stored hex values in notepad file with .ini extension how to read it in hex only via CAPL

Question

I have stored hex values in a text file with .ini extension along with address. But when i read it, it will not be in hex format it will be in character so is there any way to read value as hex and store it in byte in C language or in CAPL script?

Answer 1

I assume that you know how to read a text file in CAPL...

You can convert a hex string to a number using strtol(char s[], long result&):long. See the CAPL help (CAPL Function Overview -> General -> strol):

The number base is

• haxadecimal if the string starts with "0x"
• octal if the string starts with "0"
• decimal otherwise

Whitespace (space or tabs) at the start of the staring are ignored.

Example:

on start
{
    long number1, number2;

    strtol("0xFF", number1);
    strtol("-128", number2);

    write("number1 = %d", number1);
    write("number2 = %d", number2);
}

Output:

number1 = 255
number2 = -128

See also: strtoll(), strtoul(), strtoull(), strtod() and atol()

Update:

If the hex string does not start with "0x"...

on message 0x200
{
  if (this.byte(0) == hextol("38"))
    write("byte(0) == 56");
}

long hextol(char s[])
{
  long res;
  char xs[8];

  strncpy(xs, "0x", elcount(xs)); // cpy "0x" to 'xs'
  strncat(xs, s, elcount(xs));    // cat 'xs' and 's'
  strtol(xs, res);                // convert to long

  return res;
}