Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/gpio.c@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "gpio_api.h"
yihui 0:700cadd8b708 17
yihui 0:700cadd8b708 18 static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode)
yihui 0:700cadd8b708 19 {
yihui 0:700cadd8b708 20 gpio_init(gpio, pin);
yihui 0:700cadd8b708 21 if (pin != NC) {
yihui 0:700cadd8b708 22 gpio_dir(gpio, PIN_INPUT);
yihui 0:700cadd8b708 23 gpio_mode(gpio, mode);
yihui 0:700cadd8b708 24 }
yihui 0:700cadd8b708 25 }
yihui 0:700cadd8b708 26
yihui 0:700cadd8b708 27 static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value)
yihui 0:700cadd8b708 28 {
yihui 0:700cadd8b708 29 gpio_init(gpio, pin);
yihui 0:700cadd8b708 30 if (pin != NC) {
yihui 0:700cadd8b708 31 gpio_write(gpio, value);
yihui 0:700cadd8b708 32 gpio_dir(gpio, PIN_OUTPUT);
yihui 0:700cadd8b708 33 gpio_mode(gpio, mode);
yihui 0:700cadd8b708 34 }
yihui 0:700cadd8b708 35 }
yihui 0:700cadd8b708 36
yihui 0:700cadd8b708 37 void gpio_init_in(gpio_t* gpio, PinName pin) {
yihui 0:700cadd8b708 38 gpio_init_in_ex(gpio, pin, PullDefault);
yihui 0:700cadd8b708 39 }
yihui 0:700cadd8b708 40
yihui 0:700cadd8b708 41 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) {
yihui 0:700cadd8b708 42 _gpio_init_in(gpio, pin, mode);
yihui 0:700cadd8b708 43 }
yihui 0:700cadd8b708 44
yihui 0:700cadd8b708 45 void gpio_init_out(gpio_t* gpio, PinName pin) {
yihui 0:700cadd8b708 46 gpio_init_out_ex(gpio, pin, 0);
yihui 0:700cadd8b708 47 }
yihui 0:700cadd8b708 48
yihui 0:700cadd8b708 49 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) {
yihui 0:700cadd8b708 50 _gpio_init_out(gpio, pin, PullNone, value);
yihui 0:700cadd8b708 51 }
yihui 0:700cadd8b708 52
yihui 0:700cadd8b708 53 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) {
yihui 0:700cadd8b708 54 if (direction == PIN_INPUT) {
yihui 0:700cadd8b708 55 _gpio_init_in(gpio, pin, mode);
yihui 0:700cadd8b708 56 if (pin != NC)
yihui 0:700cadd8b708 57 gpio_write(gpio, value); // we prepare the value in case it is switched later
yihui 0:700cadd8b708 58 } else {
yihui 0:700cadd8b708 59 _gpio_init_out(gpio, pin, mode, value);
yihui 0:700cadd8b708 60 }
yihui 0:700cadd8b708 61 }