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Programming
Font Loading
10/05/2009 TTP 7030™ Technical Manual P1003636-002
Char_bitmap data: Bitmap data for all characters that are to be defined.
Character bitmap data:
A character is made up of a bitmap the size of which is:
Char. width (X) * Char. Height (Y) bytes.
The bitmap data consists of bitmap patterns for each character in a character set for which the
parameter Char_width in the Char_matrix table is set to a value between 1 and 24. A character
that has its Char_width set to zero, is not included in the bitmap data.
The bitmap for one character is then defined according to the following table:
In order to minimize the required storage space, only rows between Ystart and Ystart+Yheight
are included in the character bitmap.
A
Char_Ystart
Baseline
Char_sizeX
Char_Yheight
Char_sizeY
Char_width
A
Char_pitch
Char_width
W
Char_pitch
Char_width
g
Char_pitch
Char_width
Example • In this example, each row consists of 3 columns equal to 3 bytes.
(COL 0, ROW Ystart) , (COL 1, ROW Ystart) , (COL 2, ROW Ystart)
(COL 0, ROW Ystart+1) , (COL 1, ROW Ystart+1) , (COL 2, Ystart+1)
(COL 0, ROW Ystart+Yheight), (COL 1, ROW Ystart+Yheight ), (COL 2, ROW
Ystart+Yheight)
012
0
4
ROW
COLUMN
Col 0 Col 1
MSB LSB MSB LSB
Col 2
MSB LSB
Row 1
=03H =FFH =80H