/*****************************************************************************
* FUNCTION: SendRAWDataFrame
*
* RETURNS: TRUE or FALSE
*
* PARAMS:
* UINT8* pBuf -> pointer to the command buffer.
* UINT16 bufLen -> length in bytes of the buffer (pBuf).
*
*
* NOTES: SendRAWDataFrame sends a Data Transmit request to the WF chip
* using the Random Access Window (RAW) interface. The pre-buffer
* is used by the WF MAC to send routing information for the packet
* while pBuf is the request that was submitted by the application.
* The order of operations are
* 1) reserve a memory buffer of sufficient length on the WF chip
* using RawMove.
* 2) Write the bytes for the pre-buffer and then the buffer
* using the RawSetByte. Because the bytes are written
* sequentially there is no need to call WFRawSetIndex
* to adjust the write position.
* 3) instruct the WF chip that the command is ready for
* processing.
* 4) perform any necessary cleanup.
*****************************************************************************/
void SendRAWDataFrame(UINT16 bufLen)
{
UINT8 txDataPreamble[4] = { WF_DATA_REQUEST_TYPE, WF_STD_DATA_MSG_SUBTYPE, 1, 0};
RawWrite(RAW_TX_ID, 0, sizeof(txDataPreamble), txDataPreamble);
RawSendTxBuffer(bufLen);
}
/*
*********************************************************************************************************
* WF_TxDataSendPacket()
*
* Description : Directs the MRF24WB0M to transmit a Tx data packet to the 802.11 network.
*
* Argument(s) : length - length, in bytes, of data packet
*
* Return(s) : Error code
*
* Caller(s) : Application
*
* Notes: : (1) MRF24WB0M Tx data block must first be allocated via WF_TxDataAllocateBuffer()
*
* (2) Current support only for full length Tx data messaages. In other words, startIndex
* must be 0, and length must be the total length of the Tx data packet.
*
*********************************************************************************************************
*/
void WF_TxDataSendPacket(uint16_t length)
{
tTxDataPreamble txPreamble;
/* fill in tx data preamble with correct header */
txPreamble.type = WF_DATA_REQUEST_TYPE;
txPreamble.subType = WF_STD_DATA_MSG_SUBTYPE;
txPreamble.h2 = 1;
txPreamble.h3 = 0;
/* Ensure the MRF24WB0M is awake (only applies if PS-Poll was enabled) */
EnsureWFisAwake();
/* write out preamble to MRF24WB0M buffer to the two extra bytes at start of allocated buffer */
RawSetIndex(RAW_TX_ID, 0);
WriteWFArray(RAW_1_DATA_REG, (uint8_t *)&txPreamble, WF_SIZE_OF_TX_DATA_PREAMBLE );
/* now tell MRF24WB0M to transmit the tx data packet */
RawSendTxBuffer(length);
}
