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The common folder libraries from keil LPC11Uxx code bundle

timer16.c@0:05d110ee258e, 2012-05-27 (annotated)

Committer:: alexan_e
Date:: Sun May 27 23:59:30 2012 +0000
Revision:: 0:05d110ee258e

Who changed what in which revision?

User	Revision	Line number	New contents of line
alexan_e	0:05d110ee258e	1	/****************************************************************************
alexan_e	0:05d110ee258e	2	* $Id:: timer16.c 9190 2012-02-16 20:59:45Z nxp41306 $
alexan_e	0:05d110ee258e	3	* Project: NXP LPC11Uxx 16-bit timer example
alexan_e	0:05d110ee258e	4	*
alexan_e	0:05d110ee258e	5	* Description:
alexan_e	0:05d110ee258e	6	* This file contains 16-bit timer code example which include timer
alexan_e	0:05d110ee258e	7	* initialization, timer interrupt handler, and related APIs for
alexan_e	0:05d110ee258e	8	* timer setup.
alexan_e	0:05d110ee258e	9	*
alexan_e	0:05d110ee258e	10	****************************************************************************
alexan_e	0:05d110ee258e	11	* Software that is described herein is for illustrative purposes only
alexan_e	0:05d110ee258e	12	* which provides customers with programming information regarding the
alexan_e	0:05d110ee258e	13	* products. This software is supplied "AS IS" without any warranties.
alexan_e	0:05d110ee258e	14	* NXP Semiconductors assumes no responsibility or liability for the
alexan_e	0:05d110ee258e	15	* use of the software, conveys no license or title under any patent,
alexan_e	0:05d110ee258e	16	* copyright, or mask work right to the product. NXP Semiconductors
alexan_e	0:05d110ee258e	17	* reserves the right to make changes in the software without
alexan_e	0:05d110ee258e	18	* notification. NXP Semiconductors also make no representation or
alexan_e	0:05d110ee258e	19	* warranty that such application will be suitable for the specified
alexan_e	0:05d110ee258e	20	* use without further testing or modification.
alexan_e	0:05d110ee258e	21
alexan_e	0:05d110ee258e	22	* Permission to use, copy, modify, and distribute this software and its
alexan_e	0:05d110ee258e	23	* documentation is hereby granted, under NXP Semiconductors'
alexan_e	0:05d110ee258e	24	* relevant copyright in the software, without fee, provided that it
alexan_e	0:05d110ee258e	25	* is used in conjunction with NXP Semiconductors microcontrollers. This
alexan_e	0:05d110ee258e	26	* copyright, permission, and disclaimer notice must appear in all copies of
alexan_e	0:05d110ee258e	27	* this code.
alexan_e	0:05d110ee258e	28
alexan_e	0:05d110ee258e	29	****************************************************************************/
alexan_e	0:05d110ee258e	30
alexan_e	0:05d110ee258e	31	#include "LPC11Uxx.h"
alexan_e	0:05d110ee258e	32	#include "timer16.h"
alexan_e	0:05d110ee258e	33	#include "nmi.h"
alexan_e	0:05d110ee258e	34
alexan_e	0:05d110ee258e	35	volatile uint32_t timer16_0_counter[2] = {0,0};
alexan_e	0:05d110ee258e	36	volatile uint32_t timer16_1_counter[2] = {0,0};
alexan_e	0:05d110ee258e	37	volatile uint32_t timer16_0_capture[2] = {0,0};
alexan_e	0:05d110ee258e	38	volatile uint32_t timer16_1_capture[2] = {0,0};
alexan_e	0:05d110ee258e	39	volatile uint32_t timer16_0_period = 0;
alexan_e	0:05d110ee258e	40	volatile uint32_t timer16_1_period = 0;
alexan_e	0:05d110ee258e	41
alexan_e	0:05d110ee258e	42	/*****************************************************************************
alexan_e	0:05d110ee258e	43	** Function name: delayMs
alexan_e	0:05d110ee258e	44	**
alexan_e	0:05d110ee258e	45	** Descriptions: Start the timer delay in milo seconds
alexan_e	0:05d110ee258e	46	** until elapsed
alexan_e	0:05d110ee258e	47	**
alexan_e	0:05d110ee258e	48	** parameters: timer number, Delay value in milo second
alexan_e	0:05d110ee258e	49	**
alexan_e	0:05d110ee258e	50	** Returned value: None
alexan_e	0:05d110ee258e	51	**
alexan_e	0:05d110ee258e	52	*****************************************************************************/
alexan_e	0:05d110ee258e	53	void delayMs(uint8_t timer_num, uint32_t delayInMs)
alexan_e	0:05d110ee258e	54	{
alexan_e	0:05d110ee258e	55	if (timer_num == 0)
alexan_e	0:05d110ee258e	56	{
alexan_e	0:05d110ee258e	57	/*
alexan_e	0:05d110ee258e	58	* setup timer #0 for delay
alexan_e	0:05d110ee258e	59	*/
alexan_e	0:05d110ee258e	60	LPC_CT16B0->TCR = 0x02; /* reset timer */
alexan_e	0:05d110ee258e	61	LPC_CT16B0->PR = 0x00; /* set prescaler to zero */
alexan_e	0:05d110ee258e	62	LPC_CT16B0->MR0 = delayInMs * (SystemCoreClock / 1000);
alexan_e	0:05d110ee258e	63	LPC_CT16B0->IR = 0xff; /* reset all interrrupts */
alexan_e	0:05d110ee258e	64	LPC_CT16B0->MCR = 0x04; /* stop timer on match */
alexan_e	0:05d110ee258e	65	LPC_CT16B0->TCR = 0x01; /* start timer */
alexan_e	0:05d110ee258e	66	/* wait until delay time has elapsed */
alexan_e	0:05d110ee258e	67	while (LPC_CT16B0->TCR & 0x01);
alexan_e	0:05d110ee258e	68	}
alexan_e	0:05d110ee258e	69	else if (timer_num == 1)
alexan_e	0:05d110ee258e	70	{
alexan_e	0:05d110ee258e	71	/*
alexan_e	0:05d110ee258e	72	* setup timer #1 for delay
alexan_e	0:05d110ee258e	73	*/
alexan_e	0:05d110ee258e	74	LPC_CT16B1->TCR = 0x02; /* reset timer */
alexan_e	0:05d110ee258e	75	LPC_CT16B1->PR = 0x00; /* set prescaler to zero */
alexan_e	0:05d110ee258e	76	LPC_CT16B1->MR0 = delayInMs * (SystemCoreClock / 1000);
alexan_e	0:05d110ee258e	77	LPC_CT16B1->IR = 0xff; /* reset all interrrupts */
alexan_e	0:05d110ee258e	78	LPC_CT16B1->MCR = 0x04; /* stop timer on match */
alexan_e	0:05d110ee258e	79	LPC_CT16B1->TCR = 0x01; /* start timer */
alexan_e	0:05d110ee258e	80	/* wait until delay time has elapsed */
alexan_e	0:05d110ee258e	81	while (LPC_CT16B1->TCR & 0x01);
alexan_e	0:05d110ee258e	82	}
alexan_e	0:05d110ee258e	83	return;
alexan_e	0:05d110ee258e	84	}
alexan_e	0:05d110ee258e	85
alexan_e	0:05d110ee258e	86	/******************************************************************************
alexan_e	0:05d110ee258e	87	** Function name: TIMER_0_IRQHandler
alexan_e	0:05d110ee258e	88	**
alexan_e	0:05d110ee258e	89	** Descriptions: Timer/CounterX and CaptureX interrupt handler
alexan_e	0:05d110ee258e	90	**
alexan_e	0:05d110ee258e	91	** parameters: None
alexan_e	0:05d110ee258e	92	** Returned value: None
alexan_e	0:05d110ee258e	93	**
alexan_e	0:05d110ee258e	94	******************************************************************************/
alexan_e	0:05d110ee258e	95	extern "C" void TIMER16_0_IRQHandler(void)
alexan_e	0:05d110ee258e	96	{
alexan_e	0:05d110ee258e	97	if ( LPC_CT16B0->IR & (0x1<<0) )
alexan_e	0:05d110ee258e	98	{
alexan_e	0:05d110ee258e	99	LPC_CT16B0->IR = 0x1<<0; /* clear interrupt flag */
alexan_e	0:05d110ee258e	100	timer16_0_counter[0]++;
alexan_e	0:05d110ee258e	101	}
alexan_e	0:05d110ee258e	102	if ( LPC_CT16B0->IR & (0x1<<1) )
alexan_e	0:05d110ee258e	103	{
alexan_e	0:05d110ee258e	104	LPC_CT16B0->IR = 0x1<<1; /* clear interrupt flag */
alexan_e	0:05d110ee258e	105	timer16_0_counter[1]++;
alexan_e	0:05d110ee258e	106	}
alexan_e	0:05d110ee258e	107	if ( LPC_CT16B0->IR & (0x1<<4) )
alexan_e	0:05d110ee258e	108	{
alexan_e	0:05d110ee258e	109	LPC_CT16B0->IR = 0x1<<4; /* clear interrupt flag */
alexan_e	0:05d110ee258e	110	timer16_0_capture[0]++;
alexan_e	0:05d110ee258e	111	}
alexan_e	0:05d110ee258e	112	if ( LPC_CT16B0->IR & (0x1<<5) )
alexan_e	0:05d110ee258e	113	{
alexan_e	0:05d110ee258e	114	LPC_CT16B0->IR = 0x1<<5; /* clear interrupt flag */
alexan_e	0:05d110ee258e	115	timer16_0_capture[1]++;
alexan_e	0:05d110ee258e	116	}
alexan_e	0:05d110ee258e	117	return;
alexan_e	0:05d110ee258e	118	}
alexan_e	0:05d110ee258e	119
alexan_e	0:05d110ee258e	120	/******************************************************************************
alexan_e	0:05d110ee258e	121	** Function name: TIMER_1_IRQHandler
alexan_e	0:05d110ee258e	122	**
alexan_e	0:05d110ee258e	123	** Descriptions: Timer/CounterX and CaptureX interrupt handler
alexan_e	0:05d110ee258e	124	**
alexan_e	0:05d110ee258e	125	** parameters: None
alexan_e	0:05d110ee258e	126	** Returned value: None
alexan_e	0:05d110ee258e	127	**
alexan_e	0:05d110ee258e	128	******************************************************************************/
alexan_e	0:05d110ee258e	129	extern "C" void TIMER16_1_IRQHandler(void)
alexan_e	0:05d110ee258e	130	{
alexan_e	0:05d110ee258e	131	if ( LPC_CT16B1->IR & (0x1<<0) )
alexan_e	0:05d110ee258e	132	{
alexan_e	0:05d110ee258e	133	LPC_CT16B1->IR = 0x1<<0; /* clear interrupt flag */
alexan_e	0:05d110ee258e	134	timer16_1_counter[0]++;
alexan_e	0:05d110ee258e	135	}
alexan_e	0:05d110ee258e	136	if ( LPC_CT16B1->IR & (0x1<<1) )
alexan_e	0:05d110ee258e	137	{
alexan_e	0:05d110ee258e	138	LPC_CT16B1->IR = 0x1<<1; /* clear interrupt flag */
alexan_e	0:05d110ee258e	139	timer16_1_counter[1]++;
alexan_e	0:05d110ee258e	140	}
alexan_e	0:05d110ee258e	141	if ( LPC_CT16B1->IR & (0x1<<4) )
alexan_e	0:05d110ee258e	142	{
alexan_e	0:05d110ee258e	143	LPC_CT16B1->IR = 0x1<<4; /* clear interrupt flag */
alexan_e	0:05d110ee258e	144	timer16_1_capture[0]++;
alexan_e	0:05d110ee258e	145	}
alexan_e	0:05d110ee258e	146	if ( LPC_CT16B1->IR & (0x1<<5) )
alexan_e	0:05d110ee258e	147	{
alexan_e	0:05d110ee258e	148	LPC_CT16B1->IR = 0x1<<5; /* clear interrupt flag */
alexan_e	0:05d110ee258e	149	timer16_1_capture[1]++;
alexan_e	0:05d110ee258e	150	}
alexan_e	0:05d110ee258e	151	return;
alexan_e	0:05d110ee258e	152	}
alexan_e	0:05d110ee258e	153
alexan_e	0:05d110ee258e	154	/******************************************************************************
alexan_e	0:05d110ee258e	155	** Function name: enable_timer
alexan_e	0:05d110ee258e	156	**
alexan_e	0:05d110ee258e	157	** Descriptions: Enable timer
alexan_e	0:05d110ee258e	158	**
alexan_e	0:05d110ee258e	159	** parameters: timer number: 0 or 1
alexan_e	0:05d110ee258e	160	** Returned value: None
alexan_e	0:05d110ee258e	161	**
alexan_e	0:05d110ee258e	162	******************************************************************************/
alexan_e	0:05d110ee258e	163	void enable_timer16(uint8_t timer_num)
alexan_e	0:05d110ee258e	164	{
alexan_e	0:05d110ee258e	165	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	166	{
alexan_e	0:05d110ee258e	167	LPC_CT16B0->TCR = 1;
alexan_e	0:05d110ee258e	168	}
alexan_e	0:05d110ee258e	169	else
alexan_e	0:05d110ee258e	170	{
alexan_e	0:05d110ee258e	171	LPC_CT16B1->TCR = 1;
alexan_e	0:05d110ee258e	172	}
alexan_e	0:05d110ee258e	173	return;
alexan_e	0:05d110ee258e	174	}
alexan_e	0:05d110ee258e	175
alexan_e	0:05d110ee258e	176	/******************************************************************************
alexan_e	0:05d110ee258e	177	** Function name: disable_timer
alexan_e	0:05d110ee258e	178	**
alexan_e	0:05d110ee258e	179	** Descriptions: Disable timer
alexan_e	0:05d110ee258e	180	**
alexan_e	0:05d110ee258e	181	** parameters: timer number: 0 or 1
alexan_e	0:05d110ee258e	182	** Returned value: None
alexan_e	0:05d110ee258e	183	**
alexan_e	0:05d110ee258e	184	******************************************************************************/
alexan_e	0:05d110ee258e	185	void disable_timer16(uint8_t timer_num)
alexan_e	0:05d110ee258e	186	{
alexan_e	0:05d110ee258e	187	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	188	{
alexan_e	0:05d110ee258e	189	LPC_CT16B0->TCR = 0;
alexan_e	0:05d110ee258e	190	}
alexan_e	0:05d110ee258e	191	else
alexan_e	0:05d110ee258e	192	{
alexan_e	0:05d110ee258e	193	LPC_CT16B1->TCR = 0;
alexan_e	0:05d110ee258e	194	}
alexan_e	0:05d110ee258e	195	return;
alexan_e	0:05d110ee258e	196	}
alexan_e	0:05d110ee258e	197
alexan_e	0:05d110ee258e	198	/******************************************************************************
alexan_e	0:05d110ee258e	199	** Function name: reset_timer
alexan_e	0:05d110ee258e	200	**
alexan_e	0:05d110ee258e	201	** Descriptions: Reset timer
alexan_e	0:05d110ee258e	202	**
alexan_e	0:05d110ee258e	203	** parameters: timer number: 0 or 1
alexan_e	0:05d110ee258e	204	** Returned value: None
alexan_e	0:05d110ee258e	205	**
alexan_e	0:05d110ee258e	206	******************************************************************************/
alexan_e	0:05d110ee258e	207	void reset_timer16(uint8_t timer_num)
alexan_e	0:05d110ee258e	208	{
alexan_e	0:05d110ee258e	209	uint32_t regVal;
alexan_e	0:05d110ee258e	210
alexan_e	0:05d110ee258e	211	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	212	{
alexan_e	0:05d110ee258e	213	regVal = LPC_CT16B0->TCR;
alexan_e	0:05d110ee258e	214	regVal \|= 0x02;
alexan_e	0:05d110ee258e	215	LPC_CT16B0->TCR = regVal;
alexan_e	0:05d110ee258e	216	}
alexan_e	0:05d110ee258e	217	else
alexan_e	0:05d110ee258e	218	{
alexan_e	0:05d110ee258e	219	regVal = LPC_CT16B1->TCR;
alexan_e	0:05d110ee258e	220	regVal \|= 0x02;
alexan_e	0:05d110ee258e	221	LPC_CT16B1->TCR = regVal;
alexan_e	0:05d110ee258e	222	}
alexan_e	0:05d110ee258e	223	return;
alexan_e	0:05d110ee258e	224	}
alexan_e	0:05d110ee258e	225
alexan_e	0:05d110ee258e	226	/******************************************************************************
alexan_e	0:05d110ee258e	227	** Function name: Set_timer_capture
alexan_e	0:05d110ee258e	228	**
alexan_e	0:05d110ee258e	229	** Descriptions: set timer capture based on LOC number.
alexan_e	0:05d110ee258e	230	**
alexan_e	0:05d110ee258e	231	** parameters: timer number and location number
alexan_e	0:05d110ee258e	232	** Returned value: None
alexan_e	0:05d110ee258e	233	**
alexan_e	0:05d110ee258e	234	******************************************************************************/
alexan_e	0:05d110ee258e	235	void set_timer16_capture(uint8_t timer_num, uint8_t location )
alexan_e	0:05d110ee258e	236	{
alexan_e	0:05d110ee258e	237	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	238	{
alexan_e	0:05d110ee258e	239	/* Timer0_16 I/O config */
alexan_e	0:05d110ee258e	240	if ( location == 0 )
alexan_e	0:05d110ee258e	241	{
alexan_e	0:05d110ee258e	242	LPC_IOCON->PIO1_16 &= ~0x07;
alexan_e	0:05d110ee258e	243	LPC_IOCON->PIO1_16 \|= 0x02; /* Timer0_16 CAP0 */
alexan_e	0:05d110ee258e	244	// LPC_IOCON->PIO1_17 &= ~0x07;
alexan_e	0:05d110ee258e	245	// LPC_IOCON->PIO1_17 \|= 0x01; /* Timer0_16 CAP1 */
alexan_e	0:05d110ee258e	246	}
alexan_e	0:05d110ee258e	247	else if ( location == 1 )
alexan_e	0:05d110ee258e	248	{
alexan_e	0:05d110ee258e	249	LPC_IOCON->PIO0_2 &= ~0x07;
alexan_e	0:05d110ee258e	250	LPC_IOCON->PIO0_2 \|= 0x02; /* Timer0_16 CAP0 */
alexan_e	0:05d110ee258e	251	}
alexan_e	0:05d110ee258e	252	else
alexan_e	0:05d110ee258e	253	{
alexan_e	0:05d110ee258e	254	while ( 1 ); /* Fatal location number error */
alexan_e	0:05d110ee258e	255	}
alexan_e	0:05d110ee258e	256	}
alexan_e	0:05d110ee258e	257	else
alexan_e	0:05d110ee258e	258	{
alexan_e	0:05d110ee258e	259	/* Timer1_16 I/O config */
alexan_e	0:05d110ee258e	260	if ( location == 0 )
alexan_e	0:05d110ee258e	261	{
alexan_e	0:05d110ee258e	262	LPC_IOCON->PIO0_20 &= ~0x07; /* Timer1_16 I/O config */
alexan_e	0:05d110ee258e	263	LPC_IOCON->PIO0_20 \|= 0x01; /* Timer1_16 CAP0 */
alexan_e	0:05d110ee258e	264	// LPC_IOCON->PIO1_18 &= ~0x07;
alexan_e	0:05d110ee258e	265	// LPC_IOCON->PIO1_18 \|= 0x01; /* Timer1_16 CAP1 */
alexan_e	0:05d110ee258e	266	}
alexan_e	0:05d110ee258e	267	else
alexan_e	0:05d110ee258e	268	{
alexan_e	0:05d110ee258e	269	while ( 1 ); /* Fatal location number error */
alexan_e	0:05d110ee258e	270	}
alexan_e	0:05d110ee258e	271	}
alexan_e	0:05d110ee258e	272	return;
alexan_e	0:05d110ee258e	273	}
alexan_e	0:05d110ee258e	274
alexan_e	0:05d110ee258e	275	/******************************************************************************
alexan_e	0:05d110ee258e	276	** Function name: Set_timer_match
alexan_e	0:05d110ee258e	277	**
alexan_e	0:05d110ee258e	278	** Descriptions: set timer match based on LOC number.
alexan_e	0:05d110ee258e	279	**
alexan_e	0:05d110ee258e	280	** parameters: timer number, match enable, and location number
alexan_e	0:05d110ee258e	281	** Returned value: None
alexan_e	0:05d110ee258e	282	**
alexan_e	0:05d110ee258e	283	******************************************************************************/
alexan_e	0:05d110ee258e	284	void set_timer16_match(uint8_t timer_num, uint8_t match_enable, uint8_t location)
alexan_e	0:05d110ee258e	285	{
alexan_e	0:05d110ee258e	286	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	287	{
alexan_e	0:05d110ee258e	288	if ( match_enable & 0x01 )
alexan_e	0:05d110ee258e	289	{
alexan_e	0:05d110ee258e	290	/* Timer0_16 I/O config */
alexan_e	0:05d110ee258e	291	if ( location == 0 )
alexan_e	0:05d110ee258e	292	{
alexan_e	0:05d110ee258e	293	LPC_IOCON->PIO0_8 &= ~0x07;
alexan_e	0:05d110ee258e	294	LPC_IOCON->PIO0_8 \|= 0x02; /* Timer0_16 MAT0 */
alexan_e	0:05d110ee258e	295	}
alexan_e	0:05d110ee258e	296	else if ( location == 1 )
alexan_e	0:05d110ee258e	297	{
alexan_e	0:05d110ee258e	298	LPC_IOCON->PIO1_13 &= ~0x07;
alexan_e	0:05d110ee258e	299	LPC_IOCON->PIO1_13 \|= 0x02; /* Timer0_16 MAT0 */
alexan_e	0:05d110ee258e	300	}
alexan_e	0:05d110ee258e	301	}
alexan_e	0:05d110ee258e	302	if ( match_enable & 0x02 )
alexan_e	0:05d110ee258e	303	{
alexan_e	0:05d110ee258e	304	/* Timer0_16 I/O config */
alexan_e	0:05d110ee258e	305	if ( location == 0 )
alexan_e	0:05d110ee258e	306	{
alexan_e	0:05d110ee258e	307	LPC_IOCON->PIO0_9 &= ~0x07;
alexan_e	0:05d110ee258e	308	LPC_IOCON->PIO0_9 \|= 0x02; /* Timer0_16 MAT1 */
alexan_e	0:05d110ee258e	309	}
alexan_e	0:05d110ee258e	310	else if ( location == 1 )
alexan_e	0:05d110ee258e	311	{
alexan_e	0:05d110ee258e	312	LPC_IOCON->PIO1_14 &= ~0x07;
alexan_e	0:05d110ee258e	313	LPC_IOCON->PIO1_14 \|= 0x02; /* Timer0_16 MAT1 */
alexan_e	0:05d110ee258e	314	}
alexan_e	0:05d110ee258e	315	}
alexan_e	0:05d110ee258e	316	if ( match_enable & 0x04 )
alexan_e	0:05d110ee258e	317	{
alexan_e	0:05d110ee258e	318	/* Timer0_16 I/O config */
alexan_e	0:05d110ee258e	319	if ( location == 0 )
alexan_e	0:05d110ee258e	320	{
alexan_e	0:05d110ee258e	321	#ifdef __SWD_DISABLED
alexan_e	0:05d110ee258e	322	LPC_IOCON->SWCLK_PIO0_10 &= ~0x07;
alexan_e	0:05d110ee258e	323	LPC_IOCON->SWCLK_PIO0_10 \|= 0x03; /* Timer0_16 MAT2 */
alexan_e	0:05d110ee258e	324	#endif
alexan_e	0:05d110ee258e	325	}
alexan_e	0:05d110ee258e	326	else if ( location == 1 )
alexan_e	0:05d110ee258e	327	{
alexan_e	0:05d110ee258e	328	LPC_IOCON->PIO1_15 &= ~0x07;
alexan_e	0:05d110ee258e	329	LPC_IOCON->PIO1_15 \|= 0x02; /* Timer0_16 MAT0 */
alexan_e	0:05d110ee258e	330	}
alexan_e	0:05d110ee258e	331	}
alexan_e	0:05d110ee258e	332	}
alexan_e	0:05d110ee258e	333	else if ( timer_num == 1 )
alexan_e	0:05d110ee258e	334	{
alexan_e	0:05d110ee258e	335	if ( match_enable & 0x01 )
alexan_e	0:05d110ee258e	336	{
alexan_e	0:05d110ee258e	337	/* Timer1_16 I/O config */
alexan_e	0:05d110ee258e	338	if ( location == 0 )
alexan_e	0:05d110ee258e	339	{
alexan_e	0:05d110ee258e	340	LPC_IOCON->PIO0_21 &= ~0x07;
alexan_e	0:05d110ee258e	341	LPC_IOCON->PIO0_21 \|= 0x01; /* Timer1_16 MAT0 */
alexan_e	0:05d110ee258e	342	}
alexan_e	0:05d110ee258e	343	}
alexan_e	0:05d110ee258e	344	if ( match_enable & 0x02 )
alexan_e	0:05d110ee258e	345	{
alexan_e	0:05d110ee258e	346	/* Timer1_16 I/O config */
alexan_e	0:05d110ee258e	347	if ( location == 0 )
alexan_e	0:05d110ee258e	348	{
alexan_e	0:05d110ee258e	349	LPC_IOCON->PIO0_22 &= ~0x07;
alexan_e	0:05d110ee258e	350	LPC_IOCON->PIO0_22 \|= 0x02; /* Timer1_16 MAT1 */
alexan_e	0:05d110ee258e	351	}
alexan_e	0:05d110ee258e	352	else if ( location == 1 )
alexan_e	0:05d110ee258e	353	{
alexan_e	0:05d110ee258e	354	LPC_IOCON->PIO1_23 &= ~0x07;
alexan_e	0:05d110ee258e	355	LPC_IOCON->PIO1_23 \|= 0x01; /* Timer1_16 MAT0 */
alexan_e	0:05d110ee258e	356	}
alexan_e	0:05d110ee258e	357	}
alexan_e	0:05d110ee258e	358	}
alexan_e	0:05d110ee258e	359	return;
alexan_e	0:05d110ee258e	360	}
alexan_e	0:05d110ee258e	361
alexan_e	0:05d110ee258e	362	/******************************************************************************
alexan_e	0:05d110ee258e	363	** Function name: init_timer
alexan_e	0:05d110ee258e	364	**
alexan_e	0:05d110ee258e	365	** Descriptions: Initialize timer, set timer interval, reset timer,
alexan_e	0:05d110ee258e	366	** install timer interrupt handler
alexan_e	0:05d110ee258e	367	**
alexan_e	0:05d110ee258e	368	** parameters: timer number and timer interval
alexan_e	0:05d110ee258e	369	** Returned value: None
alexan_e	0:05d110ee258e	370	**
alexan_e	0:05d110ee258e	371	******************************************************************************/
alexan_e	0:05d110ee258e	372	void init_timer16(uint8_t timer_num, uint32_t TimerInterval)
alexan_e	0:05d110ee258e	373	{
alexan_e	0:05d110ee258e	374	if ( timer_num == 0 )
alexan_e	0:05d110ee258e	375	{
alexan_e	0:05d110ee258e	376	/* Some of the I/O pins need to be clearfully planned if
alexan_e	0:05d110ee258e	377	you use below module because JTAG and TIMER CAP/MAT pins are muxed. */
alexan_e	0:05d110ee258e	378	LPC_SYSCON->SYSAHBCLKCTRL \|= (1<<7);
alexan_e	0:05d110ee258e	379
alexan_e	0:05d110ee258e	380	LPC_CT16B0->MR0 = TimerInterval;
alexan_e	0:05d110ee258e	381	LPC_CT16B0->MR1 = TimerInterval;
alexan_e	0:05d110ee258e	382	#if TIMER_MATCH
alexan_e	0:05d110ee258e	383	timer16_0_counter[0] = 0;
alexan_e	0:05d110ee258e	384	timer16_0_counter[1] = 0;
alexan_e	0:05d110ee258e	385	set_timer16_match(timer_num, 0x07, 0);
alexan_e	0:05d110ee258e	386	LPC_CT16B0->EMR &= ~(0xFF<<4);
alexan_e	0:05d110ee258e	387	LPC_CT16B0->EMR \|= ((0x3<<4)\|(0x3<<6)\|(0x3<<8));
alexan_e	0:05d110ee258e	388	#else
alexan_e	0:05d110ee258e	389	timer16_0_capture[0] = 0;
alexan_e	0:05d110ee258e	390	timer16_0_capture[1] = 0;
alexan_e	0:05d110ee258e	391	set_timer16_capture(timer_num, 0);
alexan_e	0:05d110ee258e	392	/* Capture 0 and 1 on rising edge, interrupt enable. */
alexan_e	0:05d110ee258e	393	LPC_CT16B0->CCR = (0x5<<0)\|(0x5<<3);
alexan_e	0:05d110ee258e	394	#endif
alexan_e	0:05d110ee258e	395	LPC_CT16B0->MCR = (0x3<<0)\|(0x3<<3); /* Interrupt and Reset on MR0 and MR1 */
alexan_e	0:05d110ee258e	396
alexan_e	0:05d110ee258e	397	/* Enable the TIMER0 Interrupt */
alexan_e	0:05d110ee258e	398	#if NMI_ENABLED
alexan_e	0:05d110ee258e	399	NVIC_DisableIRQ(TIMER_16_0_IRQn);
alexan_e	0:05d110ee258e	400	NMI_Init( TIMER_16_0_IRQn );
alexan_e	0:05d110ee258e	401	#else
alexan_e	0:05d110ee258e	402	NVIC_EnableIRQ(TIMER_16_0_IRQn);
alexan_e	0:05d110ee258e	403	#endif
alexan_e	0:05d110ee258e	404	}
alexan_e	0:05d110ee258e	405	else if ( timer_num == 1 )
alexan_e	0:05d110ee258e	406	{
alexan_e	0:05d110ee258e	407	/* Some of the I/O pins need to be clearfully planned if
alexan_e	0:05d110ee258e	408	you use below module because JTAG and TIMER CAP/MAT pins are muxed. */
alexan_e	0:05d110ee258e	409	LPC_SYSCON->SYSAHBCLKCTRL \|= (1<<8);
alexan_e	0:05d110ee258e	410	LPC_CT16B1->MR0 = TimerInterval;
alexan_e	0:05d110ee258e	411	LPC_CT16B1->MR1 = TimerInterval;
alexan_e	0:05d110ee258e	412	#if TIMER_MATCH
alexan_e	0:05d110ee258e	413	timer16_1_counter[0] = 0;
alexan_e	0:05d110ee258e	414	timer16_1_counter[1] = 0;
alexan_e	0:05d110ee258e	415	set_timer16_match(timer_num, 0x07, 0);
alexan_e	0:05d110ee258e	416	LPC_CT16B1->EMR &= ~(0xFF<<4);
alexan_e	0:05d110ee258e	417	LPC_CT16B1->EMR \|= ((0x3<<4)\|(0x3<<6)\|(0x3<<8));
alexan_e	0:05d110ee258e	418	#else
alexan_e	0:05d110ee258e	419	timer16_1_capture[0] = 0;
alexan_e	0:05d110ee258e	420	timer16_1_capture[1] = 0;
alexan_e	0:05d110ee258e	421	set_timer16_capture(timer_num, 0);
alexan_e	0:05d110ee258e	422	/* Capture 0 and 1 on rising edge, interrupt enable. */
alexan_e	0:05d110ee258e	423	LPC_CT16B1->CCR = (0x5<<0)\|(0x5<<3);
alexan_e	0:05d110ee258e	424	#endif
alexan_e	0:05d110ee258e	425	LPC_CT16B1->MCR = (0x3<<0)\|(0x3<<3); /* Interrupt and Reset on MR0 and MR1 */
alexan_e	0:05d110ee258e	426
alexan_e	0:05d110ee258e	427	/* Enable the TIMER1 Interrupt */
alexan_e	0:05d110ee258e	428	#if NMI_ENABLED
alexan_e	0:05d110ee258e	429	NVIC_DisableIRQ(TIMER_16_1_IRQn);
alexan_e	0:05d110ee258e	430	NMI_Init( TIMER_16_1_IRQn );
alexan_e	0:05d110ee258e	431	#else
alexan_e	0:05d110ee258e	432	NVIC_EnableIRQ(TIMER_16_1_IRQn);
alexan_e	0:05d110ee258e	433	#endif
alexan_e	0:05d110ee258e	434	}
alexan_e	0:05d110ee258e	435	return;
alexan_e	0:05d110ee258e	436	}
alexan_e	0:05d110ee258e	437
alexan_e	0:05d110ee258e	438	/******************************************************************************
alexan_e	0:05d110ee258e	439	** Function name: init_timer16PWM
alexan_e	0:05d110ee258e	440	**
alexan_e	0:05d110ee258e	441	** Descriptions: Initialize timer as PWM
alexan_e	0:05d110ee258e	442	**
alexan_e	0:05d110ee258e	443	** parameters: timer number, period and match enable:
alexan_e	0:05d110ee258e	444	** match_enable[0] = PWM for MAT0
alexan_e	0:05d110ee258e	445	** match_enable[1] = PWM for MAT1
alexan_e	0:05d110ee258e	446	** match_enable[2] = PWM for MAT2
alexan_e	0:05d110ee258e	447	**
alexan_e	0:05d110ee258e	448	** Returned value: None
alexan_e	0:05d110ee258e	449	**
alexan_e	0:05d110ee258e	450	******************************************************************************/
alexan_e	0:05d110ee258e	451	void init_timer16PWM(uint8_t timer_num, uint32_t period, uint8_t match_enable, uint8_t cap_enabled)
alexan_e	0:05d110ee258e	452	{
alexan_e	0:05d110ee258e	453	disable_timer16(timer_num);
alexan_e	0:05d110ee258e	454
alexan_e	0:05d110ee258e	455	if (timer_num == 1)
alexan_e	0:05d110ee258e	456	{
alexan_e	0:05d110ee258e	457	/* Some of the I/O pins need to be clearfully planned if
alexan_e	0:05d110ee258e	458	you use below module because JTAG and TIMER CAP/MAT pins are muxed. */
alexan_e	0:05d110ee258e	459	LPC_SYSCON->SYSAHBCLKCTRL \|= (1<<8);
alexan_e	0:05d110ee258e	460
alexan_e	0:05d110ee258e	461	/* Setup the external match register */
alexan_e	0:05d110ee258e	462	LPC_CT16B1->EMR = (1<<EMC3)\|(1<<EMC2)\|(1<<EMC1)\|(2<<EMC0)\|(1<<3)\|(match_enable);
alexan_e	0:05d110ee258e	463
alexan_e	0:05d110ee258e	464	/* Setup the outputs */
alexan_e	0:05d110ee258e	465	/* If match0 is enabled, set the output */
alexan_e	0:05d110ee258e	466	set_timer16_match(timer_num, match_enable, 0 );
alexan_e	0:05d110ee258e	467
alexan_e	0:05d110ee258e	468	/* Enable the selected PWMs and enable Match3 */
alexan_e	0:05d110ee258e	469	LPC_CT16B1->PWMC = (1<<3)\|(match_enable);
alexan_e	0:05d110ee258e	470
alexan_e	0:05d110ee258e	471	/* Setup the match registers */
alexan_e	0:05d110ee258e	472	/* set the period value to a global variable */
alexan_e	0:05d110ee258e	473	timer16_1_period = period;
alexan_e	0:05d110ee258e	474	LPC_CT16B1->MR3 = timer16_1_period;
alexan_e	0:05d110ee258e	475	LPC_CT16B1->MR0 = timer16_1_period/2;
alexan_e	0:05d110ee258e	476	LPC_CT16B1->MR1 = timer16_1_period/2;
alexan_e	0:05d110ee258e	477	LPC_CT16B1->MR2 = timer16_1_period/2;
alexan_e	0:05d110ee258e	478
alexan_e	0:05d110ee258e	479	/* Set match control register */
alexan_e	0:05d110ee258e	480	LPC_CT16B1->MCR = 1<<10;// \| 1<<9; /* Reset on MR3 */
alexan_e	0:05d110ee258e	481
alexan_e	0:05d110ee258e	482	if (cap_enabled)
alexan_e	0:05d110ee258e	483	{
alexan_e	0:05d110ee258e	484	/* Use location 0 for test. */
alexan_e	0:05d110ee258e	485	set_timer16_capture( timer_num, 0 );
alexan_e	0:05d110ee258e	486	LPC_CT16B1->IR = 0xF; /* clear interrupt flag */
alexan_e	0:05d110ee258e	487
alexan_e	0:05d110ee258e	488	/* Set the capture control register */
alexan_e	0:05d110ee258e	489	LPC_CT16B1->CCR = 7;
alexan_e	0:05d110ee258e	490
alexan_e	0:05d110ee258e	491	}
alexan_e	0:05d110ee258e	492	/* Enable the TIMER1 Interrupt */
alexan_e	0:05d110ee258e	493	NVIC_EnableIRQ(TIMER_16_1_IRQn);
alexan_e	0:05d110ee258e	494	}
alexan_e	0:05d110ee258e	495	else
alexan_e	0:05d110ee258e	496	{
alexan_e	0:05d110ee258e	497	LPC_SYSCON->SYSAHBCLKCTRL \|= (1<<7);
alexan_e	0:05d110ee258e	498
alexan_e	0:05d110ee258e	499	/* Setup the external match register */
alexan_e	0:05d110ee258e	500	LPC_CT16B0->EMR = (1<<EMC3)\|(1<<EMC2)\|(1<<EMC1)\|(1<<EMC0)\|(1<<3)\|(match_enable);
alexan_e	0:05d110ee258e	501
alexan_e	0:05d110ee258e	502	/* Setup the outputs */
alexan_e	0:05d110ee258e	503	/* If match0 is enabled, set the output */
alexan_e	0:05d110ee258e	504	set_timer16_match(timer_num, match_enable, 0 );
alexan_e	0:05d110ee258e	505
alexan_e	0:05d110ee258e	506	/* Enable the selected PWMs and enable Match3 */
alexan_e	0:05d110ee258e	507	LPC_CT16B0->PWMC = (1<<3)\|(match_enable);
alexan_e	0:05d110ee258e	508
alexan_e	0:05d110ee258e	509	/* Setup the match registers */
alexan_e	0:05d110ee258e	510	/* set the period value to a global variable */
alexan_e	0:05d110ee258e	511	timer16_0_period = period;
alexan_e	0:05d110ee258e	512	LPC_CT16B0->MR3 = timer16_0_period;
alexan_e	0:05d110ee258e	513	LPC_CT16B0->MR0 = timer16_0_period/2;
alexan_e	0:05d110ee258e	514	LPC_CT16B0->MR1 = timer16_0_period/2;
alexan_e	0:05d110ee258e	515	LPC_CT16B0->MR2 = timer16_0_period/2;
alexan_e	0:05d110ee258e	516
alexan_e	0:05d110ee258e	517	/* Set the match control register */
alexan_e	0:05d110ee258e	518	LPC_CT16B0->MCR = 1<<10; /* Reset on MR3 */
alexan_e	0:05d110ee258e	519
alexan_e	0:05d110ee258e	520	/* Enable the TIMER1 Interrupt */
alexan_e	0:05d110ee258e	521	NVIC_EnableIRQ(TIMER_16_0_IRQn);
alexan_e	0:05d110ee258e	522	}
alexan_e	0:05d110ee258e	523	}
alexan_e	0:05d110ee258e	524
alexan_e	0:05d110ee258e	525	/******************************************************************************
alexan_e	0:05d110ee258e	526	** Function name: pwm16_setMatch
alexan_e	0:05d110ee258e	527	**
alexan_e	0:05d110ee258e	528	** Descriptions: Set the pwm16 match values
alexan_e	0:05d110ee258e	529	**
alexan_e	0:05d110ee258e	530	** parameters: timer number, match numner and the value
alexan_e	0:05d110ee258e	531	**
alexan_e	0:05d110ee258e	532	** Returned value: None
alexan_e	0:05d110ee258e	533	**
alexan_e	0:05d110ee258e	534	******************************************************************************/
alexan_e	0:05d110ee258e	535	void setMatch_timer16PWM (uint8_t timer_num, uint8_t match_nr, uint32_t value)
alexan_e	0:05d110ee258e	536	{
alexan_e	0:05d110ee258e	537	if (timer_num)
alexan_e	0:05d110ee258e	538	{
alexan_e	0:05d110ee258e	539	switch (match_nr)
alexan_e	0:05d110ee258e	540	{
alexan_e	0:05d110ee258e	541	case 0:
alexan_e	0:05d110ee258e	542	LPC_CT16B1->MR0 = value;
alexan_e	0:05d110ee258e	543	break;
alexan_e	0:05d110ee258e	544	case 1:
alexan_e	0:05d110ee258e	545	LPC_CT16B1->MR1 = value;
alexan_e	0:05d110ee258e	546	break;
alexan_e	0:05d110ee258e	547	case 2:
alexan_e	0:05d110ee258e	548	LPC_CT16B1->MR2 = value;
alexan_e	0:05d110ee258e	549	break;
alexan_e	0:05d110ee258e	550	case 3:
alexan_e	0:05d110ee258e	551	LPC_CT16B1->MR3 = value;
alexan_e	0:05d110ee258e	552	break;
alexan_e	0:05d110ee258e	553	default:
alexan_e	0:05d110ee258e	554	break;
alexan_e	0:05d110ee258e	555	}
alexan_e	0:05d110ee258e	556	}
alexan_e	0:05d110ee258e	557	else
alexan_e	0:05d110ee258e	558	{
alexan_e	0:05d110ee258e	559	switch (match_nr)
alexan_e	0:05d110ee258e	560	{
alexan_e	0:05d110ee258e	561	case 0:
alexan_e	0:05d110ee258e	562	LPC_CT16B0->MR0 = value;
alexan_e	0:05d110ee258e	563	break;
alexan_e	0:05d110ee258e	564	case 1:
alexan_e	0:05d110ee258e	565	LPC_CT16B0->MR1 = value;
alexan_e	0:05d110ee258e	566	break;
alexan_e	0:05d110ee258e	567	case 2:
alexan_e	0:05d110ee258e	568	LPC_CT16B0->MR2 = value;
alexan_e	0:05d110ee258e	569	break;
alexan_e	0:05d110ee258e	570	case 3:
alexan_e	0:05d110ee258e	571	LPC_CT16B0->MR3 = value;
alexan_e	0:05d110ee258e	572	break;
alexan_e	0:05d110ee258e	573	default:
alexan_e	0:05d110ee258e	574	break;
alexan_e	0:05d110ee258e	575	}
alexan_e	0:05d110ee258e	576	}
alexan_e	0:05d110ee258e	577	}
alexan_e	0:05d110ee258e	578
alexan_e	0:05d110ee258e	579	/******************************************************************************
alexan_e	0:05d110ee258e	580	** End Of File
alexan_e	0:05d110ee258e	581	******************************************************************************/

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Type:	Library
Created:	27 May 2012
Imports:	69
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	5

timer16.c@0:05d110ee258e, 2012-05-27 (annotated)

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