Greg Steiert / maxim_dev

Dependents:   sensomed

hal/mbed_gpio.c@0:0e018d759a2a, 2016-11-08 (annotated)

Committer:
switches
Date:
Tue Nov 08 18:27:11 2016 +0000
Revision:
0:0e018d759a2a
Initial commit

Who changed what in which revision?

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switches 0:0e018d759a2a 1 /* mbed Microcontroller Library
switches 0:0e018d759a2a 2 * Copyright (c) 2006-2013 ARM Limited
switches 0:0e018d759a2a 3 *
switches 0:0e018d759a2a 4 * Licensed under the Apache License, Version 2.0 (the "License");
switches 0:0e018d759a2a 5 * you may not use this file except in compliance with the License.
switches 0:0e018d759a2a 6 * You may obtain a copy of the License at
switches 0:0e018d759a2a 7 *
switches 0:0e018d759a2a 8 * http://www.apache.org/licenses/LICENSE-2.0
switches 0:0e018d759a2a 9 *
switches 0:0e018d759a2a 10 * Unless required by applicable law or agreed to in writing, software
switches 0:0e018d759a2a 11 * distributed under the License is distributed on an "AS IS" BASIS,
switches 0:0e018d759a2a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
switches 0:0e018d759a2a 13 * See the License for the specific language governing permissions and
switches 0:0e018d759a2a 14 * limitations under the License.
switches 0:0e018d759a2a 15 */
switches 0:0e018d759a2a 16 #include "hal/gpio_api.h"
switches 0:0e018d759a2a 17
switches 0:0e018d759a2a 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
switches 0:0e018d759a2a 19 {
switches 0:0e018d759a2a 20 gpio_init(gpio, pin);
switches 0:0e018d759a2a 21 if (pin != NC) {
switches 0:0e018d759a2a 22 gpio_dir(gpio, PIN_INPUT);
switches 0:0e018d759a2a 23 gpio_mode(gpio, mode);
switches 0:0e018d759a2a 24 }
switches 0:0e018d759a2a 25 }
switches 0:0e018d759a2a 26
switches 0:0e018d759a2a 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
switches 0:0e018d759a2a 28 {
switches 0:0e018d759a2a 29 gpio_init(gpio, pin);
switches 0:0e018d759a2a 30 if (pin != NC) {
switches 0:0e018d759a2a 31 gpio_write(gpio, value);
switches 0:0e018d759a2a 32 gpio_dir(gpio, PIN_OUTPUT);
switches 0:0e018d759a2a 33 gpio_mode(gpio, mode);
switches 0:0e018d759a2a 34 }
switches 0:0e018d759a2a 35 }
switches 0:0e018d759a2a 36
switches 0:0e018d759a2a 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
switches 0:0e018d759a2a 38 gpio_init_in_ex(gpio, pin, PullDefault);
switches 0:0e018d759a2a 39 }
switches 0:0e018d759a2a 40
switches 0:0e018d759a2a 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
switches 0:0e018d759a2a 42 _gpio_init_in(gpio, pin, mode);
switches 0:0e018d759a2a 43 }
switches 0:0e018d759a2a 44
switches 0:0e018d759a2a 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
switches 0:0e018d759a2a 46 gpio_init_out_ex(gpio, pin, 0);
switches 0:0e018d759a2a 47 }
switches 0:0e018d759a2a 48
switches 0:0e018d759a2a 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
switches 0:0e018d759a2a 50 _gpio_init_out(gpio, pin, PullNone, value);
switches 0:0e018d759a2a 51 }
switches 0:0e018d759a2a 52
switches 0:0e018d759a2a 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
switches 0:0e018d759a2a 54 if (direction == PIN_INPUT) {
switches 0:0e018d759a2a 55 _gpio_init_in(gpio, pin, mode);
switches 0:0e018d759a2a 56 if (pin != NC)
switches 0:0e018d759a2a 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
switches 0:0e018d759a2a 58 } else {
switches 0:0e018d759a2a 59 _gpio_init_out(gpio, pin, mode, value);
switches 0:0e018d759a2a 60 }
switches 0:0e018d759a2a 61 }