i'm trying to convert the strings that i receive in ascii code from a raspberry pi keyboard.
im have the serial receiving and i created this function to convert the strings that come from the serial to use then in a switch statement. switch statements only work with Int type variables.
i get this error in the function :
exit status 1
conversion from 'int' to 'String' is ambiguous
Code:
void conv_String (String intString) {
String val = 'intString';
int result = val.toInt();
return result;
}
Any good idea or code for arduino to convert Strings to Int are welcome
they are simple strings 3 Char more or less they are the ascii codes of the Keyboard coming from the serial like this number "103" up key "108" down key
thank you all.
String val = 'intString';Single quotes for single characters, double quotes for strings.
I can't figure out beyond that what you're trying to do.
Thank you !!! >:( >:( >:(
Trying to convert the name of a String to an integer is not at all the same as converting the contents of the string to an integer.
void conv_String (String intString) { ////// RETURNING TYPE 'void' MEANS NO VALUE IS RETURNED
String val = "intString"; ////// THIS CREATES A 'String' CONTAINING THE WORD "intString".
int result = val.toInt(); //////// THE WORD "intString" IS NOT A NUMBER SO THIS SETS 'result' TO ZERO
return result; //////// WHEN YOUR FUNCTION RETURNS 'void' YOU CAN'T RETURN A VALUE
}
To do what you wanted:
int conv_String (String intString) { ////// Return an 'int' value
return intString.toInt();
}
Your function now contains one line. Perhaps you should use "var = myString.toInt();" in place of "var = conv_String(myString);". It would be easier to read since "conv_String()" is not as descriptive as ".toInt()".