8 miscellaneous commands – Matrix Orbital LK204-24-USB User Manual
Page 42

Command
Syntax
Default
Notes
Remember GPO / PWM
state
FE C2
254 195
n/a
This
command
will set the start
up state for all the
GPOs.
Set PWM base frequency
(New in Firmware Revi-
sion 1.1)
FE C4 [index]
254 196 [index]
6
This
command
sets
the
base
frequency for the
PWM
modula-
tion.
Remember PWM base fre-
quency
(New in Firmware Revi-
sion 1.1)
FE C5 [index]
254 197 [index]
6
This
command
will set the PWM
frequency
for
startup.
8.8 Miscellaneous Commands
NOTE The letter “R” in the default column indicates that this state can be saved to non-
volatile memory with the “Remember” command.
Table 34: Miscellaneous Commands
Command
Syntax
Default
Notes
Remember
FE 93 [0|1]
254 147
off
Turns the “re-
member”
func-
tion on [1] or off
[0].
Clear display
FE 58
254 88
254 “X”
n/a
Clears screen of
text and graphics,
places text cursor
at top left.
Set contrast
FE 50 [contrast]
254 80 [contrast]
254 “P” [contrast]
0x80
128
Sets display con-
trast.
Compen-
sates for viewing
angle.
Contrast
is a value between
0 and 255 (hex 0
to FF). Larger =
darker.
Matrix Orbital
LK204-24-USB
38