Matrix Orbital GLK19264-7T-1U - Manual (Page 24)

Examples
Crystal Speed 16 Mhz
Desired BAUD 13,500
speed =
crystalspeed
8 ∗ DesiredBaud
−1
speed = 148
.
15 − 1
speed =
16
,
000
,
000
8 ∗ 13
,
500
− 1
speed = 147
.
15
• LSB = 0x93 (rounded)
• MSB = 0x00
• Intended Baud Rate: 13,500 baud
Actual Baud Rate:
16
,
000
,
000
8 (147+1)
=13,514 Percent Difference: 0.1%
NOTES
• Results from the formula are rounded down to the nearest whole number (i.e 73.07
= 73).
• This formula becomes less acurate as baud rates increase, due to rounding.
• Place the speed result backwards into the formula to receive the actual baud rate.
(Baud =
CrystalSpeed
8 (speed+1)
)
• The actual baud rate must be within 3% of the intended baud rate for the device to
communicate.
5 Fonts
5.1 Introduction
The GLK19264-7T-1U comes loaded with the ’Small Filled’ and ’Futura Bk BT 16’ fonts by default.
However, it is capable of displaying any font that is uploaded to it in the correct format. MOGD# provides a
simple method of generating font files from your installed fonts. For instructions on how to install MOGD#
see Section 1.5.1 on page 5.
5.1.1 Font File Format
A font file consists of three parts, a header, a character table and bitmap data.
1. Header (4 bytes)
(a) Nominal Width (1 byte)
Matrix Orbital GLK19264-7T-1U 19