mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

hal/mbed_gpio.c@187:0387e8f68319, 2018-09-06 (annotated)

Committer:
AnnaBridge
Date:
Thu Sep 06 13:40:20 2018 +0100
Revision:
187:0387e8f68319
Parent:
149:156823d33999
Child:
189:f392fc9709a3
mbed-dev library. Release version 163

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2013 ARM Limited
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16 #include "hal/gpio_api.h"
<> 149:156823d33999 17
AnnaBridge 187:0387e8f68319 18 static inline void _gpio_init_in(gpio_t *gpio, PinName pin, PinMode mode)
<> 149:156823d33999 19 {
<> 149:156823d33999 20 gpio_init(gpio, pin);
<> 149:156823d33999 21 if (pin != NC) {
<> 149:156823d33999 22 gpio_dir(gpio, PIN_INPUT);
<> 149:156823d33999 23 gpio_mode(gpio, mode);
<> 149:156823d33999 24 }
<> 149:156823d33999 25 }
<> 149:156823d33999 26
AnnaBridge 187:0387e8f68319 27 static inline void _gpio_init_out(gpio_t *gpio, PinName pin, PinMode mode, int value)
<> 149:156823d33999 28 {
<> 149:156823d33999 29 gpio_init(gpio, pin);
<> 149:156823d33999 30 if (pin != NC) {
<> 149:156823d33999 31 gpio_write(gpio, value);
<> 149:156823d33999 32 gpio_dir(gpio, PIN_OUTPUT);
<> 149:156823d33999 33 gpio_mode(gpio, mode);
<> 149:156823d33999 34 }
<> 149:156823d33999 35 }
<> 149:156823d33999 36
AnnaBridge 187:0387e8f68319 37 void gpio_init_in(gpio_t *gpio, PinName pin)
AnnaBridge 187:0387e8f68319 38 {
<> 149:156823d33999 39 gpio_init_in_ex(gpio, pin, PullDefault);
<> 149:156823d33999 40 }
<> 149:156823d33999 41
AnnaBridge 187:0387e8f68319 42 void gpio_init_in_ex(gpio_t *gpio, PinName pin, PinMode mode)
AnnaBridge 187:0387e8f68319 43 {
<> 149:156823d33999 44 _gpio_init_in(gpio, pin, mode);
<> 149:156823d33999 45 }
<> 149:156823d33999 46
AnnaBridge 187:0387e8f68319 47 void gpio_init_out(gpio_t *gpio, PinName pin)
AnnaBridge 187:0387e8f68319 48 {
<> 149:156823d33999 49 gpio_init_out_ex(gpio, pin, 0);
<> 149:156823d33999 50 }
<> 149:156823d33999 51
AnnaBridge 187:0387e8f68319 52 void gpio_init_out_ex(gpio_t *gpio, PinName pin, int value)
AnnaBridge 187:0387e8f68319 53 {
<> 149:156823d33999 54 _gpio_init_out(gpio, pin, PullNone, value);
<> 149:156823d33999 55 }
<> 149:156823d33999 56
AnnaBridge 187:0387e8f68319 57 void gpio_init_inout(gpio_t *gpio, PinName pin, PinDirection direction, PinMode mode, int value)
AnnaBridge 187:0387e8f68319 58 {
<> 149:156823d33999 59 if (direction == PIN_INPUT) {
<> 149:156823d33999 60 _gpio_init_in(gpio, pin, mode);
AnnaBridge 187:0387e8f68319 61 if (pin != NC) {
AnnaBridge 187:0387e8f68319 62 gpio_write(gpio, value); // we prepare the value in case it is switched later
AnnaBridge 187:0387e8f68319 63 }
<> 149:156823d33999 64 } else {
<> 149:156823d33999 65 _gpio_init_out(gpio, pin, mode, value);
<> 149:156823d33999 66 }
<> 149:156823d33999 67 }