Beispiel #1
0
//****************************************************************************
//
//! Implements Sleep followed by wakeup using WDT timeout
//!
//! \param none
//!
//! This function
//!    1. Implements Sleep followed by wakeup using WDT
//!
//! \return None.
//
//****************************************************************************
void PerformPRCMSleepWDTWakeup()
{
    //
    // Initialize the WDT
    //
    WDT_IF_Init(AppWDTCallBackHandler, (4 * SYS_CLK));

    //
    // Enable the Sleep Clock
    //
    MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_SLP_MODE_CLK);

    //
    // Enter SLEEP...WaitForInterrupt ARM intrinsic
    //
    DBG_PRINT("WDT_SLEEP: Entering Sleep\n\r");
    MAP_UtilsDelay(80000);
    MAP_PRCMSleepEnter();
    DBG_PRINT("WDT_SLEEP: Exiting Sleep\n\r");

    //
    // Disable the Sleep Clock
    //
    MAP_PRCMPeripheralClkDisable(PRCM_WDT, PRCM_SLP_MODE_CLK);

    //
    // Deinitialize the WDT
    //
    WDT_IF_DeInit();

    //
    // PowerOff WDT
    //
    MAP_PRCMPeripheralClkDisable(PRCM_WDT, PRCM_RUN_MODE_CLK);
}
Beispiel #2
0
//*****************************************************************************
//
//!	main function demonstrates the use of the watchdog timer to perform system
//! reset.
//!
//! \param  None
//!
//! \return None
//
//*****************************************************************************
void main(void)
{
    tBoolean bRetcode;
    //
    // Initialize the board
    //
    BoardInit();
    //
    // Pinmuxing for LEDs
    //
    PinMuxConfig();
    //
    // configure RED LED
    //
    GPIO_IF_LedConfigure(LED1);

	GPIO_IF_LedOff(MCU_RED_LED_GPIO);

    //
    // Enable the peripherals used by this example.
    //
    MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_RUN_MODE_CLK);

    //
    // Set up the watchdog interrupt handler.
    //
    WDT_IF_Init(WatchdogIntHandler, MILLISECONDS_TO_TICKS(WD_PERIOD_MS));
    
    //
    // Start the timer. Once the timer is started, it cannot be disable.
    //
    MAP_WatchdogEnable(WDT_BASE);
    bRetcode = MAP_WatchdogRunning(WDT_BASE);
    if(!bRetcode)
    {
       WDT_IF_DeInit();
    }

    //
    // Loop forever while the LED winks as watchdog interrupts are handled.
    //
    while(FOREVER)
    {

    }
}
Beispiel #3
0
//*****************************************************************************
//
//!    main function demonstrates the use of the watchdog timer to perform system
//! reset.
//!
//! \param  None
//!
//! \return None
//
//*****************************************************************************
void main(void)
{
    tBoolean bRetcode;
    //
    // Initialize the board
    //
    BoardInit();
    //
    // Pinmuxing for LEDs
    //
    PinMuxConfig();
    //
    // configure RED LED
    //
    GPIO_IF_LedConfigure(LED1);

    GPIO_IF_LedOff(MCU_RED_LED_GPIO);

    //
    // Set up the watchdog interrupt handler.
    //
    WDT_IF_Init(WatchdogIntHandler, MILLISECONDS_TO_TICKS(WD_PERIOD_MS));
    
    bRetcode = MAP_WatchdogRunning(WDT_BASE);
    if(!bRetcode)
    {
       WDT_IF_DeInit();
    }

    //
    // Loop forever while the LED winks as watchdog interrupts are handled.
    //
    while(FOREVER)
    {

    }
}
Beispiel #4
0
//*****************************************************************************
//
//! \brief Connecting to a WLAN Accesspoint
//! This function connects to the required AP (SSID_NAME).
//! This code example assumes the AP doesn't use WIFI security.
//! The function will return only once we are connected
//! and have acquired IP address
//!
//! \param[in] None
//!
//! \return 0 means success, -1 means failure
//!
//! \note
//!
//! \warning    If the WLAN connection fails or we don't aquire an IP address,
//!             We will be stuck in this function forever.
//
//*****************************************************************************
int WlanConnect()
{
    int iRetCode = 0;
    int iRetVal = 0;
    int iConnect = 0;
    unsigned char ucQueueMsg = 0;
    SlSecParams_t secParams;

    secParams.Key = (signed char *)SECURITY_KEY;
    secParams.KeyLen = strlen((const char *)secParams.Key);
    secParams.Type = SECURITY_TYPE;

    //
    // Set up the watchdog interrupt handler.
    //
    WDT_IF_Init(WatchdogIntHandler, MILLISECONDS_TO_TICKS(WD_PERIOD_MS));
    /* Enabling the Sleep clock for the Watch Dog Timer*/
    MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_SLP_MODE_CLK);
    
    g_ucFeedWatchdog = 1;
    g_ucWdogCount = 0;
    while(!(ucQueueMsg & (EVENT_IP_ACQUIRED|CONNECTION_FAILED)))
    {
        UART_PRINT("Trying to connect to AP: ");
        UART_PRINT(SSID_NAME);
        UART_PRINT("\n\r");
        sl_WlanConnect((signed char *)SSID_NAME,
                        strlen((const char *)SSID_NAME), 0, &secParams, 0);
        iConnect = 0;
        do{
            osi_MsgQRead(&g_tConnection, &ucQueueMsg, OSI_WAIT_FOREVER);

            switch(ucQueueMsg)
            {
                case EVENT_CONNECTION:
                    iConnect = 1;
                    break;

                case EVENT_IP_ACQUIRED:
                    iRetVal = 0;
                    break;

                case WDOG_EXPIRED:

                    //
                    // disconnect from the Access Point
                    //
                    if(iConnect)
                    {
                        WlanDisconnect();
                    }

                    //
                    // stop the simplelink with reqd. timeout value (30 ms)
                    //
                    sl_Stop(SL_STOP_TIMEOUT);

                    UART_PRINT("sl stop\n\r");

                    MAP_UtilsDelay(8000);

                    //
                    // starting the simplelink
                    //
                    sl_Start(NULL, NULL, NULL);

                    UART_PRINT("sl start\n\r");
                    break;

                case EVENT_DISCONNECTION:
                    iConnect = 0;
                    break;

                case CONNECTION_FAILED:
                    iRetVal = -1;
                    break;

                default:
                    UART_PRINT("unexpected event\n\r");
                    break;
            }
        }while(ucQueueMsg == (unsigned char)EVENT_CONNECTION);
    }
    iRetCode = MAP_WatchdogRunning(WDT_BASE);
    if(iRetCode)
    {
       WDT_IF_DeInit();
       MAP_PRCMPeripheralClkDisable(PRCM_WDT, PRCM_RUN_MODE_CLK);
    }
    ASSERT_ON_ERROR(iRetVal);
    return(iRetVal);
}