Hi,
I want to store and read back the float value , as read as the string, anything is to convert the string to float value...
pls help.....


Regards,
Ajin Nadh.v.a

 

Do you know what format the float values are stored in? For example, it might be:

https://en.wikipedia.org/wiki/IEEE_floating_point

It you know that for certain then you can parse and display the individual bytes.

 

Try scanf function. That is in C, no idea how this works in arduino.

 

The easiest but least efficient approach is to use scanf/printf.

 

Do you mean a variable of type String or of type char array? If your number is stored in a String object (or variable), it has a function/method associated with it called toFloat(). Hence, conversion is one line of code.

void setup() {

  String myString="123.5";
  float myNumber=0;

  myNumber=myString.toFloat();
}

void loop() {
}

Here is a link to the Arduino reference pages, describing the String class.

I personally think this is easier than scanf/printf...

 

Do you mean a variable of type String or of type char array? If your number is stored in a String object (or variable), it has a function/method associated with it called toFloat(). Hence, conversion is one line of code.

void setup() {

  String myString="123.5";
  float myNumber=0;

  myNumber=myString.toFloat();
}

void loop() {
}

Here is a link to the Arduino reference pages, describing the String class.

I personally think this is easier than scanf/printf...

Thanks for the support,,,,