Basic fading in and out of leds with light sensor.

Dependencies:   mbed

Committer:
mturner5
Date:
Mon Sep 19 03:24:58 2016 +0000
Revision:
0:cf7af2656659
Basic v1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mturner5 0:cf7af2656659 1 /* mbed Microcontroller Library
mturner5 0:cf7af2656659 2 * Copyright (c) 2006-2013 ARM Limited
mturner5 0:cf7af2656659 3 *
mturner5 0:cf7af2656659 4 * Licensed under the Apache License, Version 2.0 (the "License");
mturner5 0:cf7af2656659 5 * you may not use this file except in compliance with the License.
mturner5 0:cf7af2656659 6 * You may obtain a copy of the License at
mturner5 0:cf7af2656659 7 *
mturner5 0:cf7af2656659 8 * http://www.apache.org/licenses/LICENSE-2.0
mturner5 0:cf7af2656659 9 *
mturner5 0:cf7af2656659 10 * Unless required by applicable law or agreed to in writing, software
mturner5 0:cf7af2656659 11 * distributed under the License is distributed on an "AS IS" BASIS,
mturner5 0:cf7af2656659 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mturner5 0:cf7af2656659 13 * See the License for the specific language governing permissions and
mturner5 0:cf7af2656659 14 * limitations under the License.
mturner5 0:cf7af2656659 15 */
mturner5 0:cf7af2656659 16 #ifndef MBED_DIGITALOUT_H
mturner5 0:cf7af2656659 17 #define MBED_DIGITALOUT_H
mturner5 0:cf7af2656659 18
mturner5 0:cf7af2656659 19 #include "platform.h"
mturner5 0:cf7af2656659 20 #include "gpio_api.h"
mturner5 0:cf7af2656659 21
mturner5 0:cf7af2656659 22 namespace mbed {
mturner5 0:cf7af2656659 23
mturner5 0:cf7af2656659 24 /** A digital output, used for setting the state of a pin
mturner5 0:cf7af2656659 25 *
mturner5 0:cf7af2656659 26 * Example:
mturner5 0:cf7af2656659 27 * @code
mturner5 0:cf7af2656659 28 * // Toggle a LED
mturner5 0:cf7af2656659 29 * #include "mbed.h"
mturner5 0:cf7af2656659 30 *
mturner5 0:cf7af2656659 31 * DigitalOut led(LED1);
mturner5 0:cf7af2656659 32 *
mturner5 0:cf7af2656659 33 * int main() {
mturner5 0:cf7af2656659 34 * while(1) {
mturner5 0:cf7af2656659 35 * led = !led;
mturner5 0:cf7af2656659 36 * wait(0.2);
mturner5 0:cf7af2656659 37 * }
mturner5 0:cf7af2656659 38 * }
mturner5 0:cf7af2656659 39 * @endcode
mturner5 0:cf7af2656659 40 */
mturner5 0:cf7af2656659 41 class DigitalOut {
mturner5 0:cf7af2656659 42
mturner5 0:cf7af2656659 43 public:
mturner5 0:cf7af2656659 44 /** Create a DigitalOut connected to the specified pin
mturner5 0:cf7af2656659 45 *
mturner5 0:cf7af2656659 46 * @param pin DigitalOut pin to connect to
mturner5 0:cf7af2656659 47 */
mturner5 0:cf7af2656659 48 DigitalOut(PinName pin) : gpio() {
mturner5 0:cf7af2656659 49 gpio_init_out(&gpio, pin);
mturner5 0:cf7af2656659 50 }
mturner5 0:cf7af2656659 51
mturner5 0:cf7af2656659 52 /** Create a DigitalOut connected to the specified pin
mturner5 0:cf7af2656659 53 *
mturner5 0:cf7af2656659 54 * @param pin DigitalOut pin to connect to
mturner5 0:cf7af2656659 55 * @param value the initial pin value
mturner5 0:cf7af2656659 56 */
mturner5 0:cf7af2656659 57 DigitalOut(PinName pin, int value) : gpio() {
mturner5 0:cf7af2656659 58 gpio_init_out_ex(&gpio, pin, value);
mturner5 0:cf7af2656659 59 }
mturner5 0:cf7af2656659 60
mturner5 0:cf7af2656659 61 /** Set the output, specified as 0 or 1 (int)
mturner5 0:cf7af2656659 62 *
mturner5 0:cf7af2656659 63 * @param value An integer specifying the pin output value,
mturner5 0:cf7af2656659 64 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
mturner5 0:cf7af2656659 65 */
mturner5 0:cf7af2656659 66 void write(int value) {
mturner5 0:cf7af2656659 67 gpio_write(&gpio, value);
mturner5 0:cf7af2656659 68 }
mturner5 0:cf7af2656659 69
mturner5 0:cf7af2656659 70 /** Return the output setting, represented as 0 or 1 (int)
mturner5 0:cf7af2656659 71 *
mturner5 0:cf7af2656659 72 * @returns
mturner5 0:cf7af2656659 73 * an integer representing the output setting of the pin,
mturner5 0:cf7af2656659 74 * 0 for logical 0, 1 for logical 1
mturner5 0:cf7af2656659 75 */
mturner5 0:cf7af2656659 76 int read() {
mturner5 0:cf7af2656659 77 return gpio_read(&gpio);
mturner5 0:cf7af2656659 78 }
mturner5 0:cf7af2656659 79
mturner5 0:cf7af2656659 80 #ifdef MBED_OPERATORS
mturner5 0:cf7af2656659 81 /** A shorthand for write()
mturner5 0:cf7af2656659 82 */
mturner5 0:cf7af2656659 83 DigitalOut& operator= (int value) {
mturner5 0:cf7af2656659 84 write(value);
mturner5 0:cf7af2656659 85 return *this;
mturner5 0:cf7af2656659 86 }
mturner5 0:cf7af2656659 87
mturner5 0:cf7af2656659 88 DigitalOut& operator= (DigitalOut& rhs) {
mturner5 0:cf7af2656659 89 write(rhs.read());
mturner5 0:cf7af2656659 90 return *this;
mturner5 0:cf7af2656659 91 }
mturner5 0:cf7af2656659 92
mturner5 0:cf7af2656659 93 /** A shorthand for read()
mturner5 0:cf7af2656659 94 */
mturner5 0:cf7af2656659 95 operator int() {
mturner5 0:cf7af2656659 96 return read();
mturner5 0:cf7af2656659 97 }
mturner5 0:cf7af2656659 98 #endif
mturner5 0:cf7af2656659 99
mturner5 0:cf7af2656659 100 protected:
mturner5 0:cf7af2656659 101 gpio_t gpio;
mturner5 0:cf7af2656659 102 };
mturner5 0:cf7af2656659 103
mturner5 0:cf7af2656659 104 } // namespace mbed
mturner5 0:cf7af2656659 105
mturner5 0:cf7af2656659 106 #endif