Correctly implement 7-segment display LED persistence

1 files changed, 16 insertions, 12 deletions

diff --git a/fpga/serial/common/remote_access.v b/fpga/serial/common/remote_access.v
index 9afdbf2..b7f0592 100644
--- a/fpga/serial/common/remote_access.v
+++ b/fpga/serial/common/remote_access.v
@@ -151,35 +151,39 @@ module remote_access(
 		led_segment_bus_latch = led_segment_bus;
 		led_digit_select_latch = led_digit_select;
 
-		if (led_digit_select_latch[0] == 0) begin
-			led_display_bytes[0] = led_segment_bus_latch;
-			digit_blanker_1 = 0;
+		if (led_digit_select_latch[0] == 1) begin
+			digit_blanker_1 = digit_blanker_1 + 1;
+		end
+
+		if (led_digit_select_latch[1] == 1) begin
 			digit_blanker_2 = digit_blanker_2 + 1;
+		end
+
+		if (led_digit_select_latch[2] == 1) begin
 			digit_blanker_3 = digit_blanker_3 + 1;
+		end
+
+		if (led_digit_select_latch[3] == 1) begin
 			digit_blanker_4 = digit_blanker_4 + 1;
 		end
+
+		if (led_digit_select_latch[0] == 0) begin
+			led_display_bytes[0] = led_segment_bus_latch;
+			digit_blanker_1 = 0;
+		end
 		
 		if (led_digit_select_latch[1] == 0) begin
 			led_display_bytes[1] = led_segment_bus_latch;
-			digit_blanker_1 = digit_blanker_1 + 1;
 			digit_blanker_2 = 0;
-			digit_blanker_3 = digit_blanker_3 + 1;
-			digit_blanker_4 = digit_blanker_4 + 1;
 		end
 		
 		if (led_digit_select_latch[2] == 0) begin
 			led_display_bytes[2] = led_segment_bus_latch;
-			digit_blanker_1 = digit_blanker_1 + 1;
-			digit_blanker_2 = digit_blanker_2 + 1;
 			digit_blanker_3 = 0;
-			digit_blanker_4 = digit_blanker_4 + 1;
 		end
 		
 		if (led_digit_select_latch[3] == 0) begin
 			led_display_bytes[3] = led_segment_bus_latch;
-			digit_blanker_1 = digit_blanker_1 + 1;
-			digit_blanker_2 = digit_blanker_2 + 1;
-			digit_blanker_3 = digit_blanker_3 + 1;
 			digit_blanker_4 = 0;
 		end