[Commit-gnuradio] r9485 - gnuradio/trunk/usrp/fpga/sdr_lib

[matt]

Author: matt
Date: 2008-09-02 13:50:09 -0600 (Tue, 02 Sep 2008)
New Revision: 9485

Modified:
   gnuradio/trunk/usrp/fpga/sdr_lib/cic_interp.v
Log:
Allows for changing the interpolation rate dynamically.  Stop the pipeline, set 
the rate, restart the pipeline.  Fixes bug #248.


Modified: gnuradio/trunk/usrp/fpga/sdr_lib/cic_interp.v
===================================================================
--- gnuradio/trunk/usrp/fpga/sdr_lib/cic_interp.v       2008-09-02 18:13:40 UTC 
(rev 9484)
+++ gnuradio/trunk/usrp/fpga/sdr_lib/cic_interp.v       2008-09-02 19:50:09 UTC 
(rev 9485)
@@ -45,11 +45,12 @@
 
    sign_extend #(bw,bw+maxbitgain) 
       ext_input (.in(signal_in),.out(signal_in_ext));
-   
+
+   wire    clear_me = reset | ~enable;
    //FIXME Note that this section has pipe and diff reversed
    // It still works, but is confusing
    always @(posedge clock)
-     if(reset)
+     if(clear_me)
        for(i=0;i<N;i=i+1)
         integrator[i] <= #1 0;
      else if (enable & strobe_out)
@@ -61,7 +62,7 @@
        end
    
    always @(posedge clock)
-     if(reset)
+     if(clear_me)
        begin
          for(i=0;i<N;i=i+1)
            begin