fsfw/ipc/CommandMessageIF.h
2020-08-25 18:24:46 +02:00

74 lines
2.2 KiB
C++

#ifndef FSFW_IPC_COMMANDMESSAGEIF_H_
#define FSFW_IPC_COMMANDMESSAGEIF_H_
#include "MessageQueueMessageIF.h"
#include "FwMessageTypes.h"
#include "../returnvalues/HasReturnvaluesIF.h"
#define MAKE_COMMAND_ID( number ) ((MESSAGE_ID << 8) + (number))
typedef uint16_t Command_t;
class CommandMessageIF {
public:
/**
* Header consists of sender ID and command ID.
*/
static constexpr size_t HEADER_SIZE = MessageQueueMessageIF::HEADER_SIZE +
sizeof(Command_t);
/**
* This minimum size is derived from the interface requirement to be able
* to set a rejected reply, which contains a returnvalue and the initial
* command.
*/
static constexpr size_t MINIMUM_COMMAND_MESSAGE_SIZE =
CommandMessageIF::HEADER_SIZE + sizeof(ReturnValue_t) +
sizeof(Command_t);
static const uint8_t INTERFACE_ID = CLASS_ID::COMMAND_MESSAGE;
static const ReturnValue_t UNKNOWN_COMMAND = MAKE_RETURN_CODE(0x01);
static const uint8_t MESSAGE_ID = messagetypes::COMMAND;
//! Used internally, shall be ignored
static const Command_t CMD_NONE = MAKE_COMMAND_ID( 0 );
static const Command_t REPLY_COMMAND_OK = MAKE_COMMAND_ID( 1 );
//! Reply indicating that the current command was rejected,
//! par1 should contain the error code
static const Command_t REPLY_REJECTED = MAKE_COMMAND_ID( 2 );
virtual ~CommandMessageIF() {};
/**
* A command message shall have a uint16_t command ID field.
* @return
*/
virtual Command_t getCommand() const = 0;
/**
* A command message shall have a uint8_t message type ID field.
* @return
*/
virtual uint8_t getMessageType() const = 0;
/**
* A command message can be rejected and needs to offer a function
* to set a rejected reply
* @param reason
* @param initialCommand
*/
virtual void setReplyRejected(ReturnValue_t reason,
Command_t initialCommand) = 0;
/**
* Corrensonding getter function.
* @param initialCommand
* @return
*/
virtual ReturnValue_t getReplyRejectedReason(
Command_t* initialCommand = nullptr) const = 0;
virtual void setToUnknownCommand() = 0;
virtual void clear() = 0;
};
#endif /* FSFW_IPC_COMMANDMESSAGEIF_H_ */