Matrix-orbital LK162-12 Legacy Manual de usuario descargar pdf (Pagina 25)

LK162-12 rev 4 25

Custom characters occupy a 5 x 8 pixel matrix. Built-in characters are 5 x 7: 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:

MSB LSB

* * * 1 2 3 4 5 Data Byte 1

* * * 6 7 8 9 10 Data Byte 2

* * * 11

14 15 Data Byte 3

* * * 16

19 20 Data Byte 4

* * * 21

24 25 Data Byte 5

* * * 26

29 30 Data Byte 6

* * * 31

34 35 Data Byte 7

* * * 36

39 40 Data Byte 8

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:

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

36 37 38 39 40

Cursor Line

Note: Custom characters will be erased if any of the "initialize bar graph" commands are issued.

Example of a degree symbol:

txUart.sendByte(0xFE); //command prefix

txUart.sendByte('N'); //custom character command

txUart.sendByte(0x00); //custom character value 0-7

txUart.sendByte(12); //8 bytes to create

txUart.sendByte(18); //the custom character

txUart.sendByte(18);

txUart.sendByte(12);

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Matrix-orbital LK162-12 Legacy Manual de usuario Pagina 25