[FeatureRequest]: Meta Gcode int to ascii function

[AndyEveritt]

Is your feature request related to a problem? Please describe.

Being able to convert an array of ints into the corresponding ascii string would be useful when interacting with devices that respond in ascii over UART

The opposite to convert a string to an array of ints may also be useful.

Describe the solution you propose.

A new meta gcode function

var str = str({0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21})
echo var.str ; Hello World!

var arr = int("Hello World!")
echo var.arr ; {0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21}

Describe alternatives you've considered

Currently I have a macro to do this conversion but it is slow to iterate it over a long array.

var int = param.V

var searchArr = null;
var asciiArr = null;
var searchOffset = null;

if (var.int < 0x10)
    set var.searchArr = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F}
    set var.asciiArr = {"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", "BS", "HT", "\n", "VT", "FF", "CR", "SO", "SI"}
    set var.searchOffset = 0
elif (var.int < 0x20)
    set var.searchArr = {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F}
    set var.asciiArr = {"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US"}
    set var.searchOffset = 0x10
elif (var.int < 0x30)
    set var.searchArr = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F}
    set var.asciiArr = {" ", "!", """", "#", "$", "%", "&", "'", "(", ")", "*", "+", ",", "-", ".", "/"}
    set var.searchOffset = 0x20
elif (var.int < 0x40)
    set var.searchArr = {0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F}
    set var.asciiArr = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ":", ";", "<", "=", ">", "?"}
    set var.searchOffset = 0x30
elif (var.int < 0x50)
    set var.searchArr = {0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F}
    set var.asciiArr = {"@", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O"}
    set var.searchOffset = 0x40
elif (var.int < 0x60)
    set var.searchArr = {0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F}
    set var.asciiArr = {"P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "[", "\\", "]", "^", "_"}
    set var.searchOffset = 0x50
elif (var.int < 0x70)
    set var.searchArr = {0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F}
    set var.asciiArr = {"`", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o"}
    set var.searchOffset = 0x60
elif (var.int < 0x80)
    set var.searchArr = {0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F}
    set var.asciiArr = {"p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "{", "|", "}", "~", "DEL"}
    set var.searchOffset = 0x70
else
    echo "Error: Invalid input"
    M99

var index = floor(var.int - var.searchOffset)

if (exists(param.D))
    echo "int:", var.int
    echo "searchArr:", var.searchArr
    echo "searchOffset:", var.searchOffset
    echo "asciiArr:", var.asciiArr
    echo "index:", var.index
    echo var.searchArr[var.index]
    echo var.asciiArr[var.index]

set global.ret = var.asciiArr[var.index]

Provide any additional context or information.