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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

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

Last commit 20 Feb 2019 by mbed official

api/BusOut.h@635:a11c0372f0ba, 2015-09-30 (annotated)

Committer:
mbed_official
Date:
Wed Sep 30 17:00:09 2015 +0100
Revision:
635:a11c0372f0ba
Parent:
455:8bc3a354916d 
Synchronized with git revision d29c98dae61be0946ddf3a3c641c7726056f9452



Full URL: https://github.com/mbedmicro/mbed/commit/d29c98dae61be0946ddf3a3c641c7726056f9452/



Added support for SAMW25

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_BUSOUT_H
bogdanm 13:0645d8841f51 17 #define MBED_BUSOUT_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "DigitalOut.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 namespace mbed {
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 /** A digital output bus, used for setting the state of a collection of pins
bogdanm 13:0645d8841f51 24 */
bogdanm 13:0645d8841f51 25 class BusOut {
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 public:
bogdanm 13:0645d8841f51 28
bogdanm 13:0645d8841f51 29 /** Create an BusOut, connected to the specified pins
bogdanm 13:0645d8841f51 30 *
bogdanm 13:0645d8841f51 31 * @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
bogdanm 13:0645d8841f51 32 *
bogdanm 13:0645d8841f51 33 * @note
bogdanm 13:0645d8841f51 34 * It is only required to specify as many pin variables as is required
bogdanm 13:0645d8841f51 35 * for the bus; the rest will default to NC (not connected)
bogdanm 13:0645d8841f51 36 */
bogdanm 13:0645d8841f51 37 BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
bogdanm 13:0645d8841f51 38 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
bogdanm 13:0645d8841f51 39 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
bogdanm 13:0645d8841f51 40 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
bogdanm 13:0645d8841f51 41
bogdanm 13:0645d8841f51 42 BusOut(PinName pins[16]);
bogdanm 13:0645d8841f51 43
bogdanm 13:0645d8841f51 44 virtual ~BusOut();
bogdanm 13:0645d8841f51 45
bogdanm 13:0645d8841f51 46 /** Write the value to the output bus
bogdanm 13:0645d8841f51 47 *
bogdanm 13:0645d8841f51 48 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
bogdanm 13:0645d8841f51 49 */
bogdanm 13:0645d8841f51 50 void write(int value);
bogdanm 13:0645d8841f51 51
bogdanm 13:0645d8841f51 52 /** Read the value currently output on the bus
bogdanm 13:0645d8841f51 53 *
bogdanm 13:0645d8841f51 54 * @returns
bogdanm 13:0645d8841f51 55 * An integer with each bit corresponding to associated DigitalOut pin setting
bogdanm 13:0645d8841f51 56 */
bogdanm 13:0645d8841f51 57 int read();
bogdanm 13:0645d8841f51 58
mbed_official 455:8bc3a354916d 59 /** Binary mask of bus pins connected to actual pins (not NC pins)
mbed_official 455:8bc3a354916d 60 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
mbed_official 455:8bc3a354916d 61 *
mbed_official 455:8bc3a354916d 62 * @returns
mbed_official 455:8bc3a354916d 63 * Binary mask of connected pins
mbed_official 455:8bc3a354916d 64 */
mbed_official 455:8bc3a354916d 65 int mask() {
mbed_official 455:8bc3a354916d 66 return _nc_mask;
mbed_official 455:8bc3a354916d 67 }
mbed_official 455:8bc3a354916d 68
bogdanm 13:0645d8841f51 69 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 70 /** A shorthand for write()
bogdanm 13:0645d8841f51 71 */
bogdanm 13:0645d8841f51 72 BusOut& operator= (int v);
bogdanm 13:0645d8841f51 73 BusOut& operator= (BusOut& rhs);
bogdanm 13:0645d8841f51 74
mbed_official 455:8bc3a354916d 75 /** Access to particular bit in random-iterator fashion
mbed_official 455:8bc3a354916d 76 */
mbed_official 455:8bc3a354916d 77 DigitalOut& operator[] (int index);
mbed_official 455:8bc3a354916d 78
bogdanm 13:0645d8841f51 79 /** A shorthand for read()
bogdanm 13:0645d8841f51 80 */
bogdanm 13:0645d8841f51 81 operator int();
bogdanm 13:0645d8841f51 82 #endif
bogdanm 13:0645d8841f51 83
bogdanm 13:0645d8841f51 84 protected:
bogdanm 13:0645d8841f51 85 DigitalOut* _pin[16];
mbed_official 212:34d62c0b2af6 86
mbed_official 455:8bc3a354916d 87 /** Mask of bus's NC pins
mbed_official 455:8bc3a354916d 88 * If bit[n] is set to 1 - pin is connected
mbed_official 455:8bc3a354916d 89 * if bit[n] is cleared - pin is not connected (NC)
mbed_official 455:8bc3a354916d 90 */
mbed_official 455:8bc3a354916d 91 int _nc_mask;
mbed_official 455:8bc3a354916d 92
mbed_official 212:34d62c0b2af6 93 /* disallow copy constructor and assignment operators */
mbed_official 212:34d62c0b2af6 94 private:
mbed_official 212:34d62c0b2af6 95 BusOut(const BusOut&);
mbed_official 212:34d62c0b2af6 96 BusOut & operator = (const BusOut&);
bogdanm 13:0645d8841f51 97 };
bogdanm 13:0645d8841f51 98
bogdanm 13:0645d8841f51 99 } // namespace mbed
bogdanm 13:0645d8841f51 100
bogdanm 13:0645d8841f51 101 #endif