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_DIGITALINOUT_H
mturner5 0:cf7af2656659 17 #define MBED_DIGITALINOUT_H
mturner5 0:cf7af2656659 18
mturner5 0:cf7af2656659 19 #include "platform.h"
mturner5 0:cf7af2656659 20
mturner5 0:cf7af2656659 21 #include "gpio_api.h"
mturner5 0:cf7af2656659 22
mturner5 0:cf7af2656659 23 namespace mbed {
mturner5 0:cf7af2656659 24
mturner5 0:cf7af2656659 25 /** A digital input/output, used for setting or reading a bi-directional pin
mturner5 0:cf7af2656659 26 */
mturner5 0:cf7af2656659 27 class DigitalInOut {
mturner5 0:cf7af2656659 28
mturner5 0:cf7af2656659 29 public:
mturner5 0:cf7af2656659 30 /** Create a DigitalInOut connected to the specified pin
mturner5 0:cf7af2656659 31 *
mturner5 0:cf7af2656659 32 * @param pin DigitalInOut pin to connect to
mturner5 0:cf7af2656659 33 */
mturner5 0:cf7af2656659 34 DigitalInOut(PinName pin) : gpio() {
mturner5 0:cf7af2656659 35 gpio_init_in(&gpio, pin);
mturner5 0:cf7af2656659 36 }
mturner5 0:cf7af2656659 37
mturner5 0:cf7af2656659 38 /** Create a DigitalInOut connected to the specified pin
mturner5 0:cf7af2656659 39 *
mturner5 0:cf7af2656659 40 * @param pin DigitalInOut pin to connect to
mturner5 0:cf7af2656659 41 * @param direction the initial direction of the pin
mturner5 0:cf7af2656659 42 * @param mode the initial mode of the pin
mturner5 0:cf7af2656659 43 * @param value the initial value of the pin if is an output
mturner5 0:cf7af2656659 44 */
mturner5 0:cf7af2656659 45 DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() {
mturner5 0:cf7af2656659 46 gpio_init_inout(&gpio, pin, direction, mode, value);
mturner5 0:cf7af2656659 47 }
mturner5 0:cf7af2656659 48
mturner5 0:cf7af2656659 49 /** Set the output, specified as 0 or 1 (int)
mturner5 0:cf7af2656659 50 *
mturner5 0:cf7af2656659 51 * @param value An integer specifying the pin output value,
mturner5 0:cf7af2656659 52 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
mturner5 0:cf7af2656659 53 */
mturner5 0:cf7af2656659 54 void write(int value) {
mturner5 0:cf7af2656659 55 gpio_write(&gpio, value);
mturner5 0:cf7af2656659 56 }
mturner5 0:cf7af2656659 57
mturner5 0:cf7af2656659 58 /** Return the output setting, represented as 0 or 1 (int)
mturner5 0:cf7af2656659 59 *
mturner5 0:cf7af2656659 60 * @returns
mturner5 0:cf7af2656659 61 * an integer representing the output setting of the pin if it is an output,
mturner5 0:cf7af2656659 62 * or read the input if set as an input
mturner5 0:cf7af2656659 63 */
mturner5 0:cf7af2656659 64 int read() {
mturner5 0:cf7af2656659 65 return gpio_read(&gpio);
mturner5 0:cf7af2656659 66 }
mturner5 0:cf7af2656659 67
mturner5 0:cf7af2656659 68 /** Set as an output
mturner5 0:cf7af2656659 69 */
mturner5 0:cf7af2656659 70 void output() {
mturner5 0:cf7af2656659 71 gpio_dir(&gpio, PIN_OUTPUT);
mturner5 0:cf7af2656659 72 }
mturner5 0:cf7af2656659 73
mturner5 0:cf7af2656659 74 /** Set as an input
mturner5 0:cf7af2656659 75 */
mturner5 0:cf7af2656659 76 void input() {
mturner5 0:cf7af2656659 77 gpio_dir(&gpio, PIN_INPUT);
mturner5 0:cf7af2656659 78 }
mturner5 0:cf7af2656659 79
mturner5 0:cf7af2656659 80 /** Set the input pin mode
mturner5 0:cf7af2656659 81 *
mturner5 0:cf7af2656659 82 * @param mode PullUp, PullDown, PullNone, OpenDrain
mturner5 0:cf7af2656659 83 */
mturner5 0:cf7af2656659 84 void mode(PinMode pull) {
mturner5 0:cf7af2656659 85 gpio_mode(&gpio, pull);
mturner5 0:cf7af2656659 86 }
mturner5 0:cf7af2656659 87
mturner5 0:cf7af2656659 88 #ifdef MBED_OPERATORS
mturner5 0:cf7af2656659 89 /** A shorthand for write()
mturner5 0:cf7af2656659 90 */
mturner5 0:cf7af2656659 91 DigitalInOut& operator= (int value) {
mturner5 0:cf7af2656659 92 write(value);
mturner5 0:cf7af2656659 93 return *this;
mturner5 0:cf7af2656659 94 }
mturner5 0:cf7af2656659 95
mturner5 0:cf7af2656659 96 DigitalInOut& operator= (DigitalInOut& rhs) {
mturner5 0:cf7af2656659 97 write(rhs.read());
mturner5 0:cf7af2656659 98 return *this;
mturner5 0:cf7af2656659 99 }
mturner5 0:cf7af2656659 100
mturner5 0:cf7af2656659 101 /** A shorthand for read()
mturner5 0:cf7af2656659 102 */
mturner5 0:cf7af2656659 103 operator int() {
mturner5 0:cf7af2656659 104 return read();
mturner5 0:cf7af2656659 105 }
mturner5 0:cf7af2656659 106 #endif
mturner5 0:cf7af2656659 107
mturner5 0:cf7af2656659 108 protected:
mturner5 0:cf7af2656659 109 gpio_t gpio;
mturner5 0:cf7af2656659 110 };
mturner5 0:cf7af2656659 111
mturner5 0:cf7af2656659 112 } // namespace mbed
mturner5 0:cf7af2656659 113
mturner5 0:cf7af2656659 114 #endif