修改spitb clk, 可以测试cdr的偏移

tb/shinTest/ShinTopSpiTb_clk.v

@@ -505,13 +505,13 @@ always @(negedge reset) begin
   _reset_deactive <= 1'b1;
 end
 
-  `define SCKFRE #64000000
+  `define SCKFRE 64000000
 
   reg sck = 0;
   
   initial begin
       forever begin 
-        `SCKFRE sck <= ~sck;
+        #`SCKFRE sck <= ~sck;
       end
   end
 
@@ -607,6 +607,15 @@ always @(negedge sck) begin
   end
 end
 
+//输入
+always @(negedge sck) begin
+  if( isBusy ) begin
+    if( transCnt == length & &bitCnt ) begin
+      spi_csn[idx] <= #(`SCKFRE/2) 1'b1;
+    end
+  end
+end
+
 //输入
 always @(posedge sck) begin
   if( isBusy ) begin
@@ -651,7 +660,6 @@ always @(posedge sck) begin
       end
     end else begin
       isBusy       <= #500000 1'b0;
-      spi_csn[idx] <= #500000 1'b1;
     end
   end
 end
@@ -668,7 +676,7 @@ task spi_trans( input [15:0] saddress, input [7:0] scmd, input [12:0] slength, i
     if (sidx >=(`ALL_DEV_NUM * 3)) begin
         txBuf[2] <= (scmd | slength[12:8]);
         txBuf[3] <= slength[7:0];
-        length <= slength + 4;
+        length <= slength + 4 + 1;
     end else begin
         txBuf[2] <= scmd;
         length <= slength + 3;
@@ -685,6 +693,7 @@ task spi_trans( input [15:0] saddress, input [7:0] scmd, input [12:0] slength, i
     @( negedge isBusy) #100000000
     begin 
       //$fwrite(spidata_file, "------------%5t------------\n", $realtime);
+      if (sidx >=(`ALL_DEV_NUM * 3)) begin
       $fwrite(spidata_file, "T:%t \tdev:%4d(%4d), addr:0x%02h%02h, %s, len:%4d (0x%02h%02h)\n", 
           $realtime, 
           sidx % (`ALL_DEV_NUM), sidx,
@@ -693,6 +702,15 @@ task spi_trans( input [15:0] saddress, input [7:0] scmd, input [12:0] slength, i
           (((txBuf[2] & 8'h80) == 0)? "Write":" Read"), 
           slength,
           txBuf[2], txBuf[3]);
+      end else begin
+        $fwrite(spidata_file, "T:%t \tdev:%4d(%4d), addr:0x%02h%02h, %s, len:%4d\n", 
+          $realtime, 
+          sidx % (`ALL_DEV_NUM), sidx,
+          txBuf[0],
+          txBuf[1],
+          (((txBuf[2] & 8'h80) == 0)? "Write":" Read"), 
+          slength);
+      end
       
       if (sidx >=(`ALL_DEV_NUM * 3)) begin _pos = 4; end
       else begin _pos = 3; end