wuart_e.c

Zigbee无线网络节点的串口例程

 * NAME: vProcessIncomingData
 *
 * DESCRIPTION:
 * Process incoming data events from the stack.
 *
 * PARAMETERS:      Name            RW  Usage
 *                  psMcpsInd
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vProcessIncomingData(MAC_McpsDcfmInd_s *psMcpsInd)
{
    MAC_RxFrameData_s *psFrame;
    MAC_Addr_s *psAddr;
    uint16 u16NodeAddr;
    uint8 i;

    psFrame = &psMcpsInd->uParam.sIndData.sFrame;
    psAddr = &psFrame->sSrcAddr;

    /* Check that this is a data frame */
    if (psMcpsInd->u8Type == MAC_MCPS_IND_DATA)
    {
        /* Check that data is from UART node */
        u16NodeAddr = psAddr->uAddr.u16Short;

        if (u16NodeAddr == COORD_ADDR)
        {
            if (psFrame->au8Sdu[0] == u8RxFrameHandle)
            {
                u8RxFrameHandle++;

                /* Copy frame data to serial buffer for output on UART */
                for (i = 1; i < psFrame->u8SduLength; i++)
                {
                    vSerial_TxChar(psFrame->au8Sdu[i]);
                }
            }
            /* Must have missed a frame */
            else if (psFrame->au8Sdu[0] > u8RxFrameHandle)
            {
                u8RxFrameHandle = psFrame->au8Sdu[0] + 1;

                /* Copy frame data to serial buffer for output on UART */
                for (i = 1; i < psFrame->u8SduLength; i++)
                {
                    vSerial_TxChar(psFrame->au8Sdu[i]);
                }
            }
            /* Must be the same frame as last time */
            else if (psFrame->au8Sdu[0] < u8RxFrameHandle)
            {
                /* Dont do anything as we already have the data */
            }
        }
    }
}

/****************************************************************************
 *
 * NAME: vProcessIncomingHwEvent
 *
 * DESCRIPTION:
 * Process any hardware events.
 *
 * PARAMETERS:      Name            RW  Usage
 *                  psAHI_Ind
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vProcessIncomingHwEvent(AppQApiHwInd_s *psAHI_Ind)
{
}

/****************************************************************************
 *
 * NAME: vTickTimerISR
 *
 * DESCRIPTION:
 *
 *
 * PARAMETERS:      Name            RW  Usage
 * None.
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vTickTimerISR(uint32 u32Device, uint32 u32ItemBitmap)
{
    static uint8 u8ToggleCount;

    /* Flash LED 1 to show we are alive */
    if (u8ToggleCount++ & 0x40)
    {
        vLedControl(0,1);
    }
    else
    {
        vLedControl(0,0);
    }

    /* Do this every 10ms to tx data received on hardware UART */
    if (sDeviceData.sSystem.eState == E_STATE_RUNNING)
    {
        vWUART_TxData();
    }
}

/****************************************************************************
 *
 * NAME: vStartActiveScan
 *
 * DESCRIPTION:
 * Start a scan to search for a network to join.
 *
 * PARAMETERS:      Name            RW  Usage
 * None.
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vStartActiveScan(void)
{
    MAC_MlmeReqRsp_s  sMlmeReqRsp;
    MAC_MlmeSyncCfm_s sMlmeSyncCfm;

    sDeviceData.sSystem.eState = E_STATE_SCANNING;

    /* Request scan */
    sMlmeReqRsp.u8Type = MAC_MLME_REQ_SCAN;
    sMlmeReqRsp.u8ParamLength = sizeof(MAC_MlmeReqScan_s);
    sMlmeReqRsp.uParam.sReqScan.u8ScanType = MAC_MLME_SCAN_TYPE_ACTIVE;
    sMlmeReqRsp.uParam.sReqScan.u32ScanChannels = SCAN_CHANNELS;
    sMlmeReqRsp.uParam.sReqScan.u8ScanDuration = ACTIVE_SCAN_DURATION;

    vAppApiMlmeRequest(&sMlmeReqRsp, &sMlmeSyncCfm);
}

/****************************************************************************
 *
 * NAME: vHandleActiveScanResponse
 *
 * DESCRIPTION:
 * Handle the reponse generated by the stack as a result of the network scan.
 *
 * PARAMETERS:      Name            RW  Usage
 *                  psMlmeInd
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vHandleActiveScanResponse(MAC_MlmeDcfmInd_s *psMlmeInd)
{
    MAC_PanDescr_s *psPanDesc;
    int i;

    /* Make sure it is what we're after */
    if ((psMlmeInd->uParam.sDcfmScan.u8Status == MAC_ENUM_SUCCESS)
        && (psMlmeInd->uParam.sDcfmScan.u8ScanType == MAC_MLME_SCAN_TYPE_ACTIVE))
    {
        /* Determine which, if any, network contains demo coordinator.
           Algorithm for determining which network to connect to is
           beyond the scope of 802.15.4, and we use a simple approach
           of matching the required PAN ID and short address, both of
           which we already know */

        i = 0;
        while (i < psMlmeInd->uParam.sDcfmScan.u8ResultListSize)
        {
            psPanDesc = &psMlmeInd->uParam.sDcfmScan.uList.asPanDescr[i];

            if ((psPanDesc->sCoord.u16PanId == PAN_ID)
             && (psPanDesc->sCoord.u8AddrMode == 2)
             && (psPanDesc->sCoord.uAddr.u16Short == COORD_ADDR))
            {
                /* Matched so start to synchronise and associate */
                sDeviceData.sSystem.u8Channel = psPanDesc->u8LogicalChan;
                vStartAssociate();
                return;
            }
            i++;
        }
    }
    /* Failed to find coordinator: keep trying */
    vStartActiveScan();
}

/****************************************************************************
 *
 * NAME: vStartAssociate
 *
 * DESCRIPTION:
 * Start the association process with the network coordinator.
 *
 * PARAMETERS:      Name            RW  Usage
 * None.
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * Assumes that a network has been found during the network scan.
 ****************************************************************************/
PRIVATE void vStartAssociate(void)
{
    MAC_MlmeReqRsp_s  sMlmeReqRsp;
    MAC_MlmeSyncCfm_s sMlmeSyncCfm;

    sDeviceData.sSystem.eState = E_STATE_ASSOCIATING;

    /* Create associate request. We know short address and PAN ID of
       coordinator as this is preset and we have checked that received
       beacon matched this */
    sMlmeReqRsp.u8Type = MAC_MLME_REQ_ASSOCIATE;
    sMlmeReqRsp.u8ParamLength = sizeof(MAC_MlmeReqAssociate_s);
    sMlmeReqRsp.uParam.sReqAssociate.u8LogicalChan = sDeviceData.sSystem.u8Channel;
    sMlmeReqRsp.uParam.sReqAssociate.u8Capability = 0x80; /* We want short address, other features off */
    sMlmeReqRsp.uParam.sReqAssociate.u8SecurityEnable = FALSE;
    sMlmeReqRsp.uParam.sReqAssociate.sCoord.u8AddrMode = 2;
    sMlmeReqRsp.uParam.sReqAssociate.sCoord.u16PanId = PAN_ID;
    sMlmeReqRsp.uParam.sReqAssociate.sCoord.uAddr.u16Short = COORD_ADDR;

    vAppApiMlmeRequest(&sMlmeReqRsp, &sMlmeSyncCfm);
}

/****************************************************************************
 *
 * NAME: vHandleAssociateResponse
 *
 * DESCRIPTION:
 * Handle the response generated by the stack as a result of the associate
 * start request.
 *
 * PARAMETERS:      Name            RW  Usage
 *                  psMlmeInd
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vHandleAssociateResponse(MAC_MlmeDcfmInd_s *psMlmeInd)
{
    /* If successfully associated with network coordinator */
    if (psMlmeInd->uParam.sDcfmAssociate.u8Status == MAC_ENUM_SUCCESS)
    {
        /* Store short address that we have been assigned */
        sDeviceData.sSystem.u16ShortAddr = psMlmeInd->uParam.sDcfmAssociate.u16AssocShortAddr;
        /* We are now in the running state */
        sDeviceData.sSystem.eState = E_STATE_RUNNING;

        /* Turn on LED 2 to show we have assocaited */
        vLedControl(1,1);
    }
    else
    {
        /* Try, try again */
    	vStartActiveScan();
    }
}

/****************************************************************************
 *
 * NAME: vTxUARTData
 *
 * DESCRIPTION:
 *
 * PARAMETERS:      Name            RW  Usage
 * None.
 *
 * RETURNS:
 * None.
 *
 * NOTES:
 * None.
 ****************************************************************************/
PRIVATE void vWUART_TxData(void)
{
    MAC_McpsReqRsp_s  sMcpsReqRsp;
    MAC_McpsSyncCfm_s sMcpsSyncCfm;
    uint8 *pu8Payload, i = 0;
    int16 i16RxChar;

    i16RxChar = i16Serial_RxChar();

    if (i16RxChar >= 0)
    {
        /* Create frame transmission request */
        sMcpsReqRsp.u8Type = MAC_MCPS_REQ_DATA;
        sMcpsReqRsp.u8ParamLength = sizeof(MAC_McpsReqData_s);
        /* Set handle so we can match confirmation to request */
        sMcpsReqRsp.uParam.sReqData.u8Handle = 1;
        /* Use short address for source */
        sMcpsReqRsp.uParam.sReqData.sFrame.sSrcAddr.u8AddrMode = 2;
        sMcpsReqRsp.uParam.sReqData.sFrame.sSrcAddr.u16PanId = PAN_ID;
        sMcpsReqRsp.uParam.sReqData.sFrame.sSrcAddr.uAddr.u16Short = sDeviceData.sSystem.u16ShortAddr;
        /* Use short address for destination */
        sMcpsReqRsp.uParam.sReqData.sFrame.sDstAddr.u8AddrMode = 2;
        sMcpsReqRsp.uParam.sReqData.sFrame.sDstAddr.u16PanId = PAN_ID;
        sMcpsReqRsp.uParam.sReqData.sFrame.sDstAddr.uAddr.u16Short = COORD_ADDR;
        /* Frame requires ack but not security, indirect transmit or GTS */
        sMcpsReqRsp.uParam.sReqData.sFrame.u8TxOptions = MAC_TX_OPTION_ACK;

        pu8Payload = sMcpsReqRsp.uParam.sReqData.sFrame.au8Sdu;
        pu8Payload[i++] = u8TxFrameHandle++;
        pu8Payload[i++] = (uint8)i16RxChar;

        while ((i16RxChar >= 0) && (i < MAX_DATA_PER_FRAME))
        {
            i16RxChar = i16Serial_RxChar();

            if (i16RxChar >= 0)
            {
            	/* Set payload data */
	            pu8Payload[i++] = (uint8)i16RxChar;
	        }
        }

        /* Set frame length */
        sMcpsReqRsp.uParam.sReqData.sFrame.u8SduLength = i;

        /* Request transmit */
        vAppApiMcpsRequest(&sMcpsReqRsp, &sMcpsSyncCfm);
    }
}

/****************************************************************************/
/***        END OF FILE                                                   ***/
/****************************************************************************/