Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_wdt.c

Revision:

3:f151d08d335c

Parent:

2:1df0b61d3b5a

--- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_wdt.c	Fri Feb 28 18:52:52 2014 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,271 +0,0 @@
-#ifdef __LPC17XX__
-
-/**********************************************************************
-* $Id$		lpc17xx_wdt.c			2010-05-21
-*//**
-* @file		lpc17xx_wdt.c
-* @brief	Contains all functions support for WDT firmware library
-* 			on LPC17xx
-* @version	2.0
-* @date		21. May. 2010
-* @author	NXP MCU SW Application Team
-*
-* Copyright(C) 2010, NXP Semiconductor
-* All rights reserved.
-*
-***********************************************************************
-* 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.
-**********************************************************************/
-
-/* Peripheral group ----------------------------------------------------------- */
-/** @addtogroup WDT
- * @{
- */
-
-/* Includes ------------------------------------------------------------------- */
-#include "lpc17xx_wdt.h"
-#include "lpc17xx_clkpwr.h"
-#include "lpc17xx_pinsel.h"
-
-
-/* If this source file built with example, the LPC17xx FW library configuration
- * file in each example directory ("lpc17xx_libcfg.h") must be included,
- * otherwise the default FW library configuration file must be included instead
- */
-#ifdef __BUILD_WITH_EXAMPLE__
-#include "lpc17xx_libcfg.h"
-#else
-#include "lpc17xx_libcfg_default.h"
-#endif /* __BUILD_WITH_EXAMPLE__ */
-
-
-#ifdef _WDT
-
-/* Private Functions ---------------------------------------------------------- */
-
-static uint8_t WDT_SetTimeOut (uint8_t clk_source, uint32_t timeout);
-
-/********************************************************************//**
- * @brief 		Set WDT time out value and WDT mode
- * @param[in]	clk_source select Clock source for WDT device
- * @param[in]	timeout value of time-out for WDT (us)
- * @return		None
- *********************************************************************/
-static uint8_t WDT_SetTimeOut (uint8_t clk_source, uint32_t timeout)
-{
-
-	uint32_t pclk_wdt = 0;
-	uint32_t tempval = 0;
-
-	switch ((WDT_CLK_OPT) clk_source)
-    {
-    case WDT_CLKSRC_IRC:
-    	pclk_wdt = 4000000;
-    	// Calculate TC in WDT
-    	tempval  = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
-    	// Check if it valid
-    	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
-    	{
-    		LPC_WDT->WDTC = tempval;
-    		return	SUCCESS;
-    	}
-
-    	break;
-
-    case WDT_CLKSRC_PCLK:
-
-    	// Get WDT clock with CCLK divider = 4
-		pclk_wdt = SystemCoreClock / 4;
-		// Calculate TC in WDT
-		tempval  = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
-
-		if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
-		{
-			CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_4);
-			LPC_WDT->WDTC = (uint32_t) tempval;
-			return SUCCESS;
-		}
-
-		// Get WDT clock with CCLK divider = 2
-		pclk_wdt = SystemCoreClock / 2;
-		// Calculate TC in WDT
-		tempval  = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
-
-		if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
-		{
-			CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_2);
-			LPC_WDT->WDTC = (uint32_t) tempval;
-			return	SUCCESS;
-		}
-
-		// Get WDT clock with CCLK divider = 1
-		pclk_wdt = SystemCoreClock;
-		// Calculate TC in WDT
-		tempval  = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
-
-		if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
-		{
-			CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_1);
-			LPC_WDT->WDTC = (uint32_t) tempval;
-			return	SUCCESS;
-		}
-		break ;
-
-
-    case WDT_CLKSRC_RTC:
-		pclk_wdt = 32768;
-		// Calculate TC in WDT
-		tempval  = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
-		// Check if it valid
-		if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
-		{
-			LPC_WDT->WDTC = (uint32_t) tempval;
-			return	SUCCESS;
-		}
-
-		break;
-
-// Error parameter
-		default:
-			break;
-}
-
-	return ERROR;
-}
-
-/* End of Private Functions --------------------------------------------------- */
-
-
-/* Public Functions ----------------------------------------------------------- */
-/** @addtogroup WDT_Public_Functions
- * @{
- */
-
-
-/*********************************************************************//**
-* @brief 		Initial for Watchdog function
-* 					Clock source = RTC ,
-* @param[in]	ClkSrc  Select clock source, should be:
-* 				- WDT_CLKSRC_IRC: Clock source from Internal RC oscillator
-* 				- WDT_CLKSRC_PCLK: Selects the APB peripheral clock (PCLK)
-* 				- WDT_CLKSRC_RTC: Selects the RTC oscillator
-* @param[in]	WDTMode WDT mode, should be:
-* 				- WDT_MODE_INT_ONLY: Use WDT to generate interrupt only
-* 				- WDT_MODE_RESET: Use WDT to generate interrupt and reset MCU
-* @return 		None
- **********************************************************************/
-void WDT_Init (WDT_CLK_OPT ClkSrc, WDT_MODE_OPT WDTMode)
-{
-	CHECK_PARAM(PARAM_WDT_CLK_OPT(ClkSrc));
-	CHECK_PARAM(PARAM_WDT_MODE_OPT(WDTMode));
-	CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_4);
-
-	//Set clock source
-	LPC_WDT->WDCLKSEL &= ~WDT_WDCLKSEL_MASK;
-	LPC_WDT->WDCLKSEL |= ClkSrc;
-	//Set WDT mode
-	if (WDTMode == WDT_MODE_RESET){
-		LPC_WDT->WDMOD |= WDT_WDMOD(WDTMode);
-	}
-}
-
-/*********************************************************************//**
-* @brief 		Start WDT activity with given timeout value
-* @param[in]	TimeOut WDT reset after timeout if it is not feed
-* @return 		None
- **********************************************************************/
-void WDT_Start(uint32_t TimeOut)
-{
-	uint32_t ClkSrc;
-
-	ClkSrc = LPC_WDT->WDCLKSEL;
-	ClkSrc &=WDT_WDCLKSEL_MASK;
-	WDT_SetTimeOut(ClkSrc,TimeOut);
-	//enable watchdog
-	LPC_WDT->WDMOD |= WDT_WDMOD_WDEN;
-	WDT_Feed();
-}
-
-/********************************************************************//**
- * @brief 		Read WDT Time out flag
- * @param[in]	None
- * @return		Time out flag status of WDT
- *********************************************************************/
-FlagStatus WDT_ReadTimeOutFlag (void)
-{
-	return ((FlagStatus)((LPC_WDT->WDMOD & WDT_WDMOD_WDTOF) >>2));
-}
-
-/********************************************************************//**
- * @brief 		Clear WDT Time out flag
- * @param[in]	None
- * @return		None
- *********************************************************************/
-void WDT_ClrTimeOutFlag (void)
-{
-	LPC_WDT->WDMOD &=~WDT_WDMOD_WDTOF;
-}
-
-/********************************************************************//**
- * @brief 		Update WDT timeout value and feed
- * @param[in]	TimeOut	TimeOut value to be updated
- * @return		None
- *********************************************************************/
-void WDT_UpdateTimeOut ( uint32_t TimeOut)
-{
-	uint32_t ClkSrc;
-	ClkSrc = LPC_WDT->WDCLKSEL;
-	ClkSrc &=WDT_WDCLKSEL_MASK;
-	WDT_SetTimeOut(ClkSrc,TimeOut);
-	WDT_Feed();
-}
-
-
-/********************************************************************//**
- * @brief 		After set WDTEN, call this function to start Watchdog
- * 				or reload the Watchdog timer
- * @param[in]	None
- *
- * @return		None
- *********************************************************************/
-void WDT_Feed (void)
-{
-	// Disable irq interrupt
-	__disable_irq();
-	LPC_WDT->WDFEED = 0xAA;
-	LPC_WDT->WDFEED = 0x55;
-	// Then enable irq interrupt
-	__enable_irq();
-}
-
-/********************************************************************//**
- * @brief 		Get the current value of WDT
- * @param[in]	None
- * @return		current value of WDT
- *********************************************************************/
-uint32_t WDT_GetCurrentCount(void)
-{
-	return LPC_WDT->WDTV;
-}
-
-/**
- * @}
- */
-
-#endif /* _WDT */
-
-/**
- * @}
- */
-
-/* --------------------------------- End Of File ------------------------------ */
-#endif /* __LPC17XX__ */