| Line 274... |
Line 274... |
signal umem_wr : std_logic;
|
signal umem_wr : std_logic;
|
signal umem_val : std_logic;
|
signal umem_val : std_logic;
|
signal umem_ack : std_logic;
|
signal umem_ack : std_logic;
|
signal umem_cmd : std_logic;
|
signal umem_cmd : std_logic;
|
signal enable_4meg: std_logic;
|
signal enable_4meg: std_logic;
|
|
signal dongle_con_n : std_logic;
|
|
|
constant dongle_ver : std_logic_vector(15 downto 0):=x"8605";
|
constant dongle_ver : std_logic_vector(15 downto 0):=x"8605";
|
--END USB signals
|
--END USB signals
|
|
|
begin
|
begin
|
|
|
--GPIO PINS START
|
--GPIO PINS START
|
fl_sts_en <='Z';
|
fl_sts_en <='Z';
|
hdr(1) <= fl_sts when resetn='1' else
|
|
'0';
|
hdr(1) <= dongle_con_n;
|
|
--hdr(1) <= fl_sts when resetn='1' else
|
|
-- '0';
|
|
|
--when jumper on then mem read and firmware read enabled else only firmware read
|
--when jumper on then mem read and firmware read enabled else only firmware read
|
hdr(0) <= 'Z';
|
hdr(0) <= 'Z';
|
lena_mem_r <= not hdr(0); -- disabled if jumper is not on header pins 1-2
|
lena_mem_r <= not hdr(0); -- disabled if jumper is not on header pins 1-2
|
|
|
-- jumper on pins 5,6 then postcode only mode (no mem device)
|
-- jumper on pins 5,6 then postcode only mode (no mem device)
|
hdr(2) <= '0'; --create low pin for jumper pair 5-6 (this pin is 6 on J1 header)
|
hdr(2) <= '0'; --create low pin for jumper pair 5-6 (this pin is 6 on J1 header)
|
lena_reads <= hdr(3) and mem_idle; -- disabled if jumper is on (jumper makes it a postcode only device) paired with hdr(2) pins 5,6 and when usb control is not accessing flash
|
lena_reads <= hdr(3) and mem_idle and (not dongle_con_n); -- disabled if jumper is on (jumper makes it a postcode only device) paired with hdr(2) pins 5,6 and when usb control is not accessing flash
|
|
|
|
|
-- when jumper on pins 7,8 then post code capture mode enabled
|
-- when jumper on pins 7,8 then post code capture mode enabled
|
hdr(4)<= '0';
|
hdr(4)<= '0';
|
dbg_usb_mode_en <= not hdr(5); --weak pullup on hdr(5) paired with hdr(4)
|
dbg_usb_mode_en <= not hdr(5); --weak pullup on hdr(5) paired with hdr(4)
|
| Line 425... |
Line 428... |
if lreset_n='0' then
|
if lreset_n='0' then
|
lpc_debug(7 downto 0)<=(others=>'0');
|
lpc_debug(7 downto 0)<=(others=>'0');
|
c33_dbg_addr_d <=(others=>'0');
|
c33_dbg_addr_d <=(others=>'0');
|
enable_4meg <='0';
|
enable_4meg <='0';
|
c33_lpc_wr <='0';
|
c33_lpc_wr <='0';
|
|
dongle_con_n <='0'; -- pin 3 in GPIO make it toggleable
|
elsif lclk'event and lclk = '1' then -- rising clock edge
|
elsif lclk'event and lclk = '1' then -- rising clock edge
|
c33_lpc_wr <= lpc_wr;
|
c33_lpc_wr <= lpc_wr;
|
if c33_lpc_wr='0' and lpc_wr='1' then
|
if c33_lpc_wr='0' and lpc_wr='1' then
|
c33_dbg_addr_d <= lpc_addr(7 downto 0);
|
c33_dbg_addr_d <= lpc_addr(7 downto 0);
|
lpc_debug(7 downto 0)<= lpc_data_o;
|
lpc_debug(7 downto 0)<= lpc_data_o;
|
if lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"4F" then --Flash 4 Mega enable (LSN is first MSN is second)
|
if lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"F4" then --Flash 4 Mega enable (LSN is first MSN is second)
|
enable_4meg <='1';
|
enable_4meg <='1';
|
elsif lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"1F" then --Flash 1 Mega enalbe
|
elsif lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"F1" then --Flash 1 Mega enalbe
|
enable_4meg <='0';
|
enable_4meg <='0';
|
|
elsif lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"D1" then --Set Dongle not attached signal
|
|
dongle_con_n <='1'; -- pin 3 in GPIO make it 1
|
|
elsif lpc_addr(7 downto 0)=x"88" and lpc_data_o=x"D0" then --Set Dongle attached signal
|
|
dongle_con_n <='0'; -- pin 3 in GPIO make it 1
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
end if;
|
end process LATCHled;
|
end process LATCHled;
|
|
|
