Iftikhar Aziz / mbed-dev

4545

Dependents:   LSS_Rev_1

Fork of mbed-dev by Umar Naeem

drivers/PortInOut.h@166:33361e55dd8c, 2017-08-23 (annotated)

Committer:
iftaziz
Date:
Wed Aug 23 10:32:38 2017 +0000
Revision:
166:33361e55dd8c
Parent:
160:d5399cc887bb 
r1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2013 ARM Limited
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16 #ifndef MBED_PORTINOUT_H
<> 149:156823d33999 17 #define MBED_PORTINOUT_H
<> 149:156823d33999 18
<> 149:156823d33999 19 #include "platform/platform.h"
<> 149:156823d33999 20
<> 149:156823d33999 21 #if DEVICE_PORTINOUT
<> 149:156823d33999 22
<> 149:156823d33999 23 #include "hal/port_api.h"
<> 160:d5399cc887bb 24 #include "platform/mbed_critical.h"
<> 149:156823d33999 25
<> 149:156823d33999 26 namespace mbed {
<> 149:156823d33999 27 /** \addtogroup drivers */
<> 149:156823d33999 28 /** @{*/
<> 149:156823d33999 29
<> 149:156823d33999 30 /** A multiple pin digital in/out used to set/read multiple bi-directional pins
<> 149:156823d33999 31 *
<> 149:156823d33999 32 * @Note Synchronization level: Interrupt safe
<> 149:156823d33999 33 */
<> 149:156823d33999 34 class PortInOut {
<> 149:156823d33999 35 public:
<> 149:156823d33999 36
<> 149:156823d33999 37 /** Create an PortInOut, connected to the specified port
<> 149:156823d33999 38 *
<> 149:156823d33999 39 * @param port Port to connect to (Port0-Port5)
<> 149:156823d33999 40 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
<> 149:156823d33999 41 */
<> 149:156823d33999 42 PortInOut(PortName port, int mask = 0xFFFFFFFF) {
<> 149:156823d33999 43 core_util_critical_section_enter();
<> 149:156823d33999 44 port_init(&_port, port, mask, PIN_INPUT);
<> 149:156823d33999 45 core_util_critical_section_exit();
<> 149:156823d33999 46 }
<> 149:156823d33999 47
<> 149:156823d33999 48 /** Write the value to the output port
<> 149:156823d33999 49 *
<> 149:156823d33999 50 * @param value An integer specifying a bit to write for every corresponding port pin
<> 149:156823d33999 51 */
<> 149:156823d33999 52 void write(int value) {
<> 149:156823d33999 53 port_write(&_port, value);
<> 149:156823d33999 54 }
<> 149:156823d33999 55
<> 149:156823d33999 56 /** Read the value currently output on the port
<> 149:156823d33999 57 *
<> 149:156823d33999 58 * @returns
<> 149:156823d33999 59 * An integer with each bit corresponding to associated port pin setting
<> 149:156823d33999 60 */
<> 149:156823d33999 61 int read() {
<> 149:156823d33999 62 return port_read(&_port);
<> 149:156823d33999 63 }
<> 149:156823d33999 64
<> 149:156823d33999 65 /** Set as an output
<> 149:156823d33999 66 */
<> 149:156823d33999 67 void output() {
<> 149:156823d33999 68 core_util_critical_section_enter();
<> 149:156823d33999 69 port_dir(&_port, PIN_OUTPUT);
<> 149:156823d33999 70 core_util_critical_section_exit();
<> 149:156823d33999 71 }
<> 149:156823d33999 72
<> 149:156823d33999 73 /** Set as an input
<> 149:156823d33999 74 */
<> 149:156823d33999 75 void input() {
<> 149:156823d33999 76 core_util_critical_section_enter();
<> 149:156823d33999 77 port_dir(&_port, PIN_INPUT);
<> 149:156823d33999 78 core_util_critical_section_exit();
<> 149:156823d33999 79 }
<> 149:156823d33999 80
<> 149:156823d33999 81 /** Set the input pin mode
<> 149:156823d33999 82 *
<> 149:156823d33999 83 * @param mode PullUp, PullDown, PullNone, OpenDrain
<> 149:156823d33999 84 */
<> 149:156823d33999 85 void mode(PinMode mode) {
<> 149:156823d33999 86 core_util_critical_section_enter();
<> 149:156823d33999 87 port_mode(&_port, mode);
<> 149:156823d33999 88 core_util_critical_section_exit();
<> 149:156823d33999 89 }
<> 149:156823d33999 90
<> 149:156823d33999 91 /** A shorthand for write()
<> 149:156823d33999 92 */
<> 149:156823d33999 93 PortInOut& operator= (int value) {
<> 149:156823d33999 94 write(value);
<> 149:156823d33999 95 return *this;
<> 149:156823d33999 96 }
<> 149:156823d33999 97
<> 149:156823d33999 98 PortInOut& operator= (PortInOut& rhs) {
<> 149:156823d33999 99 write(rhs.read());
<> 149:156823d33999 100 return *this;
<> 149:156823d33999 101 }
<> 149:156823d33999 102
<> 149:156823d33999 103 /** A shorthand for read()
<> 149:156823d33999 104 */
<> 149:156823d33999 105 operator int() {
<> 149:156823d33999 106 return read();
<> 149:156823d33999 107 }
<> 149:156823d33999 108
<> 149:156823d33999 109 private:
<> 149:156823d33999 110 port_t _port;
<> 149:156823d33999 111 };
<> 149:156823d33999 112
<> 149:156823d33999 113 } // namespace mbed
<> 149:156823d33999 114
<> 149:156823d33999 115 #endif
<> 149:156823d33999 116
<> 149:156823d33999 117 #endif
<> 149:156823d33999 118
<> 149:156823d33999 119 /** @}*/