diff options
Diffstat (limited to 'host/lib/usrp/n230/n230_clk_pps_ctrl.cpp')
| -rw-r--r-- | host/lib/usrp/n230/n230_clk_pps_ctrl.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/host/lib/usrp/n230/n230_clk_pps_ctrl.cpp b/host/lib/usrp/n230/n230_clk_pps_ctrl.cpp new file mode 100644 index 000000000..a36fa133d --- /dev/null +++ b/host/lib/usrp/n230/n230_clk_pps_ctrl.cpp @@ -0,0 +1,158 @@ +// +// Copyright 2013-2014 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 +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + +#include "n230_clk_pps_ctrl.hpp" + +#include <uhd/utils/msg.hpp> +#include <uhd/utils/safe_call.hpp> +#include <boost/cstdint.hpp> +#include <boost/format.hpp> +#include <boost/foreach.hpp> +#include <stdexcept> +#include <cmath> +#include <cstdlib> + +namespace uhd { namespace usrp { namespace n230 { + +class n230_clk_pps_ctrl_impl : public n230_clk_pps_ctrl +{ +public: + n230_clk_pps_ctrl_impl( + ad9361_ctrl::sptr codec_ctrl, + n230_ref_pll_ctrl::sptr ref_pll_ctrl, + fpga::core_misc_reg_t& core_misc_reg, + fpga::core_pps_sel_reg_t& core_pps_sel, + fpga::core_radio_status_reg_t& core_status_reg, + const std::vector<time_core_3000::sptr>& time_cores + ): _codec_ctrl(codec_ctrl), + _ref_pll_ctrl(ref_pll_ctrl), + _core_misc_reg(core_misc_reg), + _core_pps_sel_reg(core_pps_sel), + _core_status_reg(core_status_reg), + _time_cores(time_cores), + _tick_rate(0.0), + _clock_source("<undefined>"), + _time_source("<undefined>") + { + } + + virtual ~n230_clk_pps_ctrl_impl() + { + } + + double set_tick_rate(const double rate) + { + UHD_MSG(status) << "Configuring a tick rate of " << rate/1e6 << " MHz... "; + _tick_rate = _codec_ctrl->set_clock_rate(rate); + UHD_MSG(status) << "got " << _tick_rate/1e6 << " MHz\n"; + + BOOST_FOREACH(time_core_3000::sptr& time_core, _time_cores) { + time_core->set_tick_rate(_tick_rate); + time_core->self_test(); + } + + return _tick_rate; + } + + double get_tick_rate() + { + return _tick_rate; + } + + void set_clock_source(const std::string &source) + { + if (_clock_source == source) return; + + if (source == "internal") { + _ref_pll_ctrl->set_lock_to_ext_ref(false); + } else if (source == "external" || source == "gpsdo") { + _ref_pll_ctrl->set_lock_to_ext_ref(true); + } else { + throw uhd::key_error("set_clock_source: unknown source: " + source); + } + _core_misc_reg.write(fpga::core_misc_reg_t::REF_SEL, (source == "gpsdo") ? 1 : 0); + + _clock_source = source; + } + + const std::string& get_clock_source() + { + return _clock_source; + } + + uhd::sensor_value_t get_ref_locked() + { + bool locked = false; + if (_clock_source == "external" || _clock_source == "gpsdo") { + locked = (_core_status_reg.read(fpga::core_radio_status_reg_t::REF_LOCKED) == 1); + } else { + //If the source is internal, the charge pump on the ADF4001 is tristated which + //means that the 40MHz VCTXXO is free running i.e. always "locked" + locked = true; + } + return sensor_value_t("Ref", locked, "locked", "unlocked"); + } + + void set_pps_source(const std::string &source) + { + if (_time_source == source) return; + + if (source == "none" or source == "gpsdo") { + _core_pps_sel_reg.write(fpga::core_pps_sel_reg_t::EXT_PPS_EN, 0); + } else if (source == "external") { + _core_pps_sel_reg.write(fpga::core_pps_sel_reg_t::EXT_PPS_EN, 1); + } else { + throw uhd::key_error("update_time_source: unknown source: " + source); + } + + _time_source = source; + } + + const std::string& get_pps_source() + { + return _time_source; + } + +private: + ad9361_ctrl::sptr _codec_ctrl; + n230_ref_pll_ctrl::sptr _ref_pll_ctrl; + fpga::core_misc_reg_t& _core_misc_reg; + fpga::core_pps_sel_reg_t& _core_pps_sel_reg; + fpga::core_radio_status_reg_t& _core_status_reg; + std::vector<time_core_3000::sptr> _time_cores; + double _tick_rate; + std::string _clock_source; + std::string _time_source; +}; + +}}} //namespace + +using namespace uhd::usrp::n230; +using namespace uhd::usrp; + +n230_clk_pps_ctrl::sptr n230_clk_pps_ctrl::make( + ad9361_ctrl::sptr codec_ctrl, + n230_ref_pll_ctrl::sptr ref_pll_ctrl, + fpga::core_misc_reg_t& core_misc_reg, + fpga::core_pps_sel_reg_t& core_pps_sel_reg, + fpga::core_radio_status_reg_t& core_status_reg, + const std::vector<time_core_3000::sptr>& time_cores) +{ + return sptr(new n230_clk_pps_ctrl_impl( + codec_ctrl, ref_pll_ctrl, core_misc_reg, core_pps_sel_reg, core_status_reg, time_cores)); +} + |