Integration Guide

I2C Command Specifications
30 DE2011-DL
I
2
C Command Specifications
This section contains a complete description of the DE2011-DL possible I
2
C
supported commands in alphabetical order. For a summary list and more
information, see Command Format, starting on page 17
.
AIM TIME (0x4E)
Determines the lighting time of the aiming pattern during
each frame, starting from after the sensor exposure. A
longer period determines a brighter aim pattern.
Accepts values from 0x1 to 0xFF; each unit corresponds
to a 0.5 ms time increment.
If set to 0x0, sets the time to a default value, which can
be also determined by the user modifying the parameter
AIM DURATION (see Table 7 on page 24)
AIM TOGGLE (0x35)
With the value set to 0x01 the aim pattern will turn on
whenever the camera is acquiring images. Setting the
value to 0x00 will always turn it off.
The aim pattern will not be visible in the acquired images.
AUTO LOW POWER (0x44)
Activates system automatic power saving mode, turning
the system into low power mode after a timeout.
When the camera is continuously idle for a time,
previously determined using the SET AUTO POWER TIME
command, the system enters a power reduction state.
When an I
2
C command is issued the system wakes up and
executes the command.
BOOTLOADER START (0x41)
Stops executing the engine camera application and runs
the engine bootloader. Takes as input the following
signature code: 0xAA, 0x50, 0x5.
CAMERA MODE (0x3B)
Sets up the engine system and the image sensor for
better performance of a specific task: Barcode Decoding,
Image Capture, Motion Detection, Fast High Bin or LCD
screen Read modifying sensor internal register values,
LED illumination and aiming pattern on/off timing.
This command modifies only some key engine and sensor
parameters, leaving others unchanged. The parameters
changed by this command are:
Whichever value is set, for each frame the aim on time might be
automatically trimmed in order to be off during the sensor expo-
sure.