11 years ago.

Help with printing strings to LCD please...

Hi all, I'm new to mbed. I have a LPC1768 and use an NXP LPCXpresso (OM13016) baseboard. I have successfully programmed the LCD "Hello World" program.

#include "mbed.h"
#include "TextLCD.h"

TextLCD lcd(p10, p12, p15, p16, p29, p30); // RS, EN, D4, D5, D6, D7

int main() {
      lcd.cls();
      lcd.printf("NGX Technologies");
}

And I have been able to write some text on the second row too :)

But my next aim I just can't figure out. What I want to do is set up an array of various text strings, something like:

const string messages[] = {"First Message", "Message No.2", "Last Message"};

Then use something like this to toggle the messages:

lcd.printf(messages[i])

Where I could increment "i" via a counter or some other way. But when I compile I get an error saying: 'no suitable conversion function from "const std::string" to "const char*" exists'

I want to be able to write different pieces of text and just call the name of that text and an array of them would be preferable, like the 'messages[]' example.

My question is how can I print to the LCD a string from an array of different strings?

Any help would be great, but please, go easy on me. I am a beginner... Thanks Chris