eive-obsw/mission/devices/SyrlinksHkHandler.h

#ifndef MISSION_DEVICES_SYRLINKSHKHANDLER_H_
#define MISSION_DEVICES_SYRLINKSHKHANDLER_H_

#include <fsfw/devicehandlers/DeviceHandlerBase.h>
#include <mission/devices/devicedefinitions/SyrlinksDefinitions.h>
#include <string.h>

/**
 * @brief	This is the device handler for the syrlinks transceiver. It handles the command
 *          transmission and reading of housekeeping data via the housekeeping interface. The
 *          transmission of telemetry and the reception of telecommands is handled by an additional
 *          class.
 *
 * @author	J. Meier
 */
class SyrlinksHkHandler : public DeviceHandlerBase {
 public:
  SyrlinksHkHandler(object_id_t objectId, object_id_t comIF, CookieIF* comCookie);
  virtual ~SyrlinksHkHandler();

  /**
   * @brief   Sets mode to MODE_NORMAL. Can be used for debugging.
   */
  void setModeNormal();

 protected:
  void doStartUp() override;
  void doShutDown() override;
  ReturnValue_t buildNormalDeviceCommand(DeviceCommandId_t* id) override;
  ReturnValue_t buildTransitionDeviceCommand(DeviceCommandId_t* id) override;
  void fillCommandAndReplyMap() override;
  ReturnValue_t buildCommandFromCommand(DeviceCommandId_t deviceCommand, const uint8_t* commandData,
                                        size_t commandDataLen) override;
  ReturnValue_t scanForReply(const uint8_t* start, size_t remainingSize, DeviceCommandId_t* foundId,
                             size_t* foundLen) override;
  ReturnValue_t interpretDeviceReply(DeviceCommandId_t id, const uint8_t* packet) override;
  void setNormalDatapoolEntriesInvalid() override;
  uint32_t getTransitionDelayMs(Mode_t modeFrom, Mode_t modeTo) override;
  ReturnValue_t initializeLocalDataPool(localpool::DataPool& localDataPoolMap,
                                        LocalDataPoolManager& poolManager) override;
  LocalPoolDataSetBase* getDataSetHandle(sid_t sid) override;

 private:
  static const uint8_t INTERFACE_ID = CLASS_ID::SYRLINKS_HANDLER;

  static const ReturnValue_t CRC_FAILURE = MAKE_RETURN_CODE(0xA0);
  static const ReturnValue_t UART_FRAMIN_OR_PARITY_ERROR_ACK = MAKE_RETURN_CODE(0xA1);
  static const ReturnValue_t BAD_CHARACTER_ACK = MAKE_RETURN_CODE(0xA2);
  static const ReturnValue_t BAD_PARAMETER_VALUE_ACK = MAKE_RETURN_CODE(0xA3);
  static const ReturnValue_t BAD_END_OF_FRAME_ACK = MAKE_RETURN_CODE(0xA4);
  static const ReturnValue_t UNKNOWN_COMMAND_ID_ACK = MAKE_RETURN_CODE(0xA5);
  static const ReturnValue_t BAD_CRC_ACK = MAKE_RETURN_CODE(0xA6);
  static const ReturnValue_t REPLY_WRONG_SIZE = MAKE_RETURN_CODE(0xA7);
  static const ReturnValue_t MISSING_START_FRAME_CHARACTER = MAKE_RETURN_CODE(0xA8);

  static const uint8_t CRC_INITIAL_VALUE = 0x0;

  std::string resetCommand = "<C04:5A5A:FF41>";
  std::string readRxStatusRegCommand = "<E00::825B>";
  std::string setTxModeStandby = "<W04:4000:7E58>";
  /** W - write, 04 - 4 bytes in data field, 01 - value, 40 register to write value */
  std::string setTxModeModulation = "<W04:4001:4D69>";
  std::string setTxModeCw = "<W04:4010:4968>";
  std::string readTxStatus = "<R02:40:7555>";
  std::string readTxWaveform = "<R02:44:B991>";
  std::string readTxAgcValueHighByte = "<R02:46:DFF3>";
  std::string readTxAgcValueLowByte = "<R02:47:ECC2>";

  /**
   * In some cases it is not possible to extract from the received reply the information about
   * the associated command. This variable is thus used to remember the command id.
   */
  DeviceCommandId_t rememberCommandId = SYRLINKS::NONE;

  SYRLINKS::RxDataset rxDataset;
  SYRLINKS::TxDataset txDataset;

  uint8_t agcValueHighByte;

  uint8_t commandBuffer[SYRLINKS::MAX_COMMAND_SIZE];

  /**
   * This object is used to store the id of the next command to execute. This controls the
   * read out of multiple registers which can not be fetched with one single command.
   */
  DeviceCommandId_t nextCommand = SYRLINKS::READ_RX_STATUS_REGISTERS;

  /**
   * @brief   This function converts an uint16_t into its hexadecimal string representation.
   *
   * @param intValue  The value to convert.
   *
   * @return  An std::string object containing the hex representation of intValue.
   */
  std::string convertUint16ToHexString(uint16_t intValue);

  /**
   * @brief   This function converts a hex number represented by to chars to an 8-bit integer.
   *
   * @param twoChars    Pointer to the two characters representing the hex value.
   *
   * @details E.g. when twoChars points to an array with the two characters "A5" then the function
   *          will return 0xA5.
   * @return  The converted integer.
   */
  uint8_t convertHexStringToUint8(const char* twoChars);

  /**
   * @brief   This function converts a hex number represented by 4 chars to an uint16_t.
   *
   * @param   Pointer to the fourCharacters representing the 16-bit integer.
   *
   * @return  The uint16_t result.
   */
  uint16_t convertHexStringToUint16(const char* fourChars);

  /**
   * @brief   Function converts a hex number represented by 6 or 8 characters to an uint32_t.
   *
   * @param characters    Pointer to the hex characters array.
   * @param numberOfChars Number of characters representing the hex value. Must be 6 or 8.
   *
   * @return  The uint32_t value.
   */
  uint32_t convertHexStringToUint32(const char* characters, uint8_t numberOfChars);

  /**
   * @brief   This function parses the status reply
   * @param status    Pointer to the status information.
   *
   * @details Some commands reply with a status message giving information about the preceding
   *          command transmission and/or execution was successful.
   */
  ReturnValue_t parseReplyStatus(const char* status);

  /**
   * @brief   Function verifies the received reply from the syrlinks by recalculating and
   *          comparing the crc.
   *
   * @param packet    Pointer to the received reply.
   * @param size  Size of the whole packet including the crc and the packet termination
   *              character '>'.
   *
   * @return  RETURN_OK if successful, otherwise RETURN_FAILED.
   */
  ReturnValue_t verifyReply(const uint8_t* packet, uint8_t size);

  /**
   * @brief   This function extracts the data from a rx status registers reply and writes the
   *          information to the status registers dataset.
   * @param packet    Pointer to the reply packet.
   */
  void parseRxStatusRegistersReply(const uint8_t* packet);

  /**
   * @brief   This function writes the read tx status register to the txStatusDataset.
   * @param packet    Pointer to the received packet.
   */
  void parseTxStatusReply(const uint8_t* packet);

  /**
   * @brief   This function writes the received waveform configuration to the txDataset.
   */
  void parseTxWaveformReply(const uint8_t* packet);

  /**
   * @brief   The agc value is split over two registers. The parse agc functions are used to get
   *          the values from the received reply and write them into the txDataset.
   */
  void parseAgcLowByte(const uint8_t* packet);
  void parseAgcHighByte(const uint8_t* packet);
};

#endif /* MISSION_DEVICES_SYRLINKSHKHANDLER_H_ */