These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: WDT/INTERRUPT/wdt_interrupt_test.c
- Revision:
- 0:bf7b9fba3924
diff -r 000000000000 -r bf7b9fba3924 WDT/INTERRUPT/wdt_interrupt_test.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WDT/INTERRUPT/wdt_interrupt_test.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,214 @@ +/***********************************************************************//** + * @file wdt_interrupt_test.c + * @purpose This example describes how to use Watch-dog timer application + * in interrupt mode + * @version 2.0 + * @date 21. May. 2010 + * @author NXP MCU SW Application Team + *--------------------------------------------------------------------- + * Software that is described herein is for illustrative purposes only + * which provides customers with programming information regarding the + * products. This software is supplied "AS IS" without any warranties. + * NXP Semiconductors assumes no responsibility or liability for the + * use of the software, conveys no license or title under any patent, + * copyright, or mask work right to the product. NXP Semiconductors + * reserves the right to make changes in the software without + * notification. NXP Semiconductors also make no representation or + * warranty that such application will be suitable for the specified + * use without further testing or modification. + **********************************************************************/ +#include "lpc17xx_wdt.h" +#include "lpc17xx_libcfg.h" +#include "lpc17xx_pinsel.h" +#include "debug_frmwrk.h" +#include "lpc17xx_gpio.h" + +/* Example group ----------------------------------------------------------- */ +/** @defgroup WDT_INTERRUPT INTERRUPT + * @ingroup WDT_Examples + * @{ + */ + +/************************** PRIVATE DEFINITIONS *************************/ +#define MCB_LPC_1768 +//#define IAR_LPC_1768 + +//Watchodog time out in 5 seconds +#define WDT_TIMEOUT 5000000 + + +/************************** PRIVATE VARIABLES *************************/ +uint8_t menu1[] = +"********************************************************************************\n\r" +"Hello NXP Semiconductors \n\r" +" Watch dog timer interrupt (test or debug mode) demo \n\r" +"\t - MCU: LPC17xx \n\r" +"\t - Core: Cortex M3 \n\r" +"\t - Communicate via: UART0 - 115200 bps \n\r" +" Use WDT with Internal RC OSC, interrupt mode (test only), timeout = 1 seconds \n\r" +" To generate an interrupt, after interrupt WDT interrupt is disabled immediately! \n\r" +"********************************************************************************\n\r"; +uint8_t info1[] = "BEFORE WDT interrupt!\n\r"; +uint8_t info2[] = "AFTER WDT interrupt\n\r"; + +__IO Bool wdt_flag = FALSE; +__IO Bool LED_toggle = FALSE; + +/************************** PRIVATE FUNCTION *************************/ +void WDT_IRQHandler(void); + +void print_menu(void); +void LED_Init (void); + +/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/ +/*********************************************************************//** + * @brief WDT interrupt handler sub-routine + * @param[in] None + * @return None + **********************************************************************/ +void WDT_IRQHandler(void) +{ + // Disable WDT interrupt + NVIC_DisableIRQ(WDT_IRQn); + // Set WDT flag according + if (wdt_flag == TRUE) + wdt_flag = FALSE; + else + wdt_flag = TRUE; + // Clear TimeOut flag + WDT_ClrTimeOutFlag(); +} + +/*-------------------------PRIVATE FUNCTIONS------------------------------*/ +/*********************************************************************//** + * @brief Print menu + * @param[in] None + * @return None + **********************************************************************/ +void print_menu(void) +{ + _DBG(menu1); +} + +/*********************************************************************//** + * @brief Initialize LEDs + * @param[in] None + * @return None + **********************************************************************/ +void LED_Init (void) +{ +#ifdef MCB_LPC_1768 /* Using LED2.2 for testing */ + //turn on LED2.2 + FIO_SetDir(2,(1<<2),1); + FIO_SetValue(2,(1<<2)); +#elif defined(IAR_LPC_1768) /* Using LED1 (P1.25 for testing */ + FIO_SetDir(1,(1<<25),1); + FIO_ClearValue(1,(1<<25)); +#endif +} + +/*-------------------------MAIN FUNCTION------------------------------*/ +/*********************************************************************//** + * @brief c_entry: Main WDT program body + * @param[in] None + * @return int + **********************************************************************/ +int c_entry(void) +{ + uint32_t delay; + // Init LED port + LED_Init(); + + /* Initialize debug via UART0 + * 115200bps + * 8 data bit + * No parity + * 1 stop bit + * No flow control + */ + debug_frmwrk_init(); + + // print welcome screen + print_menu(); + + /* Install interrupt for WDT interrupt */ + NVIC_SetPriority(WDT_IRQn, 0x10); + // Set Watchdog use internal RC, just generate interrupt only in 5ms if Watchdog is not feed + + // Init WDT, IRC OSC, interrupt mode, timeout = 5000000 us = 5s + WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_INT_ONLY); + + /* Enable the Watch dog interrupt*/ + NVIC_EnableIRQ(WDT_IRQn); + + while (1) + { + if (wdt_flag == FALSE){ //before WDT interrupt + _DBG_(info1); + _DBG_("Press '1' to enable Watchdog timer..."); + while(_DG !='1'); + // Start watchdog with timeout given + WDT_Start(WDT_TIMEOUT); + while(wdt_flag == FALSE) + { + _DBD32(WDT_GetCurrentCount()); _DBG_(""); + } + } else { // after WDT interrupt + _DBG_(info2); + _DBG_("LED is blinking..."); + while(wdt_flag == TRUE) + { + if (LED_toggle == FALSE) + { +#ifdef MCB_LPC_1768 + //turn on LED + GPIO_SetValue(2,(1<<2)); +#elif defined(IAR_LPC_1768) + GPIO_ClearValue(1,(1<<25)); +#endif + LED_toggle = TRUE; + } + else + { +#ifdef MCB_LPC_1768 + //turn off LED + GPIO_ClearValue(2,(1<<2)); +#elif defined(IAR_LPC_1768) + GPIO_SetValue(1,(1<<25)); +#endif + LED_toggle = FALSE; + } + //delay + for(delay = 0; delay<1000000; delay ++); + } + } + } + return 1; +} + +/* Support required entry point for other toolchain */ +int main (void) +{ + return c_entry(); +} +#ifdef DEBUG +/******************************************************************************* +* @brief Reports the name of the source file and the source line number +* where the CHECK_PARAM error has occurred. +* @param[in] file Pointer to the source file name +* @param[in] line assert_param error line source number +* @return None +*******************************************************************************/ +void check_failed(uint8_t *file, uint32_t line) +{ + /* User can add his own implementation to report the file name and line number, + ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + + /* Infinite loop */ + while(1); +} +#endif + +/* + * @} + */