diff options
| -rw-r--r-- | host/lib/usrp/dboard/db_sbx_common.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/host/lib/usrp/dboard/db_sbx_common.cpp b/host/lib/usrp/dboard/db_sbx_common.cpp index 585e4ba6b..b6eaedc3d 100644 --- a/host/lib/usrp/dboard/db_sbx_common.cpp +++ b/host/lib/usrp/dboard/db_sbx_common.cpp @@ -330,12 +330,14 @@ double sbx_xcvr::set_lo_freq(dboard_iface::unit_t unit, double target_freq) { sensor_value_t sbx_xcvr::get_locked(dboard_iface::unit_t unit) { const bool locked = (this->get_iface()->read_gpio(unit) & LOCKDET_MASK) != 0; + bool& lock_cache = (unit == dboard_iface::UNIT_RX) ? _rx_lo_lock_cache + : _tx_lo_lock_cache; - if (unit == dboard_iface::UNIT_RX) _rx_lo_lock_cache = locked; - if (unit == dboard_iface::UNIT_TX) _tx_lo_lock_cache = locked; - - //write the new lock cache setting to atr regs - update_atr(); + if (lock_cache != locked) { + lock_cache = locked; + // write the new lock cache setting to atr regs + update_atr(); + } return sensor_value_t("LO", locked, "locked", "unlocked"); } |