CMSIS_5/CMSIS/RTOS2/RTX/Template/MemPool.c

#include "cmsis_os2.h"                                           // CMSIS RTOS header file

/*----------------------------------------------------------------------------
 *      Memory Pool creation & usage
 *---------------------------------------------------------------------------*/

#define MEMPOOL_OBJECTS      16                                 // number of Memory Pool Objects

typedef struct {                                                // object data type
  uint8_t Buf[32];
  uint8_t Idx;
} MEM_BLOCK_t;

void Thread_MemPool (void *argument);                     // thread function
osThreadId_t tid_Thread_MemPool;                                  // thread id

osMemoryPoolId_t mpid_MemPool;                                          // memory pool id

int Init_MemPool (void)
{

  mpid_MemPool = osMemoryPoolNew(MEMPOOL_OBJECTS,sizeof(MEM_BLOCK_t), NULL);
  if (mpid_MemPool == NULL) {
    ; // MemPool object not created, handle failure
  }

  tid_Thread_MemPool = osThreadNew (Thread_MemPool,NULL , NULL);
  if (tid_Thread_MemPool == NULL) {
    return(-1);
  }

  return(0);
}

void Thread_MemPool (void *argument)
{
  osStatus_t     status;
  MEM_BLOCK_t *pMem = 0;

  while (1) {
    ; // Insert thread code here...

    pMem = (MEM_BLOCK_t *)osMemoryPoolAlloc (mpid_MemPool, NULL);          // get Mem Block
    if (pMem) {                                                 // Mem Block was available
      pMem->Buf[0] = 0x55;                                      // do some work...
      pMem->Idx    = 0;

      status = osMemoryPoolFree (mpid_MemPool, pMem);                 // free mem block
      switch (status)  {
      case osOK:
        break;
      case osErrorParameter:
        break;
      case osErrorNoMemory:
        break;
      default:
        break;
      }
    }

    osThreadYield ();                                           // suspend thread
  }
}