Steve Kim / mbed-src

mbed library sources(for async_print)

Dependents:   AsyncPrint

Fork of mbed-src by mbed official

cpp/DigitalOut.h@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #ifndef MBED_DIGITALOUT_H
mbed_official 0:fd0d7bdfcdc2 23 #define MBED_DIGITALOUT_H
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 #include "platform.h"
mbed_official 0:fd0d7bdfcdc2 26 #include "gpio_api.h"
mbed_official 0:fd0d7bdfcdc2 27
mbed_official 0:fd0d7bdfcdc2 28 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 29
mbed_official 0:fd0d7bdfcdc2 30 /** A digital output, used for setting the state of a pin
mbed_official 0:fd0d7bdfcdc2 31 *
mbed_official 0:fd0d7bdfcdc2 32 * Example:
mbed_official 0:fd0d7bdfcdc2 33 * @code
mbed_official 0:fd0d7bdfcdc2 34 * // Toggle a LED
mbed_official 0:fd0d7bdfcdc2 35 * #include "mbed.h"
mbed_official 0:fd0d7bdfcdc2 36 *
mbed_official 0:fd0d7bdfcdc2 37 * DigitalOut led(LED1);
mbed_official 0:fd0d7bdfcdc2 38 *
mbed_official 0:fd0d7bdfcdc2 39 * int main() {
mbed_official 0:fd0d7bdfcdc2 40 * while(1) {
mbed_official 0:fd0d7bdfcdc2 41 * led = !led;
mbed_official 0:fd0d7bdfcdc2 42 * wait(0.2);
mbed_official 0:fd0d7bdfcdc2 43 * }
mbed_official 0:fd0d7bdfcdc2 44 * }
mbed_official 0:fd0d7bdfcdc2 45 * @endcode
mbed_official 0:fd0d7bdfcdc2 46 */
mbed_official 0:fd0d7bdfcdc2 47 class DigitalOut {
mbed_official 0:fd0d7bdfcdc2 48
mbed_official 0:fd0d7bdfcdc2 49 public:
mbed_official 0:fd0d7bdfcdc2 50 /** Create a DigitalOut connected to the specified pin
mbed_official 0:fd0d7bdfcdc2 51 *
mbed_official 0:fd0d7bdfcdc2 52 * @param pin DigitalOut pin to connect to
mbed_official 0:fd0d7bdfcdc2 53 */
mbed_official 0:fd0d7bdfcdc2 54 DigitalOut(PinName pin) {
mbed_official 0:fd0d7bdfcdc2 55 gpio_init(&gpio, pin, PIN_OUTPUT);
mbed_official 0:fd0d7bdfcdc2 56 }
mbed_official 0:fd0d7bdfcdc2 57
mbed_official 0:fd0d7bdfcdc2 58 /** Set the output, specified as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 59 *
mbed_official 0:fd0d7bdfcdc2 60 * @param value An integer specifying the pin output value,
mbed_official 0:fd0d7bdfcdc2 61 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
mbed_official 0:fd0d7bdfcdc2 62 */
mbed_official 0:fd0d7bdfcdc2 63 void write(int value) {
mbed_official 0:fd0d7bdfcdc2 64 gpio_write(&gpio, value);
mbed_official 0:fd0d7bdfcdc2 65 }
mbed_official 0:fd0d7bdfcdc2 66
mbed_official 0:fd0d7bdfcdc2 67 /** Return the output setting, represented as 0 or 1 (int)
mbed_official 0:fd0d7bdfcdc2 68 *
mbed_official 0:fd0d7bdfcdc2 69 * @returns
mbed_official 0:fd0d7bdfcdc2 70 * an integer representing the output setting of the pin,
mbed_official 0:fd0d7bdfcdc2 71 * 0 for logical 0, 1 for logical 1
mbed_official 0:fd0d7bdfcdc2 72 */
mbed_official 0:fd0d7bdfcdc2 73 int read() {
mbed_official 0:fd0d7bdfcdc2 74 return gpio_read(&gpio);
mbed_official 0:fd0d7bdfcdc2 75 }
mbed_official 0:fd0d7bdfcdc2 76
mbed_official 0:fd0d7bdfcdc2 77 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 78 /** A shorthand for write()
mbed_official 0:fd0d7bdfcdc2 79 */
mbed_official 0:fd0d7bdfcdc2 80 DigitalOut& operator= (int value) {
mbed_official 0:fd0d7bdfcdc2 81 write(value);
mbed_official 0:fd0d7bdfcdc2 82 return *this;
mbed_official 0:fd0d7bdfcdc2 83 }
mbed_official 0:fd0d7bdfcdc2 84
mbed_official 0:fd0d7bdfcdc2 85 DigitalOut& operator= (DigitalOut& rhs) {
mbed_official 0:fd0d7bdfcdc2 86 write(rhs.read());
mbed_official 0:fd0d7bdfcdc2 87 return *this;
mbed_official 0:fd0d7bdfcdc2 88 }
mbed_official 0:fd0d7bdfcdc2 89
mbed_official 0:fd0d7bdfcdc2 90 /** A shorthand for read()
mbed_official 0:fd0d7bdfcdc2 91 */
mbed_official 0:fd0d7bdfcdc2 92 operator int() {
mbed_official 0:fd0d7bdfcdc2 93 return read();
mbed_official 0:fd0d7bdfcdc2 94 }
mbed_official 0:fd0d7bdfcdc2 95 #endif
mbed_official 0:fd0d7bdfcdc2 96
mbed_official 0:fd0d7bdfcdc2 97 protected:
mbed_official 0:fd0d7bdfcdc2 98 gpio_t gpio;
mbed_official 0:fd0d7bdfcdc2 99 };
mbed_official 0:fd0d7bdfcdc2 100
mbed_official 0:fd0d7bdfcdc2 101 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 102
mbed_official 0:fd0d7bdfcdc2 103 #endif