diff options
Diffstat (limited to 'mpm')
| -rw-r--r-- | mpm/python/usrp_mpm/cores/tdc_sync.py | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/mpm/python/usrp_mpm/cores/tdc_sync.py b/mpm/python/usrp_mpm/cores/tdc_sync.py index dadd78ac5..4d11e1b1d 100644 --- a/mpm/python/usrp_mpm/cores/tdc_sync.py +++ b/mpm/python/usrp_mpm/cores/tdc_sync.py @@ -207,26 +207,28 @@ class ClockSynchronizer(object): measure_offset() # Now, read off 512 measurements and take the mean of them. - num_meas = 256 # FIXME back to 512 + num_meas = 512 self.log.trace("Reading {} TDC measurements from device...".format(num_meas)) current_value = mean([measure_offset() for _ in range(num_meas)]) + self.log.trace("TDC measurements collected.") # The high and low bounds for this are set programmatically based on the # Reference and Sample Frequencies and the TDC structure. The bounds are: # Low = T_refclk + T_sampleclk*(3) # High = T_refclk + T_sampleclk*(4) # For slop, we add in another T_sampleclk on either side. - low_bound = 1.0/self.ref_clk_freq + (1.0/self.radio_clk_freq)*2 + low_bound = 1.0/self.ref_clk_freq + (1.0/self.radio_clk_freq)*2 high_bound = 1.0/self.ref_clk_freq + (1.0/self.radio_clk_freq)*5 if (current_value < low_bound) or (current_value > high_bound): self.log.error("Clock synchronizer measured a " - "current value of {:.3f} ns. Range is [{:.3f},{:.3f}] ns".format( - current_value*1e9, low_bound*1e9, high_bound*1e9 - )) + "current value of {:.3f} ns. " \ + "Range is [{:.3f},{:.3f}] ns".format( + current_value*1e9, + low_bound*1e9, + high_bound*1e9)) raise RuntimeError("TDC measurement out of range! " "Current value: {:.3f} ns.".format( - current_value*1e9 - )) + current_value*1e9)) # Run the initial value through the oracle to determine the adjustments to make. coarse_steps_required, dac_word_delta, distance_to_target = self.oracle( |