Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

common/gpio.c@160:6870f452afa4, 2014-04-14 (annotated)

Committer:
mbed_official
Date:
Mon Apr 14 11:30:06 2014 +0100
Revision:
160:6870f452afa4
Parent:
127:ce7cebc0511f
Child:
221:8276e3a4886f
Synchronized with git revision 65be1ee4a1e5212e696a4d8cab05bfc0522bb81f



Full URL: https://github.com/mbedmicro/mbed/commit/65be1ee4a1e5212e696a4d8cab05bfc0522bb81f/



Mode added to BusIn + allow creation of NC pins

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 113:65a335a675de 1 /* mbed Microcontroller Library
mbed_official 113:65a335a675de 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 113:65a335a675de 3 *
mbed_official 113:65a335a675de 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 113:65a335a675de 5 * you may not use this file except in compliance with the License.
mbed_official 113:65a335a675de 6 * You may obtain a copy of the License at
mbed_official 113:65a335a675de 7 *
mbed_official 113:65a335a675de 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 113:65a335a675de 9 *
mbed_official 113:65a335a675de 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 113:65a335a675de 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 113:65a335a675de 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 113:65a335a675de 13 * See the License for the specific language governing permissions and
mbed_official 113:65a335a675de 14 * limitations under the License.
mbed_official 113:65a335a675de 15 */
mbed_official 113:65a335a675de 16 #include "gpio_api.h"
mbed_official 113:65a335a675de 17
mbed_official 113:65a335a675de 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
mbed_official 113:65a335a675de 19 {
mbed_official 127:ce7cebc0511f 20 gpio_init(gpio, pin);
mbed_official 160:6870f452afa4 21 if (pin != NC) {
mbed_official 160:6870f452afa4 22 gpio_dir(gpio, PIN_INPUT);
mbed_official 160:6870f452afa4 23 gpio_mode(gpio, mode);
mbed_official 160:6870f452afa4 24 }
mbed_official 113:65a335a675de 25 }
mbed_official 113:65a335a675de 26
mbed_official 113:65a335a675de 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
mbed_official 113:65a335a675de 28 {
mbed_official 113:65a335a675de 29 gpio_init(gpio, pin);
mbed_official 160:6870f452afa4 30 if (pin != NC) {
mbed_official 160:6870f452afa4 31 gpio_write(gpio, value);
mbed_official 160:6870f452afa4 32 gpio_dir(gpio, PIN_OUTPUT);
mbed_official 160:6870f452afa4 33 gpio_mode(gpio, mode);
mbed_official 160:6870f452afa4 34 }
mbed_official 113:65a335a675de 35 }
mbed_official 113:65a335a675de 36
mbed_official 113:65a335a675de 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
mbed_official 113:65a335a675de 38 gpio_init_in_ex(gpio, pin, PullDefault);
mbed_official 113:65a335a675de 39 }
mbed_official 113:65a335a675de 40
mbed_official 113:65a335a675de 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
mbed_official 113:65a335a675de 42 _gpio_init_in(gpio, pin, mode);
mbed_official 113:65a335a675de 43 }
mbed_official 113:65a335a675de 44
mbed_official 113:65a335a675de 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
mbed_official 113:65a335a675de 46 gpio_init_out_ex(gpio, pin, 0);
mbed_official 113:65a335a675de 47 }
mbed_official 113:65a335a675de 48
mbed_official 113:65a335a675de 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
mbed_official 113:65a335a675de 50 _gpio_init_out(gpio, pin, PullNone, value);
mbed_official 113:65a335a675de 51 }
mbed_official 113:65a335a675de 52
mbed_official 113:65a335a675de 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
mbed_official 113:65a335a675de 54 if (direction == PIN_INPUT) {
mbed_official 113:65a335a675de 55 _gpio_init_in(gpio, pin, mode);
mbed_official 160:6870f452afa4 56 if (pin != NC)
mbed_official 160:6870f452afa4 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
mbed_official 113:65a335a675de 58 } else {
mbed_official 113:65a335a675de 59 _gpio_init_out(gpio, pin, mode, value);
mbed_official 113:65a335a675de 60 }
mbed_official 113:65a335a675de 61 }