clean up op done

linux/tcs/CMakeLists.txt

@@ -0,0 +1 @@
+target_sources(${OBSW_NAME} PUBLIC Max31865RtdPolling.cpp)

linux/tcs/Max31865RtdPolling.cpp

@@ -0,0 +1,473 @@
+#include <fsfw/tasks/TaskFactory.h>
+#include <fsfw/timemanager/Stopwatch.h>
+#include <fsfw_hal/linux/spi/ManualCsLockGuard.h>
+#include <linux/tcs/Max31865RtdPolling.h>
+
+#define OBSW_RTD_AUTO_MODE 1
+
+#if OBSW_RTD_AUTO_MODE == 1
+static constexpr uint8_t BASE_CFG = (MAX31865::Bias::ON << MAX31865::CfgBitPos::BIAS_SEL) |
+                                    (MAX31865::Wires::FOUR_WIRE << MAX31865::CfgBitPos::WIRE_SEL) |
+                                    (MAX31865::ConvMode::AUTO << MAX31865::CfgBitPos::CONV_MODE);
+#else
+static constexpr uint8_t BASE_CFG =
+    (MAX31865::Bias::OFF << MAX31865::CfgBitPos::BIAS_SEL) |
+    (MAX31865::Wires::FOUR_WIRE << MAX31865::CfgBitPos::WIRE_SEL) |
+    (MAX31865::ConvMode::NORM_OFF << MAX31865::CfgBitPos::CONV_MODE);
+#endif
+
+Max31865RtdPolling::Max31865RtdPolling(object_id_t objectId, SpiComIF* lowLevelComIF,
+                                       GpioIF* gpioIF)
+    : SystemObject(objectId), rtds(EiveMax31855::NUM_RTDS), comIF(lowLevelComIF), gpioIF(gpioIF) {
+  readerLock = MutexFactory::instance()->createMutex();
+}
+
+ReturnValue_t Max31865RtdPolling::performOperation(uint8_t operationCode) {
+  using namespace MAX31865;
+  ReturnValue_t result = returnvalue::OK;
+  static_cast<void>(result);
+  // Measured to take 0-1 ms in debug build
+  // Stopwatch watch;
+  periodicInitHandling();
+#if OBSW_RTD_AUTO_MODE == 0
+  // 10 ms delay for VBIAS startup
+  TaskFactory::delayTask(10);
+  result = periodicReadReqHandling();
+  if (result != returnvalue::OK) {
+    return result;
+  }
+  // After requesting, 65 milliseconds delay required
+  TaskFactory::delayTask(65);
+#endif
+
+  return periodicReadHandling();
+}
+
+bool Max31865RtdPolling::rtdIsActive(uint8_t idx) {
+  if (rtds[idx]->on and rtds[idx]->db.active and rtds[idx]->db.configured) {
+    return true;
+  }
+  return false;
+}
+
+ReturnValue_t Max31865RtdPolling::periodicInitHandling() {
+  using namespace MAX31865;
+  ReturnValue_t result = returnvalue::OK;
+  for (auto& rtd : rtds) {
+    if (rtd == nullptr) {
+      continue;
+    }
+    bool mustPerformInitHandling = false;
+    bool doWriteLowThreshold = false;
+    bool doWriteHighThreshold = false;
+    {
+      MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+      if (mg.getLockResult() != returnvalue::OK) {
+        sif::warning << "Max31865RtdReader::periodicInitHandling: Mutex lock failed" << std::endl;
+        continue;
+      }
+      mustPerformInitHandling =
+          (rtd->on or rtd->db.active) and not rtd->db.configured and rtd->cd.hasTimedOut();
+      doWriteHighThreshold = rtd->writeHighThreshold;
+      doWriteLowThreshold = rtd->writeLowThreshold;
+    }
+    if (mustPerformInitHandling) {
+      // Please note that using the manual CS lock wrapper here is problematic. Might be a SPI
+      // or hardware specific issue where the CS needs to be pulled high and then low again
+      // between transfers
+      result = writeCfgReg(rtd->spiCookie, BASE_CFG);
+      if (result != returnvalue::OK) {
+        handleSpiError(rtd, result, "writeCfgReg");
+        continue;
+      }
+      if (doWriteLowThreshold) {
+        result = writeLowThreshold(rtd->spiCookie, rtd->lowThreshold);
+        if (result != returnvalue::OK) {
+          handleSpiError(rtd, result, "writeLowThreshold");
+        }
+      }
+      if (doWriteHighThreshold) {
+        result = writeHighThreshold(rtd->spiCookie, rtd->highThreshold);
+        if (result != returnvalue::OK) {
+          handleSpiError(rtd, result, "writeHighThreshold");
+        }
+      }
+      result = clearFaultStatus(rtd->spiCookie);
+      if (result != returnvalue::OK) {
+        handleSpiError(rtd, result, "clearFaultStatus");
+      }
+      MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+      rtd->db.configured = true;
+      rtd->db.active = true;
+    }
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::periodicReadReqHandling() {
+  using namespace MAX31865;
+  updateActiveRtdsArray();
+  // Now request one shot config for all active RTDs
+  for (auto& rtd : rtds) {
+    if (rtd == nullptr) {
+      continue;
+    }
+    if (activeRtdsArray[rtd->idx]) {
+      ReturnValue_t result = writeCfgReg(rtd->spiCookie, BASE_CFG | (1 << CfgBitPos::ONE_SHOT));
+      if (result != returnvalue::OK) {
+        handleSpiError(rtd, result, "writeCfgReg");
+        // Release mutex ASAP
+        return returnvalue::FAILED;
+      }
+    }
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::periodicReadHandling() {
+  using namespace MAX31865;
+  auto result = returnvalue::OK;
+  updateActiveRtdsArray();
+  // Now read the RTD values
+  for (auto& rtd : rtds) {
+    if (rtd == nullptr) {
+      continue;
+    }
+    if (activeRtdsArray[rtd->idx]) {
+      // Please note that using the manual CS lock wrapper here is problematic. Might be a SPI
+      // or hardware specific issue where the CS needs to be pulled high and then low again
+      // between transfers
+      uint16_t rtdVal = 0;
+      bool faultBitSet = false;
+      result = writeCfgReg(rtd->spiCookie, BASE_CFG);
+      if (result != returnvalue::OK) {
+        handleSpiError(rtd, result, "writeCfgReg");
+        continue;
+      }
+      result = readRtdVal(rtd->spiCookie, rtdVal, faultBitSet);
+      // sif::debug << "RTD Val: " << rtdVal << std::endl;
+      if (result != returnvalue::OK) {
+        handleSpiError(rtd, result, "readRtdVal");
+        continue;
+      }
+      MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+      if (faultBitSet) {
+        rtd->db.faultBitSet = faultBitSet;
+      }
+      rtd->db.adcCode = rtdVal;
+    }
+  }
+#if OBSW_RTD_AUTO_MODE == 0
+  for (auto& rtd : rtds) {
+    if (rtd == nullptr) {
+      continue;
+    }
+    // Even if a device was made inactive, turn off the bias here. If it was turned off, not
+    // necessary anymore..
+    if (rtd->on) {
+      result = writeBiasSel(Bias::OFF, rtd->spiCookie, BASE_CFG);
+    }
+  }
+#endif
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::initializeInterface(CookieIF* cookie) {
+  if (cookie == nullptr) {
+    throw std::invalid_argument("Invalid MAX31865 Reader Cookie");
+  }
+  auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
+  ReturnValue_t result = comIF->initializeInterface(rtdCookie->spiCookie);
+  if (result != returnvalue::OK) {
+    return result;
+  }
+  if (rtdCookie->idx > EiveMax31855::NUM_RTDS) {
+    throw std::invalid_argument("Invalid RTD index");
+  }
+  rtds[rtdCookie->idx] = rtdCookie;
+  MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+  if (dbLen == 0) {
+    dbLen = rtdCookie->db.getSerializedSize();
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::sendMessage(CookieIF* cookie, const uint8_t* sendData,
+                                              size_t sendLen) {
+  if (cookie == nullptr) {
+    return returnvalue::FAILED;
+  }
+  auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
+  if (rtdCookie == nullptr) {
+    return returnvalue::FAILED;
+  }
+  // Empty command.. don't fail for now
+  if (sendLen < 1) {
+    return returnvalue::OK;
+  }
+  MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+  if (mg.getLockResult() != returnvalue::OK) {
+    sif::warning << "Max31865RtdReader::sendMessage: Mutex lock failed" << std::endl;
+    return returnvalue::FAILED;
+  }
+  uint8_t cmdRaw = sendData[0];
+  if (cmdRaw > EiveMax31855::RtdCommands::NUM_CMDS) {
+    sif::warning << "Max31865RtdReader::sendMessage: Invalid command" << std::endl;
+    return returnvalue::FAILED;
+  }
+
+  auto thresholdHandler = [&]() {
+    rtdCookie->lowThreshold = (sendData[1] << 8) | sendData[2];
+    rtdCookie->highThreshold = (sendData[3] << 8) | sendData[4];
+    rtdCookie->writeLowThreshold = true;
+    rtdCookie->writeHighThreshold = true;
+  };
+
+  auto cmd = static_cast<EiveMax31855::RtdCommands>(sendData[0]);
+  switch (cmd) {
+    case (EiveMax31855::RtdCommands::ON): {
+      if (not rtdCookie->on) {
+        rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
+        rtdCookie->on = true;
+        rtdCookie->db.active = false;
+        rtdCookie->db.configured = false;
+        if (sendLen == 5) {
+          thresholdHandler();
+        }
+      }
+      break;
+    }
+    case (EiveMax31855::RtdCommands::ACTIVE): {
+      if (not rtdCookie->on) {
+        rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
+        rtdCookie->on = true;
+        rtdCookie->db.active = true;
+        rtdCookie->db.configured = false;
+      } else {
+        rtdCookie->db.active = true;
+      }
+      if (sendLen == 5) {
+        thresholdHandler();
+      }
+      break;
+    }
+    case (EiveMax31855::RtdCommands::OFF): {
+      rtdCookie->on = false;
+      rtdCookie->db.active = false;
+      rtdCookie->db.configured = false;
+      break;
+    }
+    case (EiveMax31855::RtdCommands::HIGH_TRESHOLD): {
+      if (sendLen == 3) {
+        rtdCookie->highThreshold = (sendData[1] << 8) | sendData[2];
+        rtdCookie->writeHighThreshold = true;
+      } else {
+        return returnvalue::FAILED;
+      }
+      break;
+    }
+    case (EiveMax31855::RtdCommands::LOW_THRESHOLD): {
+      if (sendLen == 3) {
+        rtdCookie->lowThreshold = (sendData[1] << 8) | sendData[2];
+        rtdCookie->writeLowThreshold = true;
+      } else {
+        return returnvalue::FAILED;
+      }
+      break;
+    }
+    case (EiveMax31855::RtdCommands::CFG): {
+      ReturnValue_t result = writeCfgReg(rtdCookie->spiCookie, BASE_CFG);
+      if (result != returnvalue::OK) {
+        handleSpiError(rtdCookie, result, "writeCfgReg");
+      }
+      break;
+    }
+    default: {
+      // TODO: Only implement if needed
+      break;
+    }
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::getSendSuccess(CookieIF* cookie) { return returnvalue::OK; }
+
+ReturnValue_t Max31865RtdPolling::requestReceiveMessage(CookieIF* cookie, size_t requestLen) {
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::readReceivedMessage(CookieIF* cookie, uint8_t** buffer,
+                                                      size_t* size) {
+  auto* rtdCookie = dynamic_cast<Max31865ReaderCookie*>(cookie);
+  if (rtdCookie == nullptr) {
+    return returnvalue::FAILED;
+  }
+  MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+  if (mg.getLockResult() != returnvalue::OK) {
+    // TODO: Emit warning
+    return returnvalue::FAILED;
+  }
+  uint8_t* exchangePtr = rtdCookie->exchangeBuf.data();
+  size_t serLen = 0;
+  auto result = rtdCookie->db.serialize(&exchangePtr, &serLen, rtdCookie->exchangeBuf.size(),
+                                        SerializeIF::Endianness::MACHINE);
+  if (result != returnvalue::OK) {
+    // TODO: Emit warning
+    return returnvalue::FAILED;
+  }
+  *buffer = reinterpret_cast<uint8_t*>(rtdCookie->exchangeBuf.data());
+  *size = serLen;
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::writeCfgReg(SpiCookie* cookie, uint8_t cfg) {
+  using namespace MAX31865;
+  return writeNToReg(cookie, CONFIG, 1, &cfg, nullptr);
+}
+
+ReturnValue_t Max31865RtdPolling::writeBiasSel(MAX31865::Bias bias, SpiCookie* cookie,
+                                               uint8_t baseCfg) {
+  using namespace MAX31865;
+  if (bias == MAX31865::Bias::OFF) {
+    baseCfg &= ~(1 << CfgBitPos::BIAS_SEL);
+  } else {
+    baseCfg |= (1 << CfgBitPos::BIAS_SEL);
+  }
+  return writeCfgReg(cookie, baseCfg);
+}
+
+ReturnValue_t Max31865RtdPolling::clearFaultStatus(SpiCookie* cookie) {
+  using namespace MAX31865;
+  // Read back the current configuration to avoid overwriting it when clearing te fault status
+  uint8_t currentCfg = 0;
+  auto result = readCfgReg(cookie, currentCfg);
+  if (result != returnvalue::OK) {
+    return result;
+  }
+  // Clear bytes 5, 3 and 2 which need to be 0
+  currentCfg &= ~0x2C;
+  currentCfg |= (1 << CfgBitPos::FAULT_STATUS_CLEAR);
+  return writeCfgReg(cookie, currentCfg);
+}
+
+ReturnValue_t Max31865RtdPolling::readCfgReg(SpiCookie* cookie, uint8_t& cfg) {
+  using namespace MAX31865;
+  uint8_t* replyPtr = nullptr;
+  auto result = readNFromReg(cookie, CONFIG, 1, &replyPtr);
+  if (result == returnvalue::OK) {
+    cfg = replyPtr[0];
+  }
+  return result;
+}
+
+ReturnValue_t Max31865RtdPolling::writeLowThreshold(SpiCookie* cookie, uint16_t val) {
+  using namespace MAX31865;
+  uint8_t cmd[2] = {static_cast<uint8_t>((val >> 8) & 0xff), static_cast<uint8_t>(val & 0xff)};
+  return writeNToReg(cookie, LOW_THRESHOLD, 2, cmd, nullptr);
+}
+
+ReturnValue_t Max31865RtdPolling::writeHighThreshold(SpiCookie* cookie, uint16_t val) {
+  using namespace MAX31865;
+  uint8_t cmd[2] = {static_cast<uint8_t>((val >> 8) & 0xff), static_cast<uint8_t>(val & 0xff)};
+  return writeNToReg(cookie, HIGH_THRESHOLD, 2, cmd, nullptr);
+}
+
+ReturnValue_t Max31865RtdPolling::readLowThreshold(SpiCookie* cookie, uint16_t& lowThreshold) {
+  using namespace MAX31865;
+  uint8_t* replyPtr = nullptr;
+  auto result = readNFromReg(cookie, LOW_THRESHOLD, 2, &replyPtr);
+  if (result == returnvalue::OK) {
+    lowThreshold = (replyPtr[0] << 8) | replyPtr[1];
+  }
+  return result;
+}
+
+ReturnValue_t Max31865RtdPolling::readHighThreshold(SpiCookie* cookie, uint16_t& highThreshold) {
+  using namespace MAX31865;
+  uint8_t* replyPtr = nullptr;
+  auto result = readNFromReg(cookie, HIGH_THRESHOLD, 2, &replyPtr);
+  if (result == returnvalue::OK) {
+    highThreshold = (replyPtr[0] << 8) | replyPtr[1];
+  }
+  return result;
+}
+
+ReturnValue_t Max31865RtdPolling::writeNToReg(SpiCookie* cookie, uint8_t reg, size_t n,
+                                              uint8_t* cmd, uint8_t** reply) {
+  using namespace MAX31865;
+  if (n > cmdBuf.size() - 1) {
+    return returnvalue::FAILED;
+  }
+  cmdBuf[0] = reg | WRITE_BIT;
+  for (size_t idx = 0; idx < n; idx++) {
+    cmdBuf[idx + 1] = cmd[idx];
+  }
+  return comIF->sendMessage(cookie, cmdBuf.data(), n + 1);
+}
+
+ReturnValue_t Max31865RtdPolling::readRtdVal(SpiCookie* cookie, uint16_t& val, bool& faultBitSet) {
+  using namespace MAX31865;
+  uint8_t* replyPtr = nullptr;
+  auto result = readNFromReg(cookie, RTD, 2, &replyPtr);
+  if (result != returnvalue::OK) {
+    return result;
+  }
+  if (replyPtr[1] & 0b0000'0001) {
+    faultBitSet = true;
+  }
+  // Shift 1 to the right to remove fault bit
+  val = ((replyPtr[0] << 8) | replyPtr[1]) >> 1;
+  return result;
+}
+
+ReturnValue_t Max31865RtdPolling::readNFromReg(SpiCookie* cookie, uint8_t reg, size_t n,
+                                               uint8_t** reply) {
+  using namespace MAX31865;
+  if (n > 4) {
+    return returnvalue::FAILED;
+  }
+  // Clear write bit in any case
+  reg &= ~WRITE_BIT;
+  cmdBuf[0] = reg;
+  std::memset(cmdBuf.data() + 1, 0, n);
+  ReturnValue_t result = comIF->sendMessage(cookie, cmdBuf.data(), n + 1);
+  if (result != returnvalue::OK) {
+    return returnvalue::FAILED;
+  }
+
+  size_t dummyLen = 0;
+  uint8_t* replyPtr = nullptr;
+  result = comIF->readReceivedMessage(cookie, &replyPtr, &dummyLen);
+  if (result != returnvalue::OK) {
+    return result;
+  }
+  if (reply != nullptr) {
+    *reply = replyPtr + 1;
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::updateActiveRtdsArray() {
+  MutexGuard mg(readerLock, LOCK_TYPE, LOCK_TIMEOUT, LOCK_CTX);
+  if (mg.getLockResult() != returnvalue::OK) {
+    sif::warning << "Max31865RtdReader::periodicReadHandling: Mutex lock failed" << std::endl;
+    return returnvalue::FAILED;
+  }
+  for (const auto& rtd : rtds) {
+    activeRtdsArray[rtd->idx] = rtdIsActive(rtd->idx);
+  }
+  return returnvalue::OK;
+}
+
+ReturnValue_t Max31865RtdPolling::handleSpiError(Max31865ReaderCookie* cookie, ReturnValue_t result,
+                                                 const char* ctx) {
+  cookie->db.spiErrorCount.value += 1;
+  sif::warning << "Max31865RtdReader::handleSpiError: " << ctx << " | Failed with result " << result
+               << std::endl;
+  return result;
+}
+
+ReturnValue_t Max31865RtdPolling::initialize() {
+  csLock = comIF->getCsMutex();
+  return SystemObject::initialize();
+}

linux/tcs/Max31865RtdPolling.h

@@ -0,0 +1,93 @@
+#ifndef LINUX_DEVICES_MAX31865RTDREADER_H_
+#define LINUX_DEVICES_MAX31865RTDREADER_H_
+
+#include <fsfw/ipc/MutexIF.h>
+#include <fsfw/tasks/ExecutableObjectIF.h>
+#include <fsfw/timemanager/clockDefinitions.h>
+#include <fsfw_hal/linux/spi/SpiComIF.h>
+#include <fsfw_hal/linux/spi/SpiCookie.h>
+#include <mission/tcs/Max31865Definitions.h>
+
+#include "devConf.h"
+#include "fsfw/devicehandlers/DeviceCommunicationIF.h"
+
+struct Max31865ReaderCookie : public CookieIF {
+  Max31865ReaderCookie(){};
+  Max31865ReaderCookie(object_id_t handlerId_, uint8_t idx_, const std::string& locString_,
+                       SpiCookie* spiCookie_)
+      : idx(idx_), handlerId(handlerId_), locString(locString_), spiCookie(spiCookie_) {}
+
+  uint8_t idx = 0;
+  object_id_t handlerId = objects::NO_OBJECT;
+
+  std::string locString = "";
+  std::array<uint8_t, 12> exchangeBuf{};
+  Countdown cd = Countdown(MAX31865::WARMUP_MS);
+
+  bool on = false;
+  bool writeLowThreshold = false;
+  bool writeHighThreshold = false;
+  uint16_t lowThreshold = 0;
+  uint16_t highThreshold = 0;
+  SpiCookie* spiCookie = nullptr;
+
+  // Exchange data buffer struct
+  EiveMax31855::ReadOutStruct db;
+};
+
+class Max31865RtdPolling : public SystemObject,
+                           public ExecutableObjectIF,
+                           public DeviceCommunicationIF {
+ public:
+  Max31865RtdPolling(object_id_t objectId, SpiComIF* lowLevelComIF, GpioIF* gpioIF);
+
+  ReturnValue_t performOperation(uint8_t operationCode) override;
+  ReturnValue_t initialize() override;
+
+ private:
+  std::vector<Max31865ReaderCookie*> rtds;
+  std::array<uint8_t, 4> cmdBuf = {};
+  std::array<bool, 12> activeRtdsArray{};
+  size_t dbLen = 0;
+  MutexIF* readerLock;
+  static constexpr MutexIF::TimeoutType LOCK_TYPE = MutexIF::TimeoutType::WAITING;
+  static constexpr uint32_t LOCK_TIMEOUT = 20;
+  static constexpr char LOCK_CTX[] = "Max31865RtdPolling";
+
+  SpiComIF* comIF;
+  GpioIF* gpioIF;
+  MutexIF::TimeoutType csTimeoutType = MutexIF::TimeoutType::WAITING;
+  uint32_t csTimeoutMs = spi::RTD_CS_TIMEOUT;
+  MutexIF* csLock = nullptr;
+
+  ReturnValue_t periodicInitHandling();
+  ReturnValue_t periodicReadReqHandling();
+  ReturnValue_t periodicReadHandling();
+
+  bool rtdIsActive(uint8_t idx);
+  ReturnValue_t writeCfgReg(SpiCookie* cookie, uint8_t cfg);
+  ReturnValue_t writeBiasSel(MAX31865::Bias bias, SpiCookie* cookie, uint8_t baseCfg);
+  ReturnValue_t readCfgReg(SpiCookie* cookie, uint8_t& cfg);
+  ReturnValue_t readRtdVal(SpiCookie* cookie, uint16_t& val, bool& faultBitSet);
+  ReturnValue_t writeLowThreshold(SpiCookie* cookie, uint16_t val);
+  ReturnValue_t writeHighThreshold(SpiCookie* cookie, uint16_t val);
+  ReturnValue_t readLowThreshold(SpiCookie* cookie, uint16_t& val);
+  ReturnValue_t readHighThreshold(SpiCookie* cookie, uint16_t& val);
+  ReturnValue_t clearFaultStatus(SpiCookie* cookie);
+
+  ReturnValue_t readNFromReg(SpiCookie* cookie, uint8_t reg, size_t n, uint8_t** reply);
+  ReturnValue_t writeNToReg(SpiCookie* cookie, uint8_t reg, size_t n, uint8_t* cmd,
+                            uint8_t** reply);
+
+  ReturnValue_t initializeInterface(CookieIF* cookie) override;
+  ReturnValue_t sendMessage(CookieIF* cookie, const uint8_t* sendData, size_t sendLen) override;
+  ReturnValue_t getSendSuccess(CookieIF* cookie) override;
+  ReturnValue_t requestReceiveMessage(CookieIF* cookie, size_t requestLen) override;
+  ReturnValue_t readReceivedMessage(CookieIF* cookie, uint8_t** buffer, size_t* size) override;
+
+  ReturnValue_t updateActiveRtdsArray();
+
+  ReturnValue_t handleSpiError(Max31865ReaderCookie* cookie, ReturnValue_t result, const char* ctx);
+};
+
+#endif /* LINUX_DEVICES_MAX31865RTDREADER_H_ */