چکیده (انگلیسی):

Memory fragmentation is the development of a large number of separate free areas. Memory management
in embedded systems demand effective implementation schemes to avoid fragmentation problem. Existing
dynamic memory allocation methods fail to suit real time system requirements. Execution times need to be
deterministic and this motivates the need for allocation and deallocation to be done in constant time
with the help of API’s. In μC/OS-II, memory allocation is semi-dynamic and a buddy allocator
dynamic memory allocation algorithm is commonly used. Programmer must statically allocate a
memory and partition the region using μC/OS-II Kernel API. Tasks can only request pre-partitioned
fixed-size memory space from μC/OS-II. Memory allocation times are influenced by the ratio of
memory allocation to the stack size of the task. In this research work memory management in LPC
1768 environment using RTOS μC/OS-II is proposed. Effective sharing of memory blocks among
tasks co exists with partition. The captured results shows that the memory allocation and deallocation
suits real time. The implication of the work is that, the necessity to reserve a static set of locations
ahead of time is eliminated so that memory can be allocated at compile or design time.