Takaaki Numai / mbed-dev

inport from local

Dependents:   Hobbyking_Cheetah_0511

hal/mbed_gpio.c@0:85b3fd62ea1a, 2020-03-16 (annotated)

Committer:
NYX
Date:
Mon Mar 16 06:35:48 2020 +0000
Revision:
0:85b3fd62ea1a
reinport to mbed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
NYX 0:85b3fd62ea1a 1 /* mbed Microcontroller Library
NYX 0:85b3fd62ea1a 2 * Copyright (c) 2006-2013 ARM Limited
NYX 0:85b3fd62ea1a 3 *
NYX 0:85b3fd62ea1a 4 * Licensed under the Apache License, Version 2.0 (the "License");
NYX 0:85b3fd62ea1a 5 * you may not use this file except in compliance with the License.
NYX 0:85b3fd62ea1a 6 * You may obtain a copy of the License at
NYX 0:85b3fd62ea1a 7 *
NYX 0:85b3fd62ea1a 8 * http://www.apache.org/licenses/LICENSE-2.0
NYX 0:85b3fd62ea1a 9 *
NYX 0:85b3fd62ea1a 10 * Unless required by applicable law or agreed to in writing, software
NYX 0:85b3fd62ea1a 11 * distributed under the License is distributed on an "AS IS" BASIS,
NYX 0:85b3fd62ea1a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
NYX 0:85b3fd62ea1a 13 * See the License for the specific language governing permissions and
NYX 0:85b3fd62ea1a 14 * limitations under the License.
NYX 0:85b3fd62ea1a 15 */
NYX 0:85b3fd62ea1a 16 #include "hal/gpio_api.h"
NYX 0:85b3fd62ea1a 17
NYX 0:85b3fd62ea1a 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
NYX 0:85b3fd62ea1a 19 {
NYX 0:85b3fd62ea1a 20 gpio_init(gpio, pin);
NYX 0:85b3fd62ea1a 21 if (pin != NC) {
NYX 0:85b3fd62ea1a 22 gpio_dir(gpio, PIN_INPUT);
NYX 0:85b3fd62ea1a 23 gpio_mode(gpio, mode);
NYX 0:85b3fd62ea1a 24 }
NYX 0:85b3fd62ea1a 25 }
NYX 0:85b3fd62ea1a 26
NYX 0:85b3fd62ea1a 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
NYX 0:85b3fd62ea1a 28 {
NYX 0:85b3fd62ea1a 29 gpio_init(gpio, pin);
NYX 0:85b3fd62ea1a 30 if (pin != NC) {
NYX 0:85b3fd62ea1a 31 gpio_write(gpio, value);
NYX 0:85b3fd62ea1a 32 gpio_dir(gpio, PIN_OUTPUT);
NYX 0:85b3fd62ea1a 33 gpio_mode(gpio, mode);
NYX 0:85b3fd62ea1a 34 }
NYX 0:85b3fd62ea1a 35 }
NYX 0:85b3fd62ea1a 36
NYX 0:85b3fd62ea1a 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
NYX 0:85b3fd62ea1a 38 gpio_init_in_ex(gpio, pin, PullDefault);
NYX 0:85b3fd62ea1a 39 }
NYX 0:85b3fd62ea1a 40
NYX 0:85b3fd62ea1a 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
NYX 0:85b3fd62ea1a 42 _gpio_init_in(gpio, pin, mode);
NYX 0:85b3fd62ea1a 43 }
NYX 0:85b3fd62ea1a 44
NYX 0:85b3fd62ea1a 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
NYX 0:85b3fd62ea1a 46 gpio_init_out_ex(gpio, pin, 0);
NYX 0:85b3fd62ea1a 47 }
NYX 0:85b3fd62ea1a 48
NYX 0:85b3fd62ea1a 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
NYX 0:85b3fd62ea1a 50 _gpio_init_out(gpio, pin, PullNone, value);
NYX 0:85b3fd62ea1a 51 }
NYX 0:85b3fd62ea1a 52
NYX 0:85b3fd62ea1a 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
NYX 0:85b3fd62ea1a 54 if (direction == PIN_INPUT) {
NYX 0:85b3fd62ea1a 55 _gpio_init_in(gpio, pin, mode);
NYX 0:85b3fd62ea1a 56 if (pin != NC)
NYX 0:85b3fd62ea1a 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
NYX 0:85b3fd62ea1a 58 } else {
NYX 0:85b3fd62ea1a 59 _gpio_init_out(gpio, pin, mode, value);
NYX 0:85b3fd62ea1a 60 }
NYX 0:85b3fd62ea1a 61 }