EL4121 Embedded System / mbed-os

mbed-os

Dependents:   cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more

hal/mbed_gpio.c@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* mbed Microcontroller Library
be_bryan 0:b74591d5ab33 2 * Copyright (c) 2006-2013 ARM Limited
be_bryan 0:b74591d5ab33 3 *
be_bryan 0:b74591d5ab33 4 * Licensed under the Apache License, Version 2.0 (the "License");
be_bryan 0:b74591d5ab33 5 * you may not use this file except in compliance with the License.
be_bryan 0:b74591d5ab33 6 * You may obtain a copy of the License at
be_bryan 0:b74591d5ab33 7 *
be_bryan 0:b74591d5ab33 8 * http://www.apache.org/licenses/LICENSE-2.0
be_bryan 0:b74591d5ab33 9 *
be_bryan 0:b74591d5ab33 10 * Unless required by applicable law or agreed to in writing, software
be_bryan 0:b74591d5ab33 11 * distributed under the License is distributed on an "AS IS" BASIS,
be_bryan 0:b74591d5ab33 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
be_bryan 0:b74591d5ab33 13 * See the License for the specific language governing permissions and
be_bryan 0:b74591d5ab33 14 * limitations under the License.
be_bryan 0:b74591d5ab33 15 */
be_bryan 0:b74591d5ab33 16 #include "hal/gpio_api.h"
be_bryan 0:b74591d5ab33 17
be_bryan 0:b74591d5ab33 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
be_bryan 0:b74591d5ab33 19 {
be_bryan 0:b74591d5ab33 20 gpio_init(gpio, pin);
be_bryan 0:b74591d5ab33 21 if (pin != NC) {
be_bryan 0:b74591d5ab33 22 gpio_dir(gpio, PIN_INPUT);
be_bryan 0:b74591d5ab33 23 gpio_mode(gpio, mode);
be_bryan 0:b74591d5ab33 24 }
be_bryan 0:b74591d5ab33 25 }
be_bryan 0:b74591d5ab33 26
be_bryan 0:b74591d5ab33 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
be_bryan 0:b74591d5ab33 28 {
be_bryan 0:b74591d5ab33 29 gpio_init(gpio, pin);
be_bryan 0:b74591d5ab33 30 if (pin != NC) {
be_bryan 0:b74591d5ab33 31 gpio_write(gpio, value);
be_bryan 0:b74591d5ab33 32 gpio_dir(gpio, PIN_OUTPUT);
be_bryan 0:b74591d5ab33 33 gpio_mode(gpio, mode);
be_bryan 0:b74591d5ab33 34 }
be_bryan 0:b74591d5ab33 35 }
be_bryan 0:b74591d5ab33 36
be_bryan 0:b74591d5ab33 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
be_bryan 0:b74591d5ab33 38 gpio_init_in_ex(gpio, pin, PullDefault);
be_bryan 0:b74591d5ab33 39 }
be_bryan 0:b74591d5ab33 40
be_bryan 0:b74591d5ab33 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
be_bryan 0:b74591d5ab33 42 _gpio_init_in(gpio, pin, mode);
be_bryan 0:b74591d5ab33 43 }
be_bryan 0:b74591d5ab33 44
be_bryan 0:b74591d5ab33 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
be_bryan 0:b74591d5ab33 46 gpio_init_out_ex(gpio, pin, 0);
be_bryan 0:b74591d5ab33 47 }
be_bryan 0:b74591d5ab33 48
be_bryan 0:b74591d5ab33 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
be_bryan 0:b74591d5ab33 50 _gpio_init_out(gpio, pin, PullNone, value);
be_bryan 0:b74591d5ab33 51 }
be_bryan 0:b74591d5ab33 52
be_bryan 0:b74591d5ab33 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
be_bryan 0:b74591d5ab33 54 if (direction == PIN_INPUT) {
be_bryan 0:b74591d5ab33 55 _gpio_init_in(gpio, pin, mode);
be_bryan 0:b74591d5ab33 56 if (pin != NC)
be_bryan 0:b74591d5ab33 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
be_bryan 0:b74591d5ab33 58 } else {
be_bryan 0:b74591d5ab33 59 _gpio_init_out(gpio, pin, mode, value);
be_bryan 0:b74591d5ab33 60 }
be_bryan 0:b74591d5ab33 61 }