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Superseded
This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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.
api/DigitalIn.h@594:5afbce4ea2da, 2015-07-21 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Jul 21 13:45:08 2015 +0100
- Revision:
- 594:5afbce4ea2da
- Parent:
- 455:8bc3a354916d
Synchronized with git revision 35cfd8ec8265fe052e158123f304a686b314a675
Full URL: https://github.com/mbedmicro/mbed/commit/35cfd8ec8265fe052e158123f304a686b314a675/
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 13:0645d8841f51 | 1 | /* mbed Microcontroller Library |
bogdanm | 13:0645d8841f51 | 2 | * Copyright (c) 2006-2013 ARM Limited |
bogdanm | 13:0645d8841f51 | 3 | * |
bogdanm | 13:0645d8841f51 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 13:0645d8841f51 | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 13:0645d8841f51 | 6 | * You may obtain a copy of the License at |
bogdanm | 13:0645d8841f51 | 7 | * |
bogdanm | 13:0645d8841f51 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 13:0645d8841f51 | 9 | * |
bogdanm | 13:0645d8841f51 | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 13:0645d8841f51 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 13:0645d8841f51 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 13:0645d8841f51 | 13 | * See the License for the specific language governing permissions and |
bogdanm | 13:0645d8841f51 | 14 | * limitations under the License. |
bogdanm | 13:0645d8841f51 | 15 | */ |
bogdanm | 13:0645d8841f51 | 16 | #ifndef MBED_DIGITALIN_H |
bogdanm | 13:0645d8841f51 | 17 | #define MBED_DIGITALIN_H |
bogdanm | 13:0645d8841f51 | 18 | |
bogdanm | 13:0645d8841f51 | 19 | #include "platform.h" |
bogdanm | 13:0645d8841f51 | 20 | |
bogdanm | 13:0645d8841f51 | 21 | #include "gpio_api.h" |
bogdanm | 13:0645d8841f51 | 22 | |
bogdanm | 13:0645d8841f51 | 23 | namespace mbed { |
bogdanm | 13:0645d8841f51 | 24 | |
bogdanm | 13:0645d8841f51 | 25 | /** A digital input, used for reading the state of a pin |
bogdanm | 13:0645d8841f51 | 26 | * |
bogdanm | 13:0645d8841f51 | 27 | * Example: |
bogdanm | 13:0645d8841f51 | 28 | * @code |
bogdanm | 13:0645d8841f51 | 29 | * // Flash an LED while a DigitalIn is true |
bogdanm | 13:0645d8841f51 | 30 | * |
bogdanm | 13:0645d8841f51 | 31 | * #include "mbed.h" |
bogdanm | 13:0645d8841f51 | 32 | * |
bogdanm | 13:0645d8841f51 | 33 | * DigitalIn enable(p5); |
bogdanm | 13:0645d8841f51 | 34 | * DigitalOut led(LED1); |
bogdanm | 13:0645d8841f51 | 35 | * |
bogdanm | 13:0645d8841f51 | 36 | * int main() { |
bogdanm | 13:0645d8841f51 | 37 | * while(1) { |
bogdanm | 13:0645d8841f51 | 38 | * if(enable) { |
bogdanm | 13:0645d8841f51 | 39 | * led = !led; |
bogdanm | 13:0645d8841f51 | 40 | * } |
bogdanm | 13:0645d8841f51 | 41 | * wait(0.25); |
bogdanm | 13:0645d8841f51 | 42 | * } |
bogdanm | 13:0645d8841f51 | 43 | * } |
bogdanm | 13:0645d8841f51 | 44 | * @endcode |
bogdanm | 13:0645d8841f51 | 45 | */ |
bogdanm | 13:0645d8841f51 | 46 | class DigitalIn { |
bogdanm | 13:0645d8841f51 | 47 | |
bogdanm | 13:0645d8841f51 | 48 | public: |
bogdanm | 13:0645d8841f51 | 49 | /** Create a DigitalIn connected to the specified pin |
bogdanm | 13:0645d8841f51 | 50 | * |
bogdanm | 13:0645d8841f51 | 51 | * @param pin DigitalIn pin to connect to |
bogdanm | 13:0645d8841f51 | 52 | */ |
mbed_official | 212:34d62c0b2af6 | 53 | DigitalIn(PinName pin) : gpio() { |
mbed_official | 113:65a335a675de | 54 | gpio_init_in(&gpio, pin); |
bogdanm | 13:0645d8841f51 | 55 | } |
bogdanm | 13:0645d8841f51 | 56 | |
mbed_official | 113:65a335a675de | 57 | /** Create a DigitalIn connected to the specified pin |
mbed_official | 113:65a335a675de | 58 | * |
mbed_official | 113:65a335a675de | 59 | * @param pin DigitalIn pin to connect to |
mbed_official | 113:65a335a675de | 60 | * @param mode the initial mode of the pin |
mbed_official | 113:65a335a675de | 61 | */ |
mbed_official | 212:34d62c0b2af6 | 62 | DigitalIn(PinName pin, PinMode mode) : gpio() { |
mbed_official | 113:65a335a675de | 63 | gpio_init_in_ex(&gpio, pin, mode); |
mbed_official | 113:65a335a675de | 64 | } |
bogdanm | 13:0645d8841f51 | 65 | /** Read the input, represented as 0 or 1 (int) |
bogdanm | 13:0645d8841f51 | 66 | * |
bogdanm | 13:0645d8841f51 | 67 | * @returns |
bogdanm | 13:0645d8841f51 | 68 | * An integer representing the state of the input pin, |
bogdanm | 13:0645d8841f51 | 69 | * 0 for logical 0, 1 for logical 1 |
bogdanm | 13:0645d8841f51 | 70 | */ |
bogdanm | 13:0645d8841f51 | 71 | int read() { |
bogdanm | 13:0645d8841f51 | 72 | return gpio_read(&gpio); |
bogdanm | 13:0645d8841f51 | 73 | } |
bogdanm | 13:0645d8841f51 | 74 | |
bogdanm | 13:0645d8841f51 | 75 | /** Set the input pin mode |
bogdanm | 13:0645d8841f51 | 76 | * |
bogdanm | 13:0645d8841f51 | 77 | * @param mode PullUp, PullDown, PullNone, OpenDrain |
bogdanm | 13:0645d8841f51 | 78 | */ |
bogdanm | 13:0645d8841f51 | 79 | void mode(PinMode pull) { |
bogdanm | 13:0645d8841f51 | 80 | gpio_mode(&gpio, pull); |
bogdanm | 13:0645d8841f51 | 81 | } |
bogdanm | 13:0645d8841f51 | 82 | |
mbed_official | 455:8bc3a354916d | 83 | /** Return the output setting, represented as 0 or 1 (int) |
mbed_official | 455:8bc3a354916d | 84 | * |
mbed_official | 455:8bc3a354916d | 85 | * @returns |
mbed_official | 455:8bc3a354916d | 86 | * Non zero value if pin is connected to uc GPIO |
mbed_official | 455:8bc3a354916d | 87 | * 0 if gpio object was initialized with NC |
mbed_official | 455:8bc3a354916d | 88 | */ |
mbed_official | 455:8bc3a354916d | 89 | int is_connected() { |
mbed_official | 455:8bc3a354916d | 90 | return gpio_is_connected(&gpio); |
mbed_official | 455:8bc3a354916d | 91 | } |
mbed_official | 455:8bc3a354916d | 92 | |
bogdanm | 13:0645d8841f51 | 93 | #ifdef MBED_OPERATORS |
bogdanm | 13:0645d8841f51 | 94 | /** An operator shorthand for read() |
bogdanm | 13:0645d8841f51 | 95 | */ |
bogdanm | 13:0645d8841f51 | 96 | operator int() { |
bogdanm | 13:0645d8841f51 | 97 | return read(); |
bogdanm | 13:0645d8841f51 | 98 | } |
bogdanm | 13:0645d8841f51 | 99 | #endif |
bogdanm | 13:0645d8841f51 | 100 | |
bogdanm | 13:0645d8841f51 | 101 | protected: |
bogdanm | 13:0645d8841f51 | 102 | gpio_t gpio; |
bogdanm | 13:0645d8841f51 | 103 | }; |
bogdanm | 13:0645d8841f51 | 104 | |
bogdanm | 13:0645d8841f51 | 105 | } // namespace mbed |
bogdanm | 13:0645d8841f51 | 106 | |
bogdanm | 13:0645d8841f51 | 107 | #endif |