transceiver: uhd: make external reference a compile time option
External reference selection was already compile-time determined by a hard coded value. Make it selectable as a configure option. Signed-off-by: Thomas Tsou <ttsou@vt.edu>
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@ -32,8 +32,6 @@
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#endif
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/*
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use_ext_ref - Enable external 10MHz clock reference
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master_clk_rt - Master clock frequency - ignored if host resampling is
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enabled
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@ -46,7 +44,6 @@
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tx_ampl - Transmit amplitude must be between 0 and 1.0
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*/
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const bool use_ext_ref = false;
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const double master_clk_rt = 52e6;
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const size_t smpl_buf_sz = (1 << 20);
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const float tx_ampl = .3;
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@ -426,6 +423,10 @@ bool uhd_device::open()
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return false;
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}
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#ifdef EXTREF
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set_ref_clk(true);
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#endif
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// Number of samples per over-the-wire packet
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tx_spp = usrp_dev->get_device()->get_max_send_samps_per_packet();
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rx_spp = usrp_dev->get_device()->get_max_recv_samps_per_packet();
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@ -445,9 +446,6 @@ bool uhd_device::open()
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// Initialize and shadow gain values
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init_gains();
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// Set reference clock
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set_ref_clk(use_ext_ref);
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// Print configuration
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LOG(INFO) << "\n" << usrp_dev->get_pp_string();
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@ -67,6 +67,11 @@ AC_ARG_WITH(resamp, [
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[enable resampling for non-52MHz devices])
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])
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AC_ARG_WITH(extref, [
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AS_HELP_STRING([--with-extref],
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[enable external reference on UHD devices])
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])
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AS_IF([test "x$with_usrp1" = "xyes"], [
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# Defines USRP_CFLAGS, USRP_INCLUDEDIR, and USRP_LIBS
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PKG_CHECK_MODULES(USRP, usrp > 3.1)
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@ -89,6 +94,10 @@ AS_IF([test "x$with_resamp" = "xyes"], [
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AC_DEFINE(RESAMPLE, 1, Define to 1 for resampling)
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])
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AS_IF([test "x$with_extref" = "xyes"], [
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AC_DEFINE(EXTREF, 1, Define to 1 for external reference)
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])
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AM_CONDITIONAL(RESAMPLE, [test "x$with_resamp" = "xyes"])
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AM_CONDITIONAL(UHD, [test "x$with_usrp1" != "xyes"])
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