Micah B / mbed

mbed

Dependents:   DHTSensor_Test K64F_eCompass_OneNET_JW

DigitalInOut.h@0:2cc6bb4d7fea, 2015-02-25 (annotated)

Committer:
mbotkinl
Date:
Wed Feb 25 20:22:22 2015 +0000
Revision:
0:2cc6bb4d7fea
Working code to read Temperature and Humidity readings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbotkinl 0:2cc6bb4d7fea 1 /* mbed Microcontroller Library
mbotkinl 0:2cc6bb4d7fea 2 * Copyright (c) 2006-2013 ARM Limited
mbotkinl 0:2cc6bb4d7fea 3 *
mbotkinl 0:2cc6bb4d7fea 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbotkinl 0:2cc6bb4d7fea 5 * you may not use this file except in compliance with the License.
mbotkinl 0:2cc6bb4d7fea 6 * You may obtain a copy of the License at
mbotkinl 0:2cc6bb4d7fea 7 *
mbotkinl 0:2cc6bb4d7fea 8 * http://www.apache.org/licenses/LICENSE-2.0
mbotkinl 0:2cc6bb4d7fea 9 *
mbotkinl 0:2cc6bb4d7fea 10 * Unless required by applicable law or agreed to in writing, software
mbotkinl 0:2cc6bb4d7fea 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbotkinl 0:2cc6bb4d7fea 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbotkinl 0:2cc6bb4d7fea 13 * See the License for the specific language governing permissions and
mbotkinl 0:2cc6bb4d7fea 14 * limitations under the License.
mbotkinl 0:2cc6bb4d7fea 15 */
mbotkinl 0:2cc6bb4d7fea 16 #ifndef MBED_DIGITALINOUT_H
mbotkinl 0:2cc6bb4d7fea 17 #define MBED_DIGITALINOUT_H
mbotkinl 0:2cc6bb4d7fea 18
mbotkinl 0:2cc6bb4d7fea 19 #include "platform.h"
mbotkinl 0:2cc6bb4d7fea 20
mbotkinl 0:2cc6bb4d7fea 21 #include "gpio_api.h"
mbotkinl 0:2cc6bb4d7fea 22
mbotkinl 0:2cc6bb4d7fea 23 namespace mbed {
mbotkinl 0:2cc6bb4d7fea 24
mbotkinl 0:2cc6bb4d7fea 25 /** A digital input/output, used for setting or reading a bi-directional pin
mbotkinl 0:2cc6bb4d7fea 26 */
mbotkinl 0:2cc6bb4d7fea 27 class DigitalInOut {
mbotkinl 0:2cc6bb4d7fea 28
mbotkinl 0:2cc6bb4d7fea 29 public:
mbotkinl 0:2cc6bb4d7fea 30 /** Create a DigitalInOut connected to the specified pin
mbotkinl 0:2cc6bb4d7fea 31 *
mbotkinl 0:2cc6bb4d7fea 32 * @param pin DigitalInOut pin to connect to
mbotkinl 0:2cc6bb4d7fea 33 */
mbotkinl 0:2cc6bb4d7fea 34 DigitalInOut(PinName pin) : gpio() {
mbotkinl 0:2cc6bb4d7fea 35 gpio_init_in(&gpio, pin);
mbotkinl 0:2cc6bb4d7fea 36 }
mbotkinl 0:2cc6bb4d7fea 37
mbotkinl 0:2cc6bb4d7fea 38 /** Create a DigitalInOut connected to the specified pin
mbotkinl 0:2cc6bb4d7fea 39 *
mbotkinl 0:2cc6bb4d7fea 40 * @param pin DigitalInOut pin to connect to
mbotkinl 0:2cc6bb4d7fea 41 * @param direction the initial direction of the pin
mbotkinl 0:2cc6bb4d7fea 42 * @param mode the initial mode of the pin
mbotkinl 0:2cc6bb4d7fea 43 * @param value the initial value of the pin if is an output
mbotkinl 0:2cc6bb4d7fea 44 */
mbotkinl 0:2cc6bb4d7fea 45 DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() {
mbotkinl 0:2cc6bb4d7fea 46 gpio_init_inout(&gpio, pin, direction, mode, value);
mbotkinl 0:2cc6bb4d7fea 47 }
mbotkinl 0:2cc6bb4d7fea 48
mbotkinl 0:2cc6bb4d7fea 49 /** Set the output, specified as 0 or 1 (int)
mbotkinl 0:2cc6bb4d7fea 50 *
mbotkinl 0:2cc6bb4d7fea 51 * @param value An integer specifying the pin output value,
mbotkinl 0:2cc6bb4d7fea 52 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
mbotkinl 0:2cc6bb4d7fea 53 */
mbotkinl 0:2cc6bb4d7fea 54 void write(int value) {
mbotkinl 0:2cc6bb4d7fea 55 gpio_write(&gpio, value);
mbotkinl 0:2cc6bb4d7fea 56 }
mbotkinl 0:2cc6bb4d7fea 57
mbotkinl 0:2cc6bb4d7fea 58 /** Return the output setting, represented as 0 or 1 (int)
mbotkinl 0:2cc6bb4d7fea 59 *
mbotkinl 0:2cc6bb4d7fea 60 * @returns
mbotkinl 0:2cc6bb4d7fea 61 * an integer representing the output setting of the pin if it is an output,
mbotkinl 0:2cc6bb4d7fea 62 * or read the input if set as an input
mbotkinl 0:2cc6bb4d7fea 63 */
mbotkinl 0:2cc6bb4d7fea 64 int read() {
mbotkinl 0:2cc6bb4d7fea 65 return gpio_read(&gpio);
mbotkinl 0:2cc6bb4d7fea 66 }
mbotkinl 0:2cc6bb4d7fea 67
mbotkinl 0:2cc6bb4d7fea 68 /** Set as an output
mbotkinl 0:2cc6bb4d7fea 69 */
mbotkinl 0:2cc6bb4d7fea 70 void output() {
mbotkinl 0:2cc6bb4d7fea 71 gpio_dir(&gpio, PIN_OUTPUT);
mbotkinl 0:2cc6bb4d7fea 72 }
mbotkinl 0:2cc6bb4d7fea 73
mbotkinl 0:2cc6bb4d7fea 74 /** Set as an input
mbotkinl 0:2cc6bb4d7fea 75 */
mbotkinl 0:2cc6bb4d7fea 76 void input() {
mbotkinl 0:2cc6bb4d7fea 77 gpio_dir(&gpio, PIN_INPUT);
mbotkinl 0:2cc6bb4d7fea 78 }
mbotkinl 0:2cc6bb4d7fea 79
mbotkinl 0:2cc6bb4d7fea 80 /** Set the input pin mode
mbotkinl 0:2cc6bb4d7fea 81 *
mbotkinl 0:2cc6bb4d7fea 82 * @param mode PullUp, PullDown, PullNone, OpenDrain
mbotkinl 0:2cc6bb4d7fea 83 */
mbotkinl 0:2cc6bb4d7fea 84 void mode(PinMode pull) {
mbotkinl 0:2cc6bb4d7fea 85 gpio_mode(&gpio, pull);
mbotkinl 0:2cc6bb4d7fea 86 }
mbotkinl 0:2cc6bb4d7fea 87
mbotkinl 0:2cc6bb4d7fea 88 #ifdef MBED_OPERATORS
mbotkinl 0:2cc6bb4d7fea 89 /** A shorthand for write()
mbotkinl 0:2cc6bb4d7fea 90 */
mbotkinl 0:2cc6bb4d7fea 91 DigitalInOut& operator= (int value) {
mbotkinl 0:2cc6bb4d7fea 92 write(value);
mbotkinl 0:2cc6bb4d7fea 93 return *this;
mbotkinl 0:2cc6bb4d7fea 94 }
mbotkinl 0:2cc6bb4d7fea 95
mbotkinl 0:2cc6bb4d7fea 96 DigitalInOut& operator= (DigitalInOut& rhs) {
mbotkinl 0:2cc6bb4d7fea 97 write(rhs.read());
mbotkinl 0:2cc6bb4d7fea 98 return *this;
mbotkinl 0:2cc6bb4d7fea 99 }
mbotkinl 0:2cc6bb4d7fea 100
mbotkinl 0:2cc6bb4d7fea 101 /** A shorthand for read()
mbotkinl 0:2cc6bb4d7fea 102 */
mbotkinl 0:2cc6bb4d7fea 103 operator int() {
mbotkinl 0:2cc6bb4d7fea 104 return read();
mbotkinl 0:2cc6bb4d7fea 105 }
mbotkinl 0:2cc6bb4d7fea 106 #endif
mbotkinl 0:2cc6bb4d7fea 107
mbotkinl 0:2cc6bb4d7fea 108 protected:
mbotkinl 0:2cc6bb4d7fea 109 gpio_t gpio;
mbotkinl 0:2cc6bb4d7fea 110 };
mbotkinl 0:2cc6bb4d7fea 111
mbotkinl 0:2cc6bb4d7fea 112 } // namespace mbed
mbotkinl 0:2cc6bb4d7fea 113
mbotkinl 0:2cc6bb4d7fea 114 #endif