nwk_tx_pool.c

ucos在NEC平台下的移植

#include<swsZigbeeNWK_headers.h>


//-------------------------------------------------------------------------------------------------------
// The TX packet pool
extern NWK_TX_INFO nwkTxInfo;
NWK_TX_PACKET pNwkTxPacketPool[NWK_OPT_TX_QUEUE_SIZE];



//-------------------------------------------------------------------------------------------------------



//-------------------------------------------------------------------------------------------------------
//  void nwkTxPoolInit(void)
//
//  DESCRIPTION:
//      Initializes the TX packet pool and the indirect packet queue
//-------------------------------------------------------------------------------------------------------
void nwkTxPoolInit(void) {
    UINT8 n ;
    for (n=0; n < NWK_OPT_TX_POOL_SIZE; n++) {
        pNwkTxPacketPool[n].occupied = FALSE;
        pNwkTxPacketPool[n].poolIndex = n;
    }
} // mtxpInit




//-------------------------------------------------------------------------------------------------------
//  NWK_TX_PACKET* nwkTxPoolReservePacket(void)
//
//  DESCRIPTION:
//      Reserves a packet in the packet pool
//
//  RETURN VALUE:
//      MAC_TX_PACKET*
//          A pointer to the reserved packet, or NULL if the pool is empty
//-------------------------------------------------------------------------------------------------------
NWK_TX_PACKET* nwkTxPoolReservePacket(void)
{
    NWK_TX_PACKET *pPacket;
    UINT8 n;
    for (n = 0; n < NWK_OPT_TX_POOL_SIZE; n++) {
        pPacket = &pNwkTxPacketPool[n];
        if (!pPacket->occupied) {
//            DISABLE_GLOBAL_INT();
            if (!pPacket->occupied) {
                pPacket->occupied = TRUE;
  //              ENABLE_GLOBAL_INT();
                return pPacket;
            }
    //        ENABLE_GLOBAL_INT();
        }
    }
    return NULL;
} // mtxpReservePacket




//-------------------------------------------------------------------------------------------------------
//  void ntxpReleasePacket(NWK_TX_PACKET* pPacket)
//
//  DESCRIPTION:
//      Releases a packet back to the TX packet pool
//
//  ARGUMENTS:
//      NWK_TX_PACKET* pPacket
//          A pointer to the packet to be released
//-------------------------------------------------------------------------------------------------------

void nwkTxPoolReleasePacket(NWK_TX_PACKET* pPacket) {
    if (nwkTxInfo.nPacket == pPacket) 
    nwkTxInfo.nPacket = NULL;
	
    pPacket->occupied = FALSE;
} // mtxpReleasePacket