| LPCOpen Platform v1.03 LPCOpen Platform for NXP LPC Microcontrollers

- Main Page
- Modules
- Data Structures
- Files
- Related Pages

- File List
- Globals

All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
sysctl_17xx_40xx.c
Go to the documentation of this file.
1 /*
2 * @brief LPC17xx/40xx System and 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 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 "chip.h"
33
34 /*****************************************************************************
35 * Private types/enumerations/variables
36 ****************************************************************************/
37
38 /*****************************************************************************
39 * Public types/enumerations/variables
40 ****************************************************************************/
41
42 /*****************************************************************************
43 * Private functions
44 ****************************************************************************/
45 /* Returns and clears the current sleep mode entry flags */
46 uint32_t Chip_SYSCTL_GetClrSleepFlags(uint32_t flags) {
47 uint32_t savedFlags = LPC_SYSCTL->PCON;
48
49 LPC_SYSCTL->PCON = flags;
50
51 return savedFlags & (SYSCTL_PD_SMFLAG | SYSCTL_PD_DSFLAG |
52 SYSCTL_PD_PDFLAG | SYSCTL_PD_DPDFLAG);
53 }
54
55 #if !defined(CHIP_LPC175X_6X)
56 /* Resets a peripheral */
57 void Chip_SYSCTL_PeriphReset(CHIP_SYSCTL_RESET_T periph)
58 {
59 uint32_t bitIndex, regIndex = (uint32_t) periph;
60
61 /* Get register array index and clock index into the register */
62 bitIndex = (regIndex % 32);
63 regIndex = regIndex / 32;
64
65 /* Reset peripheral */
66 LPC_SYSCTL->RSTCON[regIndex] = (1 << bitIndex);
67 LPC_SYSCTL->RSTCON[regIndex] &= ~(1 << bitIndex);
68 }
69 #endif