Diff: TextLCDScroll.cpp

Revision:

0:0ae9963c4e06

Child:

2:66723c542cef

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCDScroll.cpp	Tue Mar 27 20:13:41 2012 +0000
@@ -0,0 +1,106 @@
+#include "TextLCDScroll.h"
+#include "mbed.h"
+
+#include <string>
+using namespace std;
+
+    TextLCDScroll::TextLCDScroll(PinName rs, PinName e, PinName d4, PinName d5,
+                  PinName d6, PinName d7, TextLCD::LCDType type): TextLCD(rs,e,d4,d5,d6,d7,type) {
+
+        _direction = new int[rows()];
+        _actPos = new int[rows()];
+        _stringArray = new string[rows()];
+        for (int i=0; i<rows(); i++) {
+            _direction[i]=1;
+            _actPos[i] = 0;
+            _stringArray[i] = "";
+        }
+        _spaces = string(columns(),' ');
+        //_mode = leftright;
+        _mode = left;
+
+        setSpeed(5);
+
+    }
+
+
+    bool TextLCDScroll::setLine( int Line, string str) {
+        if (Line >= 0 && Line < rows()) {
+            if ((str.length() > columns()) && (_mode == left))
+                _stringArray[Line] = _spaces + str + _spaces;
+            else
+                _stringArray[Line] = str;
+
+            // be sure to refresh the display
+            cls();
+            // start at beginning again
+            _actPos[Line] = 0;
+            _direction[Line] =1;
+            return(true);
+        } else {
+            return (false);
+        }
+    }
+
+    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);
+            return(true);
+        } else {
+            return(false);
+        }
+    }
+
+    bool TextLCDScroll::setScrollMode( ScrollModes mode) {
+        _mode = mode;
+        return(true);
+    }
+
+    void TextLCDScroll::ScrollRightLeft() {
+        int i;
+        for (i=0; i<rows(); i++) {
+            locate(0,i);
+            if (_stringArray[i].length() > columns()) {
+                printf(_stringArray[i].substr(_actPos[i],columns()).c_str());
+                if (_direction[i] == 1) {
+                    if (_stringArray[i].length() > _actPos[i]+columns()) {
+                        _actPos[i] += 1;
+                    } else {
+                        _direction[i] = -1;
+                    }
+                } else {
+                    if (_actPos[i] > 0) {
+                        _actPos[i] -= 1;
+                    } else {
+                        _direction[i]=1;
+                    }
+                }
+            } else {
+                printf(_stringArray[i].c_str());
+            }
+        }
+    }
+
+    void TextLCDScroll::ScrollLeft() {
+        int i;
+        for (i=0; i<rows(); i++) {
+            locate(0,i);
+            if (_stringArray[i].length() > columns()) {
+                printf(_stringArray[i].substr(_actPos[i],columns()).c_str());
+                if (_direction[i] == 1) {
+                    if (_stringArray[i].length() > _actPos[i]+columns()) {
+                        _actPos[i] += 1;
+                    } else {
+                        _actPos[i]=0;
+                    }
+                }
+            } else {
+                printf(_stringArray[i].c_str());
+            }
+        }
+    }
+