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author | Josh Blum <josh@joshknows.com> | 2011-06-29 14:00:22 -0700 |
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committer | Josh Blum <josh@joshknows.com> | 2011-06-29 14:00:22 -0700 |
commit | 11539ef6f690b4ebd69485be9a61f5422d8cdc99 (patch) | |
tree | 529cf29a314ac5b8b3dfaab94f98caca972cc462 /host/lib/usrp2/clock_ctrl.cpp | |
parent | bc8aaf3952f1c192030d1c9a0b6ddcbe14d9c062 (diff) | |
download | uhd-11539ef6f690b4ebd69485be9a61f5422d8cdc99.tar.gz uhd-11539ef6f690b4ebd69485be9a61f5422d8cdc99.tar.bz2 uhd-11539ef6f690b4ebd69485be9a61f5422d8cdc99.zip |
usrp2: moved impl back into usrp subdir
Diffstat (limited to 'host/lib/usrp2/clock_ctrl.cpp')
-rw-r--r-- | host/lib/usrp2/clock_ctrl.cpp | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/host/lib/usrp2/clock_ctrl.cpp b/host/lib/usrp2/clock_ctrl.cpp deleted file mode 100644 index 66c7a6c28..000000000 --- a/host/lib/usrp2/clock_ctrl.cpp +++ /dev/null @@ -1,377 +0,0 @@ -// -// Copyright 2010-2011 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 "clock_ctrl.hpp" -#include "ad9510_regs.hpp" -#include "usrp2_regs.hpp" //spi slave constants -#include "usrp2_clk_regs.hpp" -#include <uhd/utils/safe_call.hpp> -#include <uhd/utils/assert_has.hpp> -#include <boost/cstdint.hpp> -#include <boost/lexical_cast.hpp> -#include <boost/math/special_functions/round.hpp> -#include <iostream> - -using namespace uhd; - -static const bool enb_test_clk = false; - -/*! - * A usrp2 clock control specific to the ad9510 ic. - */ -class usrp2_clock_ctrl_impl : public usrp2_clock_ctrl{ -public: - usrp2_clock_ctrl_impl(usrp2_iface::sptr iface){ - _iface = iface; - clk_regs = usrp2_clk_regs_t(_iface->get_rev()); - - _ad9510_regs.cp_current_setting = ad9510_regs_t::CP_CURRENT_SETTING_3_0MA; - this->write_reg(clk_regs.pll_3); - - // Setup the clock registers to 100MHz: - // This was already done by the firmware (or the host couldnt communicate). - // We could remove this part, and just leave it to the firmware. - // But why not leave it in for those who want to mess with clock settings? - // 100mhz = 10mhz/R * (P*B + A) - - _ad9510_regs.pll_power_down = ad9510_regs_t::PLL_POWER_DOWN_NORMAL; - _ad9510_regs.prescaler_value = ad9510_regs_t::PRESCALER_VALUE_DIV2; - this->write_reg(clk_regs.pll_4); - - _ad9510_regs.acounter = 0; - this->write_reg(clk_regs.acounter); - - _ad9510_regs.bcounter_msb = 0; - _ad9510_regs.bcounter_lsb = 5; - this->write_reg(clk_regs.bcounter_msb); - this->write_reg(clk_regs.bcounter_lsb); - - _ad9510_regs.ref_counter_msb = 0; - _ad9510_regs.ref_counter_lsb = 1; // r divider = 1 - this->write_reg(clk_regs.ref_counter_msb); - this->write_reg(clk_regs.ref_counter_lsb); - - /* regs will be updated in commands below */ - - this->enable_external_ref(false); - this->enable_rx_dboard_clock(false); - this->enable_tx_dboard_clock(false); - this->enable_mimo_clock_out(false); - - /* private clock enables, must be set here */ - this->enable_dac_clock(true); - this->enable_adc_clock(true); - this->enable_test_clock(enb_test_clk); - } - - ~usrp2_clock_ctrl_impl(void){UHD_SAFE_CALL( - //power down clock outputs - this->enable_external_ref(false); - this->enable_rx_dboard_clock(false); - this->enable_tx_dboard_clock(false); - this->enable_dac_clock(false); - this->enable_adc_clock(false); - this->enable_mimo_clock_out(false); - this->enable_test_clock(false); - )} - - void enable_mimo_clock_out(bool enb){ - //calculate the low and high dividers - size_t divider = size_t(this->get_master_clock_rate()/10e6); - size_t high = divider/2; - size_t low = divider - high; - - switch(clk_regs.exp){ - case 2: //U2 rev 3 - _ad9510_regs.power_down_lvpecl_out2 = enb? - ad9510_regs_t::POWER_DOWN_LVPECL_OUT2_NORMAL : - ad9510_regs_t::POWER_DOWN_LVPECL_OUT2_SAFE_PD; - _ad9510_regs.output_level_lvpecl_out2 = ad9510_regs_t::OUTPUT_LEVEL_LVPECL_OUT2_810MV; - //set the registers (divider - 1) - _ad9510_regs.divider_low_cycles_out2 = low - 1; - _ad9510_regs.divider_high_cycles_out2 = high - 1; - _ad9510_regs.bypass_divider_out2 = 0; - break; - - case 5: //U2 rev 4 - _ad9510_regs.power_down_lvds_cmos_out5 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out5 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT5_LVDS; - _ad9510_regs.output_level_lvds_out5 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT5_1_75MA; - //set the registers (divider - 1) - _ad9510_regs.divider_low_cycles_out5 = low - 1; - _ad9510_regs.divider_high_cycles_out5 = high - 1; - _ad9510_regs.bypass_divider_out5 = 0; - break; - - case 6: //U2+ - _ad9510_regs.power_down_lvds_cmos_out6 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out6 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT6_LVDS; - _ad9510_regs.output_level_lvds_out6 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT6_1_75MA; - //set the registers (divider - 1) - _ad9510_regs.divider_low_cycles_out6 = low - 1; - _ad9510_regs.divider_high_cycles_out6 = high - 1; - _ad9510_regs.bypass_divider_out5 = 0; - break; - - default: - break; - } - this->write_reg(clk_regs.output(clk_regs.exp)); - this->write_reg(clk_regs.div_lo(clk_regs.exp)); - this->update_regs(); - } - - //uses output clock 7 (cmos) - void enable_rx_dboard_clock(bool enb){ - switch(_iface->get_rev()) { - case usrp2_iface::USRP_N200_R4: - case usrp2_iface::USRP_N210_R4: - _ad9510_regs.power_down_lvds_cmos_out7 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out7 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT7_LVDS; - _ad9510_regs.output_level_lvds_out7 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT7_1_75MA; - this->write_reg(clk_regs.output(clk_regs.rx_db)); - this->update_regs(); - break; - default: - _ad9510_regs.power_down_lvds_cmos_out7 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out7 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT7_CMOS; - _ad9510_regs.output_level_lvds_out7 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT7_1_75MA; - this->write_reg(clk_regs.output(clk_regs.rx_db)); - this->update_regs(); - break; - } - } - - void set_rate_rx_dboard_clock(double rate){ - assert_has(get_rates_rx_dboard_clock(), rate, "rx dboard clock rate"); - size_t divider = size_t(get_master_clock_rate()/rate); - //bypass when the divider ratio is one - _ad9510_regs.bypass_divider_out7 = (divider == 1)? 1 : 0; - //calculate the low and high dividers - size_t high = divider/2; - size_t low = divider - high; - //set the registers (divider - 1) - _ad9510_regs.divider_low_cycles_out7 = low - 1; - _ad9510_regs.divider_high_cycles_out7 = high - 1; - //write the registers - this->write_reg(clk_regs.div_lo(clk_regs.rx_db)); - this->write_reg(clk_regs.div_hi(clk_regs.rx_db)); - this->update_regs(); - } - - std::vector<double> get_rates_rx_dboard_clock(void){ - std::vector<double> rates; - for (size_t i = 1; i <= 16+16; i++) rates.push_back(get_master_clock_rate()/i); - return rates; - } - - //uses output clock 6 (cmos) on USRP2 and output clock 5 (cmos) on USRP2+ - void enable_tx_dboard_clock(bool enb){ - switch(clk_regs.tx_db) { - case 5: //USRP2+ - _ad9510_regs.power_down_lvds_cmos_out5 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out5 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT5_CMOS; - _ad9510_regs.output_level_lvds_out5 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT5_1_75MA; - break; - case 6: //USRP2 - _ad9510_regs.power_down_lvds_cmos_out6 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out6 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT6_CMOS; - _ad9510_regs.output_level_lvds_out6 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT6_1_75MA; - break; - } - - this->write_reg(clk_regs.output(clk_regs.tx_db)); - this->update_regs(); - } - - void set_rate_tx_dboard_clock(double rate){ - assert_has(get_rates_tx_dboard_clock(), rate, "tx dboard clock rate"); - size_t divider = size_t(get_master_clock_rate()/rate); - //bypass when the divider ratio is one - _ad9510_regs.bypass_divider_out6 = (divider == 1)? 1 : 0; - //calculate the low and high dividers - size_t high = divider/2; - size_t low = divider - high; - - switch(clk_regs.tx_db) { - case 5: //USRP2+ - _ad9510_regs.bypass_divider_out5 = (divider == 1)? 1 : 0; - _ad9510_regs.divider_low_cycles_out5 = low - 1; - _ad9510_regs.divider_high_cycles_out5 = high - 1; - break; - case 6: //USRP2 - //bypass when the divider ratio is one - _ad9510_regs.bypass_divider_out6 = (divider == 1)? 1 : 0; - //set the registers (divider - 1) - _ad9510_regs.divider_low_cycles_out6 = low - 1; - _ad9510_regs.divider_high_cycles_out6 = high - 1; - break; - } - - //write the registers - this->write_reg(clk_regs.div_hi(clk_regs.tx_db)); - this->write_reg(clk_regs.div_lo(clk_regs.tx_db)); - this->update_regs(); - } - - std::vector<double> get_rates_tx_dboard_clock(void){ - return get_rates_rx_dboard_clock(); //same master clock, same dividers... - } - - void enable_test_clock(bool enb) { - _ad9510_regs.power_down_lvpecl_out0 = enb? - ad9510_regs_t::POWER_DOWN_LVPECL_OUT0_NORMAL : - ad9510_regs_t::POWER_DOWN_LVPECL_OUT0_SAFE_PD; - _ad9510_regs.output_level_lvpecl_out0 = ad9510_regs_t::OUTPUT_LEVEL_LVPECL_OUT0_810MV; - _ad9510_regs.divider_low_cycles_out0 = 0; - _ad9510_regs.divider_high_cycles_out0 = 0; - _ad9510_regs.bypass_divider_out0 = 1; - this->write_reg(0x3c); - this->write_reg(0x48); - this->write_reg(0x49); - } - - /*! - * If we are to use an external reference, enable the charge pump. - * \param enb true to enable the CP - */ - void enable_external_ref(bool enb){ - _ad9510_regs.charge_pump_mode = (enb)? - ad9510_regs_t::CHARGE_PUMP_MODE_NORMAL : - ad9510_regs_t::CHARGE_PUMP_MODE_3STATE ; - _ad9510_regs.pll_mux_control = ad9510_regs_t::PLL_MUX_CONTROL_DLD_HIGH; - _ad9510_regs.pfd_polarity = ad9510_regs_t::PFD_POLARITY_POS; - this->write_reg(clk_regs.pll_2); - this->update_regs(); - } - - double get_master_clock_rate(void){ - return 100e6; - } - - void set_mimo_clock_delay(double delay) { - //delay_val is a 5-bit value (0-31) for fine control - //the equations below determine delay for a given ramp current, # of caps and fine delay register - //delay range: - //range_ns = 200*((caps+3)/i_ramp_ua)*1.3286 - //offset (zero delay): - //offset_ns = 0.34 + (1600 - i_ramp_ua)*1e-4 + ((caps-1)/ramp)*6 - //delay_ns = offset_ns + range_ns * delay / 31 - - int delay_val = boost::math::iround(delay/9.744e-9*31); - - if(delay_val == 0) { - switch(clk_regs.exp) { - case 5: - _ad9510_regs.delay_control_out5 = 1; - break; - case 6: - _ad9510_regs.delay_control_out6 = 1; - break; - default: - break; //delay not supported on U2 rev 3 - } - } else { - switch(clk_regs.exp) { - case 5: - _ad9510_regs.delay_control_out5 = 0; - _ad9510_regs.ramp_current_out5 = ad9510_regs_t::RAMP_CURRENT_OUT5_200UA; - _ad9510_regs.ramp_capacitor_out5 = ad9510_regs_t::RAMP_CAPACITOR_OUT5_4CAPS; - _ad9510_regs.delay_fine_adjust_out5 = delay_val; - this->write_reg(0x34); - this->write_reg(0x35); - this->write_reg(0x36); - break; - case 6: - _ad9510_regs.delay_control_out6 = 0; - _ad9510_regs.ramp_current_out6 = ad9510_regs_t::RAMP_CURRENT_OUT6_200UA; - _ad9510_regs.ramp_capacitor_out6 = ad9510_regs_t::RAMP_CAPACITOR_OUT6_4CAPS; - _ad9510_regs.delay_fine_adjust_out6 = delay_val; - this->write_reg(0x38); - this->write_reg(0x39); - this->write_reg(0x3A); - break; - default: - break; - } - } - } - -private: - /*! - * Write a single register to the spi regs. - * \param addr the address to write - */ - void write_reg(boost::uint8_t addr){ - boost::uint32_t data = _ad9510_regs.get_write_reg(addr); - _iface->write_spi(SPI_SS_AD9510, spi_config_t::EDGE_RISE, data, 24); - } - - /*! - * Tells the ad9510 to latch the settings into the operational registers. - */ - void update_regs(void){ - _ad9510_regs.update_registers = 1; - this->write_reg(clk_regs.update); - } - - //uses output clock 3 (pecl) - //this is the same between USRP2 and USRP2+ and doesn't get a switch statement - void enable_dac_clock(bool enb){ - _ad9510_regs.power_down_lvpecl_out3 = (enb)? - ad9510_regs_t::POWER_DOWN_LVPECL_OUT3_NORMAL : - ad9510_regs_t::POWER_DOWN_LVPECL_OUT3_SAFE_PD; - _ad9510_regs.output_level_lvpecl_out3 = ad9510_regs_t::OUTPUT_LEVEL_LVPECL_OUT3_810MV; - _ad9510_regs.bypass_divider_out3 = 1; - this->write_reg(clk_regs.output(clk_regs.dac)); - this->write_reg(clk_regs.div_hi(clk_regs.dac)); - this->update_regs(); - } - - //uses output clock 4 (lvds) on USRP2 and output clock 2 (lvpecl) on USRP2+ - void enable_adc_clock(bool enb){ - switch(clk_regs.adc) { - case 2: - _ad9510_regs.power_down_lvpecl_out2 = enb? ad9510_regs_t::POWER_DOWN_LVPECL_OUT2_NORMAL : ad9510_regs_t::POWER_DOWN_LVPECL_OUT2_SAFE_PD; - _ad9510_regs.output_level_lvpecl_out2 = ad9510_regs_t::OUTPUT_LEVEL_LVPECL_OUT2_500MV; - _ad9510_regs.bypass_divider_out2 = 1; - break; - case 4: - _ad9510_regs.power_down_lvds_cmos_out4 = enb? 0 : 1; - _ad9510_regs.lvds_cmos_select_out4 = ad9510_regs_t::LVDS_CMOS_SELECT_OUT4_LVDS; - _ad9510_regs.output_level_lvds_out4 = ad9510_regs_t::OUTPUT_LEVEL_LVDS_OUT4_1_75MA; - _ad9510_regs.bypass_divider_out4 = 1; - break; - } - - this->write_reg(clk_regs.output(clk_regs.adc)); - this->write_reg(clk_regs.div_hi(clk_regs.adc)); - this->update_regs(); - } - - usrp2_iface::sptr _iface; - - usrp2_clk_regs_t clk_regs; - ad9510_regs_t _ad9510_regs; -}; - -/*********************************************************************** - * Public make function for the ad9510 clock control - **********************************************************************/ -usrp2_clock_ctrl::sptr usrp2_clock_ctrl::make(usrp2_iface::sptr iface){ - return sptr(new usrp2_clock_ctrl_impl(iface)); -} |