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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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/DigitalOut.h@455:8bc3a354916d, 2015-01-27 (annotated)

Committer:
mbed_official
Date:
Tue Jan 27 13:30:08 2015 +0000
Revision:
455:8bc3a354916d
Parent:
212:34d62c0b2af6 
Synchronized with git revision de09d163deef812a246ac8c48fb2978385bc7b53



Full URL: https://github.com/mbedmicro/mbed/commit/de09d163deef812a246ac8c48fb2978385bc7b53/

Who changed what in which revision?

UserRevisionLine numberNew 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_DIGITALOUT_H
bogdanm 13:0645d8841f51 17 #define MBED_DIGITALOUT_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20 #include "gpio_api.h"
bogdanm 13:0645d8841f51 21
bogdanm 13:0645d8841f51 22 namespace mbed {
bogdanm 13:0645d8841f51 23
bogdanm 13:0645d8841f51 24 /** A digital output, used for setting the state of a pin
bogdanm 13:0645d8841f51 25 *
bogdanm 13:0645d8841f51 26 * Example:
bogdanm 13:0645d8841f51 27 * @code
bogdanm 13:0645d8841f51 28 * // Toggle a LED
bogdanm 13:0645d8841f51 29 * #include "mbed.h"
bogdanm 13:0645d8841f51 30 *
bogdanm 13:0645d8841f51 31 * DigitalOut led(LED1);
bogdanm 13:0645d8841f51 32 *
bogdanm 13:0645d8841f51 33 * int main() {
bogdanm 13:0645d8841f51 34 * while(1) {
bogdanm 13:0645d8841f51 35 * led = !led;
bogdanm 13:0645d8841f51 36 * wait(0.2);
bogdanm 13:0645d8841f51 37 * }
bogdanm 13:0645d8841f51 38 * }
bogdanm 13:0645d8841f51 39 * @endcode
bogdanm 13:0645d8841f51 40 */
bogdanm 13:0645d8841f51 41 class DigitalOut {
bogdanm 13:0645d8841f51 42
bogdanm 13:0645d8841f51 43 public:
bogdanm 13:0645d8841f51 44 /** Create a DigitalOut connected to the specified pin
bogdanm 13:0645d8841f51 45 *
bogdanm 13:0645d8841f51 46 * @param pin DigitalOut pin to connect to
bogdanm 13:0645d8841f51 47 */
mbed_official 212:34d62c0b2af6 48 DigitalOut(PinName pin) : gpio() {
mbed_official 113:65a335a675de 49 gpio_init_out(&gpio, pin);
mbed_official 113:65a335a675de 50 }
mbed_official 113:65a335a675de 51
mbed_official 113:65a335a675de 52 /** Create a DigitalOut connected to the specified pin
mbed_official 113:65a335a675de 53 *
mbed_official 113:65a335a675de 54 * @param pin DigitalOut pin to connect to
mbed_official 113:65a335a675de 55 * @param value the initial pin value
mbed_official 113:65a335a675de 56 */
mbed_official 212:34d62c0b2af6 57 DigitalOut(PinName pin, int value) : gpio() {
mbed_official 113:65a335a675de 58 gpio_init_out_ex(&gpio, pin, value);
bogdanm 13:0645d8841f51 59 }
bogdanm 13:0645d8841f51 60
bogdanm 13:0645d8841f51 61 /** Set the output, specified as 0 or 1 (int)
bogdanm 13:0645d8841f51 62 *
bogdanm 13:0645d8841f51 63 * @param value An integer specifying the pin output value,
bogdanm 13:0645d8841f51 64 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
bogdanm 13:0645d8841f51 65 */
bogdanm 13:0645d8841f51 66 void write(int value) {
bogdanm 13:0645d8841f51 67 gpio_write(&gpio, value);
bogdanm 13:0645d8841f51 68 }
bogdanm 13:0645d8841f51 69
bogdanm 13:0645d8841f51 70 /** Return the output setting, represented as 0 or 1 (int)
bogdanm 13:0645d8841f51 71 *
bogdanm 13:0645d8841f51 72 * @returns
bogdanm 13:0645d8841f51 73 * an integer representing the output setting of the pin,
bogdanm 13:0645d8841f51 74 * 0 for logical 0, 1 for logical 1
bogdanm 13:0645d8841f51 75 */
bogdanm 13:0645d8841f51 76 int read() {
bogdanm 13:0645d8841f51 77 return gpio_read(&gpio);
bogdanm 13:0645d8841f51 78 }
bogdanm 13:0645d8841f51 79
mbed_official 455:8bc3a354916d 80 /** Return the output setting, represented as 0 or 1 (int)
mbed_official 455:8bc3a354916d 81 *
mbed_official 455:8bc3a354916d 82 * @returns
mbed_official 455:8bc3a354916d 83 * Non zero value if pin is connected to uc GPIO
mbed_official 455:8bc3a354916d 84 * 0 if gpio object was initialized with NC
mbed_official 455:8bc3a354916d 85 */
mbed_official 455:8bc3a354916d 86 int is_connected() {
mbed_official 455:8bc3a354916d 87 return gpio_is_connected(&gpio);
mbed_official 455:8bc3a354916d 88 }
mbed_official 455:8bc3a354916d 89
bogdanm 13:0645d8841f51 90 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 91 /** A shorthand for write()
bogdanm 13:0645d8841f51 92 */
bogdanm 13:0645d8841f51 93 DigitalOut& operator= (int value) {
bogdanm 13:0645d8841f51 94 write(value);
bogdanm 13:0645d8841f51 95 return *this;
bogdanm 13:0645d8841f51 96 }
bogdanm 13:0645d8841f51 97
bogdanm 13:0645d8841f51 98 DigitalOut& operator= (DigitalOut& rhs) {
bogdanm 13:0645d8841f51 99 write(rhs.read());
bogdanm 13:0645d8841f51 100 return *this;
bogdanm 13:0645d8841f51 101 }
bogdanm 13:0645d8841f51 102
bogdanm 13:0645d8841f51 103 /** A shorthand for read()
bogdanm 13:0645d8841f51 104 */
bogdanm 13:0645d8841f51 105 operator int() {
bogdanm 13:0645d8841f51 106 return read();
bogdanm 13:0645d8841f51 107 }
bogdanm 13:0645d8841f51 108 #endif
bogdanm 13:0645d8841f51 109
bogdanm 13:0645d8841f51 110 protected:
bogdanm 13:0645d8841f51 111 gpio_t gpio;
bogdanm 13:0645d8841f51 112 };
bogdanm 13:0645d8841f51 113
bogdanm 13:0645d8841f51 114 } // namespace mbed
bogdanm 13:0645d8841f51 115
bogdanm 13:0645d8841f51 116 #endif