1 | /* mbed Microcontroller Library
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2 | * Copyright (c) 2006-2013 ARM Limited
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 | #ifndef MBED_GPIO_API_H
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17 | #define MBED_GPIO_API_H
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18 |
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19 | #include "device.h"
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20 |
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21 | #ifdef __cplusplus
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22 | extern "C" {
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23 | #endif
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24 |
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25 | /* Set the given pin as GPIO
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26 | * @param pin The pin to be set as GPIO
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27 | * @return The GPIO port mask for this pin
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28 | **/
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29 | uint32_t gpio_set(PinName pin);
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30 |
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31 | /* Checks if gpio object is connected (pin was not initialized with NC)
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32 | * @param pin The pin to be set as GPIO
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33 | * @return 0 if port is initialized with NC
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34 | **/
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35 | int gpio_is_connected(const gpio_t *obj);
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36 |
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37 | /* GPIO object */
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38 | void gpio_init(gpio_t *obj, PinName pin);
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39 |
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40 | void gpio_mode (gpio_t *obj, PinMode mode);
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41 | void gpio_dir (gpio_t *obj, PinDirection direction);
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42 |
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43 | void gpio_write(gpio_t *obj, int value);
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44 | int gpio_read (gpio_t *obj);
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45 |
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46 | // the following set of functions are generic and are implemented in the common gpio.c file
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47 | void gpio_init_in(gpio_t* gpio, PinName pin);
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48 | void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode);
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49 | void gpio_init_out(gpio_t* gpio, PinName pin);
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50 | void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value);
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51 | void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value);
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52 |
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53 | #ifdef __cplusplus
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54 | }
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55 | #endif
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56 |
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57 | #endif
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