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authorJosh Blum <josh@joshknows.com>2011-05-01 15:42:32 -0700
committerJosh Blum <josh@joshknows.com>2011-05-01 15:42:32 -0700
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parent11e856ebca352af1b0444aec6d57ea61c0b48037 (diff)
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usrp2: added the concept of device locking to usrp2/nseries devices
Each iface instance can lock itself to a particular device. When the device is locked, it cannot be discovered through find. Locking works by having a lock thread periodically update a register in the firmware that says when the device was last locked. The find routine can determine if a device is locked by checking the difference between the current time and this register.
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