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Einfaches mbed RPC Beispiel
Dependencies: EthernetInterface HttpServer mbed-rtos mbed
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Remote Procedure Call (RPC - „Aufruf einer fernen Prozedur“) ist eine Technik zur Realisierung von Interprozesskommunikation. Sie ermöglicht den Aufruf von Funktionen in anderen Adressräumen. Im Normalfall werden die aufgerufenen Funktionen auf einem anderen Computer als das aufrufende Programm ausgeführt. Es existieren viele Implementierungen dieser Technik, in der Regel sind sie untereinander nicht kompatibel
Die mbed Plattform beinhaltet eine RPC Library, welche ausgesuchte mbed Objekte (DigitalPin, DigitalOut etc.) mittels Serieller Schnittstelle oder via HTTP Aufrufen, zur Verfügung stellt.
Die mbed RCP Klassen verwenden C++ Templates, siehe Zeilen mit <Argument> und den Namespace RPC, siehe Zeilen mit RPC::.
Client
- Werte setzen: http://<IP-Adresse mbed>/rpc/led2/write+1
- Werte lesen : http://<IP-Adresse mbed>/rpc/poti/read
mbed-rpc/Arguments.h@13:b7380bc60ad2, 2015-05-27 (annotated)
- Committer:
- stefan1691
- Date:
- Wed May 27 12:08:18 2015 +0000
- Revision:
- 13:b7380bc60ad2
- Parent:
- 11:43e28c85fd75
Web-APP ergaenzt
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| stefan1691 | 11:43e28c85fd75 | 1 | /* mbed Microcontroller Library |
| stefan1691 | 11:43e28c85fd75 | 2 | * Copyright (c) 2006-2013 ARM Limited |
| stefan1691 | 11:43e28c85fd75 | 3 | * |
| stefan1691 | 11:43e28c85fd75 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| stefan1691 | 11:43e28c85fd75 | 5 | * you may not use this file except in compliance with the License. |
| stefan1691 | 11:43e28c85fd75 | 6 | * You may obtain a copy of the License at |
| stefan1691 | 11:43e28c85fd75 | 7 | * |
| stefan1691 | 11:43e28c85fd75 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| stefan1691 | 11:43e28c85fd75 | 9 | * |
| stefan1691 | 11:43e28c85fd75 | 10 | * Unless required by applicable law or agreed to in writing, software |
| stefan1691 | 11:43e28c85fd75 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| stefan1691 | 11:43e28c85fd75 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| stefan1691 | 11:43e28c85fd75 | 13 | * See the License for the specific language governing permissions and |
| stefan1691 | 11:43e28c85fd75 | 14 | * limitations under the License. |
| stefan1691 | 11:43e28c85fd75 | 15 | */ |
| stefan1691 | 11:43e28c85fd75 | 16 | #ifndef ARGUMENTS_H |
| stefan1691 | 11:43e28c85fd75 | 17 | #define ARGUMENTS_H |
| stefan1691 | 11:43e28c85fd75 | 18 | |
| stefan1691 | 11:43e28c85fd75 | 19 | #include "platform.h" |
| stefan1691 | 11:43e28c85fd75 | 20 | #include "parse_pins.h" |
| stefan1691 | 11:43e28c85fd75 | 21 | |
| stefan1691 | 11:43e28c85fd75 | 22 | namespace mbed { |
| stefan1691 | 11:43e28c85fd75 | 23 | |
| stefan1691 | 11:43e28c85fd75 | 24 | #define RPC_MAX_STRING 128 |
| stefan1691 | 11:43e28c85fd75 | 25 | #define RPC_MAX_ARGS 16 |
| stefan1691 | 11:43e28c85fd75 | 26 | |
| stefan1691 | 11:43e28c85fd75 | 27 | class Arguments { |
| stefan1691 | 11:43e28c85fd75 | 28 | public: |
| stefan1691 | 11:43e28c85fd75 | 29 | Arguments(const char* rqs); |
| stefan1691 | 11:43e28c85fd75 | 30 | |
| stefan1691 | 11:43e28c85fd75 | 31 | template<typename Arg> |
| stefan1691 | 11:43e28c85fd75 | 32 | Arg getArg(void); |
| stefan1691 | 11:43e28c85fd75 | 33 | |
| stefan1691 | 11:43e28c85fd75 | 34 | char *obj_name; |
| stefan1691 | 11:43e28c85fd75 | 35 | char *method_name; |
| stefan1691 | 11:43e28c85fd75 | 36 | |
| stefan1691 | 11:43e28c85fd75 | 37 | int argc; |
| stefan1691 | 11:43e28c85fd75 | 38 | char* argv[RPC_MAX_ARGS]; |
| stefan1691 | 11:43e28c85fd75 | 39 | |
| stefan1691 | 11:43e28c85fd75 | 40 | private: |
| stefan1691 | 11:43e28c85fd75 | 41 | // This copy can be removed if we can assume the request string is |
| stefan1691 | 11:43e28c85fd75 | 42 | // persistent and writable for the duration of the call |
| stefan1691 | 11:43e28c85fd75 | 43 | char request[RPC_MAX_STRING]; |
| stefan1691 | 11:43e28c85fd75 | 44 | int index; |
| stefan1691 | 11:43e28c85fd75 | 45 | char* search_arg(char **arg, char *p, char next_sep); |
| stefan1691 | 11:43e28c85fd75 | 46 | }; |
| stefan1691 | 11:43e28c85fd75 | 47 | |
| stefan1691 | 11:43e28c85fd75 | 48 | class Reply { |
| stefan1691 | 11:43e28c85fd75 | 49 | public: |
| stefan1691 | 11:43e28c85fd75 | 50 | Reply(char* r); |
| stefan1691 | 11:43e28c85fd75 | 51 | |
| stefan1691 | 11:43e28c85fd75 | 52 | template<typename Data> |
| stefan1691 | 11:43e28c85fd75 | 53 | void putData(Data d); |
| stefan1691 | 11:43e28c85fd75 | 54 | |
| stefan1691 | 11:43e28c85fd75 | 55 | private: |
| stefan1691 | 11:43e28c85fd75 | 56 | void separator(void); |
| stefan1691 | 11:43e28c85fd75 | 57 | bool first; |
| stefan1691 | 11:43e28c85fd75 | 58 | char* reply; |
| stefan1691 | 11:43e28c85fd75 | 59 | }; |
| stefan1691 | 11:43e28c85fd75 | 60 | |
| stefan1691 | 11:43e28c85fd75 | 61 | |
| stefan1691 | 11:43e28c85fd75 | 62 | } // Namespace mbed |
| stefan1691 | 11:43e28c85fd75 | 63 | |
| stefan1691 | 11:43e28c85fd75 | 64 | #endif |