fsfw/datapool/PoolRawAccessHelper.h

107 lines
3.5 KiB
C++

/**
* @file PoolRawAccessHelper.h
*
* @date 22.12.2019
*/
#ifndef FRAMEWORK_DATAPOOL_POOLRAWACCESSHELPER_H_
#define FRAMEWORK_DATAPOOL_POOLRAWACCESSHELPER_H_
#include <framework/returnvalues/HasReturnvaluesIF.h>
#include <framework/datapool/DataSet.h>
/**
* @brief This helper function simplifies accessing data pool entries
* via PoolRawAccess
* @details Can be used for a Housekeeping Service
* like ECSS PUS Service 3 if the type of the datapool entries is unknown.
* The provided dataset can be serialized into a provided buffer automatically by
* providing a buffer of pool IDs
* @ingroup data_pool
*/
class PoolRawAccessHelper: public HasReturnvaluesIF {
public:
/**
* Call this constructor if a dataset needs to be serialized via
* Pool Raw Access
* @param dataSet_ This dataset will be used to perform thread-safe reading
* @param poolIdBuffer_ A buffer of uint32_t pool IDs
* @param numberOfParameters_ The number of parameters / pool IDs
*/
PoolRawAccessHelper(uint32_t * poolIdBuffer_, uint8_t numberOfParameters_);
virtual ~PoolRawAccessHelper();
/**
* Serialize the datapool entries derived from the pool ID buffer
* directly into a provided buffer
* @param [out] buffer
* @param [out] size Size of the serialized buffer
* @param max_size
* @param bigEndian
* @return @c RETURN_OK On success
* @c RETURN_FAILED on failure
*/
ReturnValue_t serialize(uint8_t ** buffer, size_t * size,
const size_t max_size, bool bigEndian);
/**
* Serializes data pool entries into provided buffer with the validity mask buffer
* at the end of the buffer. Every bit of the validity mask denotes
* the validity of a corresponding data pool entry from left to right.
* @param [out] buffer
* @param [out] size Size of the serialized buffer plus size
* of the validity mask
* @return @c RETURN_OK On success
* @c RETURN_FAILED on failure
*/
ReturnValue_t serializeWithValidityMask(uint8_t ** buffer, size_t * size,
const size_t max_size, bool bigEndian);
private:
// DataSet * dataSet;
const uint8_t * poolIdBuffer;
uint8_t numberOfParameters;
uint8_t validBufferIndex;
uint8_t validBufferIndexBit;
struct SerializationArgs {
uint8_t ** buffer;
size_t * size;
const uint32_t max_size;
bool bigEndian;
};
/**
* Helper function to serialize single pool entries
* @param pPoolIdBuffer
* @param buffer
* @param remainingParameters
* @param hkDataSize
* @param max_size
* @param bigEndian
* @param withValidMask Can be set optionally to set a provided validity mask
* @param validityMask Can be supplied and will be set if @c withValidMask is set to true
* @return
*/
ReturnValue_t serializeCurrentPoolEntryIntoBuffer(SerializationArgs argStruct,
int32_t * remainingParameters, bool withValidMask = false, uint8_t * validityMask = NULL);
ReturnValue_t handlePoolEntrySerialization(uint32_t currentPoolId,SerializationArgs argStruct,
bool withValidMask = false, uint8_t * validityMask = NULL);
ReturnValue_t checkRemainingSize(PoolRawAccess * currentPoolRawAccess,
bool * isSerialized, uint8_t * arrayPosition);
void handleMaskModification(uint8_t * validityMask);
/**
* Sets specific bit of a byte
* @param byte
* @param position Position of byte to set from 1 to 8
* @param value Binary value to set
* @return
*/
uint8_t bitSetter(uint8_t byte, uint8_t position, bool value);
};
#endif /* FRAMEWORK_DATAPOOL_POOLRAWACCESSHELPER_H_ */