Daniel Vizcaya / Mbed OS 04_RTOS_Embebidos

Entrega 3er corte - sistemas embebidos

mbed-os/hal/mbed_gpio.c@1:fcdb45ee95b9, 2018-05-30 (annotated)

Committer:
Bethory
Date:
Wed May 30 04:46:28 2018 +0000
Revision:
1:fcdb45ee95b9
Parent:
0:6ad07c9019fd 
Entrega Final

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bethory 0:6ad07c9019fd 1 /* mbed Microcontroller Library
Bethory 0:6ad07c9019fd 2 * Copyright (c) 2006-2013 ARM Limited
Bethory 0:6ad07c9019fd 3 *
Bethory 0:6ad07c9019fd 4 * Licensed under the Apache License, Version 2.0 (the "License");
Bethory 0:6ad07c9019fd 5 * you may not use this file except in compliance with the License.
Bethory 0:6ad07c9019fd 6 * You may obtain a copy of the License at
Bethory 0:6ad07c9019fd 7 *
Bethory 0:6ad07c9019fd 8 * http://www.apache.org/licenses/LICENSE-2.0
Bethory 0:6ad07c9019fd 9 *
Bethory 0:6ad07c9019fd 10 * Unless required by applicable law or agreed to in writing, software
Bethory 0:6ad07c9019fd 11 * distributed under the License is distributed on an "AS IS" BASIS,
Bethory 0:6ad07c9019fd 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Bethory 0:6ad07c9019fd 13 * See the License for the specific language governing permissions and
Bethory 0:6ad07c9019fd 14 * limitations under the License.
Bethory 0:6ad07c9019fd 15 */
Bethory 0:6ad07c9019fd 16 #include "hal/gpio_api.h"
Bethory 0:6ad07c9019fd 17
Bethory 0:6ad07c9019fd 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
Bethory 0:6ad07c9019fd 19 {
Bethory 0:6ad07c9019fd 20 gpio_init(gpio, pin);
Bethory 0:6ad07c9019fd 21 if (pin != NC) {
Bethory 0:6ad07c9019fd 22 gpio_dir(gpio, PIN_INPUT);
Bethory 0:6ad07c9019fd 23 gpio_mode(gpio, mode);
Bethory 0:6ad07c9019fd 24 }
Bethory 0:6ad07c9019fd 25 }
Bethory 0:6ad07c9019fd 26
Bethory 0:6ad07c9019fd 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
Bethory 0:6ad07c9019fd 28 {
Bethory 0:6ad07c9019fd 29 gpio_init(gpio, pin);
Bethory 0:6ad07c9019fd 30 if (pin != NC) {
Bethory 0:6ad07c9019fd 31 gpio_write(gpio, value);
Bethory 0:6ad07c9019fd 32 gpio_dir(gpio, PIN_OUTPUT);
Bethory 0:6ad07c9019fd 33 gpio_mode(gpio, mode);
Bethory 0:6ad07c9019fd 34 }
Bethory 0:6ad07c9019fd 35 }
Bethory 0:6ad07c9019fd 36
Bethory 0:6ad07c9019fd 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
Bethory 0:6ad07c9019fd 38 gpio_init_in_ex(gpio, pin, PullDefault);
Bethory 0:6ad07c9019fd 39 }
Bethory 0:6ad07c9019fd 40
Bethory 0:6ad07c9019fd 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
Bethory 0:6ad07c9019fd 42 _gpio_init_in(gpio, pin, mode);
Bethory 0:6ad07c9019fd 43 }
Bethory 0:6ad07c9019fd 44
Bethory 0:6ad07c9019fd 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
Bethory 0:6ad07c9019fd 46 gpio_init_out_ex(gpio, pin, 0);
Bethory 0:6ad07c9019fd 47 }
Bethory 0:6ad07c9019fd 48
Bethory 0:6ad07c9019fd 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
Bethory 0:6ad07c9019fd 50 _gpio_init_out(gpio, pin, PullNone, value);
Bethory 0:6ad07c9019fd 51 }
Bethory 0:6ad07c9019fd 52
Bethory 0:6ad07c9019fd 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
Bethory 0:6ad07c9019fd 54 if (direction == PIN_INPUT) {
Bethory 0:6ad07c9019fd 55 _gpio_init_in(gpio, pin, mode);
Bethory 0:6ad07c9019fd 56 if (pin != NC)
Bethory 0:6ad07c9019fd 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
Bethory 0:6ad07c9019fd 58 } else {
Bethory 0:6ad07c9019fd 59 _gpio_init_out(gpio, pin, mode, value);
Bethory 0:6ad07c9019fd 60 }
Bethory 0:6ad07c9019fd 61 }