diff options
Diffstat (limited to 'host/lib')
| -rw-r--r-- | host/lib/usrp/usrp2/usrp2_iface.cpp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/host/lib/usrp/usrp2/usrp2_iface.cpp b/host/lib/usrp/usrp2/usrp2_iface.cpp index a56d292c2..170447b6e 100644 --- a/host/lib/usrp/usrp2/usrp2_iface.cpp +++ b/host/lib/usrp/usrp2/usrp2_iface.cpp @@ -135,11 +135,15 @@ public: } bool is_device_locked(void){ - boost::uint32_t lock_secs = this->get_reg<boost::uint32_t, USRP2_REG_ACTION_FW_PEEK32>(U2_FW_REG_LOCK_TIME); + boost::uint32_t lock_time = this->get_reg<boost::uint32_t, USRP2_REG_ACTION_FW_PEEK32>(U2_FW_REG_LOCK_TIME); boost::uint32_t lock_gpid = this->get_reg<boost::uint32_t, USRP2_REG_ACTION_FW_PEEK32>(U2_FW_REG_LOCK_GPID); + //may not be the right tick rate, but this is ok for locking purposes + const boost::uint32_t lock_timeout_time = boost::uint32_t(3*100e6); + //if the difference is larger, assume not locked anymore - if (this->get_curr_secs() - lock_secs >= 3) return false; + const boost::uint32_t time_diff = this->get_curr_time() - lock_time; + if (time_diff >= lock_timeout_time) return false; //otherwise only lock if the device hash is different that ours return lock_gpid != boost::uint32_t(get_gpid()); @@ -147,14 +151,13 @@ public: void lock_task(void){ //re-lock in task - this->get_reg<boost::uint32_t, USRP2_REG_ACTION_FW_POKE32>(U2_FW_REG_LOCK_TIME, this->get_curr_secs()); + this->get_reg<boost::uint32_t, USRP2_REG_ACTION_FW_POKE32>(U2_FW_REG_LOCK_TIME, this->get_curr_time()); //sleep for a bit boost::this_thread::sleep(boost::posix_time::milliseconds(1500)); } - boost::uint32_t get_curr_secs(void){ - //may not be the right tick rate, but this is ok for locking purposes - return boost::uint32_t(this->peek32(U2_REG_TIME64_LO_RB_IMM)/100e6); + boost::uint32_t get_curr_time(void){ + return this->peek32(U2_REG_TIME64_LO_RB_IMM); } /*********************************************************************** |