/*****************************************************************************
* FUNCTION: SendMgmtMsg
*
* RETURNS: error code
*
* PARAMS: p_header -- pointer to mgmt message header data
* headerLength -- number of bytes in the header
* will be written
* p_data -- pointer to mgmt message data
* dataLength -- number of byte of data
*
* NOTES: Sends a management message
*****************************************************************************/
void SendMgmtMsg(UINT8 *p_header,
UINT8 headerLength,
UINT8 *p_data,
UINT8 dataLength)
{
#if defined(__18CXX)
static UINT32 startTickCount;
static UINT32 maxAllowedTicks;
#else
UINT32 startTickCount;
UINT32 maxAllowedTicks;
#endif
/* cannot send management messages while in WF_ProcessEvent() */
WF_ASSERT(!isInWFProcessEvent());
EnsureWFisAwake();
/* if a Rx Data packet is mounted that has not yet been processed */
if (GetRawWindowState(RAW_RX_ID) == WF_RAW_DATA_MOUNTED)
{
/* save it, so after mgmt response received it can be restored */
PushRawWindow(RAW_RX_ID);
RestoreRxData = TRUE;
}
/* mounts a tx mgmt buffer on the MRF24W when data tx is done */
maxAllowedTicks = TICKS_PER_SECOND / 200; /* 5 ms timeout */
startTickCount = (UINT32)TickGet();
while (!WFisTxMgmtReady() )
{
MACProcess();
/* DEBUG -- REMOVE AFTER FIGURE OUT WHY TIMING OUT (RARELY HAPPENS) */
if (TickGet() - startTickCount >= maxAllowedTicks)
{
/* force flags so WFisTxMgmtReady will return TRUE */
SetRawWindowState(RAW_TX_ID, WF_RAW_UNMOUNTED);
RawWindowReady[RAW_TX_ID] = FALSE;
}
}
/* write out management header */
RawSetByte(RAW_TX_ID, p_header, headerLength);
/* write out data (if any) */
if (dataLength > 0)
{
RawSetByte(RAW_TX_ID, p_data, dataLength);
}
/* send mgmt msg to MRF24W */
SendRAWManagementFrame(headerLength + dataLength);
}
/*******************************************************************************
Function:
void SendMgmtMsg(UINT8 *p_header, UINT8 headerLength, UINT8 *p_data, UINT8 dataLength)
Summary:
Sends a management message to MRF24W.
Description:
Allocates management buffer on MRF24W. Then sends the management message
(header + data) to MRF24W.
Precondition:
MACInit must be called.
Parameters:
p_header -- pointer to mgmt message header data
headerLength -- number of bytes in the header will be written
p_data -- pointer to mgmt message data
dataLength -- number of bytes of data
Returns:
None
Remarks:
*****************************************************************************/
void SendMgmtMsg(UINT8 *p_header,
UINT8 headerLength,
UINT8 *p_data,
UINT8 dataLength)
{
UINT32 timeoutPeriod;
UINT32 startTickCount;
/* cannot send management messages while in WF_ProcessEvent() */
WF_ASSERT(!isInWFProcessEvent());
EnsureWFisAwake();
/* Allocate a management buffer on the WiFi device. May have to wait a bit while the previous Data Tx packet is being sent */
/* which will free up the memory for this mgmt packet. */
timeoutPeriod = TICKS_PER_SECOND / 2; /* 500 ms */
startTickCount = (UINT32)TickGet();
while (AllocateMgmtTxBuffer(WF_MAX_TX_MGMT_MSG_SIZE) == FALSE)
{
if (TickGet() - startTickCount >= timeoutPeriod)
{
WF_ASSERT(FALSE);
}
}
/* write out management header */
RawSetByte(RAW_MGMT_TX_ID, p_header, headerLength);
/* write out data (if any) */
if (dataLength > 0)
{
RawSetByte(RAW_MGMT_TX_ID, p_data, dataLength);
}
/* send mgmt msg to MRF24W */
SendRAWManagementFrame(headerLength + dataLength);
}
