sbx/wbx: clear R/N counters before tuning the LO

This helps consistent phase offset between mixers when a timed tune is performed.

7 files changed, 26 insertions, 3 deletions

diff --git a/host/lib/usrp/dboard/db_sbx_common.cpp b/host/lib/usrp/dboard/db_sbx_common.cpp
index a51dee361..728cb17e9 100644
--- a/host/lib/usrp/dboard/db_sbx_common.cpp
+++ b/host/lib/usrp/dboard/db_sbx_common.cpp
@@ -16,7 +16,6 @@
 //
 
 #include "db_sbx_common.hpp"
-#include "adf4350_regs.hpp"
 
 using namespace uhd;
 using namespace uhd::usrp;
diff --git a/host/lib/usrp/dboard/db_sbx_version3.cpp b/host/lib/usrp/dboard/db_sbx_version3.cpp
index 040bef12f..2765d530c 100644
--- a/host/lib/usrp/dboard/db_sbx_version3.cpp
+++ b/host/lib/usrp/dboard/db_sbx_version3.cpp
@@ -165,6 +165,11 @@ double sbx_xcvr::sbx_version3::set_lo_freq(dboard_iface::unit_t unit, double tar
     UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
     regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
 
+    //reset the N and R counter
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_ENABLED;
+    self_base->get_iface()->write_spi(unit, spi_config_t::EDGE_RISE, regs.get_reg(2), 32);
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_DISABLED;
+
     //write the registers
     //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
     int addr;
diff --git a/host/lib/usrp/dboard/db_sbx_version4.cpp b/host/lib/usrp/dboard/db_sbx_version4.cpp
index f091caab7..27fd68b05 100644
--- a/host/lib/usrp/dboard/db_sbx_version4.cpp
+++ b/host/lib/usrp/dboard/db_sbx_version4.cpp
@@ -168,6 +168,11 @@ double sbx_xcvr::sbx_version4::set_lo_freq(dboard_iface::unit_t unit, double tar
     UHD_ASSERT_THROW(rfdivsel_to_enum.has_key(RFdiv));
     regs.rf_divider_select = rfdivsel_to_enum[RFdiv];
 
+    //reset the N and R counter
+    regs.counter_reset = adf4351_regs_t::COUNTER_RESET_ENABLED;
+    self_base->get_iface()->write_spi(unit, spi_config_t::EDGE_RISE, regs.get_reg(2), 32);
+    regs.counter_reset = adf4351_regs_t::COUNTER_RESET_DISABLED;
+
     //write the registers
     //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
     int addr;
diff --git a/host/lib/usrp/dboard/db_wbx_common.cpp b/host/lib/usrp/dboard/db_wbx_common.cpp
index 58ce03d79..503e5aabf 100644
--- a/host/lib/usrp/dboard/db_wbx_common.cpp
+++ b/host/lib/usrp/dboard/db_wbx_common.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright 2011 Ettus Research LLC
+// Copyright 2011-2012 Ettus Research LLC
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -16,7 +16,6 @@
 //
 
 #include "db_wbx_common.hpp"
-#include "adf4350_regs.hpp"
 #include <uhd/types/dict.hpp>
 #include <uhd/types/ranges.hpp>
 #include <uhd/types/sensors.hpp>
diff --git a/host/lib/usrp/dboard/db_wbx_version2.cpp b/host/lib/usrp/dboard/db_wbx_version2.cpp
index 643fcd37f..5f6118a91 100644
--- a/host/lib/usrp/dboard/db_wbx_version2.cpp
+++ b/host/lib/usrp/dboard/db_wbx_version2.cpp
@@ -316,6 +316,11 @@ double wbx_base::wbx_version2::set_lo_freq(dboard_iface::unit_t unit, double tar
 
     }
 
+    //reset the N and R counter
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_ENABLED;
+    self_base->get_iface()->write_spi(unit, spi_config_t::EDGE_RISE, regs.get_reg(2), 32);
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_DISABLED;
+
     //write the registers
     //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
     int addr;
diff --git a/host/lib/usrp/dboard/db_wbx_version3.cpp b/host/lib/usrp/dboard/db_wbx_version3.cpp
index 6771d184f..3e8fc8095 100644
--- a/host/lib/usrp/dboard/db_wbx_version3.cpp
+++ b/host/lib/usrp/dboard/db_wbx_version3.cpp
@@ -348,6 +348,11 @@ double wbx_base::wbx_version3::set_lo_freq(dboard_iface::unit_t unit, double tar
 
     }
 
+    //reset the N and R counter
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_ENABLED;
+    self_base->get_iface()->write_spi(unit, spi_config_t::EDGE_RISE, regs.get_reg(2), 32);
+    regs.counter_reset = adf4350_regs_t::COUNTER_RESET_DISABLED;
+
     //write the registers
     //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
     int addr;
diff --git a/host/lib/usrp/dboard/db_wbx_version4.cpp b/host/lib/usrp/dboard/db_wbx_version4.cpp
index 057cdb6ce..58a5e5f3e 100644
--- a/host/lib/usrp/dboard/db_wbx_version4.cpp
+++ b/host/lib/usrp/dboard/db_wbx_version4.cpp
@@ -331,6 +331,11 @@ double wbx_base::wbx_version4::set_lo_freq(dboard_iface::unit_t unit, double tar
 
     }
 
+    //reset the N and R counter
+    regs.counter_reset = adf4351_regs_t::COUNTER_RESET_ENABLED;
+    self_base->get_iface()->write_spi(unit, spi_config_t::EDGE_RISE, regs.get_reg(2), 32);
+    regs.counter_reset = adf4351_regs_t::COUNTER_RESET_DISABLED;
+
     //write the registers
     //correct power-up sequence to write registers (5, 4, 3, 2, 1, 0)
     int addr;