From 3dd4ccf8e17309ed97e5bdbd8cff6a2855d284fa Mon Sep 17 00:00:00 2001
From: Friedrich Beckmann <friedrich.beckmann@hs-augsburg.de>
Date: Wed, 15 May 2024 06:47:25 +0200
Subject: top_uart solutions

---
 src/uart_tx_shift.vhd | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/uart_tx_shift.vhd')

diff --git a/src/uart_tx_shift.vhd b/src/uart_tx_shift.vhd
index b81fe78..f5724f6 100644
--- a/src/uart_tx_shift.vhd
+++ b/src/uart_tx_shift.vhd
@@ -12,7 +12,11 @@ entity uart_tx_shift is
 end entity;
 
 architecture rtl of uart_tx_shift is
+  signal sr, srn : std_ulogic_vector(8 downto 0);
 begin
-
+  sr <= (others => '1') when rst_n = '0' else srn when rising_edge(clk);
+  srn <= d_i & '0' when start_i = '1' else
+         '1' & sr(8 downto 1) when en_i = '1' else sr;
+  tx_o <= sr(0);
 end architecture rtl;
 
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