M J / mbed-src

logi loader fork from jpiat

Fork of mbed-src by Jonathan Piat

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