Frank 26080115 / LPC1700CMSIS_Examples

These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

WDT/INTERRUPT/wdt_interrupt_test.c@0:bf7b9fba3924, 2011-03-20 (annotated)

Committer:
frank26080115
Date:
Sun Mar 20 05:38:56 2011 +0000
Revision:
0:bf7b9fba3924

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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/***********************************************************************//**





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 * @file		wdt_interrupt_test.c





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 * @purpose		This example describes how to use Watch-dog timer application





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 *            	in interrupt mode





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 * @version		2.0





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 * @date		21. May. 2010





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 * @author		NXP MCU SW Application Team





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 *---------------------------------------------------------------------





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 * Software that is described herein is for illustrative purposes only





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 * which provides customers with programming information regarding the





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 * products. This software is supplied "AS IS" without any warranties.





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 * NXP Semiconductors assumes no responsibility or liability for the





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 * use of the software, conveys no license or title under any patent,





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 * copyright, or mask work right to the product. NXP Semiconductors





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 * reserves the right to make changes in the software without





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 * notification. NXP Semiconductors also make no representation or





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 * warranty that such application will be suitable for the specified





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 * use without further testing or modification.





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 **********************************************************************/





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#include "lpc17xx_wdt.h"





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#include "lpc17xx_libcfg.h"





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#include "lpc17xx_pinsel.h"





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#include "debug_frmwrk.h"





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#include "lpc17xx_gpio.h"





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/* Example group ----------------------------------------------------------- */





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/** @defgroup WDT_INTERRUPT	INTERRUPT





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 * @ingroup WDT_Examples





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 * @{





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 */





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/************************** PRIVATE DEFINITIONS *************************/





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#define MCB_LPC_1768





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//#define IAR_LPC_1768





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//Watchodog time out in 5 seconds





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#define WDT_TIMEOUT 	5000000





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/************************** PRIVATE VARIABLES *************************/





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uint8_t menu1[] =





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"********************************************************************************\n\r"





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"Hello NXP Semiconductors \n\r"





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" Watch dog timer interrupt (test or debug mode) demo \n\r"





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"\t - MCU: LPC17xx \n\r"





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"\t - Core: Cortex M3 \n\r"





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"\t - Communicate via: UART0 -  115200 bps \n\r"





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" Use WDT with Internal RC OSC, interrupt mode (test only), timeout = 1 seconds \n\r"





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" To generate an interrupt, after interrupt WDT interrupt is disabled immediately! \n\r"





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"********************************************************************************\n\r";





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uint8_t info1[] = "BEFORE WDT interrupt!\n\r";





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uint8_t info2[] = "AFTER WDT interrupt\n\r";





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__IO Bool wdt_flag = FALSE;





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__IO Bool LED_toggle = FALSE;





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/************************** PRIVATE FUNCTION *************************/





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void WDT_IRQHandler(void);





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void print_menu(void);





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void LED_Init (void);





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/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/





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/*********************************************************************//**





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 * @brief		WDT interrupt handler sub-routine





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 * @param[in]	None





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 * @return 		None





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 **********************************************************************/





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void WDT_IRQHandler(void)





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{





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	// Disable WDT interrupt





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	NVIC_DisableIRQ(WDT_IRQn);





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	// Set WDT flag according





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	if (wdt_flag == TRUE)





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		wdt_flag = FALSE;





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	else





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		wdt_flag = TRUE;





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	// Clear TimeOut flag





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	WDT_ClrTimeOutFlag();





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}





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/*-------------------------PRIVATE FUNCTIONS------------------------------*/





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/*********************************************************************//**





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 * @brief		Print menu





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 * @param[in]	None





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 * @return 		None





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 **********************************************************************/





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void print_menu(void)





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{





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	_DBG(menu1);





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}





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/*********************************************************************//**





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 * @brief		Initialize LEDs





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 * @param[in]	None





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 * @return 		None





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 **********************************************************************/





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void LED_Init (void)





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{





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#ifdef MCB_LPC_1768 /* Using LED2.2 for testing */





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	//turn on LED2.2





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	FIO_SetDir(2,(1<<2),1);





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	FIO_SetValue(2,(1<<2));





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#elif defined(IAR_LPC_1768) /* Using LED1 (P1.25 for testing */





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	FIO_SetDir(1,(1<<25),1);





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	FIO_ClearValue(1,(1<<25));





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#endif





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}





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/*-------------------------MAIN FUNCTION------------------------------*/





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/*********************************************************************//**





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 * @brief		c_entry: Main WDT program body





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 * @param[in]	None





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 * @return 		int





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 **********************************************************************/





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int c_entry(void)





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{





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	uint32_t delay;





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	// Init LED port





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	LED_Init();





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	/* Initialize debug via UART0





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	 * – 115200bps





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	 * – 8 data bit





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	 * – No parity





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	 * – 1 stop bit





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	 * – No flow control





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	 */





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	debug_frmwrk_init();





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	// print welcome screen





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	print_menu();





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	/* Install interrupt for WDT interrupt */





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	NVIC_SetPriority(WDT_IRQn, 0x10);





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	// Set Watchdog use internal RC, just generate interrupt only in 5ms if Watchdog is not feed





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	// Init WDT, IRC OSC, interrupt mode, timeout = 5000000 us = 5s





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	WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_INT_ONLY);





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	/* Enable the Watch dog interrupt*/





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	NVIC_EnableIRQ(WDT_IRQn);





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	while (1)





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	{





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		if (wdt_flag == FALSE){ //before WDT interrupt





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			_DBG_(info1);





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			_DBG_("Press '1' to enable Watchdog timer...");





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			while(_DG !='1');





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			// Start watchdog with timeout given





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			WDT_Start(WDT_TIMEOUT);





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			while(wdt_flag == FALSE)





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			{





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				_DBD32(WDT_GetCurrentCount()); _DBG_("");





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			}





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		} else { // after WDT interrupt





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			_DBG_(info2);





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			_DBG_("LED is blinking...");





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			while(wdt_flag == TRUE)





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			{





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				if (LED_toggle == FALSE)





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				{





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#ifdef MCB_LPC_1768





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					//turn on LED





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					GPIO_SetValue(2,(1<<2));





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#elif defined(IAR_LPC_1768)





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					GPIO_ClearValue(1,(1<<25));





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#endif





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					LED_toggle = TRUE;





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				}





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				else





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				{





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#ifdef MCB_LPC_1768





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					//turn off LED





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					GPIO_ClearValue(2,(1<<2));





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#elif defined(IAR_LPC_1768)





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					GPIO_SetValue(1,(1<<25));





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#endif





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					LED_toggle = FALSE;





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				}





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				//delay





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				for(delay = 0; delay<1000000; delay ++);





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			}





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		}





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	}





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	return 1;





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}





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/* Support required entry point for other toolchain */





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int main (void)





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{





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	return c_entry();





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}





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#ifdef  DEBUG





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/*******************************************************************************





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* @brief		Reports the name of the source file and the source line number





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* 				where the CHECK_PARAM error has occurred.





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* @param[in]	file Pointer to the source file name





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* @param[in]    line assert_param error line source number





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* @return		None





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*******************************************************************************/





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void check_failed(uint8_t *file, uint32_t line)





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{





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	/* User can add his own implementation to report the file name and line number,





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	 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */





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	/* Infinite loop */





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	while(1);





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}





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#endif





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/*





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 * @}





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 */