src/fsfw/cfdp/handler/DestHandler.cpp

@@ -56,7 +56,7 @@ const cfdp::DestHandler::FsmResult& cfdp::DestHandler::performStateMachine() {
     }
     return updateFsmRes(errorIdx);
   }
-  if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
+  if (fsmRes.state == CfdpState::BUSY_CLASS_1_NACKED) {
     if (fsmRes.step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
       for (auto infoIter = destParams.packetListRef.begin();
            infoIter != destParams.packetListRef.end();) {
@@ -88,7 +88,7 @@ const cfdp::DestHandler::FsmResult& cfdp::DestHandler::performStateMachine() {
     }
     return updateFsmRes(errorIdx);
   }
-  if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
+  if (fsmRes.state == CfdpState::BUSY_CLASS_2_ACKED) {
     // TODO: Will be implemented at a later stage
 #if FSFW_CPP_OSTREAM_ENABLED == 1
     sif::warning << "CFDP state machine for acknowledged mode not implemented yet" << std::endl;
@@ -231,9 +231,9 @@ ReturnValue_t cfdp::DestHandler::handleEofPdu(const cfdp::PacketInfo& info) {
     destParams.user.eofRecvIndication(getTransactionId());
   }
   if (fsmRes.step == TransactionStep::RECEIVING_FILE_DATA_PDUS) {
-    if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
+    if (fsmRes.state == CfdpState::BUSY_CLASS_1_NACKED) {
       fsmRes.step = TransactionStep::TRANSFER_COMPLETION;
-    } else if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
+    } else if (fsmRes.state == CfdpState::BUSY_CLASS_2_ACKED) {
       fsmRes.step = TransactionStep::SENDING_ACK_PDU;
     }
   }
@@ -278,7 +278,7 @@ ReturnValue_t cfdp::DestHandler::handleMetadataParseError(ReturnValue_t result,
 }
 
 ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, MetadataInfo& info) {
-  if (fsmRes.state != CfdpStates::IDLE) {
+  if (fsmRes.state != CfdpState::IDLE) {
     // According to standard, discard metadata PDU if we are busy
     return OK;
   }
@@ -342,9 +342,9 @@ ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, Met
   }
   fsmRes.step = TransactionStep::TRANSACTION_START;
   if (reader.getTransmissionMode() == TransmissionMode::UNACKNOWLEDGED) {
-    fsmRes.state = CfdpStates::BUSY_CLASS_1_NACKED;
+    fsmRes.state = CfdpState::BUSY_CLASS_1_NACKED;
   } else if (reader.getTransmissionMode() == TransmissionMode::ACKNOWLEDGED) {
-    fsmRes.state = CfdpStates::BUSY_CLASS_2_ACKED;
+    fsmRes.state = CfdpState::BUSY_CLASS_2_ACKED;
   }
   transactionParams.checksumType = info.getChecksumType();
   transactionParams.closureRequested = info.isClosureRequested();
@@ -363,7 +363,7 @@ ReturnValue_t cfdp::DestHandler::startTransaction(MetadataPduReader& reader, Met
   return result;
 }
 
-cfdp::CfdpStates cfdp::DestHandler::getCfdpState() const { return fsmRes.state; }
+cfdp::CfdpState cfdp::DestHandler::getCfdpState() const { return fsmRes.state; }
 
 ReturnValue_t cfdp::DestHandler::handleTransferCompletion() {
   ReturnValue_t result;
@@ -378,13 +378,13 @@ ReturnValue_t cfdp::DestHandler::handleTransferCompletion() {
   result = noticeOfCompletion();
   if (result != OK) {
   }
-  if (fsmRes.state == CfdpStates::BUSY_CLASS_1_NACKED) {
+  if (fsmRes.state == CfdpState::BUSY_CLASS_1_NACKED) {
     if (transactionParams.closureRequested) {
       fsmRes.step = TransactionStep::SENDING_FINISHED_PDU;
     } else {
       finish();
     }
-  } else if (fsmRes.state == CfdpStates::BUSY_CLASS_2_ACKED) {
+  } else if (fsmRes.state == CfdpState::BUSY_CLASS_2_ACKED) {
     fsmRes.step = TransactionStep::SENDING_FINISHED_PDU;
   }
   return OK;
@@ -426,7 +426,7 @@ void cfdp::DestHandler::fileErrorHandler(Event event, ReturnValue_t result,
 void cfdp::DestHandler::finish() {
   transactionParams.reset();
   destParams.packetListRef.clear();
-  fsmRes.state = CfdpStates::IDLE;
+  fsmRes.state = CfdpState::IDLE;
   fsmRes.step = TransactionStep::IDLE;
 }
 

src/fsfw/cfdp/handler/DestHandler.h

@@ -84,7 +84,7 @@ class DestHandler {
     ReturnValue_t result = returnvalue::OK;
     CallStatus callStatus = CallStatus::CALL_AFTER_DELAY;
     TransactionStep step = TransactionStep::IDLE;
-    CfdpStates state = CfdpStates::IDLE;
+    CfdpState state = CfdpState::IDLE;
     uint32_t packetsSent = 0;
     uint8_t errors = 0;
     std::array<ReturnValue_t, 3> errorCodes = {};
@@ -117,7 +117,7 @@ class DestHandler {
 
   ReturnValue_t initialize();
 
-  [[nodiscard]] CfdpStates getCfdpState() const;
+  [[nodiscard]] CfdpState getCfdpState() const;
   [[nodiscard]] TransactionStep getTransactionStep() const;
   [[nodiscard]] const TransactionId& getTransactionId() const;
   [[nodiscard]] const DestHandlerParams& getDestHandlerParams() const;

src/fsfw/cfdp/handler/SourceHandler.cpp

@@ -1,3 +1,39 @@
 #include "SourceHandler.h"
 
 SourceHandler::SourceHandler(SourceHandlerParams params, FsfwSourceParams fsfwParams) {}
+
+void SourceHandler::fsmNacked() {
+  if (step == TransactionStep::IDLE) {
+    step = TransactionStep::TRANSACTION_START;
+  }
+  if (step == TransactionStep::TRANSACTION_START) {
+    // TODO: Use put request information to start the transaction
+    step = TransactionStep::CRC_PROCEDURE;
+  }
+  if (step == TransactionStep::CRC_PROCEDURE) {
+    // TODO: Perform CRC procedure: Generate the CRC32 from the file.
+  }
+  if (step == TransactionStep::SENDING_METADATA) {
+    // TODO: Prepare and send metadata PDU
+  }
+  if (step == TransactionStep::SENDING_FILE_DATA) {
+    // TODO: Prepare and send file data PDUs
+  }
+  if (step == TransactionStep::SENDING_EOF) {
+    // TODO: Send EOF PDU
+  }
+  if (step == TransactionStep::WAIT_FOR_FINISH) {
+    // TODO: In case this is a request with closure, wait for finish.
+  }
+  if (step == TransactionStep::NOTICE_OF_COMPLETION) {
+    // TODO: Notice of completion
+  }
+}
+void SourceHandler::stateMachine() {
+  if (state == cfdp::CfdpState::IDLE) {
+    return;
+  }
+  if (state == cfdp::CfdpState::BUSY_CLASS_1_NACKED) {
+    return fsmNacked();
+  }
+}

src/fsfw/cfdp/handler/SourceHandler.h

@@ -3,6 +3,7 @@
 
 #include <cstdint>
 
+#include "defs.h"
 #include "fsfw/events/EventReportingProxyIF.h"
 #include "fsfw/storagemanager/StorageManagerIF.h"
 
@@ -20,6 +21,8 @@ class SourceHandler {
  public:
   SourceHandler(SourceHandlerParams params, FsfwSourceParams fsfwParams);
 
+  void stateMachine();
+
  private:
   enum class TransactionStep : uint8_t {
     IDLE = 0,
@@ -32,6 +35,10 @@ class SourceHandler {
     WAIT_FOR_FINISH = 7,
     NOTICE_OF_COMPLETION = 8
   };
+  cfdp::CfdpState state;
+  TransactionStep step;
+
+  void fsmNacked();
 };
 
 #endif  // FSFW_CFDP_CFDPSOURCEHANDLER_H

src/fsfw/cfdp/handler/defs.h

@@ -5,7 +5,7 @@
 
 namespace cfdp {
 
-enum class CfdpStates { IDLE, BUSY_CLASS_1_NACKED, BUSY_CLASS_2_ACKED, SUSPENDED };
+enum class CfdpState { IDLE, BUSY_CLASS_1_NACKED, BUSY_CLASS_2_ACKED, SUSPENDED };
 
 static constexpr uint8_t SSID = SUBSYSTEM_ID::CFDP;
 

unittests/cfdp/handler/testDestHandler.cpp

@@ -87,7 +87,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
     userMock.metadataRecvd.pop();
     REQUIRE(fsMock.fileMap.find(destName) != fsMock.fileMap.end());
     REQUIRE(res.result == OK);
-    REQUIRE(res.state == CfdpStates::BUSY_CLASS_1_NACKED);
+    REQUIRE(res.state == CfdpState::BUSY_CLASS_1_NACKED);
     REQUIRE(res.step == DestHandler::TransactionStep::RECEIVING_FILE_DATA_PDUS);
   };
 
@@ -102,7 +102,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
 
   auto eofCheck = [&](const cfdp::DestHandler::FsmResult& res, const TransactionId& id) {
     REQUIRE(res.result == OK);
-    REQUIRE(res.state == CfdpStates::IDLE);
+    REQUIRE(res.state == CfdpState::IDLE);
     REQUIRE(res.errors == 0);
     REQUIRE(res.step == DestHandler::TransactionStep::IDLE);
     // Assert that the packet was deleted after handling
@@ -120,7 +120,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
   auto fileDataPduCheck = [&](const cfdp::DestHandler::FsmResult& res,
                               const std::vector<store_address_t>& idsToCheck) {
     REQUIRE(res.result == OK);
-    REQUIRE(res.state == CfdpStates::BUSY_CLASS_1_NACKED);
+    REQUIRE(res.state == CfdpState::BUSY_CLASS_1_NACKED);
     REQUIRE(res.step == DestHandler::TransactionStep::RECEIVING_FILE_DATA_PDUS);
     for (const auto id : idsToCheck) {
       REQUIRE(not tcStore.hasDataAtId(id));
@@ -129,7 +129,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
   };
 
   SECTION("State") {
-    CHECK(destHandler.getCfdpState() == CfdpStates::IDLE);
+    CHECK(destHandler.getCfdpState() == CfdpState::IDLE);
     CHECK(destHandler.getTransactionStep() == DestHandler::TransactionStep::IDLE);
   }
 
@@ -138,7 +138,7 @@ TEST_CASE("CFDP Dest Handler", "[cfdp]") {
     CHECK(res.result == OK);
     CHECK(res.callStatus == CallStatus::CALL_AFTER_DELAY);
     CHECK(res.errors == 0);
-    CHECK(destHandler.getCfdpState() == CfdpStates::IDLE);
+    CHECK(destHandler.getCfdpState() == CfdpState::IDLE);
     CHECK(destHandler.getTransactionStep() == DestHandler::TransactionStep::IDLE);
   }