I have an ebook which is converted to a .txt file saved on an sd card which is connected to the arduino. I'm trying to display the words from the book on a 16x2 lcd display on word at a time. It works mostly except when it reads a word that has an apostrophe or a pipe symbol it does not display correctly to the lcd display or the serial output.
For example the word "author's" will be displayed as "authorâs" (edit: there is actually two boxes between the "â" and the s that is not displaying on this forum) on both the lcd display and serial output.
I've spent an entire day now with this one problem hopefully there is a mistake someone can pick up on :/
#include <LiquidCrystal.h>
#include <SPI.h>
#include <SD.h>
const int chipSelect = 53;
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
char nextChar;
String wordBuffer = "";
void setup() {
lcd.begin(16, 2);
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized:
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
// don't do anything more:
while (1);
}
Serial.println("card initialized.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
File dataFile = SD.open("datalog.txt");
if (dataFile) {
while (dataFile.available()) {
nextChar = dataFile.read();
if (isWhitespace(nextChar)){
lcd.print(wordBuffer);
Serial.println(wordBuffer);
lcd.display();
delay(500);
wordBuffer = "";
lcd.clear();
}
else{
wordBuffer = wordBuffer + nextChar;
wordBuffer.trim();
}
}
dataFile.close();
}
// if the file isn't open, pop up an error:
else {
Serial.println("error opening datalog.txt");
}
}
void loop() {
}
