Diff: main.cpp

Revision:

1:27033a7fe75c

Parent:

0:582c6436e759

Child:

2:6aaaf927e994

--- a/main.cpp	Tue Apr 24 02:27:43 2012 +0000
+++ b/main.cpp	Sat Feb 22 22:19:53 2014 +0000
@@ -4,22 +4,21 @@
 #include "TextLCD.h"
 //CNN Tech News RSS Feed - get web page with XML
 // displays titles on LCD  from XML "<title>....title text...</title>"
-TextLCD lcd(p15, p16, p17, p18, p19, p20); // rs, e, d0-d3
+TextLCD lcd(p26,p25,p24,p23,p22,p20,p19,TextLCD::LCD20x4); // rs, e, d0-d3
 EthernetNetIf eth;
 HTTPClient http;
 HTTPResult result;
 bool completed = false;
-void request_callback(HTTPResult r) {
+void loadZVVNews();
+void request_callback(HTTPResult r)
+{
     result = r;
     completed = true;
 }
 
-int main() {
-    char *tstartXML = "<title>"; //RSS XML start title
-    char *tendXML ="</title>"; //RSS XML end title
-    char *tsptr;
-    char *teptr;
-    int i=0,j=0;
+int main()
+{
+
     // the eth and HTTP code has be taken directly from the HTTPStream documentation page
     // see http://mbed.org/cookbook/HTTP-Client-Data-Containers
     lcd.cls();
@@ -30,11 +29,78 @@
         return -1;
     }
     lcd.printf("\n\r net ok");
+    wait(0.5);
+    lcd.cls();
+    /*  HTTPStream stream;
+      char BigBuf[2048 + 1] = {0};
+      stream.readNext((byte*)BigBuf, 2048); //Point to buffer for the first read
+      //CNN Tech News RSS Feed - get web page with XML
+      HTTPResult r = http.get("http://online.fahrplan.zvv.ch/bin/help.exe/dn?tpl=rss_feed_VBZ", &stream, request_callback);
+      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>"
+                  if ((tsptr!=NULL)&&(teptr!=NULL)) {
+                      //i=0;
+                      // loop to scroll characters slowly across LCD
+                      for (j=0; j<(strlen(tsptr)-strlen(teptr)); j++) {
+                          //lcd.cls(); // clear screen before writing a new line
+                          // loop to output a line on the LCD
+                          for (i=0; ((i<16)&&(tsptr[i+j-1] != '<')); i++) {
+                              lcd.putc(tsptr[i+j]);
+                          }
+      lcd.putc(tsptr[j]);
+       //if (j==0) wait(1.2); //add first line delays for scroll timing
+       wait(.1); //delay for charcter scroll timing
+    }
+    wait(.4);
+    lcd.cls(); //clear LCD between news items
+    wait(.2);
+    }
+    } while (tsptr!=NULL); // No more "<title>"s in BigBuf to display
+    stream.readNext((byte*)BigBuf, 2048); //Buffer has been read, now we can put more data in it
+    }
+    }*/
+    loadZVVNews();
+    while(true) {
+        completed = false;
+        if (result == HTTP_OK) {
+
+            lcd.printf("Reload in 5 sec\n");
+            
+            wait(5);
+            lcd.cls();
+            loadZVVNews();
+
+            //lcd.cls();
+            //lcd.printf(" Read complete\n\r");
+        } else {
+            lcd. printf(" Error %d\n", result);
+            wait(1.2);
+            lcd.cls();
+            loadZVVNews();
+        }
+    }
+}
+
+void loadZVVNews()
+{
+    char *tstartXML = "<title>"; //RSS XML start title
+    char *tendXML ="</title>"; //RSS XML end title
+    char *tsptr;
+    char *teptr;
+    int j=0;
     HTTPStream stream;
-    char BigBuf[2048 + 1] = {0};
-    stream.readNext((byte*)BigBuf, 2048); //Point to buffer for the first read
+    char BigBuf[4096 + 1] = {0};
+    stream.readNext((byte*)BigBuf, 4096); //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);
+    HTTPResult r = http.get("http://online.fahrplan.zvv.ch/bin/help.exe/dn?tpl=rss_feed_VBZ", &stream, request_callback);
     while (!completed) {
         Net::poll(); // Polls the Networking stack
         if (stream.readable()) { // check for end of file
@@ -46,31 +112,25 @@
                 teptr = strstr(tsptr,tendXML); // find <\title> in string - NULL if not
                 if (tsptr!=NULL) tsptr = tsptr + strlen(tstartXML);// move to char after "<title>"
                 if ((tsptr!=NULL)&&(teptr!=NULL)) {
-                    i=0;
+                    //i=0;
                     // loop to scroll characters slowly across LCD
-                    for (j=0; (j+15)<(strlen(tsptr)-strlen(teptr)); j++) {
-                        lcd.cls(); // clear screen before writing a new line
+                    for (j=0; j<(strlen(tsptr)-strlen(teptr)); j++) {
+                        //lcd.cls(); // clear screen before writing a new line
                         // loop to output a line on the LCD
-                        for (i=0; ((i<16)&&(tsptr[i+j-1] != '<')); i++) {
+                        /*for (i=0; ((i<16)&&(tsptr[i+j-1] != '<')); i++) {
                             lcd.putc(tsptr[i+j]);
-                        }
-                        if (j==0) wait(1.2); //add first line delays for scroll timing
-                        wait(.2); //delay for charcter scroll timing
+                        }*/
+                        lcd.putc(tsptr[j]);
+                        //if (j==0) wait(1.2); //add first line delays for scroll timing
+                         //delay for charcter scroll timing
                     }
-                    wait(.4);
+                    wait(2.5);
                     lcd.cls(); //clear LCD between news items
-                    wait(.2);
+                    
                 }
             } while (tsptr!=NULL); // No more "<title>"s in BigBuf to display
-            stream.readNext((byte*)BigBuf, 2048); //Buffer has been read, now we can put more data in it
+            stream.readNext((byte*)BigBuf, 4096); //Buffer has been read, now we can put more data in it
         }
     }
     lcd.cls();
-    if (result == HTTP_OK) {
-        lcd.cls();
-        lcd.printf(" Read complete\n\r");
-    } else {
-        lcd. printf(" Error %d\n", result);
-        return -1;
-    }
-}
+}
\ No newline at end of file