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3 deleting a file, 4 get filesystem space – Matrix Orbital GLC24064 User Manual

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Syntax

Hexadecimal

0xFE 0x21 0x59 0x21

Decimal

254 33 89 33

ASCII

254 “!” “Y” “!”

Description

This command completely erases the display’s non-volatile memory. It
removes all fonts, font metrics, bitmaps, and settings (current font,
cursor position, communication speed, etc.). It is an “odd” command in
that it is three bytes in length in order to prevent accidental execution.

NOTE

After deleting the file system it is important to cycle power to your display to

ensure the removal process is completed.

Remembered

Yes

11.3

Deleting a File

Syntax

Hexadecimal

0xFE 0xAD [type] [refID]

Decimal

254 173 [type] [refID]

Parameters

Parameter

Length

Description

type

1

Type of file (0:Font, 1:Bitmap)

refID

1

Reference ID of the file to delete.

Description

This command erases a single file at a time within the memory when
given two parameters: [type] and [refID]. The file type and reference
number are defined when the file is saved to the .

• [type] = 1: Bitmap
• [type] = 0: Font

NOTE

After deleting a file it is important to cycle power to your display to ensure file

system integrity.

Remembered

Yes

11.4

Get Filesystem Space

Syntax

Hexadecimal

0xFE 0xAF

Decimal

254 175

Description

This command will return 4 bytes, LSB to MSB for how many bytes are
remaining in the 16 KB on board memory.

Remembered

No

Matrix Orbital

GLC24064

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