Controlling image capture
PIKE Technical Manual
V5.0.0
203
Multi-shot
Setting
multi-shot
and entering a quantity of images in
Count_Number
in
the 61Ch register enables the camera to record a specified number of images.
The number is indicated in bits 16 to 31. If the camera is put into
ISO_Enable
mode (see Chapter
on page 203), this flag
is ignored and deleted automatically once all the images have been recorded.
If
multi-shot
mode is activated and the images have not yet all been cap-
tured, it can be cancelled by resetting the flag. The same result can be
achieved by setting the number of images to
0
.
Multi-shot
can also be combined with the external trigger in order to grab a
certain number of images based on an external trigger. This is especially
helpful in combination with the so called
Deferred_Mode
to limit the num-
ber of grabbed images to the FIFO size.
ISO_Enable / free-run
Setting the MSB (bit 0) in the 614h register (ISO_ENA) puts the camera into
ISO_Enable mode
or
Continuous_Shot (free-run)
. The camera captures an
infinite series of images. This operation can be quit by deleting the
0
bit.
Asynchronous broadcast
The camera accepts asynchronous broadcasts. This involves asynchronous
write requests that use node number 63 as the target node with no acknowl-
edge.
This makes it possible for all cameras on a bus to be triggered by software
simultaneously - e.g. by broadcasting a
one-shot
. All cameras receive the
one-shot
command in the same IEEE 1394 bus cycle. This creates uncertainty
for all cameras in the range of 125 µs.
Inter-camera latency is described in Chapter
