Revision 5:e3b565c4190c, committed 2013-04-04

Comitter:

charly

Date:

Thu Apr 04 19:07:26 2013 +0000

Parent:

4:92a07dbc9222

Commit message:

Disable Ticker while changing settings. realloc instead of malloc

Changed in this revision

--- a/TextLCDScroll.cpp	Tue Mar 12 20:00:04 2013 +0000
+++ b/TextLCDScroll.cpp	Thu Apr 04 19:07:26 2013 +0000
@@ -12,7 +12,9 @@
     //_mode = leftright;
     _mode = left;
 
+    //set Speed and start Ticker
     setSpeed(5);
+    
     cls();
 
     // reduce interrupt level for the ticker timers. so other things (RF22 ) come first
@@ -33,12 +35,16 @@
 bool TextLCDScroll::setLine( int Line, char  *str)
 {
     if (Line >= 0 && Line < rows()) {
+        //stop interrupts
+        tick.detach();
         // free the old memory
-        if (line[Line] != NULL) {
-            free(line[Line]);
-        }
+        //if (line[Line] != NULL) {
+        //    free(line[Line]);
+        //}
         // malloc new space for string
-        line[Line] = (char*)malloc((strlen(str)+1)*sizeof(char));
+        //line[Line] = (char*)malloc((strlen(str)+1)*sizeof(char));
+        //Realocate memory
+        line[Line] = (char*)realloc(line[Line], (strlen(str)+1)*sizeof(char));
         //copy the string
         strcpy(line[Line], str);
         // be sure to refresh the display
@@ -46,20 +52,26 @@
         // start at beginning again
         _actPos[Line] = 0;
         _direction[Line] =1;
+        startTicker();
         return(true);
     } else {
         return (false);
     }
 }
 
+void TextLCDScroll::startTicker(){
+        if (_mode == leftright)
+            tick.attach(this,&TextLCDScroll::ScrollRightLeft, 1.0/_speed);
+        else
+            tick.attach(this,&TextLCDScroll::ScrollLeft, 1.0/_speed);
+}
+
 bool TextLCDScroll::setSpeed( int speed)
 {
     if ((speed >= 0.1) && (speed <= 10)) {
         tick.detach();
-        if (_mode == leftright)
-            tick.attach(this,&TextLCDScroll::ScrollRightLeft, 1.0/speed);
-        else
-            tick.attach(this,&TextLCDScroll::ScrollLeft, 1.0/speed);
+        _speed = speed;
+        startTicker();
         return(true);
     } else {
         return(false);

--- a/TextLCDScroll.h	Tue Mar 12 20:00:04 2013 +0000
+++ b/TextLCDScroll.h	Thu Apr 04 19:07:26 2013 +0000
@@ -86,6 +86,7 @@
     bool setScrollMode( ScrollModes mode);
 
 private:
+    void startTicker();
 
     void ScrollRightLeft();
 
@@ -97,6 +98,7 @@
     // these are changed in interrupt-routine!
     volatile int* _direction;
     volatile int* _actPos;
+    volatile int _speed;
     
     char* line[99];