Camera Serial Commands | NOCTURN XL Camera | 33
Command
Optional Payload
Description
tf
n ax ay bx by cx cy p
Draws a filled triangle n with vertices at screen
coordinate (ax, ay), (bx, by) and (cx, cy) and effects
p
t
n ax ay bx by cx cy t p
Draws a triangle n with vertices at screen
coordinate (ax, ay), (bx, by) and (cx, cy), thickness
t and effects p
tp
Sets test pattern mode- function used for
troubleshooting display operation
txt
x y f b s ttt
Displays text ttt at the x y coordinate (top left
corner) with foreground color f, background
color b and size s
vidintensity
xxx
Sets the overlay draw intensity to xxx (0-255)
vidinvert
0
1
Sets the video polarity on the screen to non-
inverted
Sets the video polarity on the screen to inverted
The overlay effects that can be setup in the on screen display by adjusting the variable p found in several
of the commands in Table 18. The variable p is an 8-bit [7:0] value where:
•
Bit [7:4]: overlay intensity bits (0xF0 will be changed to 0xFFF in hardware when overlay is
enabled)
•
Bit [3:0]: effects bits
o
[1:0]: transparency multiplier
Value 0- overlay 75% transparent
Value 1- overlay 50% transparent
Value 2- overlay 25% transparent
Value 3- overlay is opaque
o
[2]: XOR enable- XOR’s MSB of video data with 1 to provide 50% contrast between the
overlay and the video data
o
[3]: blink enable
AGC Commands
A list of valid AGC functions and current value can be queried from the camera by sending the following
command:
AGC status <CR><LF>
All valid serial command shown in Table 19 should be sent as:
AGC <Command> <Optional Payload><CR><LF>
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