I found this in nRF5_SDK_17.0.2_d674dde/components/libraries/memobj/nrf_memobj.h :
/** * A memory object can consist of multiple chunks with the same size. Each object has a header part * and a data part. The first element in a memory object is memory object head which has a special header. * The remaining objects have a header of the same size. * @verbatim _____________________ _____________________ _____________________| | | | | ||4 B head header | --> |4 B p_next |------->|4 B p_memobj_pool ||_____________________| | |_____________________| |_____________________|| | | | | | ||4 B p_next |--| | | | ||_____________________| | | .... | || | | data | | data || | | | | || data | | | | || | | | | ||_____________________| |_____________________| |_____________________| head mid_element last_element@endverbatim * */
However, I think that there is a mistake, the head block starts with p_next, and then head header, and not the other way round.
This can be inferred from this definition :
/** @brief Head chunk structure. */
typedef struct
{
memobj_header_t header; ///< Standard header.
memobj_head_header_t head_header; ///< Head-specific header part.
uint8_t data[1]; ///< Data.
} memobj_head_t;
where the usual head is in the first place.
