DriverLibrary - NXP's driver library for LPC17xx, ported to mbed'…

Users » igorsk » Code » DriverLibrary

Igor Skochinsky / Mbed 2 deprecated DriverLibrary

NXP's driver library for LPC17xx, ported to mbed's online compiler. Not tested! I had to fix a lot of warings and found a couple of pretty obvious bugs, so the chances are there are more. Original: http://ics.nxp.com/support/documents/microcontrollers/zip/lpc17xx.cmsis.driver.library.zip

Dependencies: mbed

source/lpc17xx_wdt.c@0:1063a091a062, 2010-02-17 (annotated)

Committer:: igorsk
Date:: Wed Feb 17 16:22:39 2010 +0000
Revision:: 0:1063a091a062

Who changed what in which revision?

User	Revision	Line number	New contents of line
igorsk	0:1063a091a062	1	/**
igorsk	0:1063a091a062	2	* @file : lpc17xx_wdt.c
igorsk	0:1063a091a062	3	* @brief : Contains all functions support for WDT firmware library on LPC17xx
igorsk	0:1063a091a062	4	* @version : 1.0
igorsk	0:1063a091a062	5	* @date : 9. April. 2009
igorsk	0:1063a091a062	6	* @author : HieuNguyen
igorsk	0:1063a091a062	7	**************************************************************************
igorsk	0:1063a091a062	8	* Software that is described herein is for illustrative purposes only
igorsk	0:1063a091a062	9	* which provides customers with programming information regarding the
igorsk	0:1063a091a062	10	* products. This software is supplied "AS IS" without any warranties.
igorsk	0:1063a091a062	11	* NXP Semiconductors assumes no responsibility or liability for the
igorsk	0:1063a091a062	12	* use of the software, conveys no license or title under any patent,
igorsk	0:1063a091a062	13	* copyright, or mask work right to the product. NXP Semiconductors
igorsk	0:1063a091a062	14	* reserves the right to make changes in the software without
igorsk	0:1063a091a062	15	* notification. NXP Semiconductors also make no representation or
igorsk	0:1063a091a062	16	* warranty that such application will be suitable for the specified
igorsk	0:1063a091a062	17	* use without further testing or modification.
igorsk	0:1063a091a062	18	**********************************************************************/
igorsk	0:1063a091a062	19
igorsk	0:1063a091a062	20	/* Peripheral group ----------------------------------------------------------- */
igorsk	0:1063a091a062	21	/** @addtogroup WDT
igorsk	0:1063a091a062	22	* @{
igorsk	0:1063a091a062	23	*/
igorsk	0:1063a091a062	24
igorsk	0:1063a091a062	25	/* Includes ------------------------------------------------------------------- */
igorsk	0:1063a091a062	26	#include "lpc17xx_wdt.h"
igorsk	0:1063a091a062	27	#include "lpc17xx_clkpwr.h"
igorsk	0:1063a091a062	28	#include "lpc17xx_pinsel.h"
igorsk	0:1063a091a062	29
igorsk	0:1063a091a062	30
igorsk	0:1063a091a062	31	/* If this source file built with example, the LPC17xx FW library configuration
igorsk	0:1063a091a062	32	* file in each example directory ("lpc17xx_libcfg.h") must be included,
igorsk	0:1063a091a062	33	* otherwise the default FW library configuration file must be included instead
igorsk	0:1063a091a062	34	*/
igorsk	0:1063a091a062	35	#ifdef __BUILD_WITH_EXAMPLE__
igorsk	0:1063a091a062	36	#include "lpc17xx_libcfg.h"
igorsk	0:1063a091a062	37	#else
igorsk	0:1063a091a062	38	#include "lpc17xx_libcfg_default.h"
igorsk	0:1063a091a062	39	#endif /* __BUILD_WITH_EXAMPLE__ */
igorsk	0:1063a091a062	40
igorsk	0:1063a091a062	41
igorsk	0:1063a091a062	42	#ifdef _WDT
igorsk	0:1063a091a062	43
igorsk	0:1063a091a062	44	/* Private Functions ---------------------------------------------------------- */
igorsk	0:1063a091a062	45	/** @defgroup WDT_Private_Functions
igorsk	0:1063a091a062	46	* @{
igorsk	0:1063a091a062	47	*/
igorsk	0:1063a091a062	48
igorsk	0:1063a091a062	49	/******************************************************************//
igorsk	0:1063a091a062	50	* @brief Set WDT time out value and WDT mode
igorsk	0:1063a091a062	51	* @param[in] clk_source select Clock source for WDT device
igorsk	0:1063a091a062	52	* @param[in] timeout value of time-out for WDT (us)
igorsk	0:1063a091a062	53	* @return None
igorsk	0:1063a091a062	54	*********************************************************************/
igorsk	0:1063a091a062	55	uint8_t WDT_SetTimeOut (uint8_t clk_source, uint32_t timeout)
igorsk	0:1063a091a062	56	{
igorsk	0:1063a091a062	57
igorsk	0:1063a091a062	58	uint32_t pclk_wdt = 0;
igorsk	0:1063a091a062	59	uint32_t tempval = 0;
igorsk	0:1063a091a062	60
igorsk	0:1063a091a062	61	switch ((WDT_CLK_OPT) clk_source)
igorsk	0:1063a091a062	62	{
igorsk	0:1063a091a062	63	case WDT_CLKSRC_IRC:
igorsk	0:1063a091a062	64	pclk_wdt = 4000000;
igorsk	0:1063a091a062	65	// Calculate TC in WDT
igorsk	0:1063a091a062	66	tempval = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
igorsk	0:1063a091a062	67	// Check if it valid
igorsk	0:1063a091a062	68	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
igorsk	0:1063a091a062	69	{
igorsk	0:1063a091a062	70	LPC_WDT->WDTC = tempval;
igorsk	0:1063a091a062	71	return SUCCESS;
igorsk	0:1063a091a062	72	}
igorsk	0:1063a091a062	73
igorsk	0:1063a091a062	74	break;
igorsk	0:1063a091a062	75
igorsk	0:1063a091a062	76	case WDT_CLKSRC_PCLK:
igorsk	0:1063a091a062	77
igorsk	0:1063a091a062	78	// Get WDT clock with CCLK divider = 4
igorsk	0:1063a091a062	79	pclk_wdt = SystemCoreClock / 4;
igorsk	0:1063a091a062	80	// Calculate TC in WDT
igorsk	0:1063a091a062	81	tempval = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
igorsk	0:1063a091a062	82
igorsk	0:1063a091a062	83	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
igorsk	0:1063a091a062	84	{
igorsk	0:1063a091a062	85	CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_4);
igorsk	0:1063a091a062	86	LPC_WDT->WDTC = (uint32_t) tempval;
igorsk	0:1063a091a062	87	return SUCCESS;
igorsk	0:1063a091a062	88	}
igorsk	0:1063a091a062	89
igorsk	0:1063a091a062	90	// Get WDT clock with CCLK divider = 2
igorsk	0:1063a091a062	91	pclk_wdt = SystemCoreClock / 2;
igorsk	0:1063a091a062	92	// Calculate TC in WDT
igorsk	0:1063a091a062	93	tempval = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
igorsk	0:1063a091a062	94
igorsk	0:1063a091a062	95	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
igorsk	0:1063a091a062	96	{
igorsk	0:1063a091a062	97	CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_2);
igorsk	0:1063a091a062	98	LPC_WDT->WDTC = (uint32_t) tempval;
igorsk	0:1063a091a062	99	return SUCCESS;
igorsk	0:1063a091a062	100	}
igorsk	0:1063a091a062	101
igorsk	0:1063a091a062	102	// Get WDT clock with CCLK divider = 1
igorsk	0:1063a091a062	103	pclk_wdt = SystemCoreClock;
igorsk	0:1063a091a062	104	// Calculate TC in WDT
igorsk	0:1063a091a062	105	tempval = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
igorsk	0:1063a091a062	106
igorsk	0:1063a091a062	107	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
igorsk	0:1063a091a062	108	{
igorsk	0:1063a091a062	109	CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_1);
igorsk	0:1063a091a062	110	LPC_WDT->WDTC = (uint32_t) tempval;
igorsk	0:1063a091a062	111	return SUCCESS;
igorsk	0:1063a091a062	112	}
igorsk	0:1063a091a062	113	break ;
igorsk	0:1063a091a062	114
igorsk	0:1063a091a062	115
igorsk	0:1063a091a062	116	case WDT_CLKSRC_RTC:
igorsk	0:1063a091a062	117	pclk_wdt = 32768;
igorsk	0:1063a091a062	118	// Calculate TC in WDT
igorsk	0:1063a091a062	119	tempval = (((pclk_wdt) / WDT_US_INDEX) * (timeout / 4));
igorsk	0:1063a091a062	120	// Check if it valid
igorsk	0:1063a091a062	121	if ((tempval >= WDT_TIMEOUT_MIN) && (tempval <= WDT_TIMEOUT_MAX))
igorsk	0:1063a091a062	122	{
igorsk	0:1063a091a062	123	LPC_WDT->WDTC = (uint32_t) tempval;
igorsk	0:1063a091a062	124	return SUCCESS;
igorsk	0:1063a091a062	125	}
igorsk	0:1063a091a062	126
igorsk	0:1063a091a062	127	break;
igorsk	0:1063a091a062	128
igorsk	0:1063a091a062	129	// Error parameter
igorsk	0:1063a091a062	130	default:
igorsk	0:1063a091a062	131	break;
igorsk	0:1063a091a062	132	}
igorsk	0:1063a091a062	133
igorsk	0:1063a091a062	134	return ERROR;
igorsk	0:1063a091a062	135	}
igorsk	0:1063a091a062	136
igorsk	0:1063a091a062	137	/**
igorsk	0:1063a091a062	138	* @}
igorsk	0:1063a091a062	139	*/
igorsk	0:1063a091a062	140
igorsk	0:1063a091a062	141
igorsk	0:1063a091a062	142	/* Public Functions ----------------------------------------------------------- */
igorsk	0:1063a091a062	143	/** @addtogroup WDT_Public_Functions
igorsk	0:1063a091a062	144	* @{
igorsk	0:1063a091a062	145	*/
igorsk	0:1063a091a062	146
igorsk	0:1063a091a062	147
igorsk	0:1063a091a062	148	/*******************************************************************//
igorsk	0:1063a091a062	149	* @brief Initial for Watchdog function
igorsk	0:1063a091a062	150	* Clock source = RTC ,
igorsk	0:1063a091a062	151	*
igorsk	0:1063a091a062	152	* @param[in] ClkSrc Select clock source
igorsk	0:1063a091a062	153	* - 0:Clock source from Internal RC oscillator
igorsk	0:1063a091a062	154	* - 1: Selects the APB peripheral clock (PCLK)
igorsk	0:1063a091a062	155	* - 2:Selects the RTC oscillator
igorsk	0:1063a091a062	156	*
igorsk	0:1063a091a062	157	* @param[in] WDTMode WDT mode
igorsk	0:1063a091a062	158	* - 0: Use WDT to generate interrupt only
igorsk	0:1063a091a062	159	* - 1:WDT_MODE_RESET
igorsk	0:1063a091a062	160	* @return None
igorsk	0:1063a091a062	161	**********************************************************************/
igorsk	0:1063a091a062	162	void WDT_Init (uint32_t ClkSrc, uint32_t WDTMode)
igorsk	0:1063a091a062	163	{
igorsk	0:1063a091a062	164	CHECK_PARAM(PARAM_WDT_CLK_OPT(ClkSrc));
igorsk	0:1063a091a062	165	CHECK_PARAM(PARAM_WDT_MODE_OPT(WDTMode));
igorsk	0:1063a091a062	166	CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_WDT, CLKPWR_PCLKSEL_CCLK_DIV_4);
igorsk	0:1063a091a062	167
igorsk	0:1063a091a062	168	//Set clock source
igorsk	0:1063a091a062	169	LPC_WDT->WDCLKSEL &= ~WDT_WDCLKSEL_MASK;
igorsk	0:1063a091a062	170	LPC_WDT->WDCLKSEL \|= ClkSrc;
igorsk	0:1063a091a062	171	//Set WDT mode
igorsk	0:1063a091a062	172	if (WDTMode == WDT_MODE_RESET){
igorsk	0:1063a091a062	173	LPC_WDT->WDMOD \|= WDT_WDMOD_WDRESET;
igorsk	0:1063a091a062	174	}
igorsk	0:1063a091a062	175	}
igorsk	0:1063a091a062	176
igorsk	0:1063a091a062	177	/*******************************************************************//
igorsk	0:1063a091a062	178	* @brief Start WDT activity with given timeout value
igorsk	0:1063a091a062	179	* @param[in] TimeOut WDT reset after timeout if it is not feed
igorsk	0:1063a091a062	180	* @return None
igorsk	0:1063a091a062	181	**********************************************************************/
igorsk	0:1063a091a062	182	void WDT_Start(uint32_t TimeOut)
igorsk	0:1063a091a062	183	{
igorsk	0:1063a091a062	184	uint32_t ClkSrc;
igorsk	0:1063a091a062	185
igorsk	0:1063a091a062	186	ClkSrc = LPC_WDT->WDCLKSEL;
igorsk	0:1063a091a062	187	ClkSrc &=WDT_WDCLKSEL_MASK;
igorsk	0:1063a091a062	188	WDT_SetTimeOut(ClkSrc,TimeOut);
igorsk	0:1063a091a062	189	//enable watchdog
igorsk	0:1063a091a062	190	LPC_WDT->WDMOD \|= WDT_WDMOD_WDEN;
igorsk	0:1063a091a062	191	WDT_Feed();
igorsk	0:1063a091a062	192	}
igorsk	0:1063a091a062	193
igorsk	0:1063a091a062	194	/******************************************************************//
igorsk	0:1063a091a062	195	* @brief Read WDT Time out flag
igorsk	0:1063a091a062	196	* @param[in] None
igorsk	0:1063a091a062	197	* @return Time out flag status of WDT
igorsk	0:1063a091a062	198	*********************************************************************/
igorsk	0:1063a091a062	199	FlagStatus WDT_ReadTimeOutFlag (void)
igorsk	0:1063a091a062	200	{
igorsk	0:1063a091a062	201	return ((LPC_WDT->WDMOD & WDT_WDMOD_WDTOF) != 0) ? SET : RESET;
igorsk	0:1063a091a062	202	}
igorsk	0:1063a091a062	203
igorsk	0:1063a091a062	204	/******************************************************************//
igorsk	0:1063a091a062	205	* @brief Clear WDT Time out flag
igorsk	0:1063a091a062	206	* @param[in] None
igorsk	0:1063a091a062	207	* @return None
igorsk	0:1063a091a062	208	*********************************************************************/
igorsk	0:1063a091a062	209	void WDT_ClrTimeOutFlag (void)
igorsk	0:1063a091a062	210	{
igorsk	0:1063a091a062	211	LPC_WDT->WDMOD &=~WDT_WDMOD_WDTOF;
igorsk	0:1063a091a062	212	}
igorsk	0:1063a091a062	213
igorsk	0:1063a091a062	214	/******************************************************************//
igorsk	0:1063a091a062	215	* @brief Update WDT timeout value and feed
igorsk	0:1063a091a062	216	* @param[in] TimeOut TimeOut value to be updated
igorsk	0:1063a091a062	217	* @return None
igorsk	0:1063a091a062	218	*********************************************************************/
igorsk	0:1063a091a062	219	void WDT_UpdateTimeOut ( uint32_t TimeOut)
igorsk	0:1063a091a062	220	{
igorsk	0:1063a091a062	221	uint32_t ClkSrc;
igorsk	0:1063a091a062	222	ClkSrc = LPC_WDT->WDCLKSEL;
igorsk	0:1063a091a062	223	ClkSrc &=WDT_WDCLKSEL_MASK;
igorsk	0:1063a091a062	224	WDT_SetTimeOut(ClkSrc,TimeOut);
igorsk	0:1063a091a062	225	WDT_Feed();
igorsk	0:1063a091a062	226	}
igorsk	0:1063a091a062	227
igorsk	0:1063a091a062	228
igorsk	0:1063a091a062	229	/******************************************************************//
igorsk	0:1063a091a062	230	* @brief After set WDTEN, call this function to start Watchdog
igorsk	0:1063a091a062	231	* or reload the Watchdog timer
igorsk	0:1063a091a062	232	* @param[in] None
igorsk	0:1063a091a062	233	*
igorsk	0:1063a091a062	234	* @return None
igorsk	0:1063a091a062	235	*********************************************************************/
igorsk	0:1063a091a062	236	void WDT_Feed (void)
igorsk	0:1063a091a062	237	{
igorsk	0:1063a091a062	238	// Disable irq interrupt
igorsk	0:1063a091a062	239	__disable_irq();
igorsk	0:1063a091a062	240	LPC_WDT->WDFEED = 0xAA;
igorsk	0:1063a091a062	241	LPC_WDT->WDFEED = 0x55;
igorsk	0:1063a091a062	242	// Then enable irq interrupt
igorsk	0:1063a091a062	243	__enable_irq();
igorsk	0:1063a091a062	244	}
igorsk	0:1063a091a062	245
igorsk	0:1063a091a062	246	/******************************************************************//
igorsk	0:1063a091a062	247	* @brief Get the current value of WDT
igorsk	0:1063a091a062	248	* @param[in] None
igorsk	0:1063a091a062	249	* @return current value of WDT
igorsk	0:1063a091a062	250	*********************************************************************/
igorsk	0:1063a091a062	251	uint32_t WDT_GetCurrentCount(void)
igorsk	0:1063a091a062	252	{
igorsk	0:1063a091a062	253	return LPC_WDT->WDTV;
igorsk	0:1063a091a062	254	}
igorsk	0:1063a091a062	255
igorsk	0:1063a091a062	256	/**
igorsk	0:1063a091a062	257	* @}
igorsk	0:1063a091a062	258	*/
igorsk	0:1063a091a062	259
igorsk	0:1063a091a062	260	#endif /* _WDT */
igorsk	0:1063a091a062	261
igorsk	0:1063a091a062	262	/**
igorsk	0:1063a091a062	263	* @}
igorsk	0:1063a091a062	264	*/
igorsk	0:1063a091a062	265
igorsk	0:1063a091a062	266	/* --------------------------------- End Of File ------------------------------ */

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	17 Feb 2010
Imports:	121
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	5

source/lpc17xx_wdt.c@0:1063a091a062, 2010-02-17 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning