diff options
Diffstat (limited to 'host/lib/usrp/b200/b200_impl.cpp')
| -rw-r--r-- | host/lib/usrp/b200/b200_impl.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/host/lib/usrp/b200/b200_impl.cpp b/host/lib/usrp/b200/b200_impl.cpp index 33f0850eb..9bd2799c2 100644 --- a/host/lib/usrp/b200/b200_impl.cpp +++ b/host/lib/usrp/b200/b200_impl.cpp @@ -1041,8 +1041,11 @@ void b200_impl::update_clock_source(const std::string &source) } _adf4001_iface->set_lock_to_ext_ref(true); } - else if (_gps and source == "gpsdo") + else if (source == "gpsdo") { + if (not _gps or not _gps->gps_detected()) { + throw uhd::key_error("update_clock_source: gpsdo selected, but no gpsdo detected!"); + } if (_gpio_state.ref_sel != 1) { _gpio_state.ref_sel = 1; |