Bernhard Filzmaier / mbed-src

mbed library sources

Fork of mbed-src by mbed official

cpp/DigitalOut.h@2:143cac498751, 2013-02-18 (annotated)

Committer:
emilmont
Date:
Mon Feb 18 11:44:18 2013 +0000
Revision:
2:143cac498751
Parent:
0:fd0d7bdfcdc2 
Update mbed sources to Rev 59

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
emilmont 2:143cac498751 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
emilmont 2:143cac498751 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 2:143cac498751 5 * you may not use this file except in compliance with the License.
emilmont 2:143cac498751 6 * You may obtain a copy of the License at
mbed_official 0:fd0d7bdfcdc2 7 *
emilmont 2:143cac498751 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:fd0d7bdfcdc2 9 *
emilmont 2:143cac498751 10 * Unless required by applicable law or agreed to in writing, software
emilmont 2:143cac498751 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 2:143cac498751 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 2:143cac498751 13 * See the License for the specific language governing permissions and
emilmont 2:143cac498751 14 * limitations under the License.
mbed_official 0:fd0d7bdfcdc2 15 */
mbed_official 0:fd0d7bdfcdc2 16 #ifndef MBED_DIGITALOUT_H
mbed_official 0:fd0d7bdfcdc2 17 #define MBED_DIGITALOUT_H
mbed_official 0:fd0d7bdfcdc2 18
mbed_official 0:fd0d7bdfcdc2 19 #include "platform.h"
mbed_official 0:fd0d7bdfcdc2 20 #include "gpio_api.h"
mbed_official 0:fd0d7bdfcdc2 21
mbed_official 0:fd0d7bdfcdc2 22 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 23
mbed_official 0:fd0d7bdfcdc2 24 /** A digital output, used for setting the state of a pin
mbed_official 0:fd0d7bdfcdc2 25 *
mbed_official 0:fd0d7bdfcdc2 26 * Example:
mbed_official 0:fd0d7bdfcdc2 27 * @code
mbed_official 0:fd0d7bdfcdc2 28 * // Toggle a LED
mbed_official 0:fd0d7bdfcdc2 29 * #include "mbed.h"
emilmont 2:143cac498751 30 *
mbed_official 0:fd0d7bdfcdc2 31 * DigitalOut led(LED1);
emilmont 2:143cac498751 32 *
mbed_official 0:fd0d7bdfcdc2 33 * int main() {
mbed_official 0:fd0d7bdfcdc2 34 * while(1) {
mbed_official 0:fd0d7bdfcdc2 35 * led = !led;
mbed_official 0:fd0d7bdfcdc2 36 * wait(0.2);
mbed_official 0:fd0d7bdfcdc2 37 * }
mbed_official 0:fd0d7bdfcdc2 38 * }
mbed_official 0:fd0d7bdfcdc2 39 * @endcode
mbed_official 0:fd0d7bdfcdc2 40 */
mbed_official 0:fd0d7bdfcdc2 41 class DigitalOut {
mbed_official 0:fd0d7bdfcdc2 42
mbed_official 0:fd0d7bdfcdc2 43 public:
mbed_official 0:fd0d7bdfcdc2 44 /** Create a DigitalOut connected to the specified pin
mbed_official 0:fd0d7bdfcdc2 45 *
mbed_official 0:fd0d7bdfcdc2 46 * @param pin DigitalOut pin to connect to
mbed_official 0:fd0d7bdfcdc2 47 */
mbed_official 0:fd0d7bdfcdc2 48 DigitalOut(PinName pin) {
mbed_official 0:fd0d7bdfcdc2 49 gpio_init(&gpio, pin, PIN_OUTPUT);
mbed_official 0:fd0d7bdfcdc2 50 }
emilmont 2:143cac498751 51
mbed_official 0:fd0d7bdfcdc2 52 /** Set the output, specified as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 53 *
emilmont 2:143cac498751 54 * @param value An integer specifying the pin output value,
emilmont 2:143cac498751 55 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
mbed_official 0:fd0d7bdfcdc2 56 */
mbed_official 0:fd0d7bdfcdc2 57 void write(int value) {
mbed_official 0:fd0d7bdfcdc2 58 gpio_write(&gpio, value);
mbed_official 0:fd0d7bdfcdc2 59 }
emilmont 2:143cac498751 60
mbed_official 0:fd0d7bdfcdc2 61 /** Return the output setting, represented as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 62 *
mbed_official 0:fd0d7bdfcdc2 63 * @returns
emilmont 2:143cac498751 64 * an integer representing the output setting of the pin,
mbed_official 0:fd0d7bdfcdc2 65 * 0 for logical 0, 1 for logical 1
mbed_official 0:fd0d7bdfcdc2 66 */
mbed_official 0:fd0d7bdfcdc2 67 int read() {
mbed_official 0:fd0d7bdfcdc2 68 return gpio_read(&gpio);
mbed_official 0:fd0d7bdfcdc2 69 }
emilmont 2:143cac498751 70
mbed_official 0:fd0d7bdfcdc2 71 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 72 /** A shorthand for write()
mbed_official 0:fd0d7bdfcdc2 73 */
mbed_official 0:fd0d7bdfcdc2 74 DigitalOut& operator= (int value) {
mbed_official 0:fd0d7bdfcdc2 75 write(value);
mbed_official 0:fd0d7bdfcdc2 76 return *this;
mbed_official 0:fd0d7bdfcdc2 77 }
emilmont 2:143cac498751 78
mbed_official 0:fd0d7bdfcdc2 79 DigitalOut& operator= (DigitalOut& rhs) {
mbed_official 0:fd0d7bdfcdc2 80 write(rhs.read());
mbed_official 0:fd0d7bdfcdc2 81 return *this;
mbed_official 0:fd0d7bdfcdc2 82 }
emilmont 2:143cac498751 83
mbed_official 0:fd0d7bdfcdc2 84 /** A shorthand for read()
mbed_official 0:fd0d7bdfcdc2 85 */
mbed_official 0:fd0d7bdfcdc2 86 operator int() {
mbed_official 0:fd0d7bdfcdc2 87 return read();
mbed_official 0:fd0d7bdfcdc2 88 }
mbed_official 0:fd0d7bdfcdc2 89 #endif
mbed_official 0:fd0d7bdfcdc2 90
mbed_official 0:fd0d7bdfcdc2 91 protected:
mbed_official 0:fd0d7bdfcdc2 92 gpio_t gpio;
mbed_official 0:fd0d7bdfcdc2 93 };
mbed_official 0:fd0d7bdfcdc2 94
mbed_official 0:fd0d7bdfcdc2 95 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 96
emilmont 2:143cac498751 97 #endif