LPCOpen Platform  v1.03
LPCOpen Platform for NXP LPC Microcontrollers
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syscon_8xx.c
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1 /*
2  * @brief LPC8xx System & Control driver
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 licenser 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 "chip.h"
33 
34 /*****************************************************************************
35  * Private types/enumerations/variables
36  ****************************************************************************/
37 
38 /* PDSLEEPCFG register mask */
39 #define PDSLEEPWRMASK (0x0000FFB8)
40 #define PDSLEEPDATMASK (0x00000048)
41 
42 /* PDWAKECFG and PDRUNCFG register masks */
43 #define PDWAKEUPWRMASK (0x00006D10)
44 #define PDWAKEUPDATMASK (0x000080EF)
45 
46 /*****************************************************************************
47  * Public types/enumerations/variables
48  ****************************************************************************/
49 
50 /*****************************************************************************
51  * Private functions
52  ****************************************************************************/
53 
54 /*****************************************************************************
55  * Public functions
56  ****************************************************************************/
57 
58 /* Setup deep sleep behaviour for power down */
59 void Chip_SYSCTL_SetDeepSleepPD(uint32_t sleepmask)
60 {
61  /* Update new value */
62  LPC_SYSCTL->PDSLEEPCFG = PDSLEEPWRMASK | (sleepmask & PDSLEEPDATMASK);
63 }
64 
65 /* Setup wakeup behaviour from deep sleep */
66 void Chip_SYSCTL_SetWakeup(uint32_t wakeupmask)
67 {
68  /* Update new value */
69  LPC_SYSCTL->PDAWAKECFG = PDWAKEUPWRMASK | (wakeupmask & PDWAKEUPDATMASK);
70 }
71 
72 /* Power down one or more blocks or peripherals */
73 void Chip_SYSCTL_PowerDown(uint32_t powerdownmask)
74 {
75  uint32_t pdrun;
76 
77  /* Get current power states */
78  pdrun = LPC_SYSCTL->PDRUNCFG & PDWAKEUPDATMASK;
79 
80  /* Disable peripheral states by setting high */
81  pdrun |= (powerdownmask & PDWAKEUPDATMASK);
82 
83  /* Update power states with required register bits */
84  LPC_SYSCTL->PDRUNCFG = (PDWAKEUPWRMASK | pdrun);
85 }
86 
87 /* Power up one or more blocks or peripherals */
88 void Chip_SYSCTL_PowerUp(uint32_t powerupmask)
89 {
90  uint32_t pdrun;
91 
92  /* Get current power states */
93  pdrun = LPC_SYSCTL->PDRUNCFG & PDWAKEUPDATMASK;
94 
95  /* Enable peripheral states by setting low */
96  pdrun &= ~(powerupmask & PDWAKEUPDATMASK);
97 
98  /* Update power states with required register bits */
99  LPC_SYSCTL->PDRUNCFG = (PDWAKEUPWRMASK | pdrun);
100 }