| 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
swm_8xx.c
Go to the documentation of this file.
1 /*
2 * @brief LPC8xx Pin Switch Matrix 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 #define PINASSIGN_IDX(movable) ((movable >> 4))
39 #define PINSHIFT(movable) (8 * (movable & (0xF)))
40
41 /*****************************************************************************
42 * Public types/enumerations/variables
43 ****************************************************************************/
44
45 /*****************************************************************************
46 * Private functions
47 ****************************************************************************/
48
49 /*****************************************************************************
50 * Public functions
51 ****************************************************************************/
52
53 /* assign a movable pin function to a physical pin */
54 void Chip_SWM_MovablePinAssign(CHIP_SWM_PIN_MOVABLE_T movable, CHIP_PINx_T pin)
55 {
56 uint32_t temp;
57 temp = LPC_SWM->PINASSIGN[PINASSIGN_IDX(movable)] & (~(0xFF << PINSHIFT(movable)));
58 LPC_SWM->PINASSIGN[PINASSIGN_IDX(movable)] = temp | (pin << PINSHIFT(movable));
59 }
60
61 /* true enables, false disables a Switch Matrix fixed-pin Function */
62 void Chip_SWM_FixedPinEnable(CHIP_SWM_PIN_FIXED_T pin, bool enable)
63 {
64 if (enable) { /* clear the bit */
65 LPC_SWM->PINENABLE0 &= ~(1 << pin);
66 }
67 else { /* set the bit */
68 LPC_SWM->PINENABLE0 |= (1 << pin);
69 }
70 }
71
72 /* returns true if pin function is enabled, false if disabled */
73 bool Chip_SWM_IsEnabled(CHIP_SWM_PIN_FIXED_T pin)
74 {
75 if (LPC_SWM->PINENABLE0 & (1 << pin)) {
76 return false; /* the bit is set, has not been enabled */
77 }
78 return true;/* the bit is not set, therefore is enabled */
79 }