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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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@113:65a335a675de, 2014-03-10 (annotated)

Committer:
mbed_official
Date:
Mon Mar 10 11:30:07 2014 +0000
Revision:
113:65a335a675de
Parent:
13:0645d8841f51
Child:
212:34d62c0b2af6
Synchronized with git revision 423ddcb86e83e2e0d599ca7106d436eb3c47e6dd



Full URL: https://github.com/mbedmicro/mbed/commit/423ddcb86e83e2e0d599ca7106d436eb3c47e6dd/



proposed change of gpio_api (new update pull request)

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 */
bogdanm 13:0645d8841f51 48 DigitalOut(PinName pin) {
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 113:65a335a675de 57 DigitalOut(PinName pin, int value){
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
bogdanm 13:0645d8841f51 80 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 81 /** A shorthand for write()
bogdanm 13:0645d8841f51 82 */
bogdanm 13:0645d8841f51 83 DigitalOut& operator= (int value) {
bogdanm 13:0645d8841f51 84 write(value);
bogdanm 13:0645d8841f51 85 return *this;
bogdanm 13:0645d8841f51 86 }
bogdanm 13:0645d8841f51 87
bogdanm 13:0645d8841f51 88 DigitalOut& operator= (DigitalOut& rhs) {
bogdanm 13:0645d8841f51 89 write(rhs.read());
bogdanm 13:0645d8841f51 90 return *this;
bogdanm 13:0645d8841f51 91 }
bogdanm 13:0645d8841f51 92
bogdanm 13:0645d8841f51 93 /** A shorthand for read()
bogdanm 13:0645d8841f51 94 */
bogdanm 13:0645d8841f51 95 operator int() {
bogdanm 13:0645d8841f51 96 return read();
bogdanm 13:0645d8841f51 97 }
bogdanm 13:0645d8841f51 98 #endif
bogdanm 13:0645d8841f51 99
bogdanm 13:0645d8841f51 100 protected:
bogdanm 13:0645d8841f51 101 gpio_t gpio;
bogdanm 13:0645d8841f51 102 };
bogdanm 13:0645d8841f51 103
bogdanm 13:0645d8841f51 104 } // namespace mbed
bogdanm 13:0645d8841f51 105
bogdanm 13:0645d8841f51 106 #endif