mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Dependents:   hello SerialTestv11 SerialTestv12 Sierpinski ... more

mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

drivers/PortInOut.h@157:e7ca05fa8600, 2017-11-09 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 09 11:14:10 2017 +0000
Revision:
157:e7ca05fa8600
Parent:
156:ff21514d8981
Child:
170:e95d10626187
Release 155 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 156:ff21514d8981 3 *
AnnaBridge 156:ff21514d8981 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 156:ff21514d8981 5 * you may not use this file except in compliance with the License.
AnnaBridge 156:ff21514d8981 6 * You may obtain a copy of the License at
AnnaBridge 156:ff21514d8981 7 *
AnnaBridge 156:ff21514d8981 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 156:ff21514d8981 9 *
AnnaBridge 156:ff21514d8981 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 156:ff21514d8981 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 156:ff21514d8981 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 156:ff21514d8981 13 * See the License for the specific language governing permissions and
AnnaBridge 156:ff21514d8981 14 * limitations under the License.
AnnaBridge 156:ff21514d8981 15 */
AnnaBridge 156:ff21514d8981 16 #ifndef MBED_PORTINOUT_H
AnnaBridge 156:ff21514d8981 17 #define MBED_PORTINOUT_H
AnnaBridge 156:ff21514d8981 18
AnnaBridge 156:ff21514d8981 19 #include "platform/platform.h"
AnnaBridge 156:ff21514d8981 20
AnnaBridge 156:ff21514d8981 21 #if defined (DEVICE_PORTINOUT) || defined(DOXYGEN_ONLY)
AnnaBridge 156:ff21514d8981 22
AnnaBridge 156:ff21514d8981 23 #include "hal/port_api.h"
AnnaBridge 156:ff21514d8981 24 #include "platform/mbed_critical.h"
AnnaBridge 156:ff21514d8981 25
AnnaBridge 156:ff21514d8981 26 namespace mbed {
AnnaBridge 156:ff21514d8981 27 /** \addtogroup drivers */
AnnaBridge 156:ff21514d8981 28
AnnaBridge 156:ff21514d8981 29 /** A multiple pin digital in/out used to set/read multiple bi-directional pins
AnnaBridge 156:ff21514d8981 30 *
AnnaBridge 156:ff21514d8981 31 * @note Synchronization level: Interrupt safe
AnnaBridge 156:ff21514d8981 32 * @ingroup drivers
AnnaBridge 156:ff21514d8981 33 */
AnnaBridge 156:ff21514d8981 34 class PortInOut {
AnnaBridge 156:ff21514d8981 35 public:
AnnaBridge 156:ff21514d8981 36
AnnaBridge 156:ff21514d8981 37 /** Create an PortInOut, connected to the specified port
AnnaBridge 156:ff21514d8981 38 *
AnnaBridge 156:ff21514d8981 39 * @param port Port to connect to (Port0-Port5)
AnnaBridge 156:ff21514d8981 40 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
AnnaBridge 156:ff21514d8981 41 */
AnnaBridge 156:ff21514d8981 42 PortInOut(PortName port, int mask = 0xFFFFFFFF) {
AnnaBridge 156:ff21514d8981 43 core_util_critical_section_enter();
AnnaBridge 156:ff21514d8981 44 port_init(&_port, port, mask, PIN_INPUT);
AnnaBridge 156:ff21514d8981 45 core_util_critical_section_exit();
AnnaBridge 156:ff21514d8981 46 }
AnnaBridge 156:ff21514d8981 47
AnnaBridge 156:ff21514d8981 48 /** Write the value to the output port
AnnaBridge 156:ff21514d8981 49 *
AnnaBridge 156:ff21514d8981 50 * @param value An integer specifying a bit to write for every corresponding port pin
AnnaBridge 156:ff21514d8981 51 */
AnnaBridge 156:ff21514d8981 52 void write(int value) {
AnnaBridge 156:ff21514d8981 53 port_write(&_port, value);
AnnaBridge 156:ff21514d8981 54 }
AnnaBridge 156:ff21514d8981 55
AnnaBridge 156:ff21514d8981 56 /** Read the value currently output on the port
AnnaBridge 156:ff21514d8981 57 *
AnnaBridge 156:ff21514d8981 58 * @returns
AnnaBridge 156:ff21514d8981 59 * An integer with each bit corresponding to associated port pin setting
AnnaBridge 156:ff21514d8981 60 */
AnnaBridge 156:ff21514d8981 61 int read() {
AnnaBridge 156:ff21514d8981 62 return port_read(&_port);
AnnaBridge 156:ff21514d8981 63 }
AnnaBridge 156:ff21514d8981 64
AnnaBridge 156:ff21514d8981 65 /** Set as an output
AnnaBridge 156:ff21514d8981 66 */
AnnaBridge 156:ff21514d8981 67 void output() {
AnnaBridge 156:ff21514d8981 68 core_util_critical_section_enter();
AnnaBridge 156:ff21514d8981 69 port_dir(&_port, PIN_OUTPUT);
AnnaBridge 156:ff21514d8981 70 core_util_critical_section_exit();
AnnaBridge 156:ff21514d8981 71 }
AnnaBridge 156:ff21514d8981 72
AnnaBridge 156:ff21514d8981 73 /** Set as an input
AnnaBridge 156:ff21514d8981 74 */
AnnaBridge 156:ff21514d8981 75 void input() {
AnnaBridge 156:ff21514d8981 76 core_util_critical_section_enter();
AnnaBridge 156:ff21514d8981 77 port_dir(&_port, PIN_INPUT);
AnnaBridge 156:ff21514d8981 78 core_util_critical_section_exit();
AnnaBridge 156:ff21514d8981 79 }
AnnaBridge 156:ff21514d8981 80
AnnaBridge 156:ff21514d8981 81 /** Set the input pin mode
AnnaBridge 156:ff21514d8981 82 *
AnnaBridge 156:ff21514d8981 83 * @param mode PullUp, PullDown, PullNone, OpenDrain
AnnaBridge 156:ff21514d8981 84 */
AnnaBridge 156:ff21514d8981 85 void mode(PinMode mode) {
AnnaBridge 156:ff21514d8981 86 core_util_critical_section_enter();
AnnaBridge 156:ff21514d8981 87 port_mode(&_port, mode);
AnnaBridge 156:ff21514d8981 88 core_util_critical_section_exit();
AnnaBridge 156:ff21514d8981 89 }
AnnaBridge 156:ff21514d8981 90
AnnaBridge 156:ff21514d8981 91 /** A shorthand for write()
AnnaBridge 156:ff21514d8981 92 * \sa PortInOut::write()
AnnaBridge 156:ff21514d8981 93 */
AnnaBridge 156:ff21514d8981 94 PortInOut& operator= (int value) {
AnnaBridge 156:ff21514d8981 95 write(value);
AnnaBridge 156:ff21514d8981 96 return *this;
AnnaBridge 156:ff21514d8981 97 }
AnnaBridge 156:ff21514d8981 98
AnnaBridge 156:ff21514d8981 99 /** A shorthand for write()
AnnaBridge 156:ff21514d8981 100 * \sa PortInOut::write()
AnnaBridge 156:ff21514d8981 101 */
AnnaBridge 156:ff21514d8981 102 PortInOut& operator= (PortInOut& rhs) {
AnnaBridge 156:ff21514d8981 103 write(rhs.read());
AnnaBridge 156:ff21514d8981 104 return *this;
AnnaBridge 156:ff21514d8981 105 }
AnnaBridge 156:ff21514d8981 106
AnnaBridge 156:ff21514d8981 107 /** A shorthand for read()
AnnaBridge 156:ff21514d8981 108 * \sa PortInOut::read()
AnnaBridge 156:ff21514d8981 109 */
AnnaBridge 156:ff21514d8981 110 operator int() {
AnnaBridge 156:ff21514d8981 111 return read();
AnnaBridge 156:ff21514d8981 112 }
AnnaBridge 156:ff21514d8981 113
AnnaBridge 156:ff21514d8981 114 private:
AnnaBridge 156:ff21514d8981 115 port_t _port;
AnnaBridge 156:ff21514d8981 116 };
AnnaBridge 156:ff21514d8981 117
AnnaBridge 156:ff21514d8981 118 } // namespace mbed
AnnaBridge 156:ff21514d8981 119
AnnaBridge 156:ff21514d8981 120 #endif
AnnaBridge 156:ff21514d8981 121
AnnaBridge 156:ff21514d8981 122 #endif