A simple UDP logger that lets you send messages via UDP to a remote host. It's a cheap implementation for logging to a remove host via UDP. Note, the logger is uses UDP sockets provided by NetServices (https://mbed.org/cookbook/NetServices). After you are ready with the network setup (eth.setup()...), just call Log::init(), so the logger would create its local socket, and then you can log any text via Log::log(); Also note that the logger won't do any net polls (eth.poll()) to save computing time, so it's up to you to handle it.
Diff: UDPLogger.h
- Revision:
- 1:1130e7abfc09
diff -r 000000000000 -r 1130e7abfc09 UDPLogger.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/UDPLogger.h Tue May 29 18:12:37 2012 +0000 @@ -0,0 +1,84 @@ + +/* +Copyright (c) 2012 Mihail Stoyanov (wm [at] screamer [dot] org) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + + +#ifndef LOG_H +#define LOG_H + +#include "mbed.h" +#include "UDPSocket.h" + + +class Log { + private: + UDPSocket sock; + int lPort; + Host lHost; + Host dHost; + + bool is_init; + + public: + ///Constructor + /** + @param port : local UDP bind port even though the logger doesn't acccept messages + */ + Log (int port = 10000) { + lPort = port; + }; + + ///The actual init method, which should be called after the ethernet is initialized + /** + @param pHost : the destination UDP server - Host dHost(IpAddr(1,2,3,4), port) + + Can be called multiple times to switch destination UDP servers + */ + inline bool init(Host pHost) { + Host lHost(IpAddr(), lPort); + + UDPSocketErr udpErr = sock.bind(lHost); + if (udpErr != UDPSOCKET_OK) { + printf("error %d\n", udpErr); + return false; + }; + + dHost = pHost; + is_init = true; + + return true; + }; + + ///The logging method. + inline bool log(const char *msg) { + if (!is_init) return false; + + int sent = sock.sendto(msg, strlen(msg), &dHost); + if (sent < 0) { + printf("error %d\n", (UDPSocketErr)sent); + }; + + return true; + }; +}; + +#endif \ No newline at end of file