From: Bernhard Urban <lewurm@gmail.com>
Date: Thu, 27 May 2010 07:08:06 +0000 (+0200)
Subject: uart_tx: jaja, 0x42 (= b"0100 0010", 'B') ist kein gutes zeichen zum UART testen ;)
X-Git-Tag: abgabe~14
X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=hwmod.git;a=commitdiff_plain;h=1353e79fd80c9a6fd96f830a85e12ab457822a43

uart_tx: jaja, 0x42 (= b"0100 0010", 'B') ist kein gutes zeichen zum UART testen ;)
---

diff --git a/src/beh_uart_tx_tb.vhd b/src/beh_uart_tx_tb.vhd
index 58fb2ab..3f75682 100644
--- a/src/beh_uart_tx_tb.vhd
+++ b/src/beh_uart_tx_tb.vhd
@@ -83,14 +83,14 @@ begin
 		icwait(sys_clk, 2);
 
 		-- 1. parameter: testfallnummer
-		-- 2. parameter: STARTBIT (1 bit) - immer '0' | 8 DATENBITS | 1 STOPBIT - immer '1'
+		-- 2. parameter: STARTBIT (1 bit) - immer '0' | 8 DATENBITS (reversed) | 1 STOPBIT - immer '1'
 		-- 3. parameter: byte das gesendet werden soll
-		exec_tc(1, b"0000011111", b"00001111");
-		exec_tc(2, b"0101010101", b"10101010");
-		exec_tc(3, b"0110011001", b"11001100");
-		exec_tc(4, b"0001100111", b"00110011");
-		exec_tc(5, b"0010101011", b"01010101");
-		exec_tc(6, b"0100110111", b"10011011");
+		exec_tc(1, b"0000011111", b"11110000");
+		exec_tc(2, b"0101010101", b"01010101");
+		exec_tc(3, b"0110011001", b"00110011");
+		exec_tc(4, b"0001100111", b"11001100");
+		exec_tc(5, b"0010101011", b"10101010");
+		exec_tc(6, b"0100110111", b"11011001");
 
 		stop <= true;
 		wait;
diff --git a/src/uart_tx.vhd b/src/uart_tx.vhd
index 8f15f5b..a851656 100644
--- a/src/uart_tx.vhd
+++ b/src/uart_tx.vhd
@@ -26,7 +26,7 @@ architecture beh of uart_tx is
 
 	signal txd_next, txd_int : std_logic;
 	signal tx_done_next, tx_done_int : std_logic;
-	signal tx_to_send : std_logic_vector(0 to 10);
+	signal tx_to_send : std_logic_vector(10 downto 0);
 	signal bitcnt_int, bitcnt_next : integer range 0 to 11;
 	signal baudcnt_int, baudcnt_next : integer range 0 to BAUD;
 begin
@@ -48,8 +48,8 @@ begin
 			tx_done_int <= tx_done_next;
 			bitcnt_int <= bitcnt_next;
 			baudcnt_int <= baudcnt_next;
-			-- HIGHBIT (1) | STARTBIT (1) | DATA (8) | STOPBIT (1)
-			tx_to_send <= '1' & '0' & tx_data & '1';
+			-- STOPBIT (1) | DATA (8) | STARTBIT (1) | HIGHBIT (1)
+			tx_to_send <= '1' & tx_data & '0' & '1';
 		end if;
 	end process;