Thierry CRESSON / seeedstudio-epaperV20

Come from standard seeed epaper, but adding SPI signal in construtor

Fork of seeedstudio-epaper by Nordic Pucks

TextDisplay.cpp@2:c5bb7d34974d, 2015-11-13 (annotated)

Committer:
thierryc49
Date:
Fri Nov 13 20:46:53 2015 +0000
Revision:
2:c5bb7d34974d
lib from seedstudio-epaper, Add SPI in parameter's constructor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
thierryc49 2:c5bb7d34974d 1 /* mbed TextDisplay Display Library Base Class
thierryc49 2:c5bb7d34974d 2 * Copyright (c) 2007-2009 sford
thierryc49 2:c5bb7d34974d 3 * Released under the MIT License: http://mbed.org/license/mit
thierryc49 2:c5bb7d34974d 4 */
thierryc49 2:c5bb7d34974d 5
thierryc49 2:c5bb7d34974d 6 #include "TextDisplay.h"
thierryc49 2:c5bb7d34974d 7
thierryc49 2:c5bb7d34974d 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
thierryc49 2:c5bb7d34974d 9 _row = 0;
thierryc49 2:c5bb7d34974d 10 _column = 0;
thierryc49 2:c5bb7d34974d 11 if (name == NULL) {
thierryc49 2:c5bb7d34974d 12 _path = NULL;
thierryc49 2:c5bb7d34974d 13 } else {
thierryc49 2:c5bb7d34974d 14 _path = new char[strlen(name) + 2];
thierryc49 2:c5bb7d34974d 15 sprintf(_path, "/%s", name);
thierryc49 2:c5bb7d34974d 16 }
thierryc49 2:c5bb7d34974d 17 }
thierryc49 2:c5bb7d34974d 18
thierryc49 2:c5bb7d34974d 19 int TextDisplay::_putc(int value) {
thierryc49 2:c5bb7d34974d 20 if(value == '\n') {
thierryc49 2:c5bb7d34974d 21 _column = 0;
thierryc49 2:c5bb7d34974d 22 _row++;
thierryc49 2:c5bb7d34974d 23 if(_row >= rows()) {
thierryc49 2:c5bb7d34974d 24 _row = 0;
thierryc49 2:c5bb7d34974d 25 }
thierryc49 2:c5bb7d34974d 26 } else {
thierryc49 2:c5bb7d34974d 27 character(_column, _row, value);
thierryc49 2:c5bb7d34974d 28 _column++;
thierryc49 2:c5bb7d34974d 29 if(_column >= columns()) {
thierryc49 2:c5bb7d34974d 30 _column = 0;
thierryc49 2:c5bb7d34974d 31 _row++;
thierryc49 2:c5bb7d34974d 32 if(_row >= rows()) {
thierryc49 2:c5bb7d34974d 33 _row = 0;
thierryc49 2:c5bb7d34974d 34 }
thierryc49 2:c5bb7d34974d 35 }
thierryc49 2:c5bb7d34974d 36 }
thierryc49 2:c5bb7d34974d 37 return value;
thierryc49 2:c5bb7d34974d 38 }
thierryc49 2:c5bb7d34974d 39
thierryc49 2:c5bb7d34974d 40 // crude cls implementation, should generally be overwritten in derived class
thierryc49 2:c5bb7d34974d 41 void TextDisplay::cls() {
thierryc49 2:c5bb7d34974d 42 locate(0, 0);
thierryc49 2:c5bb7d34974d 43 for(int i=0; i<columns()*rows(); i++) {
thierryc49 2:c5bb7d34974d 44 putc(' ');
thierryc49 2:c5bb7d34974d 45 }
thierryc49 2:c5bb7d34974d 46 }
thierryc49 2:c5bb7d34974d 47
thierryc49 2:c5bb7d34974d 48 void TextDisplay::locate(int column, int row) {
thierryc49 2:c5bb7d34974d 49 _column = column;
thierryc49 2:c5bb7d34974d 50 _row = row;
thierryc49 2:c5bb7d34974d 51 }
thierryc49 2:c5bb7d34974d 52
thierryc49 2:c5bb7d34974d 53 int TextDisplay::_getc() {
thierryc49 2:c5bb7d34974d 54 return -1;
thierryc49 2:c5bb7d34974d 55 }
thierryc49 2:c5bb7d34974d 56
thierryc49 2:c5bb7d34974d 57 void TextDisplay::foreground(uint16_t colour) {
thierryc49 2:c5bb7d34974d 58 _foreground = colour;
thierryc49 2:c5bb7d34974d 59 }
thierryc49 2:c5bb7d34974d 60
thierryc49 2:c5bb7d34974d 61 void TextDisplay::background(uint16_t colour) {
thierryc49 2:c5bb7d34974d 62 _background = colour;
thierryc49 2:c5bb7d34974d 63 }
thierryc49 2:c5bb7d34974d 64
thierryc49 2:c5bb7d34974d 65 bool TextDisplay::claim (FILE *stream) {
thierryc49 2:c5bb7d34974d 66 if ( _path == NULL) {
thierryc49 2:c5bb7d34974d 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
thierryc49 2:c5bb7d34974d 68 return false;
thierryc49 2:c5bb7d34974d 69 }
thierryc49 2:c5bb7d34974d 70 if (freopen(_path, "w", stream) == NULL) {
thierryc49 2:c5bb7d34974d 71 // Failed, should not happen
thierryc49 2:c5bb7d34974d 72 return false;
thierryc49 2:c5bb7d34974d 73 }
thierryc49 2:c5bb7d34974d 74 // make sure we use line buffering
thierryc49 2:c5bb7d34974d 75 setvbuf(stdout, NULL, _IOLBF, columns());
thierryc49 2:c5bb7d34974d 76 return true;
thierryc49 2:c5bb7d34974d 77 }