sai kiran / mbed-src

Watchdog Timer

Fork of mbed-src by mbed official

cpp/PortInOut.h@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #ifndef MBED_PORTINOUT_H
mbed_official 0:fd0d7bdfcdc2 23 #define MBED_PORTINOUT_H
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 #include "platform.h"
mbed_official 0:fd0d7bdfcdc2 26
mbed_official 0:fd0d7bdfcdc2 27 #if DEVICE_PORTINOUT
mbed_official 0:fd0d7bdfcdc2 28
mbed_official 0:fd0d7bdfcdc2 29 #include "port_api.h"
mbed_official 0:fd0d7bdfcdc2 30
mbed_official 0:fd0d7bdfcdc2 31 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 32
mbed_official 0:fd0d7bdfcdc2 33 /** A multiple pin digital in/out used to set/read multiple bi-directional pins
mbed_official 0:fd0d7bdfcdc2 34 */
mbed_official 0:fd0d7bdfcdc2 35 class PortInOut {
mbed_official 0:fd0d7bdfcdc2 36 public:
mbed_official 0:fd0d7bdfcdc2 37
mbed_official 0:fd0d7bdfcdc2 38 /** Create an PortInOut, connected to the specified port
mbed_official 0:fd0d7bdfcdc2 39 *
mbed_official 0:fd0d7bdfcdc2 40 * @param port Port to connect to (Port0-Port5)
mbed_official 0:fd0d7bdfcdc2 41 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
mbed_official 0:fd0d7bdfcdc2 42 */
mbed_official 0:fd0d7bdfcdc2 43 PortInOut(PortName port, int mask = 0xFFFFFFFF) {
mbed_official 0:fd0d7bdfcdc2 44 port_init(&_port, port, mask, PIN_INPUT);
mbed_official 0:fd0d7bdfcdc2 45 }
mbed_official 0:fd0d7bdfcdc2 46
mbed_official 0:fd0d7bdfcdc2 47 /** Write the value to the output port
mbed_official 0:fd0d7bdfcdc2 48 *
mbed_official 0:fd0d7bdfcdc2 49 * @param value An integer specifying a bit to write for every corresponding port pin
mbed_official 0:fd0d7bdfcdc2 50 */
mbed_official 0:fd0d7bdfcdc2 51 void write(int value) {
mbed_official 0:fd0d7bdfcdc2 52 port_write(&_port, value);
mbed_official 0:fd0d7bdfcdc2 53 }
mbed_official 0:fd0d7bdfcdc2 54
mbed_official 0:fd0d7bdfcdc2 55 /** Read the value currently output on the port
mbed_official 0:fd0d7bdfcdc2 56 *
mbed_official 0:fd0d7bdfcdc2 57 * @returns
mbed_official 0:fd0d7bdfcdc2 58 * An integer with each bit corresponding to associated port pin setting
mbed_official 0:fd0d7bdfcdc2 59 */
mbed_official 0:fd0d7bdfcdc2 60 int read() {
mbed_official 0:fd0d7bdfcdc2 61 return port_read(&_port);
mbed_official 0:fd0d7bdfcdc2 62 }
mbed_official 0:fd0d7bdfcdc2 63
mbed_official 0:fd0d7bdfcdc2 64 /** Set as an output
mbed_official 0:fd0d7bdfcdc2 65 */
mbed_official 0:fd0d7bdfcdc2 66 void output() {
mbed_official 0:fd0d7bdfcdc2 67 port_dir(&_port, PIN_OUTPUT);
mbed_official 0:fd0d7bdfcdc2 68 }
mbed_official 0:fd0d7bdfcdc2 69
mbed_official 0:fd0d7bdfcdc2 70 /** Set as an input
mbed_official 0:fd0d7bdfcdc2 71 */
mbed_official 0:fd0d7bdfcdc2 72 void input() {
mbed_official 0:fd0d7bdfcdc2 73 port_dir(&_port, PIN_INPUT);
mbed_official 0:fd0d7bdfcdc2 74 }
mbed_official 0:fd0d7bdfcdc2 75
mbed_official 0:fd0d7bdfcdc2 76 /** Set the input pin mode
mbed_official 0:fd0d7bdfcdc2 77 *
mbed_official 0:fd0d7bdfcdc2 78 * @param mode PullUp, PullDown, PullNone, OpenDrain
mbed_official 0:fd0d7bdfcdc2 79 */
mbed_official 0:fd0d7bdfcdc2 80 void mode(PinMode mode) {
mbed_official 0:fd0d7bdfcdc2 81 port_mode(&_port, mode);
mbed_official 0:fd0d7bdfcdc2 82 }
mbed_official 0:fd0d7bdfcdc2 83
mbed_official 0:fd0d7bdfcdc2 84 /** A shorthand for write()
mbed_official 0:fd0d7bdfcdc2 85 */
mbed_official 0:fd0d7bdfcdc2 86 PortInOut& operator= (int value) {
mbed_official 0:fd0d7bdfcdc2 87 write(value);
mbed_official 0:fd0d7bdfcdc2 88 return *this;
mbed_official 0:fd0d7bdfcdc2 89 }
mbed_official 0:fd0d7bdfcdc2 90
mbed_official 0:fd0d7bdfcdc2 91 PortInOut& operator= (PortInOut& rhs) {
mbed_official 0:fd0d7bdfcdc2 92 write(rhs.read());
mbed_official 0:fd0d7bdfcdc2 93 return *this;
mbed_official 0:fd0d7bdfcdc2 94 }
mbed_official 0:fd0d7bdfcdc2 95
mbed_official 0:fd0d7bdfcdc2 96 /** A shorthand for read()
mbed_official 0:fd0d7bdfcdc2 97 */
mbed_official 0:fd0d7bdfcdc2 98 operator int() {
mbed_official 0:fd0d7bdfcdc2 99 return read();
mbed_official 0:fd0d7bdfcdc2 100 }
mbed_official 0:fd0d7bdfcdc2 101
mbed_official 0:fd0d7bdfcdc2 102 private:
mbed_official 0:fd0d7bdfcdc2 103 port_t _port;
mbed_official 0:fd0d7bdfcdc2 104 };
mbed_official 0:fd0d7bdfcdc2 105
mbed_official 0:fd0d7bdfcdc2 106 } // namespace mbed
mbed_official 0:fd0d7bdfcdc2 107
mbed_official 0:fd0d7bdfcdc2 108 #endif
mbed_official 0:fd0d7bdfcdc2 109
mbed_official 0:fd0d7bdfcdc2 110 #endif