1 /*
2 * Copyright 2017 , NXP
3 * All rights reserved.
4 *
5 *
6 * SPDX-License-Identifier: BSD-3-Clause
7 */
8
9 #include "fsl_port.h"
10
11 /*******************************************************************************
12 * Definitions
13 ******************************************************************************/
14 /* Component ID definition, used by tools. */
15 #ifndef FSL_COMPONENT_ID
16 #define FSL_COMPONENT_ID "platform.drivers.port_ke04"
17 #endif
18
19 /*******************************************************************************
20 * Variables
21 ******************************************************************************/
22
23 /*******************************************************************************
24 * Prototypes
25 ******************************************************************************/
26
27 /*******************************************************************************
28 * Code
29 ******************************************************************************/
30 /*!
31 * brief Selects pin for modules.
32 *
33 * This API is used to select the port pin for the module with multiple port pin
34 * selection. For example the FTM Channel 0 can be mapped to ether PTA0 or PTB2.
35 * Select FTM channel 0 map to PTA0 port pin as:
36 * code
37 * PORT_SetPinSelect(kPORT_FTM0CH0, kPORT_FTM0_CH0_PTA0);
38 * endcode
39 *
40 * @Note： This API doesn't support to select specified ALT for a given port pin.
41 * The ALT feature is automatically selected by hardware according to the
42 * ALT priority:
43 * Low -----> high:
44 * Alt1, Alt2, …
45 * when peripheral modules has been enabled.
46 *
47 * If you want to select a specified ALT for a given port pin, please add two more
48 * steps after calling PORT_SetPinSelect:
49 * 1. Enable module or the port control in the module for the ALT you want to select.
50 * For I2C ALT feature:all port enable is controlled by the module enable, so
51 * set IICEN in I2CX_C1 to enable the port pins for I2C feature.
52 * For KBI ALT feature:each port pin is controlled independently by each bit in KBIx_PE.
53 * set related bit in this register to enable the KBI feature in the port pin.
54 * 2. Make sure there is no module enabled with higher priority than the ALT module feature
55 * you want to select.
56 *
57 * param module Modules for pin selection.
58 * For NMI/RST module are write-once attribute after reset.
59 * param pin Port pin selection for modules.
60 *
61 */
PORT_SetPinSelect(port_module_t module,port_pin_select_t pin)62 void PORT_SetPinSelect(port_module_t module, port_pin_select_t pin)
63 {
64 if (0UL != (uint32_t)pin)
65 {
66 if (module > kPORT_SWDE)
67 {
68 SIM->PINSEL |= (uint32_t)module;
69 }
70 else
71 {
72 SIM->SOPT |= (uint32_t)module;
73 }
74 }
75 else
76 {
77 if (module > kPORT_SWDE)
78 {
79 SIM->PINSEL &= ~ (uint32_t)module;
80 }
81 else
82 {
83 SIM->SOPT &= ~ (uint32_t)module;
84 }
85 }
86 }
87
