Diff: fetch.cpp

Revision:

1:0014879fa94f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fetch.cpp	Wed Mar 06 00:36:15 2013 +0000
@@ -0,0 +1,117 @@
+#include "mbed.h"
+#include "VS1002.h"
+#include "TextLCD.h"
+#include "RPG.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+#include "SDFileSystem.h"
+
+#include <string>
+#include <iostream>
+
+TextLCD lcd2(p10, p18, p24, p23, p22, p21, TextLCD::LCD16x2 ); // rs, e, d0-d3
+
+HTTPClient http;
+HTTPResult result;
+bool completed = false;
+
+void request_callback(HTTPResult r)
+{
+    result = r;
+    completed = true;
+}
+
+
+
+void  fetch ()
+{
+    string voiceurl;
+    string httpurl = "http://translate.google.com/translate_tts?ie=UTF-8&tl=en&q=";
+    Serial pc(USBTX, USBRX);
+    pc.baud(9600);
+    char* title[10];
+    int counter=0;
+    char *ct[10]= {"/sd/0.txt","/sd/1.txt","/sd/2.txt","/sd/3.txt","/sd/4.txt","/sd/5.txt","/sd/6.txt","/sd/7.txt","/sd/8.txt","/sd/9.txt"};
+    char *tstartXML = "<title>"; //RSS XML start title
+    char *tendXML ="</title>"; //RSS XML end title
+    char *tsptr;
+    char *teptr;
+    int i=0,j=0;
+    // the eth and HTTP code has be taken directly from the HTTPStream documentation page
+    // see http://mbed.org/cookbook/HTTP-Client-Data-Containers
+   
+    HTTPStream stream;
+    char BigBuf[1024 + 1] = {0};
+    stream.readNext((byte*)BigBuf, 1024); //Point to buffer for the first read
+    //CNN Tech News RSS Feed - get web page with XML
+    HTTPResult r = http.get("HTTP://rss.cnn.com/rss/cnn_tech.rss", &stream, request_callback);
+//fetch new and print
+    while (!completed) {
+        Net::poll(); // Polls the Networking stack
+        if (stream.readable()) { // check for end of file
+            BigBuf[stream.readLen()] = 0; // Transform this buffer in a zero-terminated char* string
+            tsptr = BigBuf;
+            // displays titles on LCD  from XML "<title>....title text...</title>"
+            do {
+                tsptr = strstr(tsptr,tstartXML); // find <title> in string - NULL if not
+                teptr = strstr(tsptr,tendXML); // find <\title> in string - NULL if not
+
+                if (tsptr!=NULL) {
+                    tsptr = tsptr + strlen(tstartXML);// move to char after "<title>"
+
+                    voiceurl.erase();
+                    voiceurl=tsptr;
+                    voiceurl.erase(voiceurl.begin()+(strlen(tsptr)-strlen(teptr)),voiceurl.end());
+
+                    printf("title: _____ %s\n",voiceurl);
+                }
+                if ((tsptr!=NULL)&&(teptr!=NULL)) {
+
+                    voiceurl=httpurl+voiceurl;
+                    for(i=0; (i<voiceurl.length()); i++) {
+                        if(voiceurl[i]==' '||voiceurl[i]=='\'') {
+                            voiceurl[i]='+';
+                        }
+                    }
+                    voiceurl=voiceurl+"!!";
+                    printf("%s\n",voiceurl.c_str());
+                    if(counter==10) {
+                        counter=0;
+                    }
+                    voiceurl=voiceurl.c_str();
+                    char temp[voiceurl.length()];
+
+                    for(i=0; (i<=voiceurl.length()); i++) {
+ 
+                        temp[i]=voiceurl[i];
+
+                    }
+
+
+                    FILE *fp = fopen(ct[counter], "w");
+                    if(fp == NULL) {
+                        error("Could not open file for write\n");
+                    }
+                    fprintf(fp, temp);
+                    fclose(fp);
+                    printf("stored: _____ %s\n\n",temp);
+                    printf("Goodbye World!\n");
+                    counter++;
+
+                    wait(.2);
+                }
+            } while (tsptr!=NULL); // No more "<title>"s in BigBuf to display
+            stream.readNext((byte*)BigBuf, 1024); //Buffer has been read, now we can put more data in it
+        }
+    }
+    lcd2.cls();
+    if (result == HTTP_OK) {
+        lcd2.cls();
+        lcd2.printf(" Read complete\n\r");
+    } else {
+        lcd2. printf(" Error %d\n", result);
+
+    }
+
+free (BigBuf);
+}