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authorJosh Blum <josh@joshknows.com>2012-01-16 18:07:09 -0800
committerJosh Blum <josh@joshknows.com>2012-03-14 00:02:44 -0700
commit8a33423ad6877fdb2bc1bc50c6506cff4ce9c5aa (patch)
treec0aef50afc507333f80fe31e000fa6f3f980a4d3 /host/lib/usrp/common
parentabab58f5404fcd769bf72fd0f486323659e9c087 (diff)
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uhd: rev iq correction numbers format
Diffstat (limited to 'host/lib/usrp/common')
-rw-r--r--host/lib/usrp/common/apply_corrections.cpp49
1 files changed, 6 insertions, 43 deletions
diff --git a/host/lib/usrp/common/apply_corrections.cpp b/host/lib/usrp/common/apply_corrections.cpp
index 6aee00753..b889266f2 100644
--- a/host/lib/usrp/common/apply_corrections.cpp
+++ b/host/lib/usrp/common/apply_corrections.cpp
@@ -54,7 +54,7 @@ static bool fe_cal_comp(fe_cal_t a, fe_cal_t b){
static uhd::dict<std::string, std::vector<fe_cal_t> > fe_cal_cache;
-static std::complex<double> get_fe_dc_correction(
+static std::complex<double> get_fe_correction(
const std::string &key, const double lo_freq
){
const std::vector<fe_cal_t> &datas = fe_cal_cache[key];
@@ -81,36 +81,6 @@ static std::complex<double> get_fe_dc_correction(
);
}
-static std::complex<double> get_fe_iq_correction(
- const std::string &key, const double lo_freq
-){
- const std::vector<fe_cal_t> &datas = fe_cal_cache[key];
- if (datas.empty()) throw uhd::runtime_error("empty calibration table " + key);
-
- //search for lo freq
- size_t lo_index = 0;
- size_t hi_index = datas.size()-1;
- for (size_t i = 0; i < datas.size(); i++){
- if (datas[i].lo_freq > lo_freq){
- hi_index = i;
- break;
- }
- lo_index = i;
- }
-
- if (lo_index == 0) return std::complex<double>(datas[lo_index].iq_corr_real, datas[lo_index].iq_corr_imag);
- if (hi_index == lo_index) return std::complex<double>(datas[hi_index].iq_corr_real, datas[hi_index].iq_corr_imag);
-
- const std::complex<double> lo_val(datas[lo_index].iq_corr_real, datas[lo_index].iq_corr_imag);
- const std::complex<double> hi_val(datas[hi_index].iq_corr_real, datas[hi_index].iq_corr_imag);
-
- //interpolation time
- return std::polar<double>(
- linear_interp(lo_freq, datas[lo_index].lo_freq, std::abs(lo_val), datas[hi_index].lo_freq, std::abs(hi_val)),
- linear_interp(lo_freq, datas[lo_index].lo_freq, std::arg(lo_val), datas[hi_index].lo_freq, std::arg(hi_val))
- );
-}
-
static void apply_fe_corrections(
uhd::property_tree::sptr sub_tree,
const uhd::fs_path &db_path,
@@ -155,15 +125,8 @@ static void apply_fe_corrections(
}
- if (file_prefix.find("dc_cal") != std::string::npos){
- sub_tree->access<std::complex<double> >(fe_path)
- .set(get_fe_dc_correction(cal_data_path.string(), lo_freq));
- }
- else if (file_prefix.find("iq_cal") != std::string::npos){
- sub_tree->access<std::complex<double> >(fe_path)
- .set(get_fe_iq_correction(cal_data_path.string(), lo_freq));
- }
- else throw uhd::runtime_error("could not determine interpolation function");
+ sub_tree->access<std::complex<double> >(fe_path)
+ .set(get_fe_correction(cal_data_path.string(), lo_freq));
}
/***********************************************************************
@@ -180,14 +143,14 @@ void uhd::usrp::apply_tx_fe_corrections(
sub_tree,
"dboards/" + slot + "/tx_eeprom",
"tx_frontends/" + slot + "/iq_balance/value",
- "tx_iq_cal_v0.1_",
+ "tx_iq_cal_v0.2_",
lo_freq
);
apply_fe_corrections(
sub_tree,
"dboards/" + slot + "/tx_eeprom",
"tx_frontends/" + slot + "/dc_offset/value",
- "tx_dc_cal_v0.1_",
+ "tx_dc_cal_v0.2_",
lo_freq
);
}
@@ -207,7 +170,7 @@ void uhd::usrp::apply_rx_fe_corrections(
sub_tree,
"dboards/" + slot + "/rx_eeprom",
"rx_frontends/" + slot + "/iq_balance/value",
- "rx_iq_cal_v0.1_",
+ "rx_iq_cal_v0.2_",
lo_freq
);
}