/**************************************************************************************************
* @fn macTxDoneCallback
*
* @brief -
*
* @param -
*
* @return none
**************************************************************************************************
*/
void macTxDoneCallback(uint8 status)
{
if (status == MAC_TXDONE_SUCCESS)
{
/* see if ACK was requested */
if (!txAckReq)
{
/* ACK was not requested, transmit is complete */
txComplete(MAC_SUCCESS);
}
else
{
/*
* ACK was requested - must wait to receive it. A timer is set
* to expire after the timeout duration for waiting for an ACK.
* If an ACK is received, the function macTxAckReceived() is called.
* If an ACK is not received within the timeout period,
* the function macTxAckTimeoutCallback() is called.
*/
macTxListenForAck = TRUE;
MAC_RADIO_TX_REQUEST_ACK_TIMEOUT_CALLBACK();
}
}
else if (status == MAC_TXDONE_CHANNEL_BUSY)
{
MAC_ASSERT((macTxType == MAC_TX_TYPE_SLOTTED_CSMA) || (macTxType == MAC_TX_TYPE_UNSLOTTED_CSMA));
/* clear channel assement failed, follow through with CSMA algorithm */
nb++;
if (nb > macPib.maxCsmaBackoffs)
{
txComplete(MAC_CHANNEL_ACCESS_FAILURE);
}
else
{
macTxBe = MIN(macTxBe+1, macPib.maxBe);
txCsmaPrep();
txCsmaGo();
}
}
else
{
MAC_ASSERT(status == MAC_TXDONE_INSUFFICIENT_TIME);
txComplete(MAC_NO_TIME);
}
}
/**************************************************************************************************
* @fn macTxDoneCallback
*
* @brief This callback is executed when transmit completes.
*
* @param none
*
* @return none
**************************************************************************************************
*/
MAC_INTERNAL_API void macTxDoneCallback(void)
{
halIntState_t s;
/*
* There is a small chance this function could be called twice for a single transmit.
* To prevent logic from executing twice, the state variable macTxActive is used as
* a gating mechanism to guarantee single time execution.
*/
HAL_ENTER_CRITICAL_SECTION(s);
if (macTxActive == MAC_TX_ACTIVE_GO)
{
if (macRxActive)
{
/* RX was partly done just before TX. Reset the RX state. */
macTxCollisionWithRxCallback();
}
/* see if ACK was requested */
if (!txAckReq)
{
macTxActive = MAC_TX_ACTIVE_DONE;
HAL_EXIT_CRITICAL_SECTION(s);
/* ACK was not requested, transmit is complete */
txComplete(MAC_SUCCESS);
}
else
{
/*
* ACK was requested - must wait to receive it. A timer is set
* to expire after the timeout duration for waiting for an ACK.
* If an ACK is received, the function macTxAckReceived() is called.
* If an ACK is not received within the timeout period,
* the function macTxAckNotReceivedCallback() is called.
*/
macTxActive = MAC_TX_ACTIVE_LISTEN_FOR_ACK;
MAC_RADIO_TX_REQUEST_ACK_TIMEOUT_CALLBACK();
HAL_EXIT_CRITICAL_SECTION(s);
}
}
else
{
HAL_EXIT_CRITICAL_SECTION(s);
}
}
