PTME_LOCK atomic boolean and related handling

2023-03-31 16:51:30 +02:00 · 2023-03-31 16:51:30 +02:00 · 55a22c840c
commit 55a22c840c
parent caa7c20adf
14 changed files with 165 additions and 102 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -23,6 +23,9 @@ will consitute of a breaking change warranting a new major release:
  used to disable ongoing dumps or to prevent writes to the PTME VC. This allows cleaner reset
  handling of the PTME. All 4 VC/store tasks were attached to the COM mode tree and are commanded
  as part of the COM sequence as well to ensure consistent state with the CCSDS IP core handler.
+- Added `PTME_LOCKED` boolean lock which is used to lock the PTME so it is not used by the VC tasks
+  anymore. This lock will be controlled by the CCSDS IP core handler and is locked when the PTME
+  needs to be reset. Examples for this are datarate changes.

 ## Fixed

--- a/bsp_q7s/core/ObjectFactory.cpp
+++ b/bsp_q7s/core/ObjectFactory.cpp
@ -125,6 +125,7 @@ using gpio::Levels;

 ResetArgs RESET_ARGS_GNSS;
 std::atomic_bool LINK_STATE = CcsdsIpCoreHandler::LINK_DOWN;
+std::atomic_bool PTME_LOCKED = false;
 std::atomic_uint16_t I2C_FATAL_ERRORS = 0;

 void Factory::setStaticFrameworkObjectIds() {
@ -789,14 +790,14 @@ ReturnValue_t ObjectFactory::createCcsdsComponents(CcsdsComponentArgs& args) {

  *args.ipCoreHandler =
      new CcsdsIpCoreHandler(objects::CCSDS_HANDLER, objects::CCSDS_PACKET_DISTRIBUTOR, *ptmeConfig,
-                             LINK_STATE, &args.gpioComIF, gpios);
+                             LINK_STATE, &args.gpioComIF, gpios, PTME_LOCKED);
  // This VC will receive all live TM
  auto* vcWithQueue =
      new VirtualChannelWithQueue(objects::PTME_VC0_LIVE_TM, ccsds::VC0, "PTME VC0 LIVE TM", *ptme,
                                  LINK_STATE, args.tmStore, 500);
  args.liveDestination = vcWithQueue;
-  auto* liveTask =
-      new LiveTmTask(objects::LIVE_TM_TASK, args.pusFunnel, args.cfdpFunnel, *vcWithQueue);
+  auto* liveTask = new LiveTmTask(objects::LIVE_TM_TASK, args.pusFunnel, args.cfdpFunnel,
+                                  *vcWithQueue, PTME_LOCKED);
  liveTask->connectModeTreeParent(satsystem::com::SUBSYSTEM);

  // Set up log store.
@ -804,15 +805,17 @@ ReturnValue_t ObjectFactory::createCcsdsComponents(CcsdsComponentArgs& args) {
                                LINK_STATE);
  LogStores logStores(args.stores);
  // Core task which handles the LOG store and takes care of dumping it as TM using a VC directly
-  auto* logStore = new PersistentLogTmStoreTask(objects::LOG_STORE_AND_TM_TASK, args.ipcStore,
-                                                logStores, *vc, *SdCardManager::instance());
+  auto* logStore =
+      new PersistentLogTmStoreTask(objects::LOG_STORE_AND_TM_TASK, args.ipcStore, logStores, *vc,
+                                   *SdCardManager::instance(), PTME_LOCKED);
  logStore->connectModeTreeParent(satsystem::com::SUBSYSTEM);

  vc = new VirtualChannel(objects::PTME_VC2_HK_TM, ccsds::VC2, "PTME VC2 HK TM", *ptme, LINK_STATE);
  // Core task which handles the HK store and takes care of dumping it as TM using a VC directly
  auto* hkStore = new PersistentSingleTmStoreTask(
      objects::HK_STORE_AND_TM_TASK, args.ipcStore, *args.stores.hkStore, *vc,
-      persTmStore::DUMP_HK_STORE_DONE, persTmStore::DUMP_HK_STORE_DONE, *SdCardManager::instance());
+      persTmStore::DUMP_HK_STORE_DONE, persTmStore::DUMP_HK_STORE_DONE, *SdCardManager::instance(),
+      PTME_LOCKED);
  hkStore->connectModeTreeParent(satsystem::com::SUBSYSTEM);

  vc = new VirtualChannel(objects::PTME_VC3_CFDP_TM, ccsds::VC3, "PTME VC3 CFDP TM", *ptme,
@ -821,7 +824,7 @@ ReturnValue_t ObjectFactory::createCcsdsComponents(CcsdsComponentArgs& args) {
  auto* cfdpTask = new PersistentSingleTmStoreTask(
      objects::CFDP_STORE_AND_TM_TASK, args.ipcStore, *args.stores.cfdpStore, *vc,
      persTmStore::DUMP_CFDP_STORE_DONE, persTmStore::DUMP_CFDP_CANCELLED,
-      *SdCardManager::instance());
+      *SdCardManager::instance(), PTME_LOCKED);
  cfdpTask->connectModeTreeParent(satsystem::com::SUBSYSTEM);

  ReturnValue_t result = (*args.ipCoreHandler)->connectModeTreeParent(satsystem::com::SUBSYSTEM);
--- a/bsp_q7s/core/ObjectFactory.h
+++ b/bsp_q7s/core/ObjectFactory.h
@ -24,6 +24,7 @@ class AcsBoardAssembly;
 class GpioIF;

 extern std::atomic_uint16_t I2C_FATAL_ERRORS;
+extern std::atomic_bool PTME_LOCKED;

 namespace ObjectFactory {

--- a/linux/ipcore/PapbVcInterface.cpp
+++ b/linux/ipcore/PapbVcInterface.cpp
@ -61,7 +61,7 @@ void PapbVcInterface::startPacketTransfer() { *vcBaseReg = CONFIG_START; }
 void PapbVcInterface::completePacketTransfer() { *vcBaseReg = CONFIG_END; }

 ReturnValue_t PapbVcInterface::pollInterfaceReadiness(uint32_t maxPollRetries,
-    bool checkReadyState) const {
+                                                      bool checkReadyState) const {
  uint32_t busyIdx = 0;
  nextDelay.tv_nsec = FIRST_NON_NULL_DELAY_NS;

@ -74,7 +74,7 @@ ReturnValue_t PapbVcInterface::pollInterfaceReadiness(uint32_t maxPollRetries,
    if (not busy) {
      return returnvalue::OK;
    }
-    if(checkReadyState and not ready) {
+    if (checkReadyState and not ready) {
      return PAPB_BUSY;
    }

--- a/mission/com/CcsdsIpCoreHandler.cpp
+++ b/mission/com/CcsdsIpCoreHandler.cpp
@ -15,9 +15,11 @@

 CcsdsIpCoreHandler::CcsdsIpCoreHandler(object_id_t objectId, object_id_t tcDestination,
                                       PtmeConfig& ptmeConfig, std::atomic_bool& linkState,
-                                       GpioIF* gpioIF, PtmeGpios gpioIds)
+                                       GpioIF* gpioIF, PtmeGpios gpioIds,
+                                       std::atomic_bool& ptmeLocked)
    : SystemObject(objectId),
      linkState(linkState),
+      ptmeLocked(ptmeLocked),
      tcDestination(tcDestination),
      parameterHelper(this),
      actionHelper(this, nullptr),
@ -35,6 +37,7 @@ CcsdsIpCoreHandler::~CcsdsIpCoreHandler() = default;

 ReturnValue_t CcsdsIpCoreHandler::performOperation(uint8_t operationCode) {
  readCommandQueue();
+  performPtmeUpdateWhenApplicable();
  return returnvalue::OK;
 }

@ -127,10 +130,15 @@ ReturnValue_t CcsdsIpCoreHandler::getParameter(uint8_t domainId, uint8_t uniqueI
      return HasParametersIF::INVALID_VALUE;
    }
    parameterWrapper->set(batPriorityParam);
-    if (mode == MODE_ON) {
-      updateBatPriorityOnTxOff = true;
-    } else if (mode == MODE_OFF) {
-      updateBatPriorityFromParam();
+    if (newVal != batPriorityParam) {
+      // This ensures that the BAT priority is updated at some point when an update of the PTME is
+      // allowed
+      updateContext.updateBatPrio = true;
+      // If we are off, we can do the update after X cycles. Otherwise, wait until the transmitter
+      // goes off.
+      if (mode == MODE_OFF) {
+        initPtmeUpdateAfterXCycles();
+      }
    }
    return returnvalue::OK;
  }
@ -148,36 +156,12 @@ ReturnValue_t CcsdsIpCoreHandler::executeAction(ActionId_t actionId, MessageQueu
                                                const uint8_t* data, size_t size) {
  ReturnValue_t result = returnvalue::OK;
  switch (actionId) {
-    case SET_LOW_RATE: {
-      submode = static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_LOW);
-      result = ptmeConfig.setRate(RATE_100KBPS);
-      break;
-    }
-    case SET_HIGH_RATE: {
-      submode = static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_HIGH);
-      result = ptmeConfig.setRate(RATE_500KBPS);
-      break;
-    }
    case ARBITRARY_RATE: {
      uint32_t bitrate = 0;
      SerializeAdapter::deSerialize(&bitrate, &data, &size, SerializeIF::Endianness::BIG);
      result = ptmeConfig.setRate(bitrate);
      break;
    }
-    case EN_TRANSMITTER: {
-      enableTransmit();
-      if (mode == HasModesIF::MODE_OFF) {
-        mode = HasModesIF::MODE_ON;
-      }
-      return EXECUTION_FINISHED;
-    }
-    case DISABLE_TRANSMITTER: {
-      disableTransmit();
-      if (mode == HasModesIF::MODE_ON) {
-        mode = HasModesIF::MODE_OFF;
-      }
-      return EXECUTION_FINISHED;
-    }
    case ENABLE_TX_CLK_MANIPULATOR: {
      result = ptmeConfig.configTxManipulator(true);
      break;
@ -206,12 +190,8 @@ ReturnValue_t CcsdsIpCoreHandler::executeAction(ActionId_t actionId, MessageQueu
 void CcsdsIpCoreHandler::updateLinkState() { linkState = LINK_UP; }

 void CcsdsIpCoreHandler::enableTransmit() {
-  // Reset PTME on each transmit enable.
-  updateBatPriorityFromParam();
-#ifndef TE0720_1CFA
  gpioIF->pullHigh(ptmeGpios.enableTxClock);
  gpioIF->pullHigh(ptmeGpios.enableTxData);
-#endif
  linkState = LINK_UP;
 }

@ -236,34 +216,23 @@ ReturnValue_t CcsdsIpCoreHandler::checkModeCommand(Mode_t mode, Submode_t submod
 }

 void CcsdsIpCoreHandler::startTransition(Mode_t mode, Submode_t submode) {
-  auto rateSet = [&](uint32_t rate) {
-    ReturnValue_t result = ptmeConfig.setRate(rate);
-    if (result == returnvalue::OK) {
-      this->mode = HasModesIF::MODE_ON;
-    }
-  };
+  triggerEvent(CHANGING_MODE, mode, submode);
  if (mode == HasModesIF::MODE_ON) {
-    enableTransmit();
-    if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_DEFAULT)) {
-      com::Datarate currentDatarate = com::getCurrentDatarate();
-      if (currentDatarate == com::Datarate::LOW_RATE_MODULATION_BPSK) {
-        rateSet(RATE_100KBPS);
-      } else if (currentDatarate == com::Datarate::HIGH_RATE_MODULATION_0QPSK) {
-        rateSet(RATE_500KBPS);
-      }
-    } else if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_HIGH)) {
-      rateSet(RATE_500KBPS);
-    } else if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_LOW)) {
-      rateSet(RATE_100KBPS);
+    if (this->submode != submode) {
+      initPtmeUpdateAfterXCycles();
+      updateContext.enableTransmitAfterPtmeUpdate = true;
+      updateContext.updateClockRate = true;
+      this->submode = submode;
+      this->mode = mode;
+      updateContext.setModeAfterUpdate = true;
+      return;
    }
-
+    // No rate change, so enable transmitter right away.
+    enableTransmit();
  } else if (mode == HasModesIF::MODE_OFF) {
    disableTransmit();
-    this->mode = HasModesIF::MODE_OFF;
  }
-  this->submode = submode;
-  modeHelper.modeChanged(mode, submode);
-  announceMode(false);
+  setMode(mode, submode);
 }

 void CcsdsIpCoreHandler::announceMode(bool recursive) { triggerEvent(MODE_INFO, mode, submode); }
@ -274,9 +243,9 @@ void CcsdsIpCoreHandler::disableTransmit() {
  gpioIF->pullLow(ptmeGpios.enableTxData);
 #endif
  linkState = LINK_DOWN;
-  if (updateBatPriorityOnTxOff) {
-    updateBatPriorityFromParam();
-    updateBatPriorityOnTxOff = false;
+  // Some parameters need update and transmitter is off now.
+  if (updateContext.updateBatPrio or updateContext.updateClockRate) {
+    initPtmeUpdateAfterXCycles();
  }
 }

@ -294,21 +263,9 @@ ModeTreeChildIF& CcsdsIpCoreHandler::getModeTreeChildIF() { return *this; }

 object_id_t CcsdsIpCoreHandler::getObjectId() const { return SystemObject::getObjectId(); }

-void CcsdsIpCoreHandler::enablePrioritySelectMode() {
-  ptmeConfig.enableBatPriorityBit(true);
-  // Reset the PTME
-  gpioIF->pullLow(ptmeGpios.ptmeResetn);
-  usleep(10);
-  gpioIF->pullHigh(ptmeGpios.ptmeResetn);
-}
+void CcsdsIpCoreHandler::enablePrioritySelectMode() { ptmeConfig.enableBatPriorityBit(true); }

-void CcsdsIpCoreHandler::disablePrioritySelectMode() {
-  ptmeConfig.enableBatPriorityBit(false);
-  // Reset the PTME
-  gpioIF->pullLow(ptmeGpios.ptmeResetn);
-  usleep(10);
-  gpioIF->pullHigh(ptmeGpios.ptmeResetn);
-}
+void CcsdsIpCoreHandler::disablePrioritySelectMode() { ptmeConfig.enableBatPriorityBit(false); }

 void CcsdsIpCoreHandler::updateBatPriorityFromParam() {
  if (batPriorityParam == 0) {
@ -317,3 +274,78 @@ void CcsdsIpCoreHandler::updateBatPriorityFromParam() {
    enablePrioritySelectMode();
  }
 }
+
+void CcsdsIpCoreHandler::setMode(Mode_t mode, Submode_t submode) {
+  this->submode = submode;
+  this->mode = mode;
+  modeHelper.modeChanged(mode, submode);
+  announceMode(false);
+}
+
+void CcsdsIpCoreHandler::performPtmeUpdateWhenApplicable() {
+  if (not updateContext.performPtmeUpdateAfterXCycles) {
+    return;
+  }
+  if (updateContext.ptmeUpdateCycleCount >= 2) {
+    if (updateContext.updateBatPrio) {
+      updateBatPriorityFromParam();
+      updateContext.updateBatPrio = false;
+    }
+    ReturnValue_t result;
+    if (updateContext.updateClockRate) {
+      if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_DEFAULT)) {
+        com::Datarate currentDatarate = com::getCurrentDatarate();
+        if (currentDatarate == com::Datarate::LOW_RATE_MODULATION_BPSK) {
+          result = ptmeConfig.setRate(RATE_100KBPS);
+        } else if (currentDatarate == com::Datarate::HIGH_RATE_MODULATION_0QPSK) {
+          result = ptmeConfig.setRate(RATE_500KBPS);
+        }
+      } else if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_HIGH)) {
+        result = ptmeConfig.setRate(RATE_500KBPS);
+      } else if (submode == static_cast<Submode_t>(com::CcsdsSubmode::DATARATE_LOW)) {
+        result = ptmeConfig.setRate(RATE_100KBPS);
+      }
+      if (result != returnvalue::OK) {
+        sif::error << "CcsdsIpCoreHandler: Setting datarate failed" << std::endl;
+      }
+      updateContext.updateClockRate = false;
+    }
+    bool doResetPtme = true;
+    if (not updateContext.updateBatPrio and not updateContext.updateClockRate) {
+      doResetPtme = false;
+    }
+    finishPtmeUpdateAfterXCycles(doResetPtme);
+    return;
+  }
+  updateContext.ptmeUpdateCycleCount++;
+}
+
+void CcsdsIpCoreHandler::resetPtme() {
+  gpioIF->pullLow(ptmeGpios.ptmeResetn);
+  usleep(10);
+  gpioIF->pullHigh(ptmeGpios.ptmeResetn);
+}
+
+void CcsdsIpCoreHandler::initPtmeUpdateAfterXCycles() {
+  if (not updateContext.performPtmeUpdateAfterXCycles) {
+    updateContext.performPtmeUpdateAfterXCycles = true;
+    updateContext.ptmeUpdateCycleCount = 0;
+  }
+}
+
+void CcsdsIpCoreHandler::finishPtmeUpdateAfterXCycles(bool doResetPtme) {
+  if (doResetPtme) {
+    resetPtme();
+  }
+  ptmeLocked = false;
+  updateContext.performPtmeUpdateAfterXCycles = false;
+  updateContext.ptmeUpdateCycleCount = 0;
+  if (updateContext.enableTransmitAfterPtmeUpdate) {
+    enableTransmit();
+    updateContext.enableTransmitAfterPtmeUpdate = false;
+  }
+  if (updateContext.setModeAfterUpdate) {
+    setMode(mode, submode);
+    updateContext.setModeAfterUpdate = false;
+  }
+}
--- a/mission/com/CcsdsIpCoreHandler.h
+++ b/mission/com/CcsdsIpCoreHandler.h
@ -79,7 +79,8 @@ class CcsdsIpCoreHandler : public SystemObject,
   * @param enTxData  GPIO ID of RS485 tx data enable
   */
  CcsdsIpCoreHandler(object_id_t objectId, object_id_t tcDestination, PtmeConfig& ptmeConfig,
-                     std::atomic_bool& linkState, GpioIF* gpioIF, PtmeGpios gpioIds);
+                     std::atomic_bool& linkState, GpioIF* gpioIF, PtmeGpios gpioIds,
+                     std::atomic_bool& ptmeLocked);

  ~CcsdsIpCoreHandler();

@ -137,9 +138,8 @@ class CcsdsIpCoreHandler : public SystemObject,
  //! [EXPORT] : [COMMENT] Received action message with unknown action id
  static const ReturnValue_t COMMAND_NOT_IMPLEMENTED = MAKE_RETURN_CODE(0xA0);

-  // using VirtualChannelMap = std::unordered_map<VcId_t, VirtualChannelWithQueue*>;
-  // VirtualChannelMap virtualChannelMap;
  std::atomic_bool& linkState;
+  std::atomic_bool& ptmeLocked;

  object_id_t tcDestination;

@ -158,7 +158,15 @@ class CcsdsIpCoreHandler : public SystemObject,
  PtmeGpios ptmeGpios;
  // BAT priority bit on by default to enable priority selection mode for the PTME.
  uint8_t batPriorityParam = 0;
-  bool updateBatPriorityOnTxOff = false;
+
+  struct UpdateContext {
+    bool updateBatPrio = false;
+    bool updateClockRate = false;
+    bool enableTransmitAfterPtmeUpdate = false;
+    uint8_t ptmeUpdateCycleCount = 0;
+    bool performPtmeUpdateAfterXCycles = false;
+    bool setModeAfterUpdate = false;
+  } updateContext{};

  GpioIF* gpioIF = nullptr;

@ -180,6 +188,8 @@ class CcsdsIpCoreHandler : public SystemObject,
   */
  void disableTransmit();

+  void performPtmeUpdateWhenApplicable();
+
  /**
   * The following set of functions configure the mode of the PTME bandwith allocation table (BAT)
   * module. This consists of the following 2 steps:
@ -189,6 +199,11 @@ class CcsdsIpCoreHandler : public SystemObject,
  void enablePrioritySelectMode();
  void disablePrioritySelectMode();
  void updateBatPriorityFromParam();
+
+  void setMode(Mode_t mode, Submode_t submode);
+  void resetPtme();
+  void initPtmeUpdateAfterXCycles();
+  void finishPtmeUpdateAfterXCycles(bool doResetPtme);
 };

 #endif /* CCSDSHANDLER_H_ */
--- a/mission/com/LiveTmTask.cpp
+++ b/mission/com/LiveTmTask.cpp
@ -6,12 +6,13 @@
 #include <fsfw/timemanager/Stopwatch.h>

 LiveTmTask::LiveTmTask(object_id_t objectId, PusTmFunnel& pusFunnel, CfdpTmFunnel& cfdpFunnel,
-                       VirtualChannelWithQueue& channel)
+                       VirtualChannelWithQueue& channel, const std::atomic_bool& ptmeLocked)
    : SystemObject(objectId),
      modeHelper(this),
      pusFunnel(pusFunnel),
      cfdpFunnel(cfdpFunnel),
-      channel(channel) {
+      channel(channel),
+      ptmeLocked(ptmeLocked) {
  requestQueue = QueueFactory::instance()->createMessageQueue();
 }

@ -19,7 +20,7 @@ ReturnValue_t LiveTmTask::performOperation(uint8_t opCode) {
  readCommandQueue();
  while (true) {
    bool performWriteOp = true;
-    if (mode == MODE_OFF) {
+    if (mode == MODE_OFF or ptmeLocked) {
      performWriteOp = false;
    }

--- a/mission/com/LiveTmTask.h
+++ b/mission/com/LiveTmTask.h
@ -18,7 +18,7 @@ class LiveTmTask : public SystemObject,
                   public ModeTreeConnectionIF {
 public:
  LiveTmTask(object_id_t objectId, PusTmFunnel& pusFunnel, CfdpTmFunnel& cfdpFunnel,
-             VirtualChannelWithQueue& channel);
+             VirtualChannelWithQueue& channel, const std::atomic_bool& ptmeLocked);

  ReturnValue_t performOperation(uint8_t opCode) override;
  ReturnValue_t initialize() override;
@ -33,6 +33,7 @@ class LiveTmTask : public SystemObject,
  CfdpTmFunnel& cfdpFunnel;
  VirtualChannelWithQueue& channel;
  uint32_t packetCounter = 0;
+  const std::atomic_bool& ptmeLocked;

  void readCommandQueue(void);

--- a/mission/com/PersistentLogTmStoreTask.cpp
+++ b/mission/com/PersistentLogTmStoreTask.cpp
@ -5,8 +5,9 @@

 PersistentLogTmStoreTask::PersistentLogTmStoreTask(object_id_t objectId, StorageManagerIF& ipcStore,
                                                   LogStores stores, VirtualChannel& channel,
-                                                   SdCardMountedIF& sdcMan)
-    : TmStoreTaskBase(objectId, ipcStore, channel, sdcMan),
+                                                   SdCardMountedIF& sdcMan,
+                                                   const std::atomic_bool& ptmeLocked)
+    : TmStoreTaskBase(objectId, ipcStore, channel, sdcMan, ptmeLocked),
      stores(stores),
      okStoreContext(persTmStore::DUMP_OK_STORE_DONE, persTmStore::DUMP_OK_CANCELLED),
      notOkStoreContext(persTmStore::DUMP_NOK_STORE_DONE, persTmStore::DUMP_NOK_CANCELLED),
--- a/mission/com/PersistentLogTmStoreTask.h
+++ b/mission/com/PersistentLogTmStoreTask.h
@ -22,7 +22,8 @@ struct LogStores {
 class PersistentLogTmStoreTask : public TmStoreTaskBase, public ExecutableObjectIF {
 public:
  PersistentLogTmStoreTask(object_id_t objectId, StorageManagerIF& ipcStore, LogStores tmStore,
-                           VirtualChannel& channel, SdCardMountedIF& sdcMan);
+                           VirtualChannel& channel, SdCardMountedIF& sdcMan,
+                           const std::atomic_bool& ptmeLocked);

  ReturnValue_t performOperation(uint8_t opCode) override;

--- a/mission/com/PersistentSingleTmStoreTask.cpp
+++ b/mission/com/PersistentSingleTmStoreTask.cpp
@ -6,8 +6,9 @@

 PersistentSingleTmStoreTask::PersistentSingleTmStoreTask(
    object_id_t objectId, StorageManagerIF& ipcStore, PersistentTmStoreWithTmQueue& tmStore,
-    VirtualChannel& channel, Event eventIfDumpDone, Event eventIfCancelled, SdCardMountedIF& sdcMan)
-    : TmStoreTaskBase(objectId, ipcStore, channel, sdcMan),
+    VirtualChannel& channel, Event eventIfDumpDone, Event eventIfCancelled, SdCardMountedIF& sdcMan,
+    const std::atomic_bool& ptmeLocked)
+    : TmStoreTaskBase(objectId, ipcStore, channel, sdcMan, ptmeLocked),
      storeWithQueue(tmStore),
      dumpContext(eventIfDumpDone, eventIfCancelled) {}

@ -27,7 +28,7 @@ ReturnValue_t PersistentSingleTmStoreTask::performOperation(uint8_t opCode) {
      TaskFactory::delayTask(10);
    } else {
      // TODO: Would be best to remove this, but not delaying here can lead to evil issues.
-      TaskFactory::delayTask(2);
+      TaskFactory::delayTask(10);
    }
  }
 }
--- a/mission/com/PersistentSingleTmStoreTask.h
+++ b/mission/com/PersistentSingleTmStoreTask.h
@ -12,7 +12,7 @@ class PersistentSingleTmStoreTask : public TmStoreTaskBase, public ExecutableObj
  PersistentSingleTmStoreTask(object_id_t objectId, StorageManagerIF& ipcStore,
                              PersistentTmStoreWithTmQueue& storeWithQueue, VirtualChannel& channel,
                              Event eventIfDumpDone, Event eventIfCancelled,
-                              SdCardMountedIF& sdcMan);
+                              SdCardMountedIF& sdcMan, const std::atomic_bool& ptmeLocked);

  ReturnValue_t performOperation(uint8_t opCode) override;

--- a/mission/com/TmStoreTaskBase.cpp
+++ b/mission/com/TmStoreTaskBase.cpp
@ -10,13 +10,15 @@
 #include "mission/persistentTmStoreDefs.h"

 TmStoreTaskBase::TmStoreTaskBase(object_id_t objectId, StorageManagerIF& ipcStore,
-                                 VirtualChannel& channel, SdCardMountedIF& sdcMan)
+                                 VirtualChannel& channel, SdCardMountedIF& sdcMan,
+                                 const std::atomic_bool& ptmeLocked)
    : SystemObject(objectId),
      modeHelper(this),
      ipcStore(ipcStore),
      tmReader(&timeReader),
      channel(channel),
-      sdcMan(sdcMan) {
+      sdcMan(sdcMan),
+      ptmeLocked(ptmeLocked) {
  requestQueue = QueueFactory::instance()->createMessageQueue(10);
 }

@ -99,7 +101,8 @@ ReturnValue_t TmStoreTaskBase::handleOneDump(PersistentTmStoreWithTmQueue& store
    cancelDump(dumpContext, store, false);
    return returnvalue::FAILED;
  }
-  if (not channel.isBusy()) {
+  // It is assumed that the PTME will only be locked for a short period (e.g. to change datarate).
+  if (not channel.isBusy() and not ptmeLocked) {
    performDump(store, dumpContext, dumpPerformed);
  } else {
    // The PTME might be at full load, so it might sense to delay for a bit to let it do
--- a/mission/com/TmStoreTaskBase.h
+++ b/mission/com/TmStoreTaskBase.h
@ -40,7 +40,7 @@ class TmStoreTaskBase : public SystemObject,
  };

  TmStoreTaskBase(object_id_t objectId, StorageManagerIF& ipcStore, VirtualChannel& channel,
-                  SdCardMountedIF& sdcMan);
+                  SdCardMountedIF& sdcMan, const std::atomic_bool& ptmeLocked);

  ReturnValue_t initialize() override;
  ReturnValue_t connectModeTreeParent(HasModeTreeChildrenIF& parent) override;
@ -52,6 +52,8 @@ class TmStoreTaskBase : public SystemObject,
  PusTmReader tmReader;
  CdsShortTimeStamper timeReader;
  VirtualChannel& channel;
+  SdCardMountedIF& sdcMan;
+  const std::atomic_bool& ptmeLocked;

  Mode_t mode = HasModesIF::MODE_OFF;
  Countdown sdCardCheckCd = Countdown(800);
@ -62,7 +64,6 @@ class TmStoreTaskBase : public SystemObject,

  bool storesInitialized = false;
  bool fileHasSwapped = false;
-  SdCardMountedIF& sdcMan;

  void readCommandQueue(void);