LPCOpen Platform  v1.03
LPCOpen Platform for NXP LPC Microcontrollers
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ritimer.c
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1 /*
2  * @brief RITimer example
3  *
4  * @note
5  * Copyright(C) NXP Semiconductors, 2012
6  * All rights reserved.
7  *
8  * @par
9  * Software that is described herein is for illustrative purposes only
10  * which provides customers with programming information regarding the
11  * LPC products. This software is supplied "AS IS" without any warranties of
12  * any kind, and NXP Semiconductors and its licensor disclaim any and
13  * all warranties, express or implied, including all implied warranties of
14  * merchantability, fitness for a particular purpose and non-infringement of
15  * intellectual property rights. NXP Semiconductors assumes no responsibility
16  * or liability for the use of the software, conveys no license or rights under any
17  * patent, copyright, mask work right, or any other intellectual property rights in
18  * or to any products. NXP Semiconductors reserves the right to make changes
19  * in the software without notification. NXP Semiconductors also makes no
20  * representation or warranty that such application will be suitable for the
21  * specified use without further testing or modification.
22  *
23  * @par
24  * Permission to use, copy, modify, and distribute this software and its
25  * documentation is hereby granted, under NXP Semiconductors' and its
26  * licensor's relevant copyrights in the software, without fee, provided that it
27  * is used in conjunction with NXP Semiconductors microcontrollers. This
28  * copyright, permission, and disclaimer notice must appear in all copies of
29  * this code.
30  */
31 
32 #include "board.h"
33 
57 /*****************************************************************************
58  * Private types/enumerations/variables
59  ****************************************************************************/
60 
61 /*****************************************************************************
62  * Public types/enumerations/variables
63  ****************************************************************************/
64 
65 /*****************************************************************************
66  * Private functions
67  ****************************************************************************/
68 
69 #define TIME_INTERVAL (1000)
70 
71 /*****************************************************************************
72  * Public functions
73  ****************************************************************************/
74 
79 void RIT_IRQHandler(void)
80 {
81  /* Clearn interrupt */
82  Chip_RIT_ClearInt(LPC_RITIMER);
83 
84  /* Toggle LED */
85  Board_LED_Toggle(0);
86 }
87 
92 int main(void)
93 {
94  Board_Init();
95 
96  Board_LED_Set(0, true);
97 
98  /* Initialize RITimer */
99  Chip_RIT_Init(LPC_RITIMER);
100 
101  /* Configure RIT for a 1s interrupt tick rate */
102  Chip_RIT_SetTimerInterval(LPC_RITIMER, TIME_INTERVAL);
103 
104  NVIC_EnableIRQ(RIT_IRQn);
105 
106  /* LEDs toggle in interrupt handlers */
107  while (1) {
108  __WFI();
109  }
110 }
111