Matrix Orbital VK162-12 Legacy User Manual
Page 26
5.1.6 Define Custom Character (254 78 [c] [8 bytes])
The dislay allows up to 8 user defined (custom) characters. These characters occupy the first 8 (0x00 to
0x07) places in the character set.
Custom characters occupy a 5x7 pixel matrix. Built in characters are 5x7: the bottom row of pixels is
normally reserved for the underline cursor. The underline cursor should be turned off if the bottom row of
pixels forms part of a custom character.
The characters are defined by issuing the command 254 78 [c] followed by 8 bytes to define the character.
[c] is the character number (0x00 to 0x07). The 8 bytes are mapped as shown below;
Table 7: 8 Byte Map
MSB LSB
*
*
*
1
2
3
4
5
Data Byte 0
*
*
*
6
7
8
9
10
Data Byte 1
*
*
*
11
12
13
14
15
Data Byte 2
*
*
*
16
17
18
19
20
Data Byte 3
*
*
*
21
22
23
24
25
Data Byte 4
*
*
*
26
27
28
29
30
Data Byte 5
*
*
*
31
32
33
34
35
Data Byte 6
A "1" bit indicates an on (black) pixel, a "0" bit indicates an off (clear) pixel.
Once defined, a character is displayed simply by issuing a value (0x00 to 0x07) corresponding to the
character number. The character will be laid out as follows;
Table 8: Character Values
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Cursor Line
NOTE Custom characters will be erased if any of the "Initialize bar graph" commands
are issued.
Example of a degree symbol:
¡9¥Y)5¥E£¡ PG7"7187`¢a£¡1"VbP%79£cdReSfg¨£¨13DQB£BU57¢8h¤¢E1"4)Q9
Matrix Orbital
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