jens/vhdl
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[JUART]

Browse Source 
- renamed ports

git-svn-id: http://moon:8086/svn/vhdl/trunk@1351 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2016-12-20 19:09:45 +00:00
parent 9522e9e22e
commit 82a500a99b
6 changed files with 87 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/uart/juart_rx.vhd
+18 -15
View File
@@ -19,13 +19,16 @@ use IEEE.numeric_std.ALL;
-- Main Entity
--
entity juart_rx is
Port ( serial_in : in std_logic;
data_out : out unsigned(7 downto 0);
data_strobe : out std_logic;
en_16_x_baud : in std_logic;
clk : in std_logic;
rst : in std_logic);
end juart_rx;
Port
(
rst : in std_logic;
clk : in std_logic;
ser_in : in std_logic;
dout : out unsigned(7 downto 0);
dout_vld : out std_logic;
en_16_x_baud : in std_logic
);
end juart_rx;
--
------------------------------------------------------------------------------------
--
@@ -72,10 +75,10 @@ data_out_reg:
process(clk)
begin
if rising_edge(clk) then
data_strobe <= '0';
dout_vld <= '0';
if data_valid = '1' then
data_out <= shiftreg;
data_strobe <= '1';
dout <= shiftreg;
dout_vld <= '1';
end if;
end if;
end process;
@@ -85,7 +88,7 @@ process(clk)
begin
if rising_edge(clk) then
if rst = '1' then
state <= idle;
state <= idle;
else
state <= state_next;
end if;
@@ -93,7 +96,7 @@ begin
end process;
statemachine:
process(state, is_idle, bit_count, bit_sample, serial_in)
process(state, is_idle, bit_count, bit_sample, ser_in)
begin
state_next <= state;
sample_count_rst <= '1';
@@ -107,7 +110,7 @@ begin
state_next <= wait_start;
end if;
when wait_start =>
if serial_in = '0' then
if ser_in = '0' then
sample_count_rst <= '0';
state_next <= start;
end if;
@@ -139,7 +142,7 @@ begin
if rst = '1' then
shiftreg <= (others => '0');
elsif shiftreg_en = '1' and bit_sample = '1' and en_16_x_baud = '1' then
shiftreg <= shiftreg(shiftreg'left-1 downto 0) & serial_in;
shiftreg <= shiftreg(shiftreg'left-1 downto 0) & ser_in;
end if;
end if;
end process;
@@ -172,7 +175,7 @@ idle_detector:
process(clk)
begin
if rising_edge(clk) then
if serial_in = '0' then
if ser_in = '0' then
idle_count <= idle_count_t'high;
elsif idle_count /= 0 and en_16_x_baud = '1' then
idle_count <= idle_count - 1;
lib/uart/juart_tx.vhd
+14 -12
View File
@@ -14,15 +14,17 @@ use IEEE.numeric_std.ALL;
-- Main Entity
--
entity juart_tx is
Port ( data_in : in unsigned(7 downto 0);
send_character : in std_logic;
en_16_x_baud : in std_logic;
serial_out : out std_logic;
Tx_complete : out std_logic;
clk : in std_logic;
rst : in std_logic
);
end juart_tx;
Port
(
rst : in std_logic;
clk : in std_logic;
we : in std_logic;
din : in unsigned(7 downto 0);
en_16_x_baud : in std_logic;
Tx_complete : out std_logic;
ser_out : out std_logic
);
end juart_tx;
--
------------------------------------------------------------------------------------
--
@@ -49,7 +51,7 @@ signal bit_count : unsigned (3 downto 0);
--
--
begin
serial_out <= shiftreg(shiftreg'left);
ser_out <= shiftreg(shiftreg'left);
Tx_complete <= not busy;
shift_enable_counter:
@@ -93,10 +95,10 @@ begin
busy <= '0';
start <= '0';
elsif busy = '0' then
if send_character = '1' then
if we = '1' then
busy <= '1';
start <= '1';
dinreg <= data_in;
dinreg <= din;
end if;
elsif shift_enable = '1' then
if start = '1' then
lib/uart/sim/tb_juart_rx.wdo
+14 -14
View File
@@ -3,22 +3,22 @@ quietly WaveActivateNextPane {} 0
add wave -noupdate -format Logic /tb_juart_rx/rst
add wave -noupdate -format Logic /tb_juart_rx/clk
add wave -noupdate -format Logic /tb_juart_rx/en_16_x_baud
add wave -noupdate -format Logic /tb_juart_rx/serial_in
add wave -noupdate -format Logic /tb_juart_rx/data_strobe
add wave -noupdate -format Logic /tb_juart_rx/ser_in
add wave -noupdate -format Logic /tb_juart_rx/dout_vld
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_rx/data_reg
add wave -noupdate -divider {JUART RX}
add wave -noupdate -format Logic /tb_juart_rx/inst_juart_rx/bit_sample
add wave -noupdate -format Literal -radix unsigned /tb_juart_rx/inst_juart_rx/bit_count
add wave -noupdate -format Literal -radix unsigned /tb_juart_rx/inst_juart_rx/shiftreg
add wave -noupdate -format Literal /tb_juart_rx/inst_juart_rx/sample_count
add wave -noupdate -format Logic /tb_juart_rx/inst_juart_rx/is_idle
add wave -noupdate -format Literal /tb_juart_rx/inst_juart_rx/state
add wave -noupdate -format Literal /tb_juart_rx/inst_juart_rx/state_next
add wave -noupdate -format Literal /tb_juart_rx/inst_juart_rx/idle_count
add wave -noupdate -format Logic /tb_juart_rx/inst_juart_rx/bit_count_rst
add wave -noupdate -format Logic /tb_juart_rx/inst_juart_rx/sample_count_rst
add wave -noupdate -format Logic /tb_juart_rx/inst_juart_rx/data_strobe
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_rx/data_out
add wave -noupdate -format Logic /tb_juart_rx/dut/bit_sample
add wave -noupdate -format Literal -radix unsigned /tb_juart_rx/dut/bit_count
add wave -noupdate -format Literal -radix unsigned /tb_juart_rx/dut/shiftreg
add wave -noupdate -format Literal /tb_juart_rx/dut/sample_count
add wave -noupdate -format Logic /tb_juart_rx/dut/is_idle
add wave -noupdate -format Literal /tb_juart_rx/dut/state
add wave -noupdate -format Literal /tb_juart_rx/dut/state_next
add wave -noupdate -format Literal /tb_juart_rx/dut/idle_count
add wave -noupdate -format Logic /tb_juart_rx/dut/bit_count_rst
add wave -noupdate -format Logic /tb_juart_rx/dut/sample_count_rst
add wave -noupdate -format Logic /tb_juart_rx/dut/dout_vld
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_rx/dout
TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 1} {5936632 ps} 0}
configure wave -namecolwidth 150
lib/uart/sim/tb_juart_tx.wdo
+10 -10
View File
@@ -3,18 +3,18 @@ quietly WaveActivateNextPane {} 0
add wave -noupdate -format Logic /tb_juart_tx/rst
add wave -noupdate -format Logic /tb_juart_tx/clk
add wave -noupdate -format Logic /tb_juart_tx/en_16_x_baud
add wave -noupdate -format Logic /tb_juart_tx/send_character
add wave -noupdate -format Logic /tb_juart_tx/serial_out
add wave -noupdate -format Logic /tb_juart_tx/we
add wave -noupdate -format Logic /tb_juart_tx/ser_out
add wave -noupdate -format Logic /tb_juart_tx/tx_complete
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/data_in
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/din
add wave -noupdate -divider JUART_TX
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/inst_juart_tx/shiftreg
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/inst_juart_tx/dinreg
add wave -noupdate -format Logic /tb_juart_tx/inst_juart_tx/start
add wave -noupdate -format Logic /tb_juart_tx/inst_juart_tx/busy
add wave -noupdate -format Logic /tb_juart_tx/inst_juart_tx/shift_enable
add wave -noupdate -format Literal -radix unsigned /tb_juart_tx/inst_juart_tx/shift_enable_count
add wave -noupdate -format Literal -radix unsigned /tb_juart_tx/inst_juart_tx/bit_count
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/dut/shiftreg
add wave -noupdate -format Literal -radix hexadecimal /tb_juart_tx/dut/dinreg
add wave -noupdate -format Logic /tb_juart_tx/dut/start
add wave -noupdate -format Logic /tb_juart_tx/dut/busy
add wave -noupdate -format Logic /tb_juart_tx/dut/shift_enable
add wave -noupdate -format Literal -radix unsigned /tb_juart_tx/dut/shift_enable_count
add wave -noupdate -format Literal -radix unsigned /tb_juart_tx/dut/bit_count
TreeUpdate [SetDefaultTree]
WaveRestoreCursors {{Cursor 1} {9812114 ps} 0}
configure wave -namecolwidth 150
lib/uart/tb_juart_rx.vhd
+15 -15
View File
@@ -37,9 +37,9 @@ architecture behave of tb_juart_rx is
signal rst : std_logic := '1';
signal clk : std_logic := '1';
signal en_16_x_baud : std_logic := '1';
signal serial_in : std_logic := '1';
signal data_strobe : std_logic;
signal data_out : unsigned(7 downto 0);
signal ser_in : std_logic := '1';
signal dout_vld : std_logic;
signal dout : unsigned(7 downto 0);
signal serial_word : unsigned(7 downto 0) := X"AA";
signal baud_count : unsigned(15 downto 0);
@@ -47,15 +47,15 @@ architecture behave of tb_juart_rx is
signal data_reg : unsigned(7 downto 0);
begin
inst_juart_rx : entity work.juart_rx
dut : entity work.juart_rx
PORT MAP
(
rst => rst,
clk => clk,
en_16_x_baud => en_16_x_baud,
data_strobe => data_strobe,
data_out => data_out,
serial_in => serial_in
dout_vld => dout_vld,
dout => dout,
ser_in => ser_in
);
@@ -67,8 +67,8 @@ CLK_GEN: process
PROC_DATAREG: process
begin
wait until rising_edge(clk) and data_strobe = '1';
data_reg <= data_out;
wait until rising_edge(clk) and dout_vld = '1';
data_reg <= dout;
end process;
baud_timer:
@@ -99,23 +99,23 @@ STIMULUS: process
serial_word <= X"AA";
wait for 16*baud_div*CLK_PERIOD;
serial_in <= '0';
ser_in <= '0';
wait for 16*baud_div*CLK_PERIOD;
for i in serial_word'length-1 downto 0 loop
serial_in <= serial_word(i);
ser_in <= serial_word(i);
wait for 16*baud_div*CLK_PERIOD;
end loop;
serial_in <= '1';
ser_in <= '1';
wait for 16*baud_div*CLK_PERIOD;
serial_word <= X"55";
serial_in <= '0';
ser_in <= '0';
wait for 16*baud_div*CLK_PERIOD;
for i in serial_word'length-1 downto 0 loop
serial_in <= serial_word(i);
ser_in <= serial_word(i);
wait for 16*baud_div*CLK_PERIOD;
end loop;
serial_in <= '1';
ser_in <= '1';
wait;
end process;
lib/uart/tb_juart_tx.vhd
+16 -16
View File
@@ -37,25 +37,25 @@ architecture behave of tb_juart_tx is
signal rst : std_logic := '1';
signal clk : std_logic := '1';
signal en_16_x_baud : std_logic := '1';
signal send_character : std_logic := '0';
signal serial_out : std_logic;
signal we : std_logic := '0';
signal ser_out : std_logic;
signal Tx_complete : std_logic;
signal data_in : unsigned(7 downto 0) := (others => '0');
signal din : unsigned(7 downto 0) := (others => '0');
signal baud_count : unsigned(15 downto 0);
signal baud_reg : unsigned(15 downto 0) := to_unsigned(BAUD_DIV-1, baud_count'length);
begin
inst_juart_tx : entity work.juart_tx
dut : entity work.juart_tx
PORT MAP
(
rst => rst,
clk => clk,
we => we,
din => din,
en_16_x_baud => en_16_x_baud,
send_character => send_character,
Tx_complete => Tx_complete,
data_in => data_in,
serial_out => serial_out
ser_out => ser_out
);
@@ -92,22 +92,22 @@ STIMULUS: process
rst <= '0';
wait for 3*CLK_PERIOD;
wait until rising_edge(clk);
data_in <= X"A5";
din <= X"A5";
wait until rising_edge(clk) and Tx_complete = '1';
send_character <= '1';
we <= '1';
wait until rising_edge(clk) and Tx_complete = '0';
send_character <= '0';
we <= '0';
wait until rising_edge(clk) and Tx_complete = '1';
data_in <= X"AA";
din <= X"AA";
wait until rising_edge(clk) and Tx_complete = '1';
send_character <= '1';
we <= '1';
wait until rising_edge(clk) and Tx_complete = '0';
send_character <= '0';
data_in <= X"55";
we <= '0';
din <= X"55";
wait until rising_edge(clk) and Tx_complete = '1';
send_character <= '1';
we <= '1';
wait until rising_edge(clk) and Tx_complete = '0';
send_character <= '0';
we <= '0';
wait;
end process;