int compiler errors

Using Arduino Programming Questions
#1

I have the following code that, I think, used to compile. But with the new compiler I get errors. Not sure what is going on.

code:

int readPassword()
{

byte hbyte = 0;
byte lbyte = 0;

lbyte = EEPROM.read(0);
hbyte = EEPROM.read(1);

//Return the recomposed pw by using bitshift.
return ((lbyte << 0) & 0xFF) + ((hbyte << 8) & 0xFFFF);

}

The call to the function in loop is…

int PassWord = readPassword();

I get the following error:

error: invalid conversion from ‘int (*)()’ to ‘int’ [-fpermissive]

What have I done?

#2

What have I done?

You have failed to post ALL of your code or ALL of your error message(s).

#3

Are you sure you copied that line right? The error message would seem to indicate you may have left off the parenthesis after the function name when you called it.

#4

Is the lowbyte at ‘0’ and highbyte at ‘1’ when the eeprom_read_word() and eeprom_write_word() are used ? I’m not sure.
This reads two bytes from position 0 and 1:

#include <avr/eeprom.h>

#define readPassword() eeprom_read_word( (uint16_t *) 0)

This forces that the byte at ‘0’ is the lowbyte and at ‘1’ is the highbyte:

#include <EEPROM.h>

#define readPassword() word( EEPROM.read(1), EEPROM.read(0))

https://www.arduino.cc/en/Reference/WordCast

P.S.: I didn’t check the code, the macro should be used to store the result into an integer.

#5

@rhartl: Please use code tags.

Read this before posting a programming question

Please edit your post, select the code, and put it between [code] … [/code] tags.

You can do that by hitting the “Code” icon above the posting area. It is the first icon, with the symbol: </>

#6

Delta_G

Thanks. That was precisely the problem.

#7