RTC auf true
platform/mbed_poll.h@0:38ceb79fef03, 2018-11-28 (annotated)
- Committer:
- kevman
- Date:
- Wed Nov 28 15:10:15 2018 +0000
- Revision:
- 0:38ceb79fef03
RTC modified
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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kevman | 0:38ceb79fef03 | 1 | /* mbed Microcontroller Library |
kevman | 0:38ceb79fef03 | 2 | * Copyright (c) 2017 ARM Limited |
kevman | 0:38ceb79fef03 | 3 | * |
kevman | 0:38ceb79fef03 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
kevman | 0:38ceb79fef03 | 5 | * you may not use this file except in compliance with the License. |
kevman | 0:38ceb79fef03 | 6 | * You may obtain a copy of the License at |
kevman | 0:38ceb79fef03 | 7 | * |
kevman | 0:38ceb79fef03 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
kevman | 0:38ceb79fef03 | 9 | * |
kevman | 0:38ceb79fef03 | 10 | * Unless required by applicable law or agreed to in writing, software |
kevman | 0:38ceb79fef03 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
kevman | 0:38ceb79fef03 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
kevman | 0:38ceb79fef03 | 13 | * See the License for the specific language governing permissions and |
kevman | 0:38ceb79fef03 | 14 | * limitations under the License. |
kevman | 0:38ceb79fef03 | 15 | */ |
kevman | 0:38ceb79fef03 | 16 | #ifndef MBED_POLL_H |
kevman | 0:38ceb79fef03 | 17 | #define MBED_POLL_H |
kevman | 0:38ceb79fef03 | 18 | |
kevman | 0:38ceb79fef03 | 19 | #define POLLIN 0x0001 ///< Data may be read without blocking |
kevman | 0:38ceb79fef03 | 20 | #define POLLOUT 0x0010 ///< Data may be written without blocking |
kevman | 0:38ceb79fef03 | 21 | #define POLLERR 0x1000 ///< An error has occurred on the device or stream |
kevman | 0:38ceb79fef03 | 22 | #define POLLHUP 0x2000 ///< The device has been disconnected |
kevman | 0:38ceb79fef03 | 23 | #define POLLNVAL 0x4000 ///< The specified file handle value is invalid |
kevman | 0:38ceb79fef03 | 24 | |
kevman | 0:38ceb79fef03 | 25 | namespace mbed { |
kevman | 0:38ceb79fef03 | 26 | |
kevman | 0:38ceb79fef03 | 27 | class FileHandle; |
kevman | 0:38ceb79fef03 | 28 | |
kevman | 0:38ceb79fef03 | 29 | /** \addtogroup platform */ |
kevman | 0:38ceb79fef03 | 30 | /** @{*/ |
kevman | 0:38ceb79fef03 | 31 | /** |
kevman | 0:38ceb79fef03 | 32 | * \defgroup platform_poll poll functions |
kevman | 0:38ceb79fef03 | 33 | * @{ |
kevman | 0:38ceb79fef03 | 34 | */ |
kevman | 0:38ceb79fef03 | 35 | |
kevman | 0:38ceb79fef03 | 36 | struct pollfh { |
kevman | 0:38ceb79fef03 | 37 | FileHandle *fh; |
kevman | 0:38ceb79fef03 | 38 | short events; |
kevman | 0:38ceb79fef03 | 39 | short revents; |
kevman | 0:38ceb79fef03 | 40 | }; |
kevman | 0:38ceb79fef03 | 41 | |
kevman | 0:38ceb79fef03 | 42 | /** A mechanism to multiplex input/output over a set of file handles(file descriptors). |
kevman | 0:38ceb79fef03 | 43 | * For every file handle provided, poll() examines it for any events registered for that particular |
kevman | 0:38ceb79fef03 | 44 | * file handle. |
kevman | 0:38ceb79fef03 | 45 | * |
kevman | 0:38ceb79fef03 | 46 | * @param fhs an array of PollFh struct carrying a FileHandle and bitmasks of events |
kevman | 0:38ceb79fef03 | 47 | * @param nfhs number of file handles |
kevman | 0:38ceb79fef03 | 48 | * @param timeout timer value to timeout or -1 for loop forever |
kevman | 0:38ceb79fef03 | 49 | * |
kevman | 0:38ceb79fef03 | 50 | * @return number of file handles selected (for which revents is non-zero). 0 if timed out with nothing selected. -1 for error. |
kevman | 0:38ceb79fef03 | 51 | */ |
kevman | 0:38ceb79fef03 | 52 | int poll(pollfh fhs[], unsigned nfhs, int timeout); |
kevman | 0:38ceb79fef03 | 53 | |
kevman | 0:38ceb79fef03 | 54 | /**@}*/ |
kevman | 0:38ceb79fef03 | 55 | |
kevman | 0:38ceb79fef03 | 56 | /**@}*/ |
kevman | 0:38ceb79fef03 | 57 | |
kevman | 0:38ceb79fef03 | 58 | } // namespace mbed |
kevman | 0:38ceb79fef03 | 59 | |
kevman | 0:38ceb79fef03 | 60 | #endif //MBED_POLL_H |