Erik - / Mbed 2 deprecated Mini_DK_clk

Simple clock program for LPC1768 Mini-DK

Dependencies:   RTC mbed

Mini_DK/SPI_TFT/TextDisplay.cpp@0:ab0aec01b38e, 2012-12-30 (annotated)

Committer:
Sissors
Date:
Sun Dec 30 21:31:56 2012 +0000
Revision:
0:ab0aec01b38e
v0.1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 0:ab0aec01b38e 1 /* mbed TextDisplay Display Library Base Class
Sissors 0:ab0aec01b38e 2 * Copyright (c) 2007-2009 sford
Sissors 0:ab0aec01b38e 3 * Released under the MIT License: http://mbed.org/license/mit
Sissors 0:ab0aec01b38e 4 */
Sissors 0:ab0aec01b38e 5
Sissors 0:ab0aec01b38e 6 #include "TextDisplay.h"
Sissors 0:ab0aec01b38e 7
Sissors 0:ab0aec01b38e 8 TextDisplay::TextDisplay(const char *name) : Stream(){
Sissors 0:ab0aec01b38e 9 _row = 0;
Sissors 0:ab0aec01b38e 10 _column = 0;
Sissors 0:ab0aec01b38e 11 if (name == NULL) {
Sissors 0:ab0aec01b38e 12 _path = NULL;
Sissors 0:ab0aec01b38e 13 } else {
Sissors 0:ab0aec01b38e 14 _path = new char[strlen(name) + 2];
Sissors 0:ab0aec01b38e 15 sprintf(_path, "/%s", name);
Sissors 0:ab0aec01b38e 16 }
Sissors 0:ab0aec01b38e 17 }
Sissors 0:ab0aec01b38e 18
Sissors 0:ab0aec01b38e 19 int TextDisplay::_putc(int value) {
Sissors 0:ab0aec01b38e 20 if(value == '\n') {
Sissors 0:ab0aec01b38e 21 _column = 0;
Sissors 0:ab0aec01b38e 22 _row++;
Sissors 0:ab0aec01b38e 23 if(_row >= rows()) {
Sissors 0:ab0aec01b38e 24 _row = 0;
Sissors 0:ab0aec01b38e 25 }
Sissors 0:ab0aec01b38e 26 } else {
Sissors 0:ab0aec01b38e 27 character(_column, _row, value);
Sissors 0:ab0aec01b38e 28 _column++;
Sissors 0:ab0aec01b38e 29 if(_column >= columns()) {
Sissors 0:ab0aec01b38e 30 _column = 0;
Sissors 0:ab0aec01b38e 31 _row++;
Sissors 0:ab0aec01b38e 32 if(_row >= rows()) {
Sissors 0:ab0aec01b38e 33 _row = 0;
Sissors 0:ab0aec01b38e 34 }
Sissors 0:ab0aec01b38e 35 }
Sissors 0:ab0aec01b38e 36 }
Sissors 0:ab0aec01b38e 37 return value;
Sissors 0:ab0aec01b38e 38 }
Sissors 0:ab0aec01b38e 39
Sissors 0:ab0aec01b38e 40 // crude cls implementation, should generally be overwritten in derived class
Sissors 0:ab0aec01b38e 41 void TextDisplay::cls() {
Sissors 0:ab0aec01b38e 42 locate(0, 0);
Sissors 0:ab0aec01b38e 43 for(int i=0; i<columns()*rows(); i++) {
Sissors 0:ab0aec01b38e 44 putc(' ');
Sissors 0:ab0aec01b38e 45 }
Sissors 0:ab0aec01b38e 46 }
Sissors 0:ab0aec01b38e 47
Sissors 0:ab0aec01b38e 48 void TextDisplay::locate(int column, int row) {
Sissors 0:ab0aec01b38e 49 _column = column;
Sissors 0:ab0aec01b38e 50 _row = row;
Sissors 0:ab0aec01b38e 51 }
Sissors 0:ab0aec01b38e 52
Sissors 0:ab0aec01b38e 53 int TextDisplay::_getc() {
Sissors 0:ab0aec01b38e 54 return -1;
Sissors 0:ab0aec01b38e 55 }
Sissors 0:ab0aec01b38e 56
Sissors 0:ab0aec01b38e 57 void TextDisplay::foreground(uint16_t colour) {
Sissors 0:ab0aec01b38e 58 _foreground = colour;
Sissors 0:ab0aec01b38e 59 }
Sissors 0:ab0aec01b38e 60
Sissors 0:ab0aec01b38e 61 void TextDisplay::background(uint16_t colour) {
Sissors 0:ab0aec01b38e 62 _background = colour;
Sissors 0:ab0aec01b38e 63 }
Sissors 0:ab0aec01b38e 64
Sissors 0:ab0aec01b38e 65 bool TextDisplay::claim (FILE *stream) {
Sissors 0:ab0aec01b38e 66 if ( _path == NULL) {
Sissors 0:ab0aec01b38e 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
Sissors 0:ab0aec01b38e 68 return false;
Sissors 0:ab0aec01b38e 69 }
Sissors 0:ab0aec01b38e 70 if (freopen(_path, "w", stream) == NULL) {
Sissors 0:ab0aec01b38e 71 // Failed, should not happen
Sissors 0:ab0aec01b38e 72 return false;
Sissors 0:ab0aec01b38e 73 }
Sissors 0:ab0aec01b38e 74 // make sure we use line buffering
Sissors 0:ab0aec01b38e 75 setvbuf(stdout, NULL, _IOLBF, columns());
Sissors 0:ab0aec01b38e 76 return true;
Sissors 0:ab0aec01b38e 77 }