- Correct little distraction on fpga/Makefile

- New patch from pwpiwi works very well for hi_sniffer.v
- Restored previous fpga_lf.bit

fpga/Makefile

@@ -5,11 +5,11 @@ clean:
 	$(DELETE) *.bgn *.drc *.ncd *.ngd *_par.xrpt *-placed.* *-placed_pad.* *_usage.xml xst_hf.srp xst_lf.srp
 	$(DELETE) *.map *.ngc *.xrpt *.pcf *.rbt *_auto_* *.bld *.mrp *.ngm *.unroutes *_summary.xml netlist.lst xst
 
-fpga_hf.ngc: fpga_hf.v fpga.ucf xst_hf.scr util.v hi_simulate.v hi_read_tx.v hi_read_rx_xcorr.v hi_iso14443a.v
+fpga_hf.ngc: fpga_hf.v fpga.ucf xst_hf.scr util.v hi_simulate.v hi_read_tx.v hi_read_rx_xcorr.v hi_iso14443a.v hi_sniffer.v
 	$(DELETE) $@
 	$(XILINX_TOOLS_PREFIX)xst -ifn xst_hf.scr
 
-fpga_lf.ngc: fpga_lf.v fpga.ucf xst_lf.scr util.v clk_divider.v lo_edge_detect.v lo_read.v lo_passthru.v lp20khz_1MSa_iir_filter.v min_max_tracker.v lf_edge_detect.v hi_sniffer.v
+fpga_lf.ngc: fpga_lf.v fpga.ucf xst_lf.scr util.v clk_divider.v lo_edge_detect.v lo_read.v lo_passthru.v lp20khz_1MSa_iir_filter.v min_max_tracker.v lf_edge_detect.v
 	$(DELETE) $@
 	$(XILINX_TOOLS_PREFIX)xst -ifn xst_lf.scr
 

fpga/hi_sniffer.v

@@ -1,4 +1,3 @@
-
 module hi_sniffer(
     pck0, ck_1356meg, ck_1356megb,
     pwr_lo, pwr_hi, pwr_oe1, pwr_oe2, pwr_oe3, pwr_oe4,
@@ -19,59 +18,40 @@ module hi_sniffer(
     input xcorr_is_848, snoop, xcorr_quarter_freq; // not used.
 
 // We are only snooping, all off.
-assign pwr_hi  = 1'b0;// ck_1356megb & (~snoop);
+assign pwr_hi  = 1'b0;
+assign pwr_lo  = 1'b0;
 assign pwr_oe1 = 1'b0;
 assign pwr_oe2 = 1'b0;
 assign pwr_oe3 = 1'b0;
 assign pwr_oe4 = 1'b0;
 
-reg ssp_clk = 1'b0;
 reg ssp_frame;
-reg adc_clk;
 reg [7:0] adc_d_out = 8'd0;
-reg [7:0] ssp_cnt = 8'd0;
-reg [7:0] pck_divider = 8'd0;
-reg ant_lo = 1'b0;
-reg bit_to_send = 1'b0;
+reg [2:0] ssp_cnt = 3'd0;
 
-always @(ck_1356meg, pck0) // should synthetisize to a mux..
-  begin
-    adc_clk = ck_1356meg;
-    ssp_clk = ~ck_1356meg;
-  end
+assign adc_clk = ck_1356meg;
+assign ssp_clk = ~ck_1356meg;
 
-reg [7:0] cnt_test = 8'd0; // test
-
-always @(posedge pck0)
+always @(posedge ssp_clk)
 begin
-    ant_lo <= 1'b0;
+    if(ssp_cnt[2:0] == 3'd7)
+        ssp_cnt[2:0] <= 3'd0;
+    else
+        ssp_cnt <= ssp_cnt + 1;
+
+    if(ssp_cnt[2:0] == 3'b000) // set frame length
+        begin
+            adc_d_out[7:0] <= adc_d;
+            ssp_frame <= 1'b1;
+        end
+    else
+        begin
+            adc_d_out[7:0] <= {1'b0, adc_d_out[7:1]};
+            ssp_frame <= 1'b0;
+        end
+
 end
 
-always @(posedge ssp_clk) // ~1356 (hf)
-begin
-  if(ssp_cnt[7:0] == 8'd255) // SSP counter for divides.
-    ssp_cnt[7:0] <= 8'd0;
-  else
-    ssp_cnt <= ssp_cnt + 1;
-
-      if((ssp_cnt[2:0] == 3'b000) && !ant_lo) // To set frame  length
-        begin
-          adc_d_out[7:0] = adc_d; // disable for test
-          bit_to_send = adc_d_out[0];
-          ssp_frame <= 1'b1;
-        end
-      else
-        begin
-          adc_d_out[6:0] = adc_d_out[7:1];
-          adc_d_out[7] = 1'b0; // according to old lf_read.v comment prevents gliches if not set.
-          bit_to_send = adc_d_out[0];
-          ssp_frame <= 1'b0;
-        end
-end
-
-assign ssp_din = bit_to_send && !ant_lo;//bit_to_send && !ant_lo; // && .. not needed i guess?
-
-assign pwr_lo = ant_lo;
-      
+assign ssp_din = adc_d_out[0];
 
 endmodule