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-rw-r--r--host/lib/usrp/b200/b200_impl.cpp5
-rw-r--r--host/lib/usrp/multi_usrp.cpp10
-rw-r--r--host/lib/usrp/usrp2/usrp2_impl.cpp5
-rw-r--r--host/lib/usrp/x300/x300_clock_ctrl.cpp11
-rw-r--r--host/lib/usrp/x300/x300_impl.cpp67
5 files changed, 42 insertions, 56 deletions
diff --git a/host/lib/usrp/b200/b200_impl.cpp b/host/lib/usrp/b200/b200_impl.cpp
index f88d787ca..bf5fdd251 100644
--- a/host/lib/usrp/b200/b200_impl.cpp
+++ b/host/lib/usrp/b200/b200_impl.cpp
@@ -473,11 +473,6 @@ b200_impl::b200_impl(const device_addr_t &device_addr)
UHD_MSG(status) << "Initializing time to the internal GPSDO" << std::endl;
const time_t tp = time_t(_gps->get_sensor("gps_time").to_int()+1);
_tree->access<time_spec_t>(mb_path / "time" / "pps").set(time_spec_t(tp));
-
- //wait for next PPS edge (timeout after 1 second)
- time_spec_t pps_time = _tree->access<time_spec_t>(mb_path / "time" / "pps").get();
- for (size_t i = 0; i < 10 && _tree->access<time_spec_t>(mb_path / "time" / "pps").get() == pps_time; i++)
- boost::this_thread::sleep(boost::posix_time::milliseconds(100));
} else {
//init to internal clock and time source
_tree->access<std::string>(mb_path / "clock_source/value").set("internal");
diff --git a/host/lib/usrp/multi_usrp.cpp b/host/lib/usrp/multi_usrp.cpp
index 71b1f8995..c13d3efba 100644
--- a/host/lib/usrp/multi_usrp.cpp
+++ b/host/lib/usrp/multi_usrp.cpp
@@ -394,17 +394,19 @@ public:
void set_time_unknown_pps(const time_spec_t &time_spec){
UHD_MSG(status) << " 1) catch time transition at pps edge" << std::endl;
- time_spec_t time_start = get_time_now();
+ boost::system_time end_time = boost::get_system_time() + boost::posix_time::milliseconds(1100);
time_spec_t time_start_last_pps = get_time_last_pps();
- while(true){
- if (get_time_last_pps() != time_start_last_pps) break;
- if ((get_time_now() - time_start) > time_spec_t(1.1)){
+ while (time_start_last_pps == get_time_last_pps())
+ {
+ if (boost::get_system_time() > end_time)
+ {
throw uhd::runtime_error(
"Board 0 may not be getting a PPS signal!\n"
"No PPS detected within the time interval.\n"
"See the application notes for your device.\n"
);
}
+ boost::this_thread::sleep(boost::posix_time::milliseconds(1));
}
UHD_MSG(status) << " 2) set times next pps (synchronously)" << std::endl;
diff --git a/host/lib/usrp/usrp2/usrp2_impl.cpp b/host/lib/usrp/usrp2/usrp2_impl.cpp
index 7c478d8e1..d96a8ab7d 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.cpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.cpp
@@ -763,11 +763,6 @@ usrp2_impl::usrp2_impl(const device_addr_t &_device_addr){
UHD_MSG(status) << "Initializing time to the internal GPSDO" << std::endl;
const time_t tp = time_t(_mbc[mb].gps->get_sensor("gps_time").to_int()+1);
_tree->access<time_spec_t>(root / "time" / "pps").set(time_spec_t(tp));
-
- //wait for next PPS edge (timeout after 1 second)
- time_spec_t pps_time = _tree->access<time_spec_t>(root / "time" / "pps").get();
- for (size_t i = 0; i < 10 && _tree->access<time_spec_t>(root / "time" / "pps").get() == pps_time; i++)
- boost::this_thread::sleep(boost::posix_time::milliseconds(100));
}
}
diff --git a/host/lib/usrp/x300/x300_clock_ctrl.cpp b/host/lib/usrp/x300/x300_clock_ctrl.cpp
index a8b30a0ab..daae5df9b 100644
--- a/host/lib/usrp/x300/x300_clock_ctrl.cpp
+++ b/host/lib/usrp/x300/x300_clock_ctrl.cpp
@@ -283,6 +283,7 @@ void set_master_clock_rate(double clock_rate) {
_lmk04816_regs.CLKout0_1_PD = lmk04816_regs_t::CLKOUT0_1_PD_POWER_UP;
this->write_regs(0);
_lmk04816_regs.CLKout0_1_DIV = vco_div;
+ _lmk04816_regs.CLKout0_ADLY_SEL = lmk04816_regs_t::CLKOUT0_ADLY_SEL_D_EV_X;
this->write_regs(0);
// Register 1
@@ -294,6 +295,8 @@ void set_master_clock_rate(double clock_rate) {
// Register 3
_lmk04816_regs.CLKout6_7_DIV = vco_div;
_lmk04816_regs.CLKout6_7_OSCin_Sel = lmk04816_regs_t::CLKOUT6_7_OSCIN_SEL_VCO;
+ _lmk04816_regs.CLKout6_ADLY_SEL = lmk04816_regs_t::CLKOUT6_ADLY_SEL_D_EV_X;
+ _lmk04816_regs.CLKout7_ADLY_SEL = lmk04816_regs_t::CLKOUT7_ADLY_SEL_D_EV_X;
// Register 4
_lmk04816_regs.CLKout8_9_DIV = vco_div;
// Register 5
@@ -305,12 +308,20 @@ void set_master_clock_rate(double clock_rate) {
_lmk04816_regs.CLKout1_TYPE = lmk04816_regs_t::CLKOUT1_TYPE_P_DOWN; //CPRI feedback clock, use LVDS
_lmk04816_regs.CLKout2_TYPE = lmk04816_regs_t::CLKOUT2_TYPE_LVPECL_700MVPP; //DB_0_RX
_lmk04816_regs.CLKout3_TYPE = lmk04816_regs_t::CLKOUT3_TYPE_LVPECL_700MVPP; //DB_1_RX
+ // Analog delay of 1075ps (maximum) to synchronize the radio clock with the source synchronous ADC clocks.
+ // This delay may need to vary due to temperature. Tested and verified at room temperature only.
+ _lmk04816_regs.CLKout0_1_ADLY = 0x17;
+
// Register 7
_lmk04816_regs.CLKout4_TYPE = lmk04816_regs_t::CLKOUT4_TYPE_LVPECL_700MVPP; //DB_1_TX
_lmk04816_regs.CLKout5_TYPE = lmk04816_regs_t::CLKOUT5_TYPE_LVPECL_700MVPP; //DB_0_TX
_lmk04816_regs.CLKout6_TYPE = lmk04816_regs_t::CLKOUT6_TYPE_LVPECL_700MVPP; //DB0_DAC
_lmk04816_regs.CLKout7_TYPE = lmk04816_regs_t::CLKOUT7_TYPE_LVPECL_700MVPP; //DB1_DAC
_lmk04816_regs.CLKout8_TYPE = lmk04816_regs_t::CLKOUT8_TYPE_LVPECL_700MVPP; //DB0_ADC
+ // Analog delay of 1075ps (maximum) to synchronize the DAC reference clocks with the source synchronous DAC clocks.
+ // This delay may need to vary due to temperature. Tested and verified at room temperature only.
+ _lmk04816_regs.CLKout6_7_ADLY = 0x17;
+
// Register 8
_lmk04816_regs.CLKout9_TYPE = lmk04816_regs_t::CLKOUT9_TYPE_LVPECL_700MVPP; //DB1_ADC
_lmk04816_regs.CLKout10_TYPE = lmk04816_regs_t::CLKOUT10_TYPE_LVDS; //REF_CLKOUT
diff --git a/host/lib/usrp/x300/x300_impl.cpp b/host/lib/usrp/x300/x300_impl.cpp
index 3561bc2f1..1b651065d 100644
--- a/host/lib/usrp/x300/x300_impl.cpp
+++ b/host/lib/usrp/x300/x300_impl.cpp
@@ -809,45 +809,32 @@ void x300_impl::setup_mb(const size_t mb_i, const uhd::device_addr_t &dev_addr)
_tree->access<subdev_spec_t>(mb_path / "tx_subdev_spec").set(tx_fe_spec);
UHD_MSG(status) << "Initializing clock and PPS references..." << std::endl;
- try {
- //First, try external source
- _tree->access<std::string>(mb_path / "clock_source" / "value").set("external");
- wait_for_ref_locked(mb.zpu_ctrl, 1.0);
- _tree->access<std::string>(mb_path / "time_source" / "value").set("external");
- UHD_MSG(status) << "References initialized to external sources" << std::endl;
- } catch (uhd::exception::runtime_error &e) {
- //No external source detected - set to the GPSDO if installed
- if (mb.gps and mb.gps->gps_detected())
- {
- _tree->access<std::string>(mb_path / "clock_source" / "value").set("gpsdo");
- try {
- wait_for_ref_locked(mb.zpu_ctrl, 1.0);
- } catch (uhd::exception::runtime_error &e) {
- UHD_MSG(warning) << "Clock reference failed to lock to GPSDO during device initialization. " <<
- "Check for the lock before operation or ignore this warning if using another clock source." << std::endl;
- }
- _tree->access<std::string>(mb_path / "time_source" / "value").set("gpsdo");
- UHD_MSG(status) << "References initialized to GPSDO sources" << std::endl;
- UHD_MSG(status) << "Initializing time to the GPSDO time" << std::endl;
- const time_t tp = time_t(mb.gps->get_sensor("gps_time").to_int()+1);
- _tree->access<time_spec_t>(mb_path / "time" / "pps").set(time_spec_t(tp));
-
- //wait for next PPS edge (timeout after 1 second)
- time_spec_t pps_time = _tree->access<time_spec_t>(mb_path / "time" / "pps").get();
- for (size_t i = 0; i < 10 && _tree->access<time_spec_t>(mb_path / "time" / "pps").get() == pps_time; i++)
- boost::this_thread::sleep(boost::posix_time::milliseconds(100));
- } else {
- _tree->access<std::string>(mb_path / "clock_source" / "value").set("internal");
- try {
- wait_for_ref_locked(mb.zpu_ctrl, 1.0);
- } catch (uhd::exception::runtime_error &e) {
- // Ignore for now - It can sometimes take longer than 1 second to lock and that is OK.
- //UHD_MSG(warning) << "Clock reference failed to lock to internal source during device initialization. " <<
- // "Check for the lock before operation or ignore this warning if using another clock source." << std::endl;
- }
- _tree->access<std::string>(mb_path / "time_source" / "value").set("internal");
- UHD_MSG(status) << "References initialized to internal sources" << std::endl;
+ //Set to the GPSDO if installed
+ if (mb.gps and mb.gps->gps_detected())
+ {
+ _tree->access<std::string>(mb_path / "clock_source" / "value").set("gpsdo");
+ try {
+ wait_for_ref_locked(mb.zpu_ctrl, 1.0);
+ } catch (uhd::exception::runtime_error &e) {
+ UHD_MSG(warning) << "Clock reference failed to lock to GPSDO during device initialization. " <<
+ "Check for the lock before operation or ignore this warning if using another clock source." << std::endl;
+ }
+ _tree->access<std::string>(mb_path / "time_source" / "value").set("gpsdo");
+ UHD_MSG(status) << "References initialized to GPSDO sources" << std::endl;
+ UHD_MSG(status) << "Initializing time to the GPSDO time" << std::endl;
+ const time_t tp = time_t(mb.gps->get_sensor("gps_time").to_int()+1);
+ _tree->access<time_spec_t>(mb_path / "time" / "pps").set(time_spec_t(tp));
+ } else {
+ _tree->access<std::string>(mb_path / "clock_source" / "value").set("internal");
+ try {
+ wait_for_ref_locked(mb.zpu_ctrl, 1.0);
+ } catch (uhd::exception::runtime_error &e) {
+ // Ignore for now - It can sometimes take longer than 1 second to lock and that is OK.
+ //UHD_MSG(warning) << "Clock reference failed to lock to internal source during device initialization. " <<
+ // "Check for the lock before operation or ignore this warning if using another clock source." << std::endl;
}
+ _tree->access<std::string>(mb_path / "time_source" / "value").set("internal");
+ UHD_MSG(status) << "References initialized to internal sources" << std::endl;
}
}
@@ -1395,10 +1382,6 @@ void x300_impl::update_clock_source(mboard_members_t &mb, const std::string &sou
this->update_clock_control(mb);
- //reset the clock control
- //without this, the lock time is long and can be as much as 30 seconds
- mb.clock->reset_clocks();
-
/* FIXME: implement when we know the correct timeouts
* //wait for lock
* double timeout = 1.0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 18:45:46 +0000