usrp-e100: add ability to set/get default master clock rate from EEPROM

Mboard eeprom map class can parse the setting (4 byte float).
The clock control will try to set the eeprom rate if present,
otherwise or under failure condition, it sets the default.

Updated docs, example, and provided helpful verbose.
I would prefer that users burn the desired rate to the eeprom (and they may too).

1 files changed, 1 insertions, 8 deletions

diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
index 28d7ee466..05cc0717b 100644
--- a/host/examples/rx_timed_samples.cpp
+++ b/host/examples/rx_timed_samples.cpp
@@ -32,7 +32,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     std::string args;
     double seconds_in_future;
     size_t total_num_samps;
-    double rate, clock;
+    double rate;
 
     //setup the program options
     po::options_description desc("Allowed options");
@@ -41,7 +41,6 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
         ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
         ("secs", po::value<double>(&seconds_in_future)->default_value(1.5), "number of seconds in the future to receive")
         ("nsamps", po::value<size_t>(&total_num_samps)->default_value(10000), "total number of samples to receive")
-        ("clock", po::value<double>(&clock), "master clock frequency in Hz")
         ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
         ("dilv", "specify to disable inner-loop verbose")
     ;
@@ -63,12 +62,6 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){
     uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
     std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
 
-    //optionally set the clock rate (do before setting anything else)
-    if (vm.count("clock")){
-        std::cout << boost::format("Setting master clock rate: %f MHz...") % (clock/1e6) << std::endl;
-        usrp->set_master_clock_rate(clock);
-    }
-
     //set the rx sample rate
     std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
     usrp->set_rx_rate(rate);