SDK Development / mbed-src

mbed SDK library sources

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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

cpp/DigitalIn.h@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #ifndef MBED_DIGITALIN_H
mbed_official 0:fd0d7bdfcdc2 23 #define MBED_DIGITALIN_H
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 #include "platform.h"
mbed_official 0:fd0d7bdfcdc2 26
mbed_official 0:fd0d7bdfcdc2 27 #include "gpio_api.h"
mbed_official 0:fd0d7bdfcdc2 28
mbed_official 0:fd0d7bdfcdc2 29 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 30
mbed_official 0:fd0d7bdfcdc2 31 /** A digital input, used for reading the state of a pin
mbed_official 0:fd0d7bdfcdc2 32 *
mbed_official 0:fd0d7bdfcdc2 33 * Example:
mbed_official 0:fd0d7bdfcdc2 34 * @code
mbed_official 0:fd0d7bdfcdc2 35 * // Flash an LED while a DigitalIn is true
mbed_official 0:fd0d7bdfcdc2 36 *
mbed_official 0:fd0d7bdfcdc2 37 * #include "mbed.h"
mbed_official 0:fd0d7bdfcdc2 38 *
mbed_official 0:fd0d7bdfcdc2 39 * DigitalIn enable(p5);
mbed_official 0:fd0d7bdfcdc2 40 * DigitalOut led(LED1);
mbed_official 0:fd0d7bdfcdc2 41 *
mbed_official 0:fd0d7bdfcdc2 42 * int main() {
mbed_official 0:fd0d7bdfcdc2 43 * while(1) {
mbed_official 0:fd0d7bdfcdc2 44 * if(enable) {
mbed_official 0:fd0d7bdfcdc2 45 * led = !led;
mbed_official 0:fd0d7bdfcdc2 46 * }
mbed_official 0:fd0d7bdfcdc2 47 * wait(0.25);
mbed_official 0:fd0d7bdfcdc2 48 * }
mbed_official 0:fd0d7bdfcdc2 49 * }
mbed_official 0:fd0d7bdfcdc2 50 * @endcode
mbed_official 0:fd0d7bdfcdc2 51 */
mbed_official 0:fd0d7bdfcdc2 52 class DigitalIn {
mbed_official 0:fd0d7bdfcdc2 53
mbed_official 0:fd0d7bdfcdc2 54 public:
mbed_official 0:fd0d7bdfcdc2 55 /** Create a DigitalIn connected to the specified pin
mbed_official 0:fd0d7bdfcdc2 56 *
mbed_official 0:fd0d7bdfcdc2 57 * @param pin DigitalIn pin to connect to
mbed_official 0:fd0d7bdfcdc2 58 * @param name (optional) A string to identify the object
mbed_official 0:fd0d7bdfcdc2 59 */
mbed_official 0:fd0d7bdfcdc2 60 DigitalIn(PinName pin) {
mbed_official 0:fd0d7bdfcdc2 61 gpio_init(&gpio, pin, PIN_INPUT);
mbed_official 0:fd0d7bdfcdc2 62 }
mbed_official 0:fd0d7bdfcdc2 63
mbed_official 0:fd0d7bdfcdc2 64 /** Read the input, represented as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 65 *
mbed_official 0:fd0d7bdfcdc2 66 * @returns
mbed_official 0:fd0d7bdfcdc2 67 * An integer representing the state of the input pin,
mbed_official 0:fd0d7bdfcdc2 68 * 0 for logical 0, 1 for logical 1
mbed_official 0:fd0d7bdfcdc2 69 */
mbed_official 0:fd0d7bdfcdc2 70 int read() {
mbed_official 0:fd0d7bdfcdc2 71 return gpio_read(&gpio);
mbed_official 0:fd0d7bdfcdc2 72 }
mbed_official 0:fd0d7bdfcdc2 73
mbed_official 0:fd0d7bdfcdc2 74 /** Set the input pin mode
mbed_official 0:fd0d7bdfcdc2 75 *
mbed_official 0:fd0d7bdfcdc2 76 * @param mode PullUp, PullDown, PullNone, OpenDrain
mbed_official 0:fd0d7bdfcdc2 77 */
mbed_official 0:fd0d7bdfcdc2 78 void mode(PinMode pull) {
mbed_official 0:fd0d7bdfcdc2 79 gpio_mode(&gpio, pull);
mbed_official 0:fd0d7bdfcdc2 80 }
mbed_official 0:fd0d7bdfcdc2 81
mbed_official 0:fd0d7bdfcdc2 82 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 83 /** An operator shorthand for read()
mbed_official 0:fd0d7bdfcdc2 84 */
mbed_official 0:fd0d7bdfcdc2 85 operator int() {
mbed_official 0:fd0d7bdfcdc2 86 return read();
mbed_official 0:fd0d7bdfcdc2 87 }
mbed_official 0:fd0d7bdfcdc2 88 #endif
mbed_official 0:fd0d7bdfcdc2 89
mbed_official 0:fd0d7bdfcdc2 90 protected:
mbed_official 0:fd0d7bdfcdc2 91 gpio_t gpio;
mbed_official 0:fd0d7bdfcdc2 92 };
mbed_official 0:fd0d7bdfcdc2 93
mbed_official 0:fd0d7bdfcdc2 94 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 95
mbed_official 0:fd0d7bdfcdc2 96 #endif