implement 'hf iclass snoop -j'

[proxmark3-svn] / fpga / fpga_lf.v

diff --git a/fpga/fpga_lf.v b/fpga/fpga_lf.v
index 1b7a112766e6dfce2c9be9ad714b5faafecbae86..bb0795e87ecbe87272fb9cac56f91c8b470db6a7 100644 (file)
--- a/fpga/fpga_lf.v
+++ b/fpga/fpga_lf.v
@@ -29,17 +29,18 @@ module fpga_lf(
 
 reg [15:0] shift_reg;
 reg [7:0] divisor;
-reg [7:0] conf_word;
+reg [8:0] conf_word;
 reg [7:0] user_byte1;
 
 always @(posedge ncs)
 begin
-       case(shift_reg[15:12])
-               4'b0001:
+       case (shift_reg[15:12])
+               4'b0001:                                    // FPGA_CMD_SET_CONFREG
                        begin
-                               conf_word <= shift_reg[7:0];
-                               if (shift_reg[7:0] == 8'b00000001) begin // LF edge detect
-                                       user_byte1 <= 127; // default threshold
+                               conf_word <= shift_reg[8:0];
+                               if (shift_reg[8:0] == 9'b000000001) 
+                               begin                               // LF edge detect
+                                       user_byte1 <= 127;              // default threshold
                                end
                        end
                4'b0010: divisor <= shift_reg[7:0];                     // FPGA_CMD_SET_DIVISOR
@@ -49,14 +50,14 @@ end
 
 always @(posedge spck)
 begin
-       if(~ncs)
+       if (~ncs)
        begin
                shift_reg[15:1] <= shift_reg[14:0];
                shift_reg[0] <= mosi;
        end
 end
 
-wire [2:0] major_mode = conf_word[7:5];
+wire [2:0] major_mode = conf_word[8:6];
 
 // For the low-frequency configuration:
 wire lf_field = conf_word[0];