added event which is triggered when config of pdec is corrupted

linux/ipcore/PdecConfig.cpp

@@ -22,11 +22,11 @@ ReturnValue_t PdecConfig::write() {
   if (result != returnvalue::OK) {
     return result;
   }
-  result = writeFrameHeaderFirstOctet();
+  result = writeFrameHeaderFirstWord();
   if (result != returnvalue::OK) {
     return result;
   }
-  result = writeFrameHeaderSecondOctet();
+  result = writeFrameHeaderSecondWord();
   if (result != returnvalue::OK) {
     return result;
   }
@@ -77,7 +77,7 @@ ReturnValue_t PdecConfig::setPositiveWindow(uint8_t pw) {
     return result;
   }
   // Rewrite second config word which contains the positive window parameter
-  writeFrameHeaderSecondOctet();
+  writeFrameHeaderSecondWord();
   return returnvalue::OK;
 }
 
@@ -92,7 +92,7 @@ ReturnValue_t PdecConfig::setNegativeWindow(uint8_t nw) {
     return result;
   }
   // Rewrite second config word which contains the negative window parameter
-  writeFrameHeaderSecondOctet();
+  writeFrameHeaderSecondWord();
   return returnvalue::OK;
 }
 
@@ -114,42 +114,14 @@ ReturnValue_t PdecConfig::getNegativeWindow(uint8_t& negativeWindow) {
   return returnvalue::OK;
 }
 
-ReturnValue_t PdecConfig::writeFrameHeaderFirstOctet() {
-  uint32_t word = 0;
-  word |= (VERSION_ID << 30);
-
-  // Setting the bypass flag and the control command flag should not have any
-  // implication on the operation of the PDEC IP Core
-  word |= (BYPASS_FLAG << 29);
-  word |= (CONTROL_COMMAND_FLAG << 28);
-
-  word |= (RESERVED_FIELD_A << 26);
-  word |= (SPACECRAFT_ID << 16);
-  word |= (VIRTUAL_CHANNEL << 10);
-  word |= (DUMMY_BITS << 8);
-  uint8_t positiveWindow = 0;
-  ReturnValue_t result =
-      localParameterHandler.getValue(pdecconfigdefs::paramkeys::POSITIVE_WINDOW, positiveWindow);
-  if (result != returnvalue::OK) {
-    return result;
-  }
-  word |= static_cast<uint32_t>(positiveWindow);
+ReturnValue_t PdecConfig::writeFrameHeaderFirstWord() {
+  uint32_t word = createFirstWord();
   *(memoryBaseAddress + FRAME_HEADER_OFFSET) = word;
   return returnvalue::OK;
 }
 
-ReturnValue_t PdecConfig::writeFrameHeaderSecondOctet() {
-  uint8_t negativeWindow = 0;
-  ReturnValue_t result =
-      localParameterHandler.getValue(pdecconfigdefs::paramkeys::NEGATIVE_WINDOW, negativeWindow);
-  if (result != returnvalue::OK) {
-    return result;
-  }
-  uint32_t word = 0;
-  word = 0;
-  word |= (static_cast<uint32_t>(negativeWindow) << 24);
-  word |= (HIGH_AU_MAP_ID << 16);
-  word |= (ENABLE_DERANDOMIZER << 8);
+ReturnValue_t PdecConfig::writeFrameHeaderSecondWord() {
+  uint32_t word = createSecondWord();
   *(memoryBaseAddress + FRAME_HEADER_OFFSET + 1) = word;
   return returnvalue::OK;
 }
@@ -189,3 +161,49 @@ uint8_t PdecConfig::getOddParity(uint8_t number) {
   parityBit = ~(countBits & 0x1) & 0x1;
   return parityBit;
 }
+
+uint32_t PdecConfig::createFirstWord() {
+	uint32_t word = 0;
+	word |= (VERSION_ID << 30);
+
+	// Setting the bypass flag and the control command flag should not have any
+	// implication on the operation of the PDEC IP Core
+	word |= (BYPASS_FLAG << 29);
+	word |= (CONTROL_COMMAND_FLAG << 28);
+
+	word |= (RESERVED_FIELD_A << 26);
+	word |= (SPACECRAFT_ID << 16);
+	word |= (VIRTUAL_CHANNEL << 10);
+	word |= (DUMMY_BITS << 8);
+	uint8_t positiveWindow = 0;
+	ReturnValue_t result =
+			localParameterHandler.getValue(pdecconfigdefs::paramkeys::POSITIVE_WINDOW, positiveWindow);
+	if (result != returnvalue::OK) {
+		return result;
+	}
+	word |= static_cast<uint32_t>(positiveWindow);
+	return word;
+}
+
+uint32_t PdecConfig::createSecondWord() {
+	uint8_t negativeWindow = 0;
+	ReturnValue_t result =
+			localParameterHandler.getValue(pdecconfigdefs::paramkeys::NEGATIVE_WINDOW, negativeWindow);
+	if (result != returnvalue::OK) {
+		return result;
+	}
+	uint32_t word = 0;
+	word = 0;
+	word |= (static_cast<uint32_t>(negativeWindow) << 24);
+	word |= (HIGH_AU_MAP_ID << 16);
+	word |= (ENABLE_DERANDOMIZER << 8);
+	return word;
+}
+
+uint32_t PdecConfig::readbackFirstWord() {
+	return *(memoryBaseAddress + FRAME_HEADER_OFFSET);
+}
+
+uint32_t PdecConfig::readbackSecondWord() {
+	return *(memoryBaseAddress + FRAME_HEADER_OFFSET + 1);
+}

linux/ipcore/PdecConfig.h

@@ -48,6 +48,34 @@ class PdecConfig {
   ReturnValue_t getPositiveWindow(uint8_t& positiveWindow);
   ReturnValue_t getNegativeWindow(uint8_t& negativeWindow);
 
+  /**
+	 * @brief	Creates the first word of the PDEC configuration
+	 *
+	 * @return The created config word
+	 */
+	uint32_t createFirstWord();
+
+	/**
+	 * @brief	Creates the second word of the PDEC configuration
+	 *
+	 * @return The created config word
+	 */
+	uint32_t createSecondWord();
+
+	/**
+	 * @brief	Reads first config word from the config memory
+	 *
+	 * @return The config word
+	 */
+	uint32_t readbackFirstWord();
+
+	/**
+	 * @brief	Reads the second config word from the config memory
+	 *
+	 * @return The config word
+	 */
+	uint32_t readbackSecondWord();
+
  private:
   // TC transfer frame configuration parameters
   static const uint8_t VERSION_ID = 0;
@@ -102,8 +130,8 @@ class PdecConfig {
    */
   ReturnValue_t createPersistentConfig();
 
-  ReturnValue_t writeFrameHeaderFirstOctet();
-  ReturnValue_t writeFrameHeaderSecondOctet();
+  ReturnValue_t writeFrameHeaderFirstWord();
+  ReturnValue_t writeFrameHeaderSecondWord();
   void writeMapConfig();
 
   /**

linux/ipcore/PdecHandler.cpp

@@ -478,6 +478,7 @@ bool PdecHandler::checkFrameAna(uint32_t pdecFar) {
     }
     case (FrameAna_t::FRAME_DIRTY): {
       triggerEvent(INVALID_TC_FRAME, FRAME_DIRTY_RETVAL);
+      checkConfig();
       sif::warning << "PdecHandler::checkFrameAna: Frame dirty" << std::endl;
       break;
     }
@@ -577,6 +578,15 @@ void PdecHandler::handleIReason(uint32_t pdecFar, ReturnValue_t parameter1) {
   }
 }
 
+void PdecHandler::checkConfig() {
+	uint32_t firstWord = pdecConfig.createFirstWord();
+	uint32_t secondWord = pdecConfig.createSecondWord();
+	if (firstWord != pdecConfig.readbackFirstWord() or
+			secondWord != pdecConfig.readbackSecondWord()) {
+		triggerEvent(PDEC_CONFIG_CORRUPTED, firstWord, secondWord);
+	}
+}
+
 void PdecHandler::handleNewTc() {
   ReturnValue_t result = returnvalue::OK;
 

linux/ipcore/PdecHandler.h

@@ -282,6 +282,11 @@ class PdecHandler : public SystemObject,
    */
   void handleIReason(uint32_t pdecFar, ReturnValue_t parameter1);
 
+  /**
+   * @brief	Checks if PDEC configuration is still correct
+   */
+  void checkConfig();
+
   /**
    * @brief   Handles the reception of new TCs. Reads the pointer to the storage location of the
    *          new TC segment, extracts the PUS packet and forwards the data to the object

linux/ipcore/pdec.h

@@ -71,6 +71,10 @@ static constexpr Event OPEN_IRQ_FILE_FAILED = event::makeEvent(SUBSYSTEM_ID, 13,
 //! [EXPORT] : [COMMENT] PDEC initialization failed. This might also be due to the persistent
 //! confiuration never becoming available, for example due to SD card issues.
 static constexpr Event PDEC_INIT_FAILED = event::makeEvent(SUBSYSTEM_ID, 14, severity::HIGH);
+//! [EXPORT] : [COMMENT] The PDEC configuration area has been corrupted
+//! P1: The first configuration word
+//! P2: The second configuration word
+static constexpr Event PDEC_CONFIG_CORRUPTED = event::makeEvent(SUBSYSTEM_ID, 15, severity::HIGH);
 
 // Action IDs
 static constexpr ActionId_t PRINT_CLCW = 0;