style

fpga/fpga_hf.v

@@ -13,6 +13,8 @@
 // iZsh <izsh at fail0verflow.com>, June 2014
 //-----------------------------------------------------------------------------
 
+`define FPGA_CMD_SET_CONFREG                        1
+
 `include "hi_read_tx.v"
 `include "hi_read_rx_xcorr.v"
 `include "hi_simulate.v"
@@ -48,7 +50,10 @@ reg [7:0] conf_word;
 always @(posedge ncs)
 begin
     case(shift_reg[15:12])
-        4'b0001: conf_word <= shift_reg[7:0];       // FPGA_CMD_SET_CONFREG
+        `FPGA_CMD_SET_CONFREG:
+        begin
+            conf_word <= shift_reg[7:0];
+        end
     endcase
 end
 
@@ -61,8 +66,7 @@ begin
     end
 end
 
-wire [2:0] major_mode;
+wire [2:0] major_mode = conf_word[7:5];
-assign major_mode = conf_word[7:5];
 
 // For the high-frequency transmit configuration: modulation depth, either
 // 100% (just quite driving antenna, steady LOW), or shallower (tri-state
@@ -72,8 +76,10 @@ wire hi_read_tx_shallow_modulation = conf_word[0];
 // For the high-frequency receive correlator: frequency against which to
 // correlate.
 wire hi_read_rx_xcorr_848 = conf_word[0];
+
 // and whether to drive the coil (reader) or just short it (snooper)
 wire hi_read_rx_xcorr_snoop = conf_word[1];
+
 // divide subcarrier frequency by 4
 wire hi_read_rx_xcorr_quarter = conf_word[2];