diff options
Diffstat (limited to 'host/lib/usrp')
| -rw-r--r-- | host/lib/usrp/usrp2/clock_ctrl.cpp | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/host/lib/usrp/usrp2/clock_ctrl.cpp b/host/lib/usrp/usrp2/clock_ctrl.cpp index 02227afad..1e1c9b7b8 100644 --- a/host/lib/usrp/usrp2/clock_ctrl.cpp +++ b/host/lib/usrp/usrp2/clock_ctrl.cpp @@ -20,6 +20,7 @@ #include "usrp2_regs.hpp" //spi slave constants #include <uhd/utils/assert.hpp> #include <boost/cstdint.hpp> +#include <iostream> using namespace uhd; @@ -67,12 +68,60 @@ public: this->enable_dac_clock(true); this->enable_adc_clock(true); + /* always driving the mimo reference */ + this->enable_mimo_clock_out(true); } ~usrp2_clock_ctrl_impl(void){ - /* private clock enables, must be set here */ + //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); + } + + void enable_mimo_clock_out(bool enb){ + //FIXME TODO put this revision read in a common place + boost::uint8_t rev_hi = _iface->read_eeprom(USRP2_I2C_ADDR_MBOARD, USRP2_EE_MBOARD_REV_MSB, 1).at(0); + + //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(rev_hi){ + case 3: //clock 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_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; + this->write_reg(0x3e); + this->write_reg(0x4c); + break; + + case 4: //clock 5 + _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; + this->write_reg(0x41); + this->write_reg(0x52); + break; + + //TODO FIXME do i want to throw, what about uninitialized boards? + //default: throw std::runtime_error("unknown rev hi in mboard eeprom"); + default: std::cerr << "unknown rev hi: " << rev_hi << std::endl; + } + this->update_regs(); } //uses output clock 7 (cmos) |