LPCOpen Platform
LPCOpen Platform for NXP LPC Microcontrollers
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
atimer.c
Go to the documentation of this file.
1 /*
2  * @brief ATIMER 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 
56 /*****************************************************************************
57  * Private types/enumerations/variables
58  ****************************************************************************/
59 
60 #define PresetCount (CRYSTAL_32K_FREQ_IN / 32)
61 
62 /*****************************************************************************
63  * Public types/enumerations/variables
64  ****************************************************************************/
65 
66 /*****************************************************************************
67  * Private functions
68  ****************************************************************************/
69 
70 /* Clearn interrupts */
71 static void ATIMER_ClearInts(void)
72 {
73  /* Clear Alarm Timer interrupt status */
75 
76  /* Clear Alarm Timer interrupt flag */
78 }
79 
80 /*****************************************************************************
81  * Public functions
82  ****************************************************************************/
83 
88 void EVRT_IRQHandler(void)
89 {
90  /* Check if source interrupt is ATIMER */
93  }
94 }
95 
100 int main(void)
101 {
102  bool On = false;
103 
104  Board_Init();
105  Board_LED_Init();
106 
107  /* Init Alarm Timer with Preset Count for about 1s */
109 
110  /* Init EVRT */
111  Chip_EVRT_Init();
112 
113  /* Enable EVRT in order to be able to read the ATIMER interrupt */
115 
116  /* Enable Alarm Timer Source */
118 
119  /* Enable NVIC */
120  NVIC_EnableIRQ(EVENTROUTER_IRQn);
121 
122  /* Clear the interrupt states */
124 
125  /* Enable Alarm Timer */
127 
128  while (1) {
129  /* Sleep until ATIMER fires */
130  __WFI();
131  On = (bool) !On;
132  Board_LED_Set(1, On);
133  }
134 }
135