This adds two uORB API calls:
- orb_advertise_queue
- orb_advertise_multi_queue
Both add a queue_size parameter to define a maximum number of buffered
item. The existing orb calls use all a queue size of one and thus their
behavior is unchanged. If a writer publishes too fast, the oldest elements
from the queue are silently dropped.
The returned timestamp is always the one from the latest message in the
queue.
Queue size can be set via ioctl during advertisement phase. After that it
cannot be changed anymore.
This is necessary when using multiple instances of a topic. However it does
not free the underlying resources, as it is assumed they will be used again
at a later point.
This fixes the previously introduced unit test. It fixes the case where
orb_subscribe_multi is called multiple times with different instances,
and no publisher advertised the topic yet. In this case all subscribers
got the same instance 0.
before an advertiser for multi_pub/subs.
This is achieved using
- A "published" flag for each uORB device node
- A check before increasing the instance count (basically, a node is
re-used if nothing has been published on it before which means that it
has been created by a subscriber.
Nuttx complains about an unresolved _impure_ptr at link time.
This is a known issue when using STL templates in NuttX on ARM.
Created new ORBMap and ORBSet classes for NuttX.
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
This adds support for a dynamic build for QuRT and initial
Multi-uORB changes to enable communication between the DSP and
the application processor.
This part of the changes do not affect the POSIX build. This is
enablement for the QuRT build using Multi-uORB. The second part
of the changes will be added in a new module under src/modules.
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
uORB was refactored in order to support the MuORB changes required
for QURT. Those changes wil be added in a subsequent commit.
The files are split out by posix and nuttx so the changes are visible.
When this has been tested, the files can be re-merged and re-tested.
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
Beat Küng