Type

Description

Memory Used

BOOLEAN

A single bit variable and has only two possible values, 1 or 0. mIoTa BASIC has several Boolean constants already defined to make programs easier to read.

0 can be written as ‘OFF’ or ‘FALSE’

1 can be written as ‘ON’ or ‘TRUE’

Note: As a Boolean is stored as a single byte, if the byte contains anything other than 0 then the result will be read as 1 (True), otherwise 0 (False).

1 byte

BYTE

An 8 bit number variable that has a value of 0 to 255

1 byte

WORD

A 16 bit number variable that has a value of 0 to 32767

2 bytes

INTEGER

A 16 bit number variable that has a value of  32768 to 32767

2 bytes

DOUBLEWORD

A 32 bit number variable that has a value of 0 to 4294967295

4 bytes

LONGINTEGER

A 32 bit number variable that has a value of  -2147483648 to 2147483647

4 bytes

IPADDRESS

A variable containing an Internet Protocol Address (IPv4).

This is a 32 bit variable that represents the address of a device on a network. In mIoTa BASIC these are written in human readable form as four bytes (0-255) separated by a ‘.’ and preceded by an ‘@’ sign.

E.g. myip = @192.168.0.1;

4 bytes

MACADDRESS

A variable containing a Media Access Control Address (MAC address). This is a 48 bit variable representing the unique identifier assigned to a devices network interface (Wifi or Ethernet).

In mIoTa BASIC these are written in human readable form as 6 Hexadecimal bytes (00 to FF) separated by a ‘:’ and proceeded by an ‘&’ sign.

E.g. mymac = &00:05:4F:80:00:FF;

6 bytes

ROMADDRESS

A variables containing a 1-WIRE device address. This is a 64 bit variable representing the unique identifier assigned to a 1-WIRE bus device.

In mIoTa BASIC these are written as a long hexadecimal number preceded by a ‘#’ sign.

E.g. myrom = #28E3D1E302000073;

8 bytes

STRING

A variable containing a set number of bytes (also known as characters or char’s) up to a total of 128. The number of bytes in the string is set by the user, at design time, according to the maximum size that will be required as the string is used. Strings must be enclosed in single quotes.

E.g. mystr = ‘Hello, this is a string’;

Size set by the user +1 byte