zhang boie / mbed-dev-f30333

mbed-dev-f303

hal/mbed_gpio.c@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "hal/gpio_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 gpio_init(gpio, pin);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 if (pin != NC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22 gpio_dir(gpio, PIN_INPUT);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 gpio_mode(gpio, mode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 gpio_init(gpio, pin);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 if (pin != NC) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 gpio_write(gpio, value);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32 gpio_dir(gpio, PIN_OUTPUT);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 gpio_mode(gpio, mode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 gpio_init_in_ex(gpio, pin, PullDefault);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42 _gpio_init_in(gpio, pin, mode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 gpio_init_out_ex(gpio, pin, 0);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50 _gpio_init_out(gpio, pin, PullNone, value);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 54 if (direction == PIN_INPUT) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 55 _gpio_init_in(gpio, pin, mode);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 56 if (pin != NC)
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 58 } else {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 59 _gpio_init_out(gpio, pin, mode, value);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 60 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 61 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 62