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This programme Sets a web server using light weigh ip (using Donatien Garnier's server code) which reads a voltage and saves it value in an htm file to be displayed on local page. Server 2 2nd edition Two issues here 1 ) the compiler throws a warning about assignment in RPCHandler.cpp and 2) the local .htm file created on the mbed flash memory is always date stamped with the default date 01/01/2008 11:00
Dependencies: EthernetNetIf NTPClient_NetServices mbed
Diff: pmr_svr3.cpp
- Revision:
- 0:03e1db2fe866
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/pmr_svr3.cpp Sun Aug 08 22:00:39 2010 +0000 @@ -0,0 +1,101 @@ +#include "mbed.h" +#include "EthernetNetIf.h" +#include "HTTPServer.h" +#include "NTPClient.h" + +DigitalOut led1(LED1, "led1"); +DigitalOut led2(LED2, "led2"); +DigitalOut led3(LED3, "led3"); +DigitalOut led4(LED4, "led4"); + +AnalogIn Voltmeter (p20); + +LocalFileSystem fs("webfs"); // this could be any name + +EthernetNetIf eth; +HTTPServer svr; +NTPClient ntp; + +int updateVolts(time_t ctTime) + { + + FILE *fp = fopen("/webfs/volts.htm", "w"); // Open local filename + // it ignores path and date defaults 1/1/2008 becausse RTC not set + // if I call ithe localfilesystem www rather than 'local' it writes and is seen when drive is refreshed + fprintf(fp, "<title> Volt meter test page </title>\n"); + fprintf(fp,"<h1>Volts of the day from port 1</h1>"); + fprintf(fp, "volts %f V at %s \r\n",Voltmeter.read(), ctime(&ctTime)); + fclose(fp); + return(0); + } + + long int loadTime(void) + { + time_t ctTime; + ctTime = time(NULL); + char locTime[32]; +// printf("Current time is (UTC): %s\n\r", ctime(&ctTime)); + + Host server(IpAddr(), 123, "0.uk.pool.ntp.org"); + ntp.setTime(server); + + ctTime = time(NULL); + set_time (ctTime); // sets local rtc + time_t seconds = time(NULL); + strftime(locTime,32, "%I:%M %p\r\n",localtime(&seconds)); + printf("RTC Time is now (UTC): %s\n\r",locTime ); + return (ctTime); + } + + +int main() { + + time_t systemTime; + Base::add_rpc_class<DigitalOut>(); + + printf("Setting up...\n"); + EthernetErr ethErr = eth.setup(); + if(ethErr) + { + printf("Error %d in setup.\n", ethErr); + return -1; + } + printf("Setup OK\n"); + +// FSHandler::mount("/webfs", "/files"); //Mount /wwww path on /files web path - this has no meaning + FSHandler::mount("/webfs", "/"); //Mount /wwww path on web root path + + +// svr.addHandler<SimpleHandler>("/"); hard code for Hello world + + + systemTime=loadTime(); + + printf("System is now (UTC): %s\n\r", ctime(&systemTime)); + Timer tm; + tm.start(); + + + svr.addHandler<RPCHandler>("/rpc"); // sets up the remote procedure call handler + svr.addHandler<FSHandler>("/files");// this does not see the subdirectory + svr.addHandler<FSHandler>("/"); //Default handler + svr.bind(80); + updateVolts(systemTime); + printf("Listening...\n\r"); + //Listen indefinitely + while(true) + { + Net::poll(); + if(tm.read()>0.5) + { + led1=!led1; //Show that we are alive + // writing to this file continually updates the drive as attached as a usb drive to the host and generates errors so not good + // and even at 2 second interval the auto play continually brings up windows + // updateVolts(); + tm.start(); + } + } + + return 0; + +} \ No newline at end of file