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Fix function definition set_rx_iq_balance so that Python can reach the
overloaded C++ function. There was a copy & paste error in there.
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This changes the Python version of MultiUSRP.get_tree() such that it
returns a raw pointer to the tree instead of returning the sptr.
This fixes an issue where calling get_tree() will reliably cause
a segfault during garbage collection, at least on some USRPs.
The downside of this approach is that storing the return value from
get_tree() can produce a dangling pointer when the underlying object is
destroyed. It's still better than segfaults, and the recommended way to
use get_tree() anyway is not to store the return value (unless it's in
a local scope), but tack on property tree methods to get_tree() itself.
Examples:
>>> usrp = uhd.usrp.MultiUSRP('...')
>>> usrp.get_tree().exists('/path/to/prop') # This is fine
This change has no noticable API changes.
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This function was incorrectly wrapped into Python and would fail with
Python saying it can't hold a reference to the radio block.
This changes the wrapping into returning a raw pointer, but also makes
the return value policy reference_internal so that garbage collection
happens in the right order.
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Example:
>>> usrp = uhd.usrp.multi_usrp("")
>>> tree = usrp.get_tree()
>>> print(tree.access_int("/name").get())
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This helps with recompilation times of UHD.
No functional changes.
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