3 saving custom characters – Matrix Orbital VK204-25 Legacy User Manual
Page 28
Syntax
Hexadecimal
0xFE 0x4E [refID] [data]
Decimal
254 78 [refID] [data]
ASCII
254 “N” [refID] [data]
Parameters
Parameter
Length
Description
refID
1
Character reference ID (0-7).
data
8
Character data.
Description
The VK204-25-USB allows for upta to eight custom defined characters
to be added onto the the character set. A custom character is a five
by eight pixel matrix with each row represented by a byte value. For
example:
Custom Character ’h’
Decimal
Hex
1
0
0
0
0
16
0x10
1
0
0
0
0
16
0x10
1
0
0
0
0
16
0x10
1
0
0
0
0
16
0x10
1
0
1
1
0
22
0x16
1
1
0
0
1
25
0x19
1
0
0
0
1
17
0x11
1
0
0
0
1
17
0x11
Each bit value of one, in the table, represents an on pixel, whereas a value
of zero represents a pixel that is turned off. Therefore in order to define
custom character ’h’ you would send the command byte prefix 254 fol-
lowed by the command 78. Next, you will have to select the memory
location in which you wish to save the character in. The available mem-
ory locations for this command are zero through to seven. After sending
the memory location, or [refID], you may then send the eight byte custom
character data in sequence from the top to the bottom.
Once you have defined a custom character you may display it by sending
the display module the [refID]. For example if a custom character was
saved in position one, the command to display the custom character, at
the current cursor position, would be simply to send the number one to
the display module without quotes.
Remembered
No
6.3
Saving Custom Characters
Syntax
Hexadecimal
0xFE 0xC1 [Bank] [ID] [Data]
Decimal
254 193 [Bank] [ID] [Data]
Parameters
Parameter
Length
Description
Bank
1
Memory bank to save to (0-4).
ID
1
Character ID (0-7)
Data
8
Character Definition
Matrix Orbital
VK204-25-USB
24