Pike
Technical
Manual
V5.2.3
302
Configuration of the camera
Configuration
of
the
camera
Reading or writing shading image from/into the camera
Accessing
the
shading
image
inside
the
camera
is
done
through
the
GPDATA_BUFFER.
Because
the
size
of
the
GPDATA_BUFFER
is
smaller
than
a
whole
shading
image
the
data
must
be
written
in
multiple
steps.
To
read
or
write
a
shading
image:
1.
Query
the
limits
and
ranges
by
reading
SHDG_INFO
and
GPDATA_INFO.
2.
Set
EnableMemWR
or
EnableMemRD
to
true
(1).
3.
Set
AddrOffset
to
0.
4.
Write
n
shading
data
bytes
to
GPDATA_BUFFER
(n
might
be
lower
than
the
size
of
the
GPDATA_BUFFER;
AddrOffset
is
automatically
adjusted
inside
the
camera).
5.
Repeat
step
4
until
all
data
is
written
into
the
camera.
6.
Set
EnableMemWR
and
EnableMemRD
to
false.
Automatic generation of a shading image
Shading
image
data
may
also
be
generated
by
the
camera.
To
use
this
feature
make
sure
all
settings
affecting
an
image
are
set
properly.
The
camera
uses
the
current
active
resolution
to
generate
the
shading
image.
To
generate
a
shading
image:
1.
Set
GrabCount
to
the
number
of
the
images
to
be
averaged
before
the
correction
factors
are
calculated.
2.
Set
BuildImage
to
true.
0xF1000254
SHDG_MEM_CTRL Presence_Inq
[0]
Indicates
presence
of
this
feature
(read
only)
---
[1
to
4]
Reserved
EnableMemWR
[5]
Enable
write
access
EnableMemRD
[6]
Enable
read
access
---
[7]
Reserved
AddrOffset
[8
to
31] In
bytes
0xF1000258
SHDG_INFO
Presence_Inq
[0]
Indicates
presence
of
this
feature
(read
only)
---
[1
to
3]
Reserved
MaxMemChannel
[4
to
7]
Maximum
number
of
available
memory
channels
to
store
shading
images
MaxImageSize
[8
to
31] Maximum
shading
image
size
(in
bytes)
Register
Name
Field
Bit
Description
Table 164: Advanced register: Shading (continued)
