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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

api/DigitalIn.h@9:0ce32e54c9a7, 2013-06-10 (annotated)

Committer:
emilmont
Date:
Mon Jun 10 16:03:00 2013 +0100
Revision:
9:0ce32e54c9a7
Parent:
cpp/DigitalIn.h@2:143cac498751
Child:
10:3bc89ef62ce7
Refactoring of the mbed SDK:

- Provide a well defined HAL and API

- Keep separated the HAL implementations for the different targets

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
emilmont 2:143cac498751 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
emilmont 2:143cac498751 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 2:143cac498751 5 * you may not use this file except in compliance with the License.
emilmont 2:143cac498751 6 * You may obtain a copy of the License at
mbed_official 0:fd0d7bdfcdc2 7 *
emilmont 2:143cac498751 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:fd0d7bdfcdc2 9 *
emilmont 2:143cac498751 10 * Unless required by applicable law or agreed to in writing, software
emilmont 2:143cac498751 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 2:143cac498751 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 2:143cac498751 13 * See the License for the specific language governing permissions and
emilmont 2:143cac498751 14 * limitations under the License.
mbed_official 0:fd0d7bdfcdc2 15 */
mbed_official 0:fd0d7bdfcdc2 16 #ifndef MBED_DIGITALIN_H
mbed_official 0:fd0d7bdfcdc2 17 #define MBED_DIGITALIN_H
mbed_official 0:fd0d7bdfcdc2 18
mbed_official 0:fd0d7bdfcdc2 19 #include "platform.h"
mbed_official 0:fd0d7bdfcdc2 20
mbed_official 0:fd0d7bdfcdc2 21 #include "gpio_api.h"
mbed_official 0:fd0d7bdfcdc2 22
mbed_official 0:fd0d7bdfcdc2 23 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 /** A digital input, used for reading the state of a pin
mbed_official 0:fd0d7bdfcdc2 26 *
mbed_official 0:fd0d7bdfcdc2 27 * Example:
mbed_official 0:fd0d7bdfcdc2 28 * @code
mbed_official 0:fd0d7bdfcdc2 29 * // Flash an LED while a DigitalIn is true
emilmont 2:143cac498751 30 *
mbed_official 0:fd0d7bdfcdc2 31 * #include "mbed.h"
emilmont 2:143cac498751 32 *
mbed_official 0:fd0d7bdfcdc2 33 * DigitalIn enable(p5);
mbed_official 0:fd0d7bdfcdc2 34 * DigitalOut led(LED1);
emilmont 2:143cac498751 35 *
mbed_official 0:fd0d7bdfcdc2 36 * int main() {
mbed_official 0:fd0d7bdfcdc2 37 * while(1) {
mbed_official 0:fd0d7bdfcdc2 38 * if(enable) {
mbed_official 0:fd0d7bdfcdc2 39 * led = !led;
mbed_official 0:fd0d7bdfcdc2 40 * }
mbed_official 0:fd0d7bdfcdc2 41 * wait(0.25);
mbed_official 0:fd0d7bdfcdc2 42 * }
mbed_official 0:fd0d7bdfcdc2 43 * }
mbed_official 0:fd0d7bdfcdc2 44 * @endcode
mbed_official 0:fd0d7bdfcdc2 45 */
mbed_official 0:fd0d7bdfcdc2 46 class DigitalIn {
mbed_official 0:fd0d7bdfcdc2 47
mbed_official 0:fd0d7bdfcdc2 48 public:
mbed_official 0:fd0d7bdfcdc2 49 /** Create a DigitalIn connected to the specified pin
mbed_official 0:fd0d7bdfcdc2 50 *
mbed_official 0:fd0d7bdfcdc2 51 * @param pin DigitalIn pin to connect to
mbed_official 0:fd0d7bdfcdc2 52 * @param name (optional) A string to identify the object
mbed_official 0:fd0d7bdfcdc2 53 */
mbed_official 0:fd0d7bdfcdc2 54 DigitalIn(PinName pin) {
mbed_official 0:fd0d7bdfcdc2 55 gpio_init(&gpio, pin, PIN_INPUT);
mbed_official 0:fd0d7bdfcdc2 56 }
emilmont 2:143cac498751 57
mbed_official 0:fd0d7bdfcdc2 58 /** Read the input, represented as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 59 *
mbed_official 0:fd0d7bdfcdc2 60 * @returns
emilmont 2:143cac498751 61 * An integer representing the state of the input pin,
mbed_official 0:fd0d7bdfcdc2 62 * 0 for logical 0, 1 for logical 1
mbed_official 0:fd0d7bdfcdc2 63 */
mbed_official 0:fd0d7bdfcdc2 64 int read() {
mbed_official 0:fd0d7bdfcdc2 65 return gpio_read(&gpio);
mbed_official 0:fd0d7bdfcdc2 66 }
emilmont 2:143cac498751 67
mbed_official 0:fd0d7bdfcdc2 68 /** Set the input pin mode
mbed_official 0:fd0d7bdfcdc2 69 *
mbed_official 0:fd0d7bdfcdc2 70 * @param mode PullUp, PullDown, PullNone, OpenDrain
mbed_official 0:fd0d7bdfcdc2 71 */
mbed_official 0:fd0d7bdfcdc2 72 void mode(PinMode pull) {
mbed_official 0:fd0d7bdfcdc2 73 gpio_mode(&gpio, pull);
mbed_official 0:fd0d7bdfcdc2 74 }
emilmont 2:143cac498751 75
mbed_official 0:fd0d7bdfcdc2 76 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 77 /** An operator shorthand for read()
mbed_official 0:fd0d7bdfcdc2 78 */
mbed_official 0:fd0d7bdfcdc2 79 operator int() {
mbed_official 0:fd0d7bdfcdc2 80 return read();
mbed_official 0:fd0d7bdfcdc2 81 }
mbed_official 0:fd0d7bdfcdc2 82 #endif
mbed_official 0:fd0d7bdfcdc2 83
mbed_official 0:fd0d7bdfcdc2 84 protected:
mbed_official 0:fd0d7bdfcdc2 85 gpio_t gpio;
mbed_official 0:fd0d7bdfcdc2 86 };
mbed_official 0:fd0d7bdfcdc2 87
mbed_official 0:fd0d7bdfcdc2 88 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 89
mbed_official 0:fd0d7bdfcdc2 90 #endif