aboutsummaryrefslogtreecommitdiffstats
path: root/host/lib/usrp2/clock_ctrl.cpp
diff options
context:
space:
mode:
authorJosh Blum <josh@joshknows.com>2011-06-29 14:00:22 -0700
committerJosh Blum <josh@joshknows.com>2011-06-29 14:00:22 -0700
commit11539ef6f690b4ebd69485be9a61f5422d8cdc99 (patch)
tree529cf29a314ac5b8b3dfaab94f98caca972cc462 /host/lib/usrp2/clock_ctrl.cpp
parentbc8aaf3952f1c192030d1c9a0b6ddcbe14d9c062 (diff)
downloaduhd-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.cpp377
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));
-}