diff --git a/demo01_accelerometer_test/compile.do b/demo01_accelerometer_test/compile.do
new file mode 100644
index 0000000..25d36e9
--- /dev/null
+++ b/demo01_accelerometer_test/compile.do
@@ -0,0 +1,4 @@
+vlog sequencer.v
+vlog spi_master.v
+vlog top.v
+vlog top_tb.v
diff --git a/demo01_accelerometer_test/sequencer.v b/demo01_accelerometer_test/sequencer.v
index 03faff3..4344a0b 100644
--- a/demo01_accelerometer_test/sequencer.v
+++ b/demo01_accelerometer_test/sequencer.v
@@ -8,7 +8,8 @@ module sequencer (
 	
 	output reg spi_request,
 	input  wire spi_ready,
-	
+    input  wire spi_csn,
+
 	output reg [7:0] led_out
 );
 
@@ -22,9 +23,10 @@ localparam
 	STATE_Init2 = 4'd6,
 	STATE_Init2_Wait = 4'd7,
 	STATE_Read = 4'd8,
-	STATE_Read_Wait = 4'd9,
-	STATE_LEDout = 4'd10;
-	
+	STATE_LEDout_Wait = 4'd9,
+	STATE_Read_Wait = 4'd10,
+	STATE_LEDout = 4'd11;
+
 reg [3:0] state;
 
 reg signed [7:0] saved_acc;
@@ -108,26 +110,33 @@ always @(posedge clk_in or negedge nrst)
 			end
 			
 			// 5. Read OUT_X_H (Addr 0x29)
+			STATE_Read_Wait: begin
+				if (spi_ready) begin
+					state <= STATE_Read;
+				end
+				spi_request <= 1'b0;
+			end
+
 			STATE_Read: begin
-				state <= STATE_Read_Wait;
-				
+				state <= STATE_LEDout_Wait;
+
 				spi_request <= 1'b1;
 				spi_nbits <= 6'd23;
 				spi_mosi_data <= 31'b11101000_00000000_00000000;
 			end
-			
-			STATE_Read_Wait: begin
-				if (spi_ready) begin
-					state <= STATE_LEDout;
+
+            STATE_LEDout_Wait: begin
+                if (spi_request == 0 && spi_csn == 1) begin
+                    state <= STATE_LEDout;
 					saved_acc <= spi_miso_data[7:0];
-				end 
-				spi_request <= 1'b0;
-			end
-			
+                end
+                spi_request <= 1'b0;
+            end
+
 			// 6. Set LED output according to accelerometer value
 			STATE_LEDout: begin
-				state <= STATE_Read;
-				
+				state <= STATE_Read_Wait;
+
 				led_out <= 1 << ((saved_acc + 8'Sb1000_0000) >> 5);
 			end
 		endcase
diff --git a/demo01_accelerometer_test/top.v b/demo01_accelerometer_test/top.v
index 1049a18..f729b71 100644
--- a/demo01_accelerometer_test/top.v
+++ b/demo01_accelerometer_test/top.v
@@ -20,6 +20,9 @@ wire [5:0] spi_nbits;
 wire spi_request;
 wire spi_ready;
 
+wire spi_csn;
+assign SEN_CS = spi_csn;
+
 sequencer U1 (
 	.clk_in(CLK12M),
 	.nrst(nrst),
@@ -30,19 +33,21 @@ sequencer U1 (
 	
 	.spi_request(spi_request),
 	.spi_ready(spi_ready),
-	
+	.spi_csn(spi_csn),
+
 	.led_out(LED)
 );
-	
-spi_master U2 (
+
+spi_master #(.div_coef(32'd200))
+U2 (
 	.clk_in(CLK12M),
 	.nrst(nrst),
 	
 	.spi_sck(SEN_SPC),
 	.spi_mosi(SEN_SDI),
 	.spi_miso(SEN_SDO),
-	.spi_csn(SEN_CS),
-	
+	.spi_csn(spi_csn),
+
 	.mosi_data(spi_mosi_data),
 	.miso_data(spi_miso_data),
 	.nbits(spi_nbits),
diff --git a/demo01_accelerometer_test/top_tb.v b/demo01_accelerometer_test/top_tb.v
index 628806c..89a37cc 100644
--- a/demo01_accelerometer_test/top_tb.v
+++ b/demo01_accelerometer_test/top_tb.v
@@ -28,15 +28,13 @@ spi_master #(.div_coef(32'd100))
 DUT2 (
 	.clk_in(CLK),
 	.nrst(NRESET),
-	.spi_clk(spi_clk),
-	.spi_sdo(spi_sdo),
-	.spi_sdi(spi_sdi),
-	.spi_cs(spi_cs),
-	
-	.data_in(data_in),
-	.data_out(data_out),
-	.n_bits(n_bits),    // n_bits==0 -> 1 bit transfer
-	
+	.spi_sck(spi_clk),
+	.spi_mosi(spi_sdo),
+	.spi_miso(spi_sdi),
+	.spi_csn(spi_cs),
+	.mosi_data(data_in),
+	.miso_data(data_out),
+	.nbits(n_bits),
 	.request(request),
 	.ready(ready)
 );