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DataAquisitieMisan3

Dependencies:   LM75B MMA7660 Servo mbed

Fork of DataAquisitieMisan by Michiel Van Endert

C12832/TextDisplay.cpp@4:0632609d4862, 2015-05-19 (annotated)

Committer:
sandermbed
Date:
Tue May 19 11:58:45 2015 +0000
Revision:
4:0632609d4862
Parent:
1:2b6bdf677573 
dd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mvanendert 1:2b6bdf677573 1 /* mbed TextDisplay Display Library Base Class
mvanendert 1:2b6bdf677573 2 * Copyright (c) 2007-2009 sford
mvanendert 1:2b6bdf677573 3 * Released under the MIT License: http://mbed.org/license/mit
mvanendert 1:2b6bdf677573 4 */
mvanendert 1:2b6bdf677573 5
mvanendert 1:2b6bdf677573 6 #include "TextDisplay.h"
mvanendert 1:2b6bdf677573 7
mvanendert 1:2b6bdf677573 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
mvanendert 1:2b6bdf677573 9 _row = 0;
mvanendert 1:2b6bdf677573 10 _column = 0;
mvanendert 1:2b6bdf677573 11 if (name == NULL) {
mvanendert 1:2b6bdf677573 12 _path = NULL;
mvanendert 1:2b6bdf677573 13 } else {
mvanendert 1:2b6bdf677573 14 _path = new char[strlen(name) + 2];
mvanendert 1:2b6bdf677573 15 sprintf(_path, "/%s", name);
mvanendert 1:2b6bdf677573 16 }
mvanendert 1:2b6bdf677573 17 }
mvanendert 1:2b6bdf677573 18
mvanendert 1:2b6bdf677573 19 int TextDisplay::_putc(int value) {
mvanendert 1:2b6bdf677573 20 if(value == '\n') {
mvanendert 1:2b6bdf677573 21 _column = 0;
mvanendert 1:2b6bdf677573 22 _row++;
mvanendert 1:2b6bdf677573 23 if(_row >= rows()) {
mvanendert 1:2b6bdf677573 24 _row = 0;
mvanendert 1:2b6bdf677573 25 }
mvanendert 1:2b6bdf677573 26 } else {
mvanendert 1:2b6bdf677573 27 character(_column, _row, value);
mvanendert 1:2b6bdf677573 28 _column++;
mvanendert 1:2b6bdf677573 29 if(_column >= columns()) {
mvanendert 1:2b6bdf677573 30 _column = 0;
mvanendert 1:2b6bdf677573 31 _row++;
mvanendert 1:2b6bdf677573 32 if(_row >= rows()) {
mvanendert 1:2b6bdf677573 33 _row = 0;
mvanendert 1:2b6bdf677573 34 }
mvanendert 1:2b6bdf677573 35 }
mvanendert 1:2b6bdf677573 36 }
mvanendert 1:2b6bdf677573 37 return value;
mvanendert 1:2b6bdf677573 38 }
mvanendert 1:2b6bdf677573 39
mvanendert 1:2b6bdf677573 40 // crude cls implementation, should generally be overwritten in derived class
mvanendert 1:2b6bdf677573 41 void TextDisplay::cls() {
mvanendert 1:2b6bdf677573 42 locate(0, 0);
mvanendert 1:2b6bdf677573 43 for(int i=0; i<columns()*rows(); i++) {
mvanendert 1:2b6bdf677573 44 putc(' ');
mvanendert 1:2b6bdf677573 45 }
mvanendert 1:2b6bdf677573 46 }
mvanendert 1:2b6bdf677573 47
mvanendert 1:2b6bdf677573 48 void TextDisplay::locate(int column, int row) {
mvanendert 1:2b6bdf677573 49 _column = column;
mvanendert 1:2b6bdf677573 50 _row = row;
mvanendert 1:2b6bdf677573 51 }
mvanendert 1:2b6bdf677573 52
mvanendert 1:2b6bdf677573 53 int TextDisplay::_getc() {
mvanendert 1:2b6bdf677573 54 return -1;
mvanendert 1:2b6bdf677573 55 }
mvanendert 1:2b6bdf677573 56
mvanendert 1:2b6bdf677573 57 void TextDisplay::foreground(uint16_t colour) {
mvanendert 1:2b6bdf677573 58 _foreground = colour;
mvanendert 1:2b6bdf677573 59 }
mvanendert 1:2b6bdf677573 60
mvanendert 1:2b6bdf677573 61 void TextDisplay::background(uint16_t colour) {
mvanendert 1:2b6bdf677573 62 _background = colour;
mvanendert 1:2b6bdf677573 63 }
mvanendert 1:2b6bdf677573 64
mvanendert 1:2b6bdf677573 65 bool TextDisplay::claim (FILE *stream) {
mvanendert 1:2b6bdf677573 66 if ( _path == NULL) {
mvanendert 1:2b6bdf677573 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
mvanendert 1:2b6bdf677573 68 return false;
mvanendert 1:2b6bdf677573 69 }
mvanendert 1:2b6bdf677573 70 if (freopen(_path, "w", stream) == NULL) {
mvanendert 1:2b6bdf677573 71 // Failed, should not happen
mvanendert 1:2b6bdf677573 72 return false;
mvanendert 1:2b6bdf677573 73 }
mvanendert 1:2b6bdf677573 74 // make sure we use line buffering
mvanendert 1:2b6bdf677573 75 setvbuf(stdout, NULL, _IOLBF, columns());
mvanendert 1:2b6bdf677573 76 return true;
mvanendert 1:2b6bdf677573 77 }