mbed library sources
Dependents: STM32F103C8T6-RangoTec STM32-103C8_Plantilla_USB
Diff: common/gpio.c
- Revision:
- 113:65a335a675de
- Child:
- 127:ce7cebc0511f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/common/gpio.c Mon Mar 10 11:30:07 2014 +0000 @@ -0,0 +1,56 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "gpio_api.h" + +static inline void _gpio_init_in(gpio_t* gpio, PinName pin, PinMode mode) +{ + gpio_init(gpio, pin); + gpio_mode(gpio, mode); + gpio_dir(gpio, PIN_INPUT); +} + +static inline void _gpio_init_out(gpio_t* gpio, PinName pin, PinMode mode, int value) +{ + gpio_init(gpio, pin); + gpio_write(gpio, value); + gpio_dir(gpio, PIN_OUTPUT); + gpio_mode(gpio, mode); +} + +void gpio_init_in(gpio_t* gpio, PinName pin) { + gpio_init_in_ex(gpio, pin, PullDefault); +} + +void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) { + _gpio_init_in(gpio, pin, mode); +} + +void gpio_init_out(gpio_t* gpio, PinName pin) { + gpio_init_out_ex(gpio, pin, 0); +} + +void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) { + _gpio_init_out(gpio, pin, PullNone, value); +} + +void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value) { + if (direction == PIN_INPUT) { + _gpio_init_in(gpio, pin, mode); + gpio_write(gpio, value); // we prepare the value in case it is switched later + } else { + _gpio_init_out(gpio, pin, mode, value); + } +}