TM4C1290NCPDT: Watchdog

	#if (INT_WDOG_ENABLED)

/// Initialize the watchdog
void watchdog_init()
{ 
U4	u4_temp;
	
	for (u4_temp = 0; u4_temp < 500000L; u4_temp++) ;
	
	SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG0);
	while(!SysCtlPeripheralReady(SYSCTL_PERIPH_WDOG0)) ;

    // Turn on stalling so the debugger doesn't reset the board.
    WatchdogStallEnable(WATCHDOG0_BASE);

    // Initialize the watchdog timer to an initial value of 6s
    WatchdogReloadSet(WATCHDOG0_BASE, g_SysClock*6);
    WatchdogResetEnable(WATCHDOG0_BASE);  // Enable the reset.
//    WatchdogEnable(WATCHDOG0_BASE);    // Enable the watchdog timer.  This function is not called as this function & WatchdogIntEnable() are same
}

// Routine called from infinite loop in the main function to refresh the watchdog
void watchdog_refresh(void)
{
	WatchdogReloadSet(WATCHDOG0_BASE, g_SysClock*6);			// Reload value is 6 seconds. So the time out for WatchDog Reset is 12 Seconds
}
	#endif

int main(void)
{
U1	u1_key_code;
U4	u4_signature;
BIT	fl_led_on;
		
	SystemCoreClockUpdate();              		// Update SystemCoreClock variable

	IntMasterDisable();							//Disable all interrupts
	init_devices_main();
	init_flags();
	init_variables();
	
	init_modules();							// Initialize the various software modules used
	SysTick_Config(g_SysClock/1000-1);		// Generate interrupt each 1 ms
	nvm_init();

	u4_mscount = 0;
	u1_disp_data = 'A';

	SCB->ICSR |= SCB_ICSR_PENDSTCLR_Msk;

	status_led_on();
	error_led_on();
	delay1();
	status_led_off();
	error_led_off();
	delay1();

	nvm_readSequence(ADR_SIGNATURE, (U1*) &u4_signature,4);

	if (u4_signature != U2_NVM_SIGNATURE)
	{
		u4_signature = U2_NVM_SIGNATURE;
		nvm_writeSequence(ADR_SIGNATURE, (U1*) &u4_signature,4);
		nvm_readSequence(ADR_SIGNATURE, (U1*) &u4_signature,4);
		if (u4_signature != U2_NVM_SIGNATURE)
		{
			uputs(0,3,20," EEPROM ERROR !!!   ");
			disp_val(14,3,u4_signature,5,0);
			wait_1s();
			wait_1s();
			wait_1s();
		}
		master_clear(U1_CALIB_ERASE);
	}
	else
	{
		load_settings();
		load_results();
		load_calibration();
		load_configuration();
		load_rules();
		
		// Post NVM Load function calls
		RuleEng_decode_rules();
	} 

	IntMasterEnable();							//Enable all interrupts

	#if (INT_WDOG_ENABLED)
	watchdog_init();
	#endif
	
	clr_display();
	u1_disp_mode = U1_NORMAL_DISP_MODE1;  

	fl_socket_connected = FALSE;
	fl_dump_socket_connected = FALSE;
	wifi_connection_status = WiFi_CC3100_connect2AP();

	if (wifi_connection_status == 0)
	{
		if (WiFi_Socket_open() == 1) fl_socket_connected = TRUE;
		else fl_socket_connected = FALSE;
		
	}

	fl_led_on = FALSE;

	while (1)
	{
		#if (INT_WDOG_ENABLED)
		watchdog_refresh();
		#endif
		
		do_process();
		disp_led_status();
		RtcReadTime();

		if ((fl_socket_connected == TRUE) && (wifi_connection_status == 0))
		{
			if (fl500ms_event != FALSE)
			{
				fl500ms_event = FALSE;
				if (fl_led_on == TRUE) 
				{
					error_led_off();
					fl_led_on = FALSE;
				}
				else
				{
					error_led_on();
					fl_led_on = TRUE;
				}
			}
		}
		else 
		{
			if (fl_led_on == TRUE)
			{
				fl_led_on = FALSE;
				error_led_off();
			}
			else
			{
				fl_led_on = TRUE;
				error_led_on();
			}
		}
		
		if (fl_socket_connected != TRUE)
		{
			if (WiFi_Socket_open() == 1) 
			{
				fl_socket_connected = TRUE;
			}
			else 
			{
				wifi_connection_status = WiFi_CC3100_connect2AP();
				if (wifi_connection_status == 0)
				{
					if (WiFi_Socket_open() == 1) fl_socket_connected = TRUE;
				}
			}	
		}
	}
}