Matrix-orbital GLK19264-7T-1U Bedienungsanleitung PDF herunterladen (Seite 54)

12.5 Get Filesystem Directory

Syntax

Hexadecimal 0xFE 0xB3

Decimal 254 179

Description This command will return a directory of the contents of the ﬁle system.

The ﬁrst byte returned will be a hex value representing the number of

entries in the ﬁlesystem, followed by four bytes for each entry. See the

following tables:

Filesystem Header

Bytes Description

1 Hex value representing the number

of entries in the ﬁlesystem

File Entry

Bytes Description

1 Flag: Hex value of 0x00 indicates

that this ﬁle entry has not been used.

1 FileID/Type: 1st bit is the ﬁle type

(0: Font, 1: Bitmap). Next 7 bits are

the ﬁle ID.

1 File Size: LSB

1 File Size: MSB

Remembered No

12.6 Filesystem Upload

Syntax

Hexadecimal 0xFE 0xB0 [Size] [Data]

Decimal 254 176 [Size] [Data]

Parameters

Parameter Length Description

Size 4 LSB to MSB ﬁlesystem image data

Data var Actual data to upload

Description This command will upload a ﬁlesystem image, LSB to MSB to the

display (16KB). The size used is almost always the entire 16kB,

meaning the values 0x00 0x40 0x00 0x00 must be issued. Afterwhich

the ﬁlesystem data can be uploaded LSB to MSB in the same manner as

a font or bitmap ﬁle.

Remembered Always

12.7 Downloading a File

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Matrix-orbital GLK19264-7T-1U Bedienungsanleitung Seite 54