takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/platform/mbed_poll.h@0:8fdf9a60065b, 2018-10-10 (annotated)

Committer:
kadonotakashi
Date:
Wed Oct 10 00:33:53 2018 +0000
Revision:
0:8fdf9a60065b
how to make mbed librry

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2017 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16 #ifndef MBED_POLL_H
kadonotakashi 0:8fdf9a60065b 17 #define MBED_POLL_H
kadonotakashi 0:8fdf9a60065b 18
kadonotakashi 0:8fdf9a60065b 19 #define POLLIN 0x0001 ///< Data may be read without blocking
kadonotakashi 0:8fdf9a60065b 20 #define POLLOUT 0x0010 ///< Data may be written without blocking
kadonotakashi 0:8fdf9a60065b 21 #define POLLERR 0x1000 ///< An error has occurred on the device or stream
kadonotakashi 0:8fdf9a60065b 22 #define POLLHUP 0x2000 ///< The device has been disconnected
kadonotakashi 0:8fdf9a60065b 23 #define POLLNVAL 0x4000 ///< The specified file handle value is invalid
kadonotakashi 0:8fdf9a60065b 24
kadonotakashi 0:8fdf9a60065b 25 namespace mbed {
kadonotakashi 0:8fdf9a60065b 26
kadonotakashi 0:8fdf9a60065b 27 class FileHandle;
kadonotakashi 0:8fdf9a60065b 28
kadonotakashi 0:8fdf9a60065b 29 /** \addtogroup platform */
kadonotakashi 0:8fdf9a60065b 30 /** @{*/
kadonotakashi 0:8fdf9a60065b 31 /**
kadonotakashi 0:8fdf9a60065b 32 * \defgroup platform_poll poll functions
kadonotakashi 0:8fdf9a60065b 33 * @{
kadonotakashi 0:8fdf9a60065b 34 */
kadonotakashi 0:8fdf9a60065b 35
kadonotakashi 0:8fdf9a60065b 36 struct pollfh {
kadonotakashi 0:8fdf9a60065b 37 FileHandle *fh;
kadonotakashi 0:8fdf9a60065b 38 short events;
kadonotakashi 0:8fdf9a60065b 39 short revents;
kadonotakashi 0:8fdf9a60065b 40 };
kadonotakashi 0:8fdf9a60065b 41
kadonotakashi 0:8fdf9a60065b 42 /** A mechanism to multiplex input/output over a set of file handles(file descriptors).
kadonotakashi 0:8fdf9a60065b 43 * For every file handle provided, poll() examines it for any events registered for that particular
kadonotakashi 0:8fdf9a60065b 44 * file handle.
kadonotakashi 0:8fdf9a60065b 45 *
kadonotakashi 0:8fdf9a60065b 46 * @param fhs an array of PollFh struct carrying a FileHandle and bitmasks of events
kadonotakashi 0:8fdf9a60065b 47 * @param nfhs number of file handles
kadonotakashi 0:8fdf9a60065b 48 * @param timeout timer value to timeout or -1 for loop forever
kadonotakashi 0:8fdf9a60065b 49 *
kadonotakashi 0:8fdf9a60065b 50 * @return number of file handles selected (for which revents is non-zero). 0 if timed out with nothing selected. -1 for error.
kadonotakashi 0:8fdf9a60065b 51 */
kadonotakashi 0:8fdf9a60065b 52 int poll(pollfh fhs[], unsigned nfhs, int timeout);
kadonotakashi 0:8fdf9a60065b 53
kadonotakashi 0:8fdf9a60065b 54 /**@}*/
kadonotakashi 0:8fdf9a60065b 55
kadonotakashi 0:8fdf9a60065b 56 /**@}*/
kadonotakashi 0:8fdf9a60065b 57
kadonotakashi 0:8fdf9a60065b 58 } // namespace mbed
kadonotakashi 0:8fdf9a60065b 59
kadonotakashi 0:8fdf9a60065b 60 #endif //MBED_POLL_H