Daniel Worrall / Mbed 2 deprecated InternetDispBoB

Stream messages which you type into an internet app straight to the dispBoB!

Dependencies:   EthernetNetIf dispBoB mbed

InternetDispBoB.cpp@1:ec03de8ed408, 2011-07-07 (annotated)

Committer:
d_worrall
Date:
Thu Jul 07 12:16:01 2011 +0000
Revision:
1:ec03de8ed408
Child:
2:2707a70078ac
version2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
d_worrall 1:ec03de8ed408 1 #include "mbed.h"
d_worrall 1:ec03de8ed408 2 #include "EthernetNetIf.h"
d_worrall 1:ec03de8ed408 3 #include "HTTPClient.h"
d_worrall 1:ec03de8ed408 4 #include "dispBoB.h"
d_worrall 1:ec03de8ed408 5
d_worrall 1:ec03de8ed408 6 EthernetNetIf eth;
d_worrall 1:ec03de8ed408 7 HTTPClient http;
d_worrall 1:ec03de8ed408 8 Serial pc(USBTX, USBRX);
d_worrall 1:ec03de8ed408 9 dispBoB db(p28, p27, p26);
d_worrall 1:ec03de8ed408 10
d_worrall 1:ec03de8ed408 11 int main() {
d_worrall 1:ec03de8ed408 12
d_worrall 1:ec03de8ed408 13 printf("Start\n\r");
d_worrall 1:ec03de8ed408 14 printf("\r\nSetting up...\r\n");
d_worrall 1:ec03de8ed408 15
d_worrall 1:ec03de8ed408 16 EthernetErr ethErr = eth.setup(); //Setup ethernet connection
d_worrall 1:ec03de8ed408 17 if(ethErr) {
d_worrall 1:ec03de8ed408 18 printf("Error %d in setup.\n\r", ethErr);
d_worrall 1:ec03de8ed408 19 return -1;
d_worrall 1:ec03de8ed408 20 }
d_worrall 1:ec03de8ed408 21 printf("\r\nSetup OK\r\n");
d_worrall 1:ec03de8ed408 22
d_worrall 1:ec03de8ed408 23 db.init(); //initialise screen
d_worrall 1:ec03de8ed408 24 db.cls();
d_worrall 1:ec03de8ed408 25
d_worrall 1:ec03de8ed408 26 HTTPText txt; //instantiate HTTPStream object
d_worrall 1:ec03de8ed408 27 while(1){
d_worrall 1:ec03de8ed408 28 HTTPResult r = http.get("http://www.mbed.webatu.com/messageEcho.php", &txt); //load page into buffer
d_worrall 1:ec03de8ed408 29 if(r==HTTP_OK){
d_worrall 1:ec03de8ed408 30 string str = txt.gets(); //fetch string and store in str
d_worrall 1:ec03de8ed408 31
d_worrall 1:ec03de8ed408 32 size_t length; //make some variables
d_worrall 1:ec03de8ed408 33 char buffer[100];
d_worrall 1:ec03de8ed408 34
d_worrall 1:ec03de8ed408 35 size_t found=str.find("<"); //tell me where '<' first appears
d_worrall 1:ec03de8ed408 36 if(found!=string::npos){
d_worrall 1:ec03de8ed408 37 length=str.copy(buffer,int(found),0); //copy everything from start of string up until '<' character and return length
d_worrall 1:ec03de8ed408 38 buffer[length]='\0'; //null terminate my buffer
d_worrall 1:ec03de8ed408 39 string dispString = buffer; //convert buffer from type char* to string
d_worrall 1:ec03de8ed408 40 db.scroll(dispString, 0.2); //scroll "FTSE100" across the screen
d_worrall 1:ec03de8ed408 41 }
d_worrall 1:ec03de8ed408 42 } else {
d_worrall 1:ec03de8ed408 43 pc.printf("Error\n\r"); //just in case
d_worrall 1:ec03de8ed408 44 }
d_worrall 1:ec03de8ed408 45 wait(2); //wait 2 seconds before looping, so we don't pester the servers too much
d_worrall 1:ec03de8ed408 46 }
d_worrall 1:ec03de8ed408 47 }
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