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| author | Josh Blum <josh@joshknows.com> | 2012-08-08 12:48:40 -0700 |
|---|---|---|
| committer | Josh Blum <josh@joshknows.com> | 2012-08-08 12:48:40 -0700 |
| commit | 09de3c0768d2961ec3668882b4284e0db3b37eb8 (patch) | |
| tree | c1e1ce1f476cf3ac5f36708987b188612168d858 /host/lib/usrp/dboard/db_sbx_version4.cpp | |
| parent | d18fc6f0f1fe934cd8684171d966561a36fb134c (diff) | |
| download | uhd-09de3c0768d2961ec3668882b4284e0db3b37eb8.tar.gz uhd-09de3c0768d2961ec3668882b4284e0db3b37eb8.tar.bz2 uhd-09de3c0768d2961ec3668882b4284e0db3b37eb8.zip | |
sbx/wbx: clear R/N counters before tuning the LO
This helps consistent phase offset between mixers when a timed tune is performed.
Diffstat (limited to 'host/lib/usrp/dboard/db_sbx_version4.cpp')
| -rw-r--r-- | host/lib/usrp/dboard/db_sbx_version4.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
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; |