u-blox / Mbed 2 deprecated IBMIoTClientEthernetExample

Port to C027 (using AppShield and Ethernet)

Dependencies:   C12832 EthernetInterface LM75B MMA7660 MQTT mbed-rtos mbed

Fork of IBMIoTClientEthernetExample by IBM Watson IoT

C12832/TextDisplay.cpp@6:37b6d0d56190, 2014-08-20 (annotated)

Committer:
samdanbury
Date:
Wed Aug 20 12:45:14 2014 +0000
Revision:
6:37b6d0d56190
Code completely changed to improve the structure, flow and memory usage of the application

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /* mbed TextDisplay Display Library Base Class
samdanbury 6:37b6d0d56190 2 * Copyright (c) 2007-2009 sford
samdanbury 6:37b6d0d56190 3 * Released under the MIT License: http://mbed.org/license/mit
samdanbury 6:37b6d0d56190 4 */
samdanbury 6:37b6d0d56190 5
samdanbury 6:37b6d0d56190 6 #include "TextDisplay.h"
samdanbury 6:37b6d0d56190 7
samdanbury 6:37b6d0d56190 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
samdanbury 6:37b6d0d56190 9 _row = 0;
samdanbury 6:37b6d0d56190 10 _column = 0;
samdanbury 6:37b6d0d56190 11 if (name == NULL) {
samdanbury 6:37b6d0d56190 12 _path = NULL;
samdanbury 6:37b6d0d56190 13 } else {
samdanbury 6:37b6d0d56190 14 _path = new char[strlen(name) + 2];
samdanbury 6:37b6d0d56190 15 sprintf(_path, "/%s", name);
samdanbury 6:37b6d0d56190 16 }
samdanbury 6:37b6d0d56190 17 }
samdanbury 6:37b6d0d56190 18
samdanbury 6:37b6d0d56190 19 int TextDisplay::_putc(int value) {
samdanbury 6:37b6d0d56190 20 if(value == '\n') {
samdanbury 6:37b6d0d56190 21 _column = 0;
samdanbury 6:37b6d0d56190 22 _row++;
samdanbury 6:37b6d0d56190 23 if(_row >= rows()) {
samdanbury 6:37b6d0d56190 24 _row = 0;
samdanbury 6:37b6d0d56190 25 }
samdanbury 6:37b6d0d56190 26 } else {
samdanbury 6:37b6d0d56190 27 character(_column, _row, value);
samdanbury 6:37b6d0d56190 28 _column++;
samdanbury 6:37b6d0d56190 29 if(_column >= columns()) {
samdanbury 6:37b6d0d56190 30 _column = 0;
samdanbury 6:37b6d0d56190 31 _row++;
samdanbury 6:37b6d0d56190 32 if(_row >= rows()) {
samdanbury 6:37b6d0d56190 33 _row = 0;
samdanbury 6:37b6d0d56190 34 }
samdanbury 6:37b6d0d56190 35 }
samdanbury 6:37b6d0d56190 36 }
samdanbury 6:37b6d0d56190 37 return value;
samdanbury 6:37b6d0d56190 38 }
samdanbury 6:37b6d0d56190 39
samdanbury 6:37b6d0d56190 40 // crude cls implementation, should generally be overwritten in derived class
samdanbury 6:37b6d0d56190 41 void TextDisplay::cls() {
samdanbury 6:37b6d0d56190 42 locate(0, 0);
samdanbury 6:37b6d0d56190 43 for(int i=0; i<columns()*rows(); i++) {
samdanbury 6:37b6d0d56190 44 putc(' ');
samdanbury 6:37b6d0d56190 45 }
samdanbury 6:37b6d0d56190 46 }
samdanbury 6:37b6d0d56190 47
samdanbury 6:37b6d0d56190 48 void TextDisplay::locate(int column, int row) {
samdanbury 6:37b6d0d56190 49 _column = column;
samdanbury 6:37b6d0d56190 50 _row = row;
samdanbury 6:37b6d0d56190 51 }
samdanbury 6:37b6d0d56190 52
samdanbury 6:37b6d0d56190 53 int TextDisplay::_getc() {
samdanbury 6:37b6d0d56190 54 return -1;
samdanbury 6:37b6d0d56190 55 }
samdanbury 6:37b6d0d56190 56
samdanbury 6:37b6d0d56190 57 void TextDisplay::foreground(uint16_t colour) {
samdanbury 6:37b6d0d56190 58 _foreground = colour;
samdanbury 6:37b6d0d56190 59 }
samdanbury 6:37b6d0d56190 60
samdanbury 6:37b6d0d56190 61 void TextDisplay::background(uint16_t colour) {
samdanbury 6:37b6d0d56190 62 _background = colour;
samdanbury 6:37b6d0d56190 63 }
samdanbury 6:37b6d0d56190 64
samdanbury 6:37b6d0d56190 65 bool TextDisplay::claim (FILE *stream) {
samdanbury 6:37b6d0d56190 66 if ( _path == NULL) {
samdanbury 6:37b6d0d56190 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
samdanbury 6:37b6d0d56190 68 return false;
samdanbury 6:37b6d0d56190 69 }
samdanbury 6:37b6d0d56190 70 if (freopen(_path, "w", stream) == NULL) {
samdanbury 6:37b6d0d56190 71 // Failed, should not happen
samdanbury 6:37b6d0d56190 72 return false;
samdanbury 6:37b6d0d56190 73 }
samdanbury 6:37b6d0d56190 74 // make sure we use line buffering
samdanbury 6:37b6d0d56190 75 setvbuf(stdout, NULL, _IOLBF, columns());
samdanbury 6:37b6d0d56190 76 return true;
samdanbury 6:37b6d0d56190 77 }