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Einfaches mbed RPC Beispiel
Dependencies: EthernetInterface HttpServer mbed-rtos mbed
Fork of RPCHTTPServerSimple by
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
main.cpp@7:8a319a112fba, 2015-01-18 (annotated)
- Committer:
- marcel1691
- Date:
- Sun Jan 18 14:39:15 2015 +0000
- Revision:
- 7:8a319a112fba
- Parent:
- 6:c9c7ffa0594e
- Child:
- 8:3e6bfb96a451
AnalogInput eingebaut
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yueee_yt | 0:050a5d4ffd55 | 1 | //#define DNS_SERVER_ADDRESS(ipaddr) (ip4_addr_set_u32(ipaddr, ipaddr_addr("208.67.222.222"))) /* resolver1.opendns.com */ |
marcel1691 | 6:c9c7ffa0594e | 2 | |
yueee_yt | 0:050a5d4ffd55 | 3 | #include "mbed.h" |
yueee_yt | 0:050a5d4ffd55 | 4 | #include "rtos.h" |
yueee_yt | 0:050a5d4ffd55 | 5 | #include "EthernetInterface.h" |
yueee_yt | 0:050a5d4ffd55 | 6 | #include "HTTPServer.h" |
yueee_yt | 3:5758cfefe980 | 7 | #include "mbed_rpc.h" |
marcel1691 | 6:c9c7ffa0594e | 8 | #include "SDFileSystem.h" |
yueee_yt | 5:bfa9878aa274 | 9 | |
yueee_yt | 0:050a5d4ffd55 | 10 | EthernetInterface eth; |
yueee_yt | 3:5758cfefe980 | 11 | |
yueee_yt | 3:5758cfefe980 | 12 | DigitalOut led4(LED4); |
yueee_yt | 5:bfa9878aa274 | 13 | |
marcel1691 | 6:c9c7ffa0594e | 14 | //LocalFileSystem local("local"); |
marcel1691 | 6:c9c7ffa0594e | 15 | SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "local"); |
yueee_yt | 0:050a5d4ffd55 | 16 | |
marcel1691 | 7:8a319a112fba | 17 | static float value = 20; |
marcel1691 | 7:8a319a112fba | 18 | |
marcel1691 | 7:8a319a112fba | 19 | class AnalogInHandler : public SimpleHandler |
marcel1691 | 7:8a319a112fba | 20 | { |
marcel1691 | 7:8a319a112fba | 21 | public: |
marcel1691 | 7:8a319a112fba | 22 | AnalogInHandler(const char* rootPath, const char* path, TCPSocketConnection* pTCPSocketConnection) : SimpleHandler(rootPath, path, pTCPSocketConnection) { } |
marcel1691 | 7:8a319a112fba | 23 | virtual ~AnalogInHandler() {} |
marcel1691 | 7:8a319a112fba | 24 | |
marcel1691 | 7:8a319a112fba | 25 | //protected: |
marcel1691 | 7:8a319a112fba | 26 | static inline HTTPRequestHandler* inst(const char* rootPath, const char* path, TCPSocketConnection* pTCPSocketConnection) { return new AnalogInHandler(rootPath, path, pTCPSocketConnection); } //if we ever could do static virtual functions, this would be one |
marcel1691 | 7:8a319a112fba | 27 | |
marcel1691 | 7:8a319a112fba | 28 | virtual void doGet() |
marcel1691 | 7:8a319a112fba | 29 | { |
marcel1691 | 7:8a319a112fba | 30 | char buf[20]; |
marcel1691 | 7:8a319a112fba | 31 | sprintf( buf, "%f", value ); |
marcel1691 | 7:8a319a112fba | 32 | value += 0.01; |
marcel1691 | 7:8a319a112fba | 33 | setContentLen( strlen(buf) ); |
marcel1691 | 7:8a319a112fba | 34 | respHeaders()["Connection"] = "close"; |
marcel1691 | 7:8a319a112fba | 35 | writeData(buf, strlen(buf)); |
marcel1691 | 7:8a319a112fba | 36 | } |
marcel1691 | 7:8a319a112fba | 37 | |
marcel1691 | 7:8a319a112fba | 38 | }; |
marcel1691 | 7:8a319a112fba | 39 | |
yueee_yt | 5:bfa9878aa274 | 40 | void aliveState(void const *args) |
yueee_yt | 5:bfa9878aa274 | 41 | { |
marcel1691 | 6:c9c7ffa0594e | 42 | while (true) |
marcel1691 | 6:c9c7ffa0594e | 43 | { |
yueee_yt | 3:5758cfefe980 | 44 | led4 = !led4; |
marcel1691 | 6:c9c7ffa0594e | 45 | Thread::wait(2000); |
yueee_yt | 0:050a5d4ffd55 | 46 | } |
yueee_yt | 0:050a5d4ffd55 | 47 | } |
yueee_yt | 0:050a5d4ffd55 | 48 | |
marcel1691 | 6:c9c7ffa0594e | 49 | uint32_t do_list(const char *fsrc) |
marcel1691 | 6:c9c7ffa0594e | 50 | { |
marcel1691 | 6:c9c7ffa0594e | 51 | DIR *d = opendir(fsrc); |
marcel1691 | 6:c9c7ffa0594e | 52 | struct dirent *p; |
marcel1691 | 6:c9c7ffa0594e | 53 | uint32_t counter = 0; |
marcel1691 | 6:c9c7ffa0594e | 54 | |
marcel1691 | 6:c9c7ffa0594e | 55 | while ((p = readdir(d)) != NULL) { |
marcel1691 | 6:c9c7ffa0594e | 56 | counter++; |
marcel1691 | 6:c9c7ffa0594e | 57 | printf("%s\n", p->d_name); |
marcel1691 | 6:c9c7ffa0594e | 58 | } |
marcel1691 | 6:c9c7ffa0594e | 59 | closedir(d); |
marcel1691 | 6:c9c7ffa0594e | 60 | return counter; |
marcel1691 | 6:c9c7ffa0594e | 61 | } |
marcel1691 | 6:c9c7ffa0594e | 62 | |
yueee_yt | 0:050a5d4ffd55 | 63 | int main() |
yueee_yt | 0:050a5d4ffd55 | 64 | { |
yueee_yt | 0:050a5d4ffd55 | 65 | printf("********* PROGRAM START ***********\r\n"); |
yueee_yt | 0:050a5d4ffd55 | 66 | Thread thread(aliveState); |
marcel1691 | 7:8a319a112fba | 67 | |
marcel1691 | 7:8a319a112fba | 68 | // LED's |
yueee_yt | 3:5758cfefe980 | 69 | RPC::add_rpc_class<RpcDigitalOut>(); |
marcel1691 | 6:c9c7ffa0594e | 70 | RPC::construct<RpcDigitalOut, PinName, const char*>(PTC3, "led1"); |
marcel1691 | 6:c9c7ffa0594e | 71 | RPC::construct<RpcDigitalOut, PinName, const char*>(PTC2, "led2"); |
marcel1691 | 6:c9c7ffa0594e | 72 | RPC::construct<RpcDigitalOut, PinName, const char*>(PTA2, "led3"); |
marcel1691 | 7:8a319a112fba | 73 | |
marcel1691 | 7:8a319a112fba | 74 | // Sensoren bringt Linkfehler |
marcel1691 | 7:8a319a112fba | 75 | //RPC::add_rpc_class<RpcAnalogIn>(); |
marcel1691 | 7:8a319a112fba | 76 | //RPC::construct<RpcAnalogIn, PinName, const char*>(PTB3, "s1"); |
marcel1691 | 6:c9c7ffa0594e | 77 | //RPCFunction rpcFunc(LcdWrite, "LcdWrite"); //ADD Here!! |
marcel1691 | 7:8a319a112fba | 78 | |
yueee_yt | 3:5758cfefe980 | 79 | |
yueee_yt | 0:050a5d4ffd55 | 80 | printf("EthernetInterface Setting up...\r\n"); |
marcel1691 | 6:c9c7ffa0594e | 81 | if(eth.init()!=0) |
marcel1691 | 6:c9c7ffa0594e | 82 | { //for DHCP Server |
yueee_yt | 5:bfa9878aa274 | 83 | //if(eth.init(IPAddress,NetMasks,Gateway)!=0) { //for Static IP Address |
yueee_yt | 0:050a5d4ffd55 | 84 | printf("EthernetInterface Initialize Error \r\n"); |
yueee_yt | 0:050a5d4ffd55 | 85 | return -1; |
yueee_yt | 0:050a5d4ffd55 | 86 | } |
marcel1691 | 6:c9c7ffa0594e | 87 | if(eth.connect()!=0) |
marcel1691 | 6:c9c7ffa0594e | 88 | { |
yueee_yt | 0:050a5d4ffd55 | 89 | printf("EthernetInterface Connect Error \r\n"); |
yueee_yt | 0:050a5d4ffd55 | 90 | return -1; |
yueee_yt | 0:050a5d4ffd55 | 91 | } |
yueee_yt | 0:050a5d4ffd55 | 92 | printf("IP Address is %s\r\n", eth.getIPAddress()); |
yueee_yt | 0:050a5d4ffd55 | 93 | printf("NetMask is %s\r\n", eth.getNetworkMask()); |
yueee_yt | 0:050a5d4ffd55 | 94 | printf("Gateway Address is %s\r\n", eth.getGateway()); |
yueee_yt | 0:050a5d4ffd55 | 95 | printf("Ethernet Setup OK\r\n"); |
yueee_yt | 0:050a5d4ffd55 | 96 | |
marcel1691 | 6:c9c7ffa0594e | 97 | printf("\nList all directories/files /local.\n"); |
marcel1691 | 6:c9c7ffa0594e | 98 | do_list("/local"); |
marcel1691 | 6:c9c7ffa0594e | 99 | |
marcel1691 | 7:8a319a112fba | 100 | //HTTPServerAddHandler<SimpleHandler>("/hello"); //Default handler |
marcel1691 | 7:8a319a112fba | 101 | HTTPServerAddHandler<AnalogInHandler>("/analogIn"); //Default handler |
marcel1691 | 7:8a319a112fba | 102 | //FSHandler::mount("/local", "/"); |
marcel1691 | 7:8a319a112fba | 103 | //HTTPServerAddHandler<FSHandler>("/"); |
yueee_yt | 3:5758cfefe980 | 104 | HTTPServerAddHandler<RPCHandler>("/rpc"); |
yueee_yt | 0:050a5d4ffd55 | 105 | HTTPServerStart(80); |
yueee_yt | 0:050a5d4ffd55 | 106 | } |
yueee_yt | 0:050a5d4ffd55 | 107 | |
yueee_yt | 4:155c6ff99458 | 108 | void LcdWrite(Arguments* arg, Reply* r) //ADD Here!! |
yueee_yt | 4:155c6ff99458 | 109 | { |
marcel1691 | 6:c9c7ffa0594e | 110 | printf("%s",arg->argv[0]); |
yueee_yt | 4:155c6ff99458 | 111 | } |