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Merge pull request #198 from mazgch/gpio_api
proposed change of gpio_api (new update pull request)
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Original file line number | Diff line number | Diff line change |
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/* 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" | ||
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||
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); | ||
} | ||
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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); | ||
} | ||
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void gpio_init_in(gpio_t* gpio, PinName pin) { | ||
gpio_init_in_ex(gpio, pin, PullDefault); | ||
} | ||
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void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode) { | ||
_gpio_init_in(gpio, pin, mode); | ||
} | ||
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void gpio_init_out(gpio_t* gpio, PinName pin) { | ||
gpio_init_out_ex(gpio, pin, 0); | ||
} | ||
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void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value) { | ||
_gpio_init_out(gpio, pin, PullNone, value); | ||
} | ||
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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); | ||
} | ||
} |
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