Matrix Orbital GLC24064 - Manual (Page 31)

Table 10: Explanation of Bytes in the File
FF FF placeholders for actual EOF
05 font width
07 font height
68 first ASCII character defined
70 last ASCII character defined
00 0F offset to definition of first character (“h”)
05 number of bytes in definition of first character
00 14 offset to definition of second character (“i”)
03 number of bytes in definition of second character
00 017 offset to definition of third character (“j”)
04 number of bytes in definition of third character
7F 04 81 80 07 definition of first character
C4 3E 10 definition of second character
02 20 B1 07 definition of third character
5.5 Working with Bitmap Files
Uploading a bitmap is the same as uploading a font file except that the character header information is
not required.
The bitmap file consists of a header followed by the bitmap data. The header format is as follows;
Placeholder for actual EOF (2 bytes, use 0xFF 0xFF - these bytes will be set to their final value by the
module) x size of bitmap (1 byte) y size of bitmap (1 byte)
Bitmap data follows with the bits organized vertically from the top left. The last byte may be padded
with zeros.
6 Miscellaneous Commands
6.1 General
The commands listed in this chapter don’t readily fit in any of the other categories, or are used in more
than one category.
6.1.1 Clear Display (254 88)
This command clears the display and resets the text write position to the top left of the screen.
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