63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
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/**
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* @file BCFrame.h
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* @brief This file defines the BCFrame class.
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* @date 24.04.2013
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* @author baetz
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*/
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#ifndef BCFRAME_H_
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#define BCFRAME_H_
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#include <framework/datalinklayer/CCSDSReturnValuesIF.h>
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/**
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* Small helper class to identify a BcFrame.
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* @ingroup ccsds_handling
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*/
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class BcFrame: public CCSDSReturnValuesIF {
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private:
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static const uint8_t UNLOCK_COMMAND = 0b00000000;//! Identifier for a certain BC Command.
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static const uint8_t SET_V_R_1 = 0b10000010;//! Identifier for a certain BC Command.
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static const uint8_t SET_V_R_2 = 0b00000000;//! Identifier for a certain BC Command.
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public:
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uint8_t byte1; //!< First content byte
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uint8_t byte2; //!< Second content byte
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uint8_t vR; //!< vR byte
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/**
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* Simple default constructor.
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*/
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BcFrame() :
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byte1(0), byte2(0), vR(0) {
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}
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/**
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* Main and only useful method of the class.
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* With the buffer and size information passed, the class passes the content
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* and checks if it is one of the two valid BC Command Frames.
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* @param inBuffer Content of the frame to check,
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* @param inSize Size of the data to check.
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* @return - #BC_ILLEGAL_COMMAND if it is no command.
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* - #BC_IS_UNLOCK_COMMAND if it is an unlock command.
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* - #BC_IS_SET_VR_COMMAND if it is such.
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*/
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ReturnValue_t initialize(const uint8_t* inBuffer, uint16_t inSize) {
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ReturnValue_t returnValue = BC_ILLEGAL_COMMAND;
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if (inSize == 1) {
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byte1 = inBuffer[0];
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if (byte1 == UNLOCK_COMMAND) {
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returnValue = BC_IS_UNLOCK_COMMAND;
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}
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} else if (inSize == 3) {
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byte1 = inBuffer[0];
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byte2 = inBuffer[1];
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vR = inBuffer[2];
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if (byte1 == SET_V_R_1 && byte2 == SET_V_R_2) {
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returnValue = BC_IS_SET_VR_COMMAND;
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}
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}
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return returnValue;
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}
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};
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#endif /* BCFRAME_H_ */
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