mbedStorage.h

00001 #include "mbed.h"
00002 /*  Allows easy enable and disable of log file.
00003  *  WARNING: Every time a file is changed on the MBED, it reconnects to the PC,
00004  *  resulting in hundrets of Autoplay notices appearing on your desktop window.
00005  *  Unplug the MBED from the PC for best results.
00006  *  Logging is extremely useful for debugging but should be disabled when not debugging.
00007  */
00008 bool logEnable = false; 
00009 LocalFileSystem local("local");
00010 
00011 /*  void writeFile(int r, int g, int b, int re)
00012  *  Write the values of each storage tube to the datafile.
00013  *  Ensures no negative values are written to the file.
00014  */
00015 void writeFile(int r, int g, int b, int re)
00016 {
00017     FILE* file = fopen("/local/df.txt","w"); // open file
00018     if(r >= 0) {
00019         fputc(r, file); // put char (data value) into file
00020     } else {
00021         fputc(0, file);
00022     }
00023     if(g >= 0) {
00024         fputc(g, file); 
00025     } else {
00026         fputc(0, file);
00027     }
00028     if(b >= 0) {
00029         fputc(b, file); 
00030     } else {
00031         fputc(0, file);
00032     }
00033     if(re >= 0) {
00034         fputc(re, file); 
00035     } else {
00036         fputc(0, file);
00037     }
00038     fclose(file); // close file
00039 }
00040 /*  int readFile(int index)
00041  *  Read a character from the datafile and return as an integer.
00042  */
00043 int readFile(int index)
00044 {
00045     FILE* file = fopen ("/local/df.txt","r"); // open file for reading
00046     int read_var = 0;
00047     for(int i = 0; i <= index; i++) {
00048         read_var = fgetc(file); // read data value
00049     }
00050     fclose(file); // close file
00051     return read_var;
00052 }
00053 
00054 /*  void log(char* text)
00055  *  Append a charcater array on a new line in the log file.
00056  */
00057 void log(char* text)
00058 {
00059     if(logEnable) {
00060         FILE* file = fopen ("/local/log.txt", "a");
00061         fputs(text, file);
00062         fputs("\r\n", file);
00063         fclose(file);
00064     }
00065 }
00066 /*  void clearLog()
00067  *  Clear the log file.
00068  */
00069 void clearLog()
00070 {
00071     FILE* file = fopen ("/local/log.txt", "w");
00072     fclose(file);
00073 }