LPCOpen Platform  v1.03
LPCOpen Platform for NXP LPC Microcontrollers
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ritimer_001.c
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1 /*
2  * @brief Repetitive Interrupt Timer registers and control functions
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 "ritimer_001.h"
33 
34 /*****************************************************************************
35  * Private types/enumerations/variables
36  ****************************************************************************/
37 
38 /*****************************************************************************
39  * Public types/enumerations/variables
40  ****************************************************************************/
41 
42 /*****************************************************************************
43  * Private functions
44  ****************************************************************************/
45 
46 /*****************************************************************************
47  * Public functions
48  ****************************************************************************/
49 
50 /* Initialize the RIT */
51 void IP_RIT_Init(IP_RITIMER_001_T *pRITimer)
52 {
53  pRITimer->COMPVAL = 0xFFFFFFFF;
54  pRITimer->MASK = 0x00000000;
55  pRITimer->CTRL = 0x0C;
56  pRITimer->COUNTER = 0x00000000;
57 #if defined(CHIP_LPC1347)
58  pRITimer->COMPVAL_H = 0x0;
59 #endif
60 }
61 
62 /* DeInitialize the RIT */
63 void IP_RIT_DeInit(IP_RITIMER_001_T *pRITimer)
64 {
65  IP_RIT_Init(pRITimer);
66 }
67 
68 /* Check whether interrupt is pending */
69 IntStatus IP_RIT_GetIntStatus(IP_RITIMER_001_T *pRITimer)
70 {
71  uint8_t result;
72 
73  if ((pRITimer->CTRL & RIT_CTRL_INT) == 1) {
74  result = SET;
75  }
76  else {
77  return RESET;
78  }
79 
80  return (IntStatus) result;
81 }