jim hamblen
This demo uses the mbed RTOS to run eight threads (including main). The threads are using different I/O devices on the application board. Several of the threads output to the LCD and an OS mutex lock is used to control access to the LCD and make the LCD thread safe.
Dependencies: C12832_lcd LCD_fonts mbed-rtos mbed
Fork of
lab1
by 
Peter Drescher
Diff: C12832_lcd/TextDisplay.cpp
- Revision:
- 1:1c6a9eaf55b5
- Parent:
- 0:f6a57b843f79
- Child:
- 2:a69c8c5f5b03
--- a/C12832_lcd/TextDisplay.cpp Mon Oct 15 21:48:28 2012 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,77 +0,0 @@
-/* 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;
-}