fix HitagS simulation erors (issue #605) (#606)

[proxmark3-svn] / fpga / hi_read_tx.v

diff --git a/fpga/hi_read_tx.v b/fpga/hi_read_tx.v
index f12e64eb65c2f8fea1adf6eba8dd211a8ff33a61..fc309cde6cedb60fd86f12a72aaeb44110f832e2 100644 (file)
--- a/fpga/hi_read_tx.v
+++ b/fpga/hi_read_tx.v
@@ -24,33 +24,36 @@ module hi_read_tx(
     output dbg;
     input shallow_modulation;
 
     output dbg;
     input shallow_modulation;
 

+// low frequency outputs, not relevant
+assign pwr_lo = 1'b0;
+assign pwr_oe2 = 1'b0;
+       

 // The high-frequency stuff. For now, for testing, just bring out the carrier,
 // and allow the ARM to modulate it over the SSP.
 reg pwr_hi;
 reg pwr_oe1;
 // The high-frequency stuff. For now, for testing, just bring out the carrier,
 // and allow the ARM to modulate it over the SSP.
 reg pwr_hi;
 reg pwr_oe1;

-reg pwr_oe2;

 reg pwr_oe3;
 reg pwr_oe4;
 reg pwr_oe3;
 reg pwr_oe4;

+

 always @(ck_1356megb or ssp_dout or shallow_modulation)
 begin
     if(shallow_modulation)
     begin
         pwr_hi <= ck_1356megb;
 always @(ck_1356megb or ssp_dout or shallow_modulation)
 begin
     if(shallow_modulation)
     begin
         pwr_hi <= ck_1356megb;

-        pwr_oe1 <= ~ssp_dout;
-        pwr_oe2 <= ~ssp_dout;
-        pwr_oe3 <= ~ssp_dout;
-        pwr_oe4 <= 1'b0;
+        pwr_oe1 <= 1'b0;
+        pwr_oe3 <= 1'b0;
+        pwr_oe4 <= ~ssp_dout;

     end
     else
     begin
         pwr_hi <= ck_1356megb & ssp_dout;
         pwr_oe1 <= 1'b0;
     end
     else
     begin
         pwr_hi <= ck_1356megb & ssp_dout;
         pwr_oe1 <= 1'b0;

-        pwr_oe2 <= 1'b0;

         pwr_oe3 <= 1'b0;
         pwr_oe4 <= 1'b0;
     end
 end
 
         pwr_oe3 <= 1'b0;
         pwr_oe4 <= 1'b0;
     end
 end
 

+

 // Then just divide the 13.56 MHz clock down to produce appropriate clocks
 // for the synchronous serial port.
 
 // Then just divide the 13.56 MHz clock down to produce appropriate clocks
 // for the synchronous serial port.
 


@@ -83,7 +86,6 @@ end
 
 assign ssp_din = after_hysteresis;
 
 
 assign ssp_din = after_hysteresis;
 

-assign pwr_lo = 1'b0;

 assign dbg = ssp_din;
 
 endmodule
 assign dbg = ssp_din;
 
 endmodule