class to generate pdec config words

bsp_q7s/boardconfig/busConf.h

@@ -16,6 +16,9 @@ static constexpr char UART_STAR_TRACKER_DEV[] = "/dev/ttyUL8";
 static constexpr char UART_GNSS_0_DEV[] = "/dev/ttyUL0";
 static constexpr char UART_GNSS_1_DEV[] = "/dev/ttyUL2";
 
+static constexpr char UIO_PDEC_REGISTERS[] = "/dev/uio0";
+static constexpr char UIO_PDEC_MEMORY[] = "/dev/uio2";
+
 namespace gpioNames {
     static constexpr char GYRO_0_ADIS_CS[] = "gyro_0_adis_chip_select";
     static constexpr char GYRO_1_L3G_CS[] = "gyro_1_l3g_chip_select";

bsp_q7s/core/ObjectFactory.cpp

@@ -960,7 +960,8 @@ void ObjectFactory::createCcsdsComponents(LinuxLibgpioIF *gpioComIF) {
 
     gpioComIF->addGpios(gpioCookiePdec);
 
-    new PdecHandler(objects::PDEC_HANDLER, objects::CCSDS_HANDLER, gpioComIF, gpioIds::PDEC_RESET);
+    new PdecHandler(objects::PDEC_HANDLER, objects::CCSDS_HANDLER, gpioComIF, gpioIds::PDEC_RESET,
+            std::string(q7s::UIO_PDEC_MEMORY), std::string(q7s::UIO_PDEC_REGISTERS));
 
 #if BOARD_TE0720 == 0
     GpioCookie* gpioRS485Chip = new GpioCookie;

linux/obc/CMakeLists.txt

@@ -2,6 +2,7 @@ target_sources(${TARGET_NAME} PUBLIC
 	PapbVcInterface.cpp
 	Ptme.cpp
 	PdecHandler.cpp
+	PdecConfig.cpp
 )
 
 

linux/obc/PdecConfig.cpp

@@ -0,0 +1,33 @@
+#include "PdecConfig.h"
+#include "fsfw/serviceinterface/ServiceInterface.h"
+
+PdecConfig::PdecConfig() {
+    initialize();
+}
+
+PdecConfig::~PdecConfig() {
+
+}
+
+void PdecConfig::initialize() {
+    uint32_t word = 0;
+    word |= (VERSION_ID << 30);
+    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);
+    word |= POSITIVE_WINDOW;
+    configWords[0] = word;
+    word = 0;
+    word |= (NEGATIVE_WINDOW << 24);
+}
+
+uint32_t PdecConfig::getConfigWord(uint8_t wordNo) {
+    if (wordNo >= CONFIG_WORDS_NUM) {
+        sif::error << "PdecConfig::getConfigWord: Invalid word number" << std::endl;
+        return 0;
+    }
+    return configWords[wordNo];
+}

linux/obc/PdecConfig.h

@@ -5,29 +5,46 @@
 #include <cstring>
 
 /**
- * @brief   PDEC specific configuration parameters.
+ * @brief   This class generates the configuration words for the configuration memory of the PDEC
+ *          IP Cores.
+ *
+ * @details Fields are initialized according to pecification in PDEC datasheet section 6.11.3.1
+ *          PROM usage.
  *
  * @author  J. Meier
  */
-namespace PdecConfig {
+class PdecConfig {
 
-    // Access to register space of PDEC via the AXI to AHB bridge
+public:
-    static const char UIO_PDEC_REGISTERS[] = "/dev/uio0";
+    PdecConfig();
-    // Direct access to memory area in DDR assigned to PDEC
+    virtual ~PdecConfig();
-    static const char UIO_PDEC_MEMORY[] = "/dev/uio2";
 
+    /**
+     * @brief   Returns the configuration word by specifying the position.
+     */
+    uint32_t getConfigWord(uint8_t wordNo);
+
+private:
     // TC transfer frame configuration parameters
     static const uint8_t VERSION_ID = 0;
-//    static const uint8_t BYPASS_FLAG = 1;
+    // BD Frames
-//    static const uint8_t CONTROL_COMMAND_FLAG = 1;
+    static const uint8_t BYPASS_FLAG = 1;
-    static const uint8_t BYPASS_FLAG = 0;
     static const uint8_t CONTROL_COMMAND_FLAG = 0;
+
     static const uint8_t VIRTUAL_CHANNEL = 0;
     static const uint8_t RESERVED_FIELD_A = 0;
     static const uint16_t SPACECRAFT_ID = 0x274;
+    static const uint16_t DUMMY_BITS = 0;
     // Parameters to control the FARM for AD frames
+    // Set here for future use
     static const uint8_t POSITIVE_WINDOW = 10;
     static const uint8_t NEGATIVE_WINDOW = 151;
+
+    static const uint8_t CONFIG_WORDS_NUM = 2;
+
+    uint32_t configWords[CONFIG_WORDS_NUM];
+
+    void initialize();
 };
 
 #endif /* LINUX_OBC_PDECCONFIG_H_ */

linux/obc/PdecHandler.cpp

@@ -9,10 +9,11 @@
 #include "fsfw/tmtcservices/TmTcMessage.h"
 #include "fsfw/objectmanager/ObjectManager.h"
 
-PdecHandler::PdecHandler(object_id_t objectId, object_id_t tcDestinationId, LinuxLibgpioIF* gpioComIF,
+PdecHandler::PdecHandler(object_id_t objectId, object_id_t tcDestinationId,
-        gpioId_t pdecReset) :
+        LinuxLibgpioIF* gpioComIF, gpioId_t pdecReset, std::string uioMemory,
+        std::string uioRegisters) :
         SystemObject(objectId), tcDestinationId(tcDestinationId), gpioComIF(gpioComIF), pdecReset(
-                pdecReset) {
+                pdecReset), uioMemory(uioMemory), uioRegisters(uioRegisters) {
 
 }
 
@@ -58,7 +59,7 @@ ReturnValue_t PdecHandler::initialize() {
 }
 
 ReturnValue_t PdecHandler::getRegisterAddress() {
-    int fd = open(PdecConfig::UIO_PDEC_REGISTERS, O_RDWR);
+    int fd = open(uioRegisters.c_str(), O_RDWR);
     if (fd < 1) {
         sif::warning << "PdecHandler::getRegisterAddress: Invalid UIO device file" << std::endl;
         return RETURN_FAILED;
@@ -76,7 +77,7 @@ ReturnValue_t PdecHandler::getRegisterAddress() {
 }
 
 ReturnValue_t PdecHandler::getMemoryBaseAddress() {
-    int fd = open(PdecConfig::UIO_PDEC_MEMORY, O_RDWR);
+    int fd = open(uioMemory.c_str(), O_RDWR);
     if (fd < 1) {
         sif::warning << "PdecHandler::getMemoryBaseAddress: Invalid UIO device file" << std::endl;
         return RETURN_FAILED;
@@ -94,17 +95,11 @@ ReturnValue_t PdecHandler::getMemoryBaseAddress() {
 }
 
 void PdecHandler::writePdecConfig()  {
-    PdecParams_t pdecParams;
+
-    pdecParams.versionId = 0;
+    PdecConfig pdecConfig;
-    pdecParams.bypassFlag = PdecConfig::BYPASS_FLAG;
+
-    pdecParams.controlCommandFlag = PdecConfig::CONTROL_COMMAND_FLAG;
+    *memoryBaseAddress = pdecConfig.getConfigWord(0);
-    pdecParams.reservedFieldA = 0;
+    *(memoryBaseAddress + 1) = pdecConfig.getConfigWord(1);
-    pdecParams.spacecraftId = PdecConfig::SPACECRAFT_ID;
-    pdecParams.virtualChannelId = PdecConfig::VIRTUAL_CHANNEL;
-    pdecParams.dummy = 0;
-    pdecParams.positiveWindow = PdecConfig::POSITIVE_WINDOW;
-    pdecParams.negativeWindow = PdecConfig::NEGATIVE_WINDOW;
-    std::memcpy(memoryBaseAddress, &pdecParams, sizeof(pdecParams));
 
 //    uint8_t routeToPm = calcMapAddrEntry(PM_BUFFER);
     // Configure all MAP IDs as invalid

linux/obc/PdecHandler.h

@@ -37,9 +37,11 @@ public:
      * @param tcDestinationId   Object ID of object responsible for processing TCs.
      * @param gpioComIF Pointer to GPIO interace responsible for driving GPIOs.
      * @param pdecReset GPIO ID of GPIO connected to the reset signal of the PDEC.
+     * @param uioMemory String of uio device file same mapped to the PDEC memory space
+     * @param uioregsiters  String of uio device file same mapped to the PDEC register space
      */
     PdecHandler(object_id_t objectId, object_id_t tcDestinationId, LinuxLibgpioIF* gpioComIF,
-            gpioId_t pdecReset);
+            gpioId_t pdecReset, std::string uioMemory, std::string uioRegisters);
 
     virtual ~PdecHandler();
 
@@ -148,25 +150,6 @@ private:
         INCORRECT_BC_CC
     };
 
-    typedef struct PdecParams {
-        uint8_t versionId : 2 ;
-        uint8_t bypassFlag : 1;
-        uint8_t controlCommandFlag : 1;
-        uint8_t reservedFieldA : 2;
-        uint16_t spacecraftId : 10;
-        uint8_t virtualChannelId : 6;
-        uint8_t dummy : 2;
-        uint8_t positiveWindow;
-        uint8_t negativeWindow;
-        //Authentication unit not used for EIVE
-        uint8_t auMapIdPointer = 0;
-        // De-randomizing enabled
-        uint8_t derandomiserConfig = 1;
-        // Only used when AU is enabled. Enables the use of an external recovery lac counter.
-        // The AU requires a lac counter to generate the signature.
-        uint8_t recoveryLacConfig = 0;
-    } PdecParams_t;
-
     enum class State: uint8_t {
         INIT,
         RUNNING,
@@ -269,10 +252,6 @@ private:
 
     LinuxLibgpioIF* gpioComIF = nullptr;
 
-    StorageManagerIF* tcStore = nullptr;
-
-    State state = State::INIT;
-
     /**
      * Reset signal is required to hold PDEC in reset state until the configuration has been
      * written to the appropriate memory space.
@@ -280,6 +259,16 @@ private:
      */
     gpioId_t pdecReset = gpio::NO_GPIO;
 
+    // UIO device file giving access to the PDEC memory space
+    std::string uioMemory;
+
+    // UIO device file giving access to the PDEC register space
+    std::string uioRegisters;
+
+    StorageManagerIF* tcStore = nullptr;
+
+    State state = State::INIT;
+
     /**
      * Pointer pointing to base address of the PDEC memory space.
      * This address is equivalent with the base address of the section named configuration area in