1 /*
2 * @brief LPC15xx GPIO driver
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2013
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
46 /*****************************************************************************
47 * Public functions
48 ****************************************************************************/
49
50 /* Initialize GPIO block */
Chip_GPIO_Init(LPC_GPIO_T * pGPIO)51 void Chip_GPIO_Init(LPC_GPIO_T *pGPIO)
52 {
53 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_GPIO0);
54 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_GPIO1);
55 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_GPIO2);
56 Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_MUX);
57
58 Chip_SYSCTL_PeriphReset(RESET_MUX);
59 }
60
61 /* De-Initialize GPIO block */
Chip_GPIO_DeInit(LPC_GPIO_T * pGPIO)62 void Chip_GPIO_DeInit(LPC_GPIO_T *pGPIO)
63 {
64 Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_GPIO0);
65 Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_GPIO1);
66 Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_GPIO2);
67 Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_MUX);
68 }
69
70 /* Set a GPIO direction */
Chip_GPIO_WriteDirBit(LPC_GPIO_T * pGPIO,uint32_t port,uint8_t bit,bool setting)71 void Chip_GPIO_WriteDirBit(LPC_GPIO_T *pGPIO, uint32_t port, uint8_t bit, bool setting)
72 {
73 if (setting) {
74 pGPIO->DIR[port] |= 1UL << bit;
75 }
76 else {
77 pGPIO->DIR[port] &= ~(1UL << bit);
78 }
79 }
80
81 /* Set Direction for a GPIO port */
Chip_GPIO_SetDir(LPC_GPIO_T * pGPIO,uint8_t portNum,uint32_t bitValue,uint8_t out)82 void Chip_GPIO_SetDir(LPC_GPIO_T *pGPIO, uint8_t portNum, uint32_t bitValue, uint8_t out)
83 {
84 if (out) {
85 pGPIO->DIR[portNum] |= bitValue;
86 }
87 else {
88 pGPIO->DIR[portNum] &= ~bitValue;
89 }
90 }
91
92 /* Set GPIO direction for a single GPIO pin */
Chip_GPIO_SetPinDIR(LPC_GPIO_T * pGPIO,uint8_t port,uint8_t pin,bool output)93 void Chip_GPIO_SetPinDIR(LPC_GPIO_T *pGPIO, uint8_t port, uint8_t pin, bool output)
94 {
95 if (output) {
96 Chip_GPIO_SetPinDIROutput(pGPIO, port, pin);
97 }
98 else {
99 Chip_GPIO_SetPinDIRInput(pGPIO, port, pin);
100 }
101 }
102
103 /* Set GPIO direction for a all selected GPIO pins to an input or output */
Chip_GPIO_SetPortDIR(LPC_GPIO_T * pGPIO,uint8_t port,uint32_t pinMask,bool outSet)104 void Chip_GPIO_SetPortDIR(LPC_GPIO_T *pGPIO, uint8_t port, uint32_t pinMask, bool outSet)
105 {
106 if (outSet) {
107 Chip_GPIO_SetPortDIROutput(pGPIO, port, pinMask);
108 }
109 else {
110 Chip_GPIO_SetPortDIRInput(pGPIO, port, pinMask);
111 }
112 }
113