//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus(true, "Monitoring...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Initialize the SimpliciTI stack but don't set any receive callback.
    //
    SMPL_Init(0);

    //
    // Start monitoring for alert messages from other devices.  This function
    // doesn't return.
    //
    MonitorForBadNews();
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bSuccess, bRetcode;
    unsigned char pucMsg[2];
    unsigned char ucTid;
    unsigned char ucDelay;
    unsigned long ulLastRxCount, ulLastTxCount;
    smplStatus_t eRetcode;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus(true, "Please choose the operating mode.");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();
    if(!bRetcode)
    {
        //
        // The board does not have a MAC address configured so we can't set
        // the SimpliciTI device address (which we derive from the MAC address).
        //
        while(1);
    }

    //
    // Initialize the SimpliciTI stack and supply our receive callback
    // function pointer.
    //
    SMPL_Init(RxCallback);

    //
    // Initialize our message ID, initial inter-message delay and packet
    // counters.
    //
    ucTid = 0;
    ucDelay = 0;
    ulLastRxCount = 0;
    ulLastTxCount = 0;

    //
    // Fall into the command line processing loop.
    //
    while (1)
    {
        //
        // Process any messages from or for the widgets.
        //
        WidgetMessageQueueProcess();

        //
        // Check to see if we've been told to do anything.
        //
        if(g_ulCommandFlags)
        {
            //
            // Has the mode been set?  If so, set up the display to show the
            // "LEDs" and then start communication.
            //
            if(HWREGBITW(&g_ulCommandFlags, COMMAND_MODE_SET))
            {
                //
                // Clear the bit now that we have seen it.
                //
                HWREGBITW(&g_ulCommandFlags, COMMAND_MODE_SET) = 0;

                //
                // Remove the buttons and replace them with the LEDs then
                // repaint the display.
                //
                WidgetRemove((tWidget *)&g_sBtnContainer);
                WidgetAdd((tWidget *)&g_sBackground,
                          (tWidget *)&g_sLEDContainer);
                WidgetPaint((tWidget *)&g_sBackground);

                //
                // Now call the function that initiates communication in
                // the desired mode.  Note that these functions will not return
                // until communication is established or an error occurs.
                //
                if(g_ulMode == MODE_TALKER)
                {
                    bSuccess = LinkTo();
                }
                else
                {
                    bSuccess = LinkFrom();
                }

                //
                // If we were unsuccessfull, go back to the mode selection
                // display.
                //
                if(!bSuccess)
                {
                    //
                    // Remove the LEDs and show the buttons again.
                    //
                    WidgetRemove((tWidget *)&g_sLEDContainer);
                    WidgetAdd((tWidget *)&g_sBackground,
                              (tWidget *)&g_sBtnContainer);
                    WidgetPaint((tWidget *)&g_sBackground);

                    //
                    // Tell the user what happened.
                    //
                    UpdateStatus(false, "Error establishing communication!");
                    UpdateStatus(true, "Please choose the operating mode.");

                    //
                    // Remember that we don't have an operating mode chosen.
                    //
                    g_ulMode = MODE_UNDEFINED;
                }
            }

            //
            // Have we been asked to toggle the first "LED"?
            //
            if(HWREGBITW(&g_ulCommandFlags, COMMAND_LED1_TOGGLE))
            {
                //
                // Clear the bit now that we have seen it.
                //
                HWREGBITW(&g_ulCommandFlags, COMMAND_LED1_TOGGLE) = 0;

                //
                // Toggle the LED.
                //
                ToggleLED(1);
            }

            //
            // Have we been asked to toggle the second "LED"?
            //
            if(HWREGBITW(&g_ulCommandFlags, COMMAND_LED2_TOGGLE))
            {
                //
                // Clear the bit now that we have seen it.
                //
                HWREGBITW(&g_ulCommandFlags, COMMAND_LED2_TOGGLE) = 0;

                //
                // Toggle the LED.
                //
                ToggleLED(2);
            }

            //
            // Have we been asked to send a packet back to our peer?  This
            // command is only ever sent to the main loop when we are running
            // in listener mode (LinkListen).
            //
            if(HWREGBITW(&g_ulCommandFlags, COMMAND_SEND_REPLY))
            {
                //
                // Clear the bit now that we have seen it.
                //
                HWREGBITW(&g_ulCommandFlags, COMMAND_SEND_REPLY) = 0;

                //
                // Create the message.  The first byte tells the receiver to
                // toggle LED1 and the second is a sequence counter.
                //
                pucMsg[0] = 1;
                pucMsg[1] = ++ucTid;
                eRetcode = SMPL_Send(sLinkID, pucMsg, 2);

                //
                // Update our transmit counter if we transmitted the packet
                // successfully.
                //
                if(eRetcode == SMPL_SUCCESS)
                {
                    g_ulTxCount++;
                }
                else
                {
                    UpdateStatus(false, "TX error %s (%d)", MapSMPLStatus(eRetcode),
                                 eRetcode);
                }
            }
        }

        //
        // If we are the talker (LinkTo mode), check to see if it's time to
        // send another packet to our peer.
        //
        if((g_ulMode == MODE_TALKER) &&
           (g_ulSysTickCount >= g_ulNextPacketTick))
        {
            //
            // Create the message.  The first byte tells the receiver to
            // toggle LED1 and the second is a sequence counter.
            //
            pucMsg[0] = 1;
            pucMsg[1] = ++ucTid;
            eRetcode = SMPL_Send(sLinkID, pucMsg, 2);

            //
            // Update our transmit counter if we transmitted the packet
            // correctly.
            //
            if(eRetcode == SMPL_SUCCESS)
            {
                g_ulTxCount++;
            }
            else
            {
                UpdateStatus(false, "TX error %s (%d)", MapSMPLStatus(eRetcode),
                             eRetcode);
            }

            //
            // Set the delay before the next message.
            //
#ifndef USE_2_SECOND_DELAY
            //
            // Set the delay before the next message.  We increase this from 1
            // second to 4 seconds then cycle back to 1.
            //
            ucDelay = (ucDelay == 4) ? 1 : (ucDelay + 1);
#else
            //
            // Wait 2 seconds before sending the next message.
            //
            ucDelay = 2;
#endif

            //
            // Calculate the system tick count when our delay has completed.
            // This algorithm will generate a spurious packet every 13.7 years
            // since I don't handle the rollover case in the comparison above
            // but I'm pretty sure you will forgive me for this oversight.
            //
            g_ulNextPacketTick = g_ulSysTickCount +
                                 (TICKS_PER_SECOND * ucDelay);
        }

        //
        // If either the transmit or receive packet count changed, update
        // the status on the display.
        //
        if((g_ulRxCount != ulLastRxCount) || (g_ulTxCount != ulLastTxCount))
        {
            ulLastTxCount = g_ulTxCount;
            ulLastRxCount = g_ulRxCount;
            UpdateStatus(false, "Received %d pkts, sent %d (%d)",
                         ulLastRxCount, ulLastTxCount);
        }
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;
    smplStatus_t eRetcode;
    ioctlScanChan_t sScan;
    freqEntry_t pFreq[NWK_FREQ_TBL_SIZE];
    tBoolean bFirstTimeThrough;
    unsigned long ulLoop;
    uint8_t ucLast;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus("Initializing...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Turn on both our LEDs
    //
    SetLED(1, true);
    SetLED(2, true);

    UpdateStatus("Joining network...");

    //
    // Initialize the SimpliciTI stack but don't set any receive callback.
    //
    while(1)
    {
        eRetcode = SMPL_Init((uint8_t (*)(linkID_t))0);

        if(eRetcode == SMPL_SUCCESS)
        {
            break;
        }

        ToggleLED(1);
        ToggleLED(2);
        SPIN_ABOUT_A_SECOND;
    }

    //
    // Tell the user what's up.
    //
    UpdateStatus("Sniffing...");

    //
    // Set up for our first sniff.
    //
    sScan.freq = pFreq;
    bFirstTimeThrough = true;
    ucLast = 0xFF;

    //
    // Keep sniffing forever.
    //
    while (1)
    {
        //
        // Wait a while.
        //
        SPIN_ABOUT_A_QUARTER_SECOND;

        //
        // Scan for the active channel.
        //
        SMPL_Ioctl(IOCTL_OBJ_FREQ, IOCTL_ACT_SCAN, &sScan);

        //
        // Did we find a signal?
        //
        if (1 == sScan.numChan)
        {
            if (bFirstTimeThrough)
            {
                //
                // Set the initial LED state.
                //
                SetLED(1, false);
                SetLED(2, true);

                //
                // Wait a while.
                //
                for(ulLoop = 0; ulLoop < 15; ulLoop--)
                {
                    //
                    // Toggle both LEDs and wait a bit.
                    //
                    ToggleLED(1);
                    ToggleLED(2);
                    SPIN_ABOUT_A_QUARTER_SECOND;
                }
                bFirstTimeThrough = false;
            }

            //
            // Has the channel changed since the last time we updated the
            // display?
            //
            if(pFreq[0].logicalChan != ucLast)
            {
                //
                // Remember the channel we just detected.
                //
                ucLast = pFreq[0].logicalChan;

                //
                // Tell the user which channel we found to be active.
                //
                UpdateStatus("Active channel is %d.", pFreq[0].logicalChan);

                //
                // Set the "LEDs" to mimic the behavior of the MSP430 versions
                // of this application.
                //
                switch(pFreq[0].logicalChan)
                {
                    case 0:
                    {
                        /* GREEN OFF */
                        /* RED   OFF */
                        SetLED(1, false);
                        SetLED(2, false);
                        break;
                    }

                    case 1:
                    {
                        /* GREEN OFF */
                        /* RED   ON */
                        SetLED(1, false);
                        SetLED(2, true);
                        break;
                    }

                    case 2:
                    {
                        /* GREEN ON */
                        /* RED   OFF */
                        SetLED(1, true);
                        SetLED(2, false);
                        break;
                    }

                    case 3:
                    {
                        /* GREEN ON */
                        /* RED   ON */
                        SetLED(1, true);
                        SetLED(2, true);
                        break;
                    }

                    case 4:
                    {
                        /* blink them both... */
                        SetLED(1, false);
                        SetLED(2, false);
                        SPIN_ABOUT_A_QUARTER_SECOND;
                        SetLED(1, true);
                        SetLED(2, true);
                        SPIN_ABOUT_A_QUARTER_SECOND;
                        SetLED(1, false);
                        SetLED(2, false);
                    }
                }
            }
        }
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;
    bspIState_t intState;
    uint8_t ucLastChannel;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus(true, "Initializing...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Turn on both our LEDs
    //
    SetLED(1, true);
    SetLED(2, true);

    UpdateStatus(true, "Waiting for a device...");

    //
    // Initialize the SimpliciTI stack and register our receive callback.
    //
    SMPL_Init(ReceiveCallback);

    //
    // Tell the user what's up.
    //
    UpdateStatus(true, "Access point active.");

    //
    // Do nothing after this - the SimpliciTI stack code handles all the
    // access point function required.
    //
    while(1)
    {
        //
        // Wait for the Join semaphore to be set by the receipt of a Join
        // frame from a device that supports an end device.
        //
        // An external method could be used as well. A button press could be
        // connected to an ISR and the ISR could set a semaphore that is
        // checked by a function call here, or a command shell running in
        // support of a serial connection could set a semaphore that is
        // checked by a function call.
        //
        if (g_ucJoinSem && (g_ucNumCurrentPeers < NUM_CONNECTIONS))
        {
            //
            // Listen for a new incoming connection.
            //
            while (1)
            {
                if (SMPL_SUCCESS == SMPL_LinkListen(&g_sLID[g_ucNumCurrentPeers]))
                {
                    //
                    // The connection attempt succeeded so break out of the
                    // loop.
                    //
                    break;
                }

                //
                // Process our widget message queue.
                //
                WidgetMessageQueueProcess();

                //
                // A "real" application would implement its fail-to-link
                // policy here.  We go back and listen again.
                //
            }

            //
            // Increment our peer counter.
            //
            g_ucNumCurrentPeers++;

            //
            // Decrement the join semaphore.
            //
            BSP_ENTER_CRITICAL_SECTION(intState);
            g_ucJoinSem--;
            BSP_EXIT_CRITICAL_SECTION(intState);

            //
            // Tell the user how many devices we are now connected to.
            //
            UpdateStatus(false, "%d devices connected.", g_ucNumCurrentPeers);
        }

        //
        // Have we received a frame on one of the ED connections? We don't use
        // a critical section here since it doesn't really matter much if we
        // miss a poll.
        //
        if (g_ucPeerFrameSem)
        {
            uint8_t     pucMsg[MAX_APP_PAYLOAD], ucLen, ucLoop;

            /* process all frames waiting */
            for (ucLoop = 0; ucLoop < g_ucNumCurrentPeers; ucLoop++)
            {
                //
                // Receive the message.
                //
                if (SMPL_SUCCESS == SMPL_Receive(g_sLID[ucLoop], pucMsg,
                                                 &ucLen))
                {
                    //
                    // ...and pass it to the function that processes it.
                    //
                    ProcessMessage(g_sLID[ucLoop], pucMsg, ucLen);

                    //
                    // Decrement our frame semaphore.
                    //
                    BSP_ENTER_CRITICAL_SECTION(intState);
                    g_ucPeerFrameSem--;
                    BSP_EXIT_CRITICAL_SECTION(intState);
                }
            }
        }

        //
        // Have we been asked to change channel?
        //
        ucLastChannel = g_ucChannel;
        if (g_bChangeChannel)
        {
            //
            // Yes - go ahead and change to the next radio channel.
            //
            g_bChangeChannel = false;
            ChangeChannel();
        }
        else
        {
            //
            // No - check to see if we need to automatically change channel
            // due to interference on the current one.
            //
            CheckChangeChannel();
        }

        //
        // If the channel changed, update the display.
        //
        if(g_ucChannel != ucLastChannel)
        {
            UpdateStatus(false, "Changed to channel %d.", g_ucChannel);
        }

        //
        // If required, blink the "LEDs" to indicate we are waiting for a
        // message following a channel change.
        //
        BSP_ENTER_CRITICAL_SECTION(intState);
        if (g_ulBlinky)
        {
            if (++g_ulBlinky >= 0xF)
            {
                g_ulBlinky = 1;
                ToggleLED(1);
                ToggleLED(2);
            }
        }
        BSP_EXIT_CRITICAL_SECTION(intState);

        //
        // Process our widget message queue.
        //
        WidgetMessageQueueProcess();
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bSuccess, bRetcode, bInitialized;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    MAP_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();
    if(!bRetcode)
    {
        //
        // The Ethernet MAC address can't have been set so hang here since we
        // don't have an address to use for SimpliciTI.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // First time through, we need to initialize the SimpliciTI stack.
    //
    bInitialized = false;

    //
    // The main loop starts here now that we have joined the network.
    //
    while(1)
    {
        //
        // Tell the user what to do.
        //
        UpdateStatus(true, "Please choose the operating mode.");

        //
        // Now wait until the user selects whether we should run as the sender
        // or the receiver.
        //
        while(g_ulMode == MODE_UNDEFINED)
        {
            //
            // Just spin, processing UI messages and waiting for someone to
            // press one of the mode buttons.
            //
            WidgetMessageQueueProcess();
        }

        //
        // At this point, the mode is set so remove the buttons from the
        // display and replace them with the LEDs.
        //
        WidgetRemove((tWidget *)&g_sBtnContainer);
        WidgetAdd((tWidget *)&g_sBackground,
                  (tWidget *)&g_sLEDContainer);
        WidgetPaint((tWidget *)&g_sBackground);

        //
        // Tell the user what we're doing now.
        //
        UpdateStatus(false, "Joining network...");

        if(!bInitialized)
        {
            //
            // Initialize the SimpliciTI stack  We keep trying to initialize until
            // we get a success return code.  This indicates that we have also
            // successfully joined the network.
            //
            while(SMPL_SUCCESS != SMPL_Init((uint8_t (*)(linkID_t))0))
            {
                ToggleLED(1);
                ToggleLED(2);
                SPIN_ABOUT_A_SECOND;
            }

            //
            // Now that we are initialized, remember not to call this again.
            //
            bInitialized = true;
        }

        //
        // Once we have joined, turn both LEDs on and tell the user what we want
        // them to do.
        //
        SetLED(1, true);
        SetLED(2, true);

        //
        // Now call the function that initiates communication in
        // the desired mode.  Note that these functions will not return
        // until communication is established or an error occurs.
        //
        if(g_ulMode == MODE_SENDER)
        {
            bSuccess = LinkTo();
        }
        else
        {
            bSuccess = LinkFrom();
        }

        //
        // If we were unsuccessfull, go back to the mode selection
        // display.
        //
        if(!bSuccess)
        {
            //
            // Remove the LEDs and show the buttons again.
            //
            WidgetRemove((tWidget *)&g_sLEDContainer);
            WidgetAdd((tWidget *)&g_sBackground, (tWidget *)&g_sBtnContainer);
            WidgetPaint((tWidget *)&g_sBackground);

            //
            // Tell the user what happened.
            //
            UpdateStatus(false, "Error establishing communication!");

            //
            // Remember that we don't have an operating mode chosen.
            //
            g_ulMode = MODE_UNDEFINED;
        }
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;
    smplStatus_t eRetcode;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    MAP_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus("Initializing...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Turn on both our LEDs
    //
    SetLED(1, true);
    SetLED(2, true);

    UpdateStatus("Waiting...");

    //
    // Initialize the SimpliciTI stack but don't set any receive callback.
    //
    while(1)
    {
        eRetcode = SMPL_Init((uint8_t (*)(linkID_t))0);

        if(eRetcode == SMPL_SUCCESS)
        {
            break;
        }

        ToggleLED(1);
        ToggleLED(2);
        SPIN_ABOUT_A_SECOND;
    }

    //
    // Tell the user what's up.
    //
    UpdateStatus("Range Extender active.");

    //
    // Do nothing after this - the SimpliciTI stack code handles all the
    // access point function required.
    //
    while(1)
    {
        //
        // Process the widget message queue.
        //
        WidgetMessageQueueProcess();
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;
    smplStatus_t eRetcode;
    ioctlToken_t eToken;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus("Initializing...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Turn on both our LEDs
    //
    SetLED(1, true);
    SetLED(2, true);

    UpdateStatus("Waiting...");

    //
    // Initialize the SimpliciTI stack but don't set any receive callback.
    //
    while(1)
    {
        eRetcode = SMPL_Init((uint8_t (*)(linkID_t))0);

        if(eRetcode == SMPL_SUCCESS)
        {
            break;
        }

        ToggleLED(1);
        ToggleLED(2);
        SPIN_ABOUT_A_SECOND;
    }

    // This code example changes the Link token to be distributed to those who
    // Join. For the example here this should be done before anyone joins so
    // the Join context is defaulted to OFF for this scenario. See the
    // smpl_config.dat file. After the link token is set the Join context must
    // be enabled.
    //
    // NOTE that this is done after initialization. For APs the init sequence
    // consists of a step in which a link token is generated. The sequence here
    // overrides that setting. It can be used to distribute different link
    // tokens to different devices. The sequence here is a simple example of
    // how to use the IOCTL interface to set the Link token for subsequent
    // Joiners.
    //
    // You might want to be careful about following this particular example if
    // you are restoring from NV unless you are setting a fixed value as is
    // done here.  Unconditionally setting a random value will make it
    // essentially impossible for newly joining devices to link to devices that
    // joined before the AP was reset since they will have different link
    // tokens.
    //
    eToken.tokenType       = TT_LINK;
    eToken.token.linkToken = 0x78563412;

    SMPL_Ioctl(IOCTL_OBJ_TOKEN, IOCTL_ACT_SET, &eToken);

    //
    // Enable join context.
    //
    SMPL_Ioctl(IOCTL_OBJ_AP_JOIN, IOCTL_ACT_ON, 0);

    //
    // Tell the user what's up.
    //
    UpdateStatus("Access point active.");

    //
    // Do nothing after this - the SimpliciTI stack code handles all the
    // access point function required.
    //
    while(1)
    {
        //
        // Process the widget message queue.
        //
        WidgetMessageQueueProcess();
    }
}
//*****************************************************************************
//
// Main application entry function.
//
//*****************************************************************************
int
main(void)
{
    tBoolean bRetcode;

    //
    // Set the system clock to run at 50MHz from the PLL
    //
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
                       SYSCTL_XTAL_16MHZ);

    //
    // NB: We don't call PinoutSet() in this testcase since the EM header
    // expansion board doesn't currently have an I2C ID EEPROM.  If we did
    // call PinoutSet() this would configure all the EPI pins for SDRAM and
    // we don't want to do this.
    //
    g_eDaughterType = DAUGHTER_NONE;

    //
    // Enable peripherals required to drive the LCD.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);

    //
    // Configure SysTick for a 10Hz interrupt.
    //
    ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
    ROM_SysTickEnable();
    ROM_SysTickIntEnable();

    //
    // Initialize the display driver.
    //
    Kitronix320x240x16_SSD2119Init();

    //
    // Initialize the touch screen driver.
    //
    TouchScreenInit();

    //
    // Set the touch screen event handler.
    //
    TouchScreenCallbackSet(WidgetPointerMessage);

    //
    // Add the compile-time defined widgets to the widget tree.
    //
    WidgetAdd(WIDGET_ROOT, (tWidget *)&g_sHeading);

    //
    // Initialize the status string.
    //
    UpdateStatus(true, "Joining network...");

    //
    // Paint the widget tree to make sure they all appear on the display.
    //
    WidgetPaint(WIDGET_ROOT);

    //
    // Initialize the SimpliciTI BSP.
    //
    BSP_Init();

    //
    // Set the SimpliciTI device address using the current Ethernet MAC address
    // to ensure something like uniqueness.
    //
    bRetcode = SetSimpliciTIAddress();

    //
    // Did we have a problem with the address?
    //
    if(!bRetcode)
    {
        //
        // Yes - make sure the display is updated then hang the app.
        //
        WidgetMessageQueueProcess();
        while(1)
        {
            //
            // MAC address is not set so hang the app.
            //
        }
    }

    //
    // Turn both "LEDs" off.
    //
    SetLED(1, false);
    SetLED(2, false);

    //
    // Keep trying to join (a side effect of successful initialization) until
    // successful.  Toggle LEDS to indicate that joining has not occurred.
    //
    while(SMPL_SUCCESS != SMPL_Init(0))
    {
      ToggleLED(1);
      ToggleLED(2);
      SPIN_ABOUT_A_SECOND;
    }

    //
    // We have joined the network so turn on both "LEDs" to indicate this.
    //
    SetLED(1, true);
    SetLED(2, true);
    UpdateStatus(true, "Joined network");

    //
    // Link to the access point which is now listening for us and continue
    // processing.  This function does not return.
    //
    LinkTo();
}