homedemocontroller.c

wireless jennic application note

/****************************************************************************
 *
 * NAME: vProcessKeys
 *
 * DESCRIPTION:
 * Gets the latest button presses and detects any change since the last time
 * the buttons were checked. If there is a change it is passed to the
 * individual handler for the screen currently being displayed (the buttons
 * are all 'soft' keys so their meaning changes from screen to screen).
 *
 * PARAMETERS:      Name            RW  Usage
 *                  pu8Keys         RW  Persistent value of buttons pressed
 *
 ****************************************************************************/
PRIVATE void vProcessKeys(uint8 *pu8Keys)
{
    uint8 u8KeysDown;
    uint8 u8NewKeysDown;

    u8KeysDown = *pu8Keys;

    /* Process key press */
    u8NewKeysDown = u8ButtonReadFfd();

    if (u8NewKeysDown != u8KeysDown)
    {
        u8KeysDown = u8NewKeysDown;

        /* Key presses depend on mode */
        switch (sDemoData.sSystem.eState)
        {
        case E_STATE_SPLASH:
            vProcessSplashKeyPress(u8KeysDown);
            break;

        case E_STATE_NETWORK:
            vProcessNetworkKeyPress(u8KeysDown);
            break;

        case E_STATE_NODE:
            vProcessNodeKeyPress(u8KeysDown);
            break;

        default:
            break;
        }
    }

    /* Store value for use next time */
    *pu8Keys = u8KeysDown;
}


/****************************************************************************
 *
 * NAME: u8UpdateTimeBlock
 *
 * DESCRIPTION:
 * Moves the state machine time block on by one time period.
 *
 * PARAMETERS:      Name            RW  Usage
 *                  u8TimeBlock     R   Previous time block
 *
 * RETURNS:
 * uint8 Next time block
 *
 ****************************************************************************/
PRIVATE uint8 u8UpdateTimeBlock(uint8 u8TimeBlock)
{
    u8TimeBlock++;
    if (u8TimeBlock >= MAX_BLOCKS)
    {
        u8TimeBlock = 0;
    }

    return u8TimeBlock;
}

/****************************************************************************
 *
 * NAME: vSendData
 *
 * DESCRIPTION:
 * Generates and sends a frame consisting of 1 KVP transaction, for the
 * setting of the LED at the receiving device. The address is provided in the
 * call but the endpoint is fixed.
 *
 * PARAMETERS: Name      RW  Usage
 *             u16Addr   R   Address to send data to
 *             u8Switch  R   Switch value (0 or 1)
 *
 ****************************************************************************/
PRIVATE void vSendData(uint16 u16Addr, uint8 u8Switch)
{
    uint8               u8SrcEP = 0x30;
    APS_Addrmode_e      eAddrMode;
    AF_Transaction_s    Transaction;
    uint16              u16DestAddr;
    uint8               u8DestEndpoint;
    uint8               transCount = 1;

    eAddrMode = APS_ADDRMODE_SHORT;
    u16DestAddr = u16Addr;
    u8DestEndpoint = 0x40;

    Transaction.u8SequenceNum = u8AfGetTransactionSequence(TRUE);
    Transaction.uFrame.sKvp.eCommandTypeID = KVP_SET;
    Transaction.uFrame.sKvp.eAttributeDataType = KVP_UNSIGNED_8BIT_INTEGER;
    Transaction.uFrame.sKvp.eErrorCode = KVP_SUCCESS;
    Transaction.uFrame.sKvp.u16AttributeID = 0x0000;
    Transaction.uFrame.sKvp.uAttributeData.UnsignedInt8 = u8Switch;

    afdeDataRequest(eAddrMode,
                    u16DestAddr,
                    u8DestEndpoint,
                    u8SrcEP,
                    DAP_PROFILE_ID,
                    DAP_CID_SWITCH,
                    AF_KVP,
                    transCount,
                    &Transaction,
                    APS_TXOPTION_NONE,
                    ENABLE_ROUTE_DISCOVERY,
                    0);
}

/****************************************************************************
 *
 * NAME: vProcessUpdateBlock
 *
 * DESCRIPTION:
 * Called once per second to update the scrolling graphs and, if showing a
 * screen with graphs on, updating the LCD.
 *
 * RETURNS:
 * void
 *
 ****************************************************************************/
PRIVATE void vProcessUpdateBlock(void)
{
    tsNodeData *psNodeData;
    tsNodeElementData *psNodeElementData;
    uint8 *pu8GraphData;
    uint8 u8PrevPoint;
    uint8 u8Node;
    uint8 u8Sensor;
    uint8 u8Value;

    /* Update graphs */
    for (u8Node = 0; u8Node < DEMO_ENDPOINTS; u8Node++)
    {
        psNodeData = &sDemoData.sNode.asNodeData[u8Node];
        if (psNodeData->u8FramesMissed)
        {
            /* Missed data, so copy previous value forward */
            u8PrevPoint = (sDemoData.sGui.u8GraphPos - 1) & (DEMO_HISTORY_LEN - 1);
            for (u8Sensor = 0; u8Sensor < DEMO_SENSOR_LIST_LEN; u8Sensor++)
            {
                pu8GraphData = psNodeData->asNodeElementData[u8Sensor].au8GraphData;
                pu8GraphData[sDemoData.sGui.u8GraphPos] = pu8GraphData[u8PrevPoint];
            }
        }
        else
        {
            /* Data must be scaled for graph (0-13)
               Temp range is 0-52
               Humidity range is 0-104
               Light range is 0-6
            */
            for (u8Sensor = 0; u8Sensor < DEMO_SENSOR_LIST_LEN; u8Sensor++)
            {
                psNodeElementData = &psNodeData->asNodeElementData[u8Sensor];
                u8Value = psNodeElementData->u8NowValue;
                switch (u8Sensor)
                {
                case E_SENSOR_TEMP:
                    u8Value = u8Value >> 2;
                    break;

                case E_SENSOR_HTS:
                    u8Value = u8Value >> 3;
                    break;

                case E_SENSOR_ALS:
                    u8Value = u8Value * 2;
                    break;
                }
                if (u8Value > 13)
                {
                    u8Value = 13;
                }
                psNodeElementData->au8GraphData[sDemoData.sGui.u8GraphPos] = u8Value;
            }
        }

        /* For next time, assume failed until proven otherwise */
        if (psNodeData->u8FramesMissed < FRAMES_MISSED_INDICATION)
        {
            psNodeData->u8FramesMissed++;
        }
    }

    /* Increment graph position */
    sDemoData.sGui.u8GraphPos = (sDemoData.sGui.u8GraphPos + 1) & (DEMO_HISTORY_LEN - 1);

    /* Update display */
    switch (sDemoData.sSystem.eState)
    {
    case E_STATE_NETWORK:
        vUpdateNetworkScreen(sDemoData.sGui.eCurrentSensor);
        break;

    case E_STATE_NODE:
        vUpdateNodeScreen(sDemoData.sGui.u8CurrentNode);
        break;

    default:
        break;
    }
}

/****************************************************************************
 *
 * NAME: vProcessSplashKeyPress
 *
 * DESCRIPTION:
 * Handles button presses on the splash screen. The buttons show the stack
 * version.
 *
 * PARAMETERS:      Name        RW  Usage
 *                  u8KeyMap    R   Current buttons pressed bitmap
 *
 * RETURNS:
 * void
 *
 ****************************************************************************/
PRIVATE void vProcessSplashKeyPress(uint8 u8KeyMap)
{
    char acString[9];

    switch (u8KeyMap)
    {
    case E_KEY_0:
        vUTIL_NumToString(sDemoData.sSystem.u32ZigbeeStackVersion, acString);
        vLcdWriteText("Stack release", 6, 0);
        vLcdWriteText(acString, 6, 80);
        vLcdRefreshAll();
        break;

    case E_KEY_1:
        /* Plus button: increment value */
        sDemoData.sSystem.u8Channel++;
        if (sDemoData.sSystem.u8Channel > CHANNEL_MAX)
        {
            sDemoData.sSystem.u8Channel = CHANNEL_MIN;
        }
        vUpdateSplashScreen();
        break;

    case E_KEY_2:
        /* Minus button: decrement value */
        sDemoData.sSystem.u8Channel--;
        if (sDemoData.sSystem.u8Channel < CHANNEL_MIN)
        {
            sDemoData.sSystem.u8Channel = CHANNEL_MAX;
        }
        vUpdateSplashScreen();
        break;

    case E_KEY_3:
        /* Done button: start network and go to network screen */
        sDemoData.sSystem.eState = E_STATE_NETWORK;
        JZS_sConfig.u32Channel = sDemoData.sSystem.u8Channel;
        JZS_vStartStack();
        vBuildNetworkScreen();
        break;

    default:
        break;
    }
}

/****************************************************************************
 *
 * NAME: vProcessNetworkKeyPress
 *
 * DESCRIPTION:
 * Handles button presses on the Network screen. The buttons can move onto
 * the first Node screen (if there are any nodes) or select a particular
 * sensor.
 *
 * PARAMETERS:      Name        RW  Usage
 *                  u8KeyMap    R   Current buttons pressed bitmap
 *
 * RETURNS:
 * void
 *
 ****************************************************************************/
uint8 u8PermitJoining = 0xff;

PRIVATE void vProcessNetworkKeyPress(uint8 u8KeyMap)
{
    switch (u8KeyMap)
    {
    case E_KEY_0:
        /* Node button: go to node screen (if there are any nodes) */
        if (sDemoData.sNode.u8AssociatedNodes > 0)
        {
            sDemoData.sSystem.eState = E_STATE_NODE;
            sDemoData.sGui.u8CurrentNode = 0;
            vBuildNodeScreen(sDemoData.sGui.u8CurrentNode);
        }
        break;

    case E_KEY_1:
        /* Temp button: change if not already there */
        sDemoData.sGui.eCurrentSensor = E_SENSOR_TEMP;
        u8PermitJoining = 0xff - u8PermitJoining;
        nlmePermitJoiningRequest(u8PermitJoining);
        vBuildNetworkScreen();
        break;

    case E_KEY_2:
        /* Humidity button: change if not already there */
        sDemoData.sGui.eCurrentSensor = E_SENSOR_HTS;
        vBuildNetworkScreen();
        break;

    case E_KEY_3:
        /* Temp button: change if not already there */
        sDemoData.sGui.eCurrentSensor = E_SENSOR_ALS;
        vBuildNetworkScreen();
        break;
    }
}

/****************************************************************************
 *
 * NAME: vProcessNodeKeyPress
 *
 * DESCRIPTION:
 * Handles button presses on the Node screens. The first button can move to
 * the next Node screen (if there are any more nodes) or back to the Network
 * screen. Another button selects the Node Control screen and the other two
 * toggle the state of the remote switch.
 *
 * PARAMETERS:      Name        RW  Usage
 *                  u8KeyMap    R   Current buttons pressed bitmap
 *
 * RETURNS:
 * void
 *
 ****************************************************************************/
PRIVATE void vProcessNodeKeyPress(uint8 u8KeyMap)
{
    switch (u8KeyMap)
    {
    case E_KEY_0:
        /* Node button: go to next node or network screen */
        sDemoData.sGui.u8CurrentNode++;
        if (sDemoData.sGui.u8CurrentNode == sDemoData.sNode.u8AssociatedNodes)
        {
            sDemoData.sSystem.eState = E_STATE_NETWORK;
            sDemoData.sGui.eCurrentSensor = E_SENSOR_ALS;
            vBuildNetworkScreen();
        }
        else
        {
            vBuildNodeScreen(sDemoData.sGui.u8CurrentNode);
        }
        break;

    case E_KEY_2:
        /* Off button */
    case E_KEY_3:
        /* On button */
        vSendData(sDemoData.sNode.asNodeData[sDemoData.sGui.u8CurrentNode].u16ShortAdr, (u8KeyMap == E_KEY_2) ? 0 : 1);
        break;
    }
}

/****************************************************************************
 *
 * NAME: vUpdateSplashScreen
 *
 * DESCRIPTION:
 * Updates the Splash screen, when it first appears or when the user
 * changes the channel number.
 *
 * RETURNS:
 * void
 *
 ****************************************************************************/
PRIVATE void vUpdateSplashScreen(void)
{
    char acString[5];

    vValToDec(acString, sDemoData.sSystem.u8Channel, "  ");
    vLcdWriteText(acString, 7, 16);

    vLcdRefreshAll();
}

/****************************************************************************
 *
 * NAME: vBuildNetworkScreen