Denislam Valeev / Mbed OS Nucleo_rtos_basic

1

mbed-os/hal/mbed_gpio.c@0:e056ac8fecf8, 2018-03-13 (annotated)

Committer:
valeyev
Date:
Tue Mar 13 07:17:50 2018 +0000
Revision:
0:e056ac8fecf8
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Who changed what in which revision?

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valeyev 0:e056ac8fecf8 1 /* mbed Microcontroller Library
valeyev 0:e056ac8fecf8 2 * Copyright (c) 2006-2013 ARM Limited
valeyev 0:e056ac8fecf8 3 *
valeyev 0:e056ac8fecf8 4 * Licensed under the Apache License, Version 2.0 (the "License");
valeyev 0:e056ac8fecf8 5 * you may not use this file except in compliance with the License.
valeyev 0:e056ac8fecf8 6 * You may obtain a copy of the License at
valeyev 0:e056ac8fecf8 7 *
valeyev 0:e056ac8fecf8 8 * http://www.apache.org/licenses/LICENSE-2.0
valeyev 0:e056ac8fecf8 9 *
valeyev 0:e056ac8fecf8 10 * Unless required by applicable law or agreed to in writing, software
valeyev 0:e056ac8fecf8 11 * distributed under the License is distributed on an "AS IS" BASIS,
valeyev 0:e056ac8fecf8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
valeyev 0:e056ac8fecf8 13 * See the License for the specific language governing permissions and
valeyev 0:e056ac8fecf8 14 * limitations under the License.
valeyev 0:e056ac8fecf8 15 */
valeyev 0:e056ac8fecf8 16 #include "hal/gpio_api.h"
valeyev 0:e056ac8fecf8 17
valeyev 0:e056ac8fecf8 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
valeyev 0:e056ac8fecf8 19 {
valeyev 0:e056ac8fecf8 20 gpio_init(gpio, pin);
valeyev 0:e056ac8fecf8 21 if (pin != NC) {
valeyev 0:e056ac8fecf8 22 gpio_dir(gpio, PIN_INPUT);
valeyev 0:e056ac8fecf8 23 gpio_mode(gpio, mode);
valeyev 0:e056ac8fecf8 24 }
valeyev 0:e056ac8fecf8 25 }
valeyev 0:e056ac8fecf8 26
valeyev 0:e056ac8fecf8 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
valeyev 0:e056ac8fecf8 28 {
valeyev 0:e056ac8fecf8 29 gpio_init(gpio, pin);
valeyev 0:e056ac8fecf8 30 if (pin != NC) {
valeyev 0:e056ac8fecf8 31 gpio_write(gpio, value);
valeyev 0:e056ac8fecf8 32 gpio_dir(gpio, PIN_OUTPUT);
valeyev 0:e056ac8fecf8 33 gpio_mode(gpio, mode);
valeyev 0:e056ac8fecf8 34 }
valeyev 0:e056ac8fecf8 35 }
valeyev 0:e056ac8fecf8 36
valeyev 0:e056ac8fecf8 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
valeyev 0:e056ac8fecf8 38 gpio_init_in_ex(gpio, pin, PullDefault);
valeyev 0:e056ac8fecf8 39 }
valeyev 0:e056ac8fecf8 40
valeyev 0:e056ac8fecf8 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
valeyev 0:e056ac8fecf8 42 _gpio_init_in(gpio, pin, mode);
valeyev 0:e056ac8fecf8 43 }
valeyev 0:e056ac8fecf8 44
valeyev 0:e056ac8fecf8 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
valeyev 0:e056ac8fecf8 46 gpio_init_out_ex(gpio, pin, 0);
valeyev 0:e056ac8fecf8 47 }
valeyev 0:e056ac8fecf8 48
valeyev 0:e056ac8fecf8 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
valeyev 0:e056ac8fecf8 50 _gpio_init_out(gpio, pin, PullNone, value);
valeyev 0:e056ac8fecf8 51 }
valeyev 0:e056ac8fecf8 52
valeyev 0:e056ac8fecf8 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
valeyev 0:e056ac8fecf8 54 if (direction == PIN_INPUT) {
valeyev 0:e056ac8fecf8 55 _gpio_init_in(gpio, pin, mode);
valeyev 0:e056ac8fecf8 56 if (pin != NC)
valeyev 0:e056ac8fecf8 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
valeyev 0:e056ac8fecf8 58 } else {
valeyev 0:e056ac8fecf8 59 _gpio_init_out(gpio, pin, mode, value);
valeyev 0:e056ac8fecf8 60 }
valeyev 0:e056ac8fecf8 61 }