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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
62 /*****************************************************************************
63 * Private types/enumerations/variables
64 ****************************************************************************/
65
66 /*****************************************************************************
67 * Public types/enumerations/variables
68 ****************************************************************************/
69
70 /*****************************************************************************
71 * Private functions
72 ****************************************************************************/
73
74 #define TIME_INTERVAL (1000)
75 static volatile bool On;
76
77 /*****************************************************************************
78 * Public functions
79 ****************************************************************************/
80
85 void RIT_IRQHandler(void)
86 {
87 /* Clearn interrupt */
88 Chip_RIT_ClearInt(LPC_RITIMER);
89
90 /* Toggle LED */
91 On = (bool) !On;
92 Board_LED_Set(0, On);
93 }
94
99 int main(void)
100 {
101 Board_Init();
102
103 On = true;
104 Board_LED_Set(0, On);
105
106 /* Initialize RITimer */
107 Chip_RIT_Init(LPC_RITIMER);
108
109 /* Configure RIT for a 1s interrupt tick rate */
110 Chip_RIT_SetTimerInterval(LPC_RITIMER, TIME_INTERVAL);
111
112 NVIC_EnableIRQ(RITIMER_IRQn);
113
114 /* LED is toggled in interrupt handler */
115 while (1) {}
116 }
117