User Manual

At times that the display or the host sees anything else other than 0x01 for confirmation (usually a 0x08) the
upload is aborted.
NOTES
• The GLK12232-25 has watch dog timer, set to 2.1 seconds in between transmissions,
in order prevent the display module from staying in a waiting state.
• Once the timeout has been reached the timer will reset the display and issue a 0xFE
0xD4 response to the host to signal that this has happened.
12.2 Wipe Filesystem
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.
Remembered Yes
12.3 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 GLK12232-25
memory when given two parameters: [type] and [ref]. The file type and
reference number are defined when the file is saved to the
GLK12232-25.
• [type] = 1: Bitmap
• [type] = 0: Font
Remembered Yes
12.4 Get Filesystem Space
Matrix Orbital GLK12232-25 45