GLK240128-25-WB-VPT Matrix Orbital, GLK240128-25-WB-VPT Datasheet - Page 39

• Manufacturer Part Number: GLK240128-25-WB-VPT
• Description: LCD GRAPHIC DISPL 240X128 BLU WH
• Manufacturer: Matrix Orbital
• Series: GLK240128-25r

Specifications of GLK240128-25-WB-VPT

• Display Type: LCD - Color
• Display Mode: Transmissive
• Viewing Area: 114.00mm L x 64.00mm W
• Backlight: LED - Blue
• Dot Pixels: 240 x 128
• Interface: I²C, RS232, TTL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Dot Size: -
• Dot Pitch: -
• Other names: GLK240128-25 -WB-VPT; GLK240128-25 -WB-VPT

12.1 Wipe
Filesystem
Completely erase all fonts and bitmaps from a graphic display. Extended length of the command is intended to
prevent accidental execution. To ensure filesystem integrity, cycle power to the display after erasure.
12.2 Delete a File
Removes a single font or bitmap file given the type and unique identification number. Cycle power after deletion.
Type
ID
12.3 Get Filesystem
Space
Returns the amount of space remaining in the display for font or bitmap uploads.
Response
12.4 Get Filesystem
Directory
Returns a directory to the contents of the filesystem. The total number and type of each entry will be provided.
Response
12.5 Filesystem
Upload
This command will upload a filesystem image to the display. The size used is almost always the entire 16kB
memory. Filesystem data can be uploaded LSB to MSB in the same manner as a font or bitmap file.
Size
Data
33
6.12 Filesystem
1 byte, 0 for font or 1 for bitmap
2 bytes, unique identification number of font or bitmap to be deleted
Size MSB
Type/ID
Size LSB
Flag
4 bytes, number of bytes remaining in memory, LSB to MSB
variable length, 2 bytes representing number of entries plus 8 identification bytes for each entry
4 bytes, size of the filesystem to upload, LSB to MSB
variable length, data to upload
Dec
Hex
ASCII
Dec
Hex
MSB designates file type, 0 for font or 1 for bitmap, remaining bits indicate ID number
Dec
Hex
254 33 89 33
Dec
Hex
Dec
Hex
FE 21 59 21
254 176
■ ! Y !
254 173
FE B0
254 175
254 179
FE AD
Description
FE AF
FE B3
Bit
Size Data
Size Data
Table 35: Filesystem Identification Bytes
Type ID
Type ID
Table 36: Extended Byte Descriptions
a value of 0 indicates entry is not in use
most significant byte of the file size
least significant byte of the file size
Size MSB
3
Size LSB
2
Type/ID
1
Flag
0