdCookie->active = false;
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rtdCookie->configured = false;
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if (sendLen == 5) {
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thresholdHandler(rtdCookie, sendData);
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}
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}
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break;
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}
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case (EiveMax31855::RtdCommands::ACTIVE): {
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if (not rtdCookie->on) {
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rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
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rtdCookie->cd.resetTimer();
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rtdCookie->on = true;
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rtdCookie->active = true;
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rtdCookie->configured = false;
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} else {
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rtdCookie->active = true;
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}
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if (sendLen == 5) {
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thresholdHandler(rtdCookie, sendData);
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}
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break;
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}
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case (EiveMax31855::RtdCommands::OFF): {
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rtdCookie->on = false;
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rtdCookie->active = false;
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rtdCookie->configured = false;
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break;
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}
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case (EiveMax31855::RtdCommands::HIGH_TRESHOLD): {
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if (sendLen == 3) {
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rtdCookie->highThreshold = (sendData[1] << 8) | sendData[2];
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rtdCookie->writeHighThreshold = true;
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} else {
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return returnvalue::FAILED;
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}
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break;
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}
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case (EiveMax31855::RtdCommands::LOW_THRESHOLD): {
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if (sendLen == 3) {
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rtdCookie->lowThreshold = (sendData[1] << 8) | sendData[2];
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rtdCookie->writeLowThreshold = true;
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} else {
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return returnvalue::FAILED;
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}
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break;
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}
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case (EiveMax31855::RtdCommands::CFG):
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default: {
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// TODO: Only implement if needed
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break;
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}
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}
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::getSendSuccess(CookieIF* cookie) { return returnvalue::OK; }
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ReturnValue_t Max31865RtdReader::requestReceiveMessage(CookieIF* cookie, size_t requestLen) {
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::readReceivedMessage(CookieIF* cookie, uint8_t** buffer,
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size_t* size) {
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MutexGuard mg(readerMutex);
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if (mg.getLockResult() != returnvalue::OK) {
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// TODO: Emit warning
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return returnvalue::FAILED;
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}
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auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
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uint8_t* exchangePtr = rtdCookie->exchangeBuf.data();
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size_t serLen = 0;
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auto result = rtdCookie->db.serialize(&exchangePtr, &serLen, rtdCookie->exchangeBuf.size(),
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SerializeIF::Endianness::MACHINE);
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if (result != returnvalue::OK) {
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// TODO: Emit warning
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return returnvalue::FAILED;
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}
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*buffer = reinterpret_cast<uint8_t*>(rtdCookie->exchangeBuf.data());
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*size = serLen;
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::writeCfgReg(SpiCookie* cookie, uint8_t cfg) {
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using namespace MAX31865;
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return writeNToReg(cookie, CONFIG, 1, &cfg, nullptr);
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}
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ReturnValue_t Max31865RtdReader::writeBiasSel(MAX31865::Bias bias, SpiCookie* cookie,
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uint8_t baseCfg) {
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using namespace MAX31865;
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if (bias == MAX31865::Bias::OFF) {
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baseCfg &= ~(1 << CfgBitPos::BIAS_SEL);
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} else {
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baseCfg |= (1 << CfgBitPos::BIAS_SEL);
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}
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return writeCfgReg(cookie, baseCfg);
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}
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ReturnValue_t Max31865RtdReader::clearFaultStatus(SpiCookie* cookie) {
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using namespace MAX31865;
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// Read back the current configuration to avoid overwriting it when clearing te fault status
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uint8_t currentCfg = 0;
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auto result = readCfgReg(cookie, currentCfg);
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if (result != returnvalue::OK) {
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return result;
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}
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// Clear bytes 5, 3 and 2 which need to be 0
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currentCfg &= ~0x2C;
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currentCfg |= (1 << CfgBitPos::FAULT_STATUS_CLEAR);
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return writeCfgReg(cookie, currentCfg);
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}
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ReturnValue_t Max31865RtdReader::readCfgReg(SpiCookie* cookie, uint8_t& cfg) {
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using namespace MAX31865;
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uint8_t* replyPtr = nullptr;
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auto result = readNFromReg(cookie, CONFIG, 1, &replyPtr);
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if (result == returnvalue::OK) {
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cfg = replyPtr[0];
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}
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return result;
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}
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ReturnValue_t Max31865RtdReader::writeLowThreshold(SpiCookie* cookie, uint16_t val) {
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using namespace MAX31865;
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uint8_t cmd[2] = {static_cast<uint8_t>((val >> 8) & 0xff), static_cast<uint8_t>(val & 0xff)};
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return writeNToReg(cookie, LOW_THRESHOLD, 2, cmd, nullptr);
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}
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ReturnValue_t Max31865RtdReader::writeHighThreshold(SpiCookie* cookie, uint16_t val) {
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using namespace MAX31865;
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uint8_t cmd[2] = {static_cast<uint8_t>((val >> 8) & 0xff), static_cast<uint8_t>(val & 0xff)};
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return writeNToReg(cookie, HIGH_THRESHOLD, 2, cmd, nullptr);
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}
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ReturnValue_t Max31865RtdReader::readLowThreshold(SpiCookie* cookie, uint16_t& lowThreshold) {
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using namespace MAX31865;
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uint8_t* replyPtr = nullptr;
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auto result = readNFromReg(cookie, LOW_THRESHOLD, 2, &replyPtr);
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if (result == returnvalue::OK) {
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lowThreshold = (replyPtr[0] << 8) | replyPtr[1];
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}
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return result;
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}
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ReturnValue_t Max31865RtdReader::readHighThreshold(SpiCookie* cookie, uint16_t& highThreshold) {
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using namespace MAX31865;
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uint8_t* replyPtr = nullptr;
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auto result = readNFromReg(cookie, HIGH_THRESHOLD, 2, &replyPtr);
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if (result == returnvalue::OK) {
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highThreshold = (replyPtr[0] << 8) | replyPtr[1];
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}
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return result;
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}
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ReturnValue_t Max31865RtdReader::writeNToReg(SpiCookie* cookie, uint8_t reg, size_t n, uint8_t* cmd,
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uint8_t** reply) {
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using namespace MAX31865;
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if (n > cmdBuf.size() - 1) {
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return returnvalue::FAILED;
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}
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cmdBuf[0] = reg | WRITE_BIT;
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for (size_t idx = 0; idx < n; idx++) {
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cmdBuf[idx + 1] = cmd[idx];
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}
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return comIF->sendMessage(cookie, cmdBuf.data(), n + 1);
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}
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ReturnValue_t Max31865RtdReader::readRtdVal(SpiCookie* cookie, uint16_t& val, bool& faultBitSet) {
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using namespace MAX31865;
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uint8_t* replyPtr = nullptr;
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auto result = readNFromReg(cookie, RTD, 2, &replyPtr);
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if (result != returnvalue::OK) {
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return result;
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}
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if (replyPtr[1] & 0b0000'0001) {
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faultBitSet = true;
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}
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// Shift 1 to the right to remove fault bit
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val = ((replyPtr[0] << 8) | replyPtr[1]) >> 1;
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return result;
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}
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ReturnValue_t Max31865RtdReader::readNFromReg(SpiCookie* cookie, uint8_t reg, size_t n,
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uint8_t** reply) {
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using namespace MAX31865;
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if (n > 4) {
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return returnvalue::FAILED;
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}
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// Clear write bit in any case
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reg &= ~WRITE_BIT;
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cmdBuf[0] = reg;
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std::memset(cmdBuf.data() + 1, 0, n);
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ReturnValue_t result = comIF->sendMessage(cookie, cmdBuf.data(), n + 1);
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if (result != returnvalue::OK) {
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return returnvalue::FAILED;
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}
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size_t dummyLen = 0;
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uint8_t* replyPtr = nullptr;
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result = comIF->readReceivedMessage(cookie, &replyPtr, &dummyLen);
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if (result != returnvalue::OK) {
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return result;
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}
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if (reply != nullptr) {
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*reply = replyPtr + 1;
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}
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return returnvalue::OK;
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}
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ReturnValue_t Max31865RtdReader::handleSpiError(Max31865ReaderCookie* cookie, ReturnValue_t result,
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const char* ctx) {
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cookie->db.spiErrorCount.value += 1;
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sif::warning << "Max31865RtdReader::handleSpiError: " << ctx << " | Failed with result " << result
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<< std::endl;
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return result;
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}
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ReturnValue_t Max31865RtdReader::initialize() {
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csLock = comIF->getCsMutex();
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return SystemObject::initialize();
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}
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