David Smart / RA8875 Featured

Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.

Dependents:   FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more

Fork of SPI_TFT by Peter Drescher

See Components - RA8875 Based Display

Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.

Offline Help Manual (Windows chm)

/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)

Diff: TextDisplay.cpp

Revision:
0:de9d1462a835
Child:
19:3f82c1161fd2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextDisplay.cpp	Mon Sep 10 19:23:26 2012 +0000
@@ -0,0 +1,77 @@
+/* mbed TextDisplay Display Library Base Class
+ * Copyright (c) 2007-2009 sford
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+ 
+#include "TextDisplay.h"
+
+TextDisplay::TextDisplay(const char *name) : Stream(name){
+    _row = 0;
+    _column = 0;
+    if (name == NULL) {
+        _path = NULL;
+    } else {
+        _path = new char[strlen(name) + 2];
+        sprintf(_path, "/%s", name);
+    }
+}
+    
+int TextDisplay::_putc(int value) {
+    if(value == '\n') {
+        _column = 0;
+        _row++;
+        if(_row >= rows()) {
+            _row = 0;
+        }
+    } else {
+        character(_column, _row, value);
+        _column++;
+        if(_column >= columns()) {
+            _column = 0;
+            _row++;
+            if(_row >= rows()) {
+                _row = 0;
+            }
+        }
+    }
+    return value;
+}
+
+// crude cls implementation, should generally be overwritten in derived class
+void TextDisplay::cls() {
+    locate(0, 0);
+    for(int i=0; i<columns()*rows(); i++) {
+        putc(' ');
+    }
+}
+
+void TextDisplay::locate(int column, int row) {
+    _column = column;
+    _row = row;
+}
+
+int TextDisplay::_getc() {
+    return -1;
+}
+        
+void TextDisplay::foreground(uint16_t colour) {
+    _foreground = colour;
+}
+
+void TextDisplay::background(uint16_t colour) {
+    _background = colour;
+}
+
+bool TextDisplay::claim (FILE *stream) {
+    if ( _path == NULL) {
+        fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
+        return false;
+    }
+    if (freopen(_path, "w", stream) == NULL) {
+        // Failed, should not happen
+        return false;
+    }
+    // make sure we use line buffering
+    setvbuf(stdout, NULL, _IOLBF, columns());
+    return true;
+}