use ieee.numeric_std.all;
use work.util.all;
-entity rpi_mc_simple_dc is
+entity rpi_pmsm_control is
generic(
pwm_width : natural:=11
);
-- Unused terminal to keep design tools silent
dummy_unused : out std_logic
);
-end rpi_mc_simple_dc;
+end rpi_pmsm_control;
-architecture behavioral of rpi_mc_simple_dc is
+architecture behavioral of rpi_pmsm_control is
attribute syn_noprune :boolean;
attribute syn_preserve :boolean;
attribute syn_keep :boolean;
attribute syn_hier :boolean;
+
-- Actel lib
- -- component pll50to200
- -- port (
- -- powerdown, clka: in std_logic;
- -- lock, gla: out std_logic
- -- );
- -- end component;
+ component pll50to200
+ port (
+ powerdown, clka: in std_logic;
+ lock, gla: out std_logic
+ );
+ end component;
component CLKINT
port (A: in std_logic; Y: out std_logic);
signal adc_reset : std_logic;
signal adc_channels: std_logic_vector(71 downto 0);
signal adc_m_count: std_logic_vector(8 downto 0);
-
+
+ --clock signals for logic and master fail monitoring
+ signal gpio_clk: std_logic;
+ signal pll_clkin, pll_clkout, pll_lock: std_logic;
+ signal clkmon_dly1, clkmon_dly2: std_logic;
+ signal clkmon_fail, clkmon_fail_next: std_logic;
+ signal clkmon_wdg: integer range 0 to 6;
+ signal reset_sync, reset_async: std_logic;
+ signal failsafe, next_failsafe: std_logic;
+
+ --RPi SPI interface signals named aliases
+ signal spi_clk, spi_ce, spi_mosi, spi_miso : std_logic;
signal spiclk_old: std_logic_vector(1 downto 0); --pro detekci hrany SPI hodin
+
--signal pwm_in, pwm_dir_in: std_logic;
- signal gpio_clk: std_logic;
signal dat_reg : STD_LOGIC_VECTOR (127 downto 0); --shift register for spi
signal position: std_logic_vector(31 downto 0); --pozice z qcounteru
signal index_position: std_logic_vector(11 downto 0); --pozice irc_i
signal income_data_valid: std_logic;
signal clk_4M17: std_logic;
-
-
+
+ -- irc signals processing
+ signal irc_i_prev: std_logic;
-- attribute syn_noprune of gpio2 : signal is true;
-- attribute syn_preserve of gpio2 : signal is true;
y => gpio_clk
);
+ pll: pll50to200
+ port map (
+ powerdown => '1',
+ clka => pll_clkin,
+ gla => pll_clkout,
+ lock => pll_lock);
+
+ -- the failasfe signal from communication block if CRC is used
+ next_failsafe <= '0';
+
+ reset_async <= not pll_lock or clkmon_fail;
+
+ pll_clkin <= gpio_clk;
qcount: qcounter
port map (
clock => gpio_clk, --50 Mhz clk from gpclk on raspberry
sync => pwm_sync, --counter restarts
data_valid => income_data_valid,
- failsafe => '0',
+ failsafe => failsafe,
--
-- pwm config bits & match word
--
);
-
-
- -- pll: pll50to200
- -- port map (
- -- powerdown => '1',
- -- clka => pll_clkin,
- -- gla => pll_clkout,
- -- lock => pll_lock);
- -- -- reset <= not pll_lock;
- -- reset <= '0'; -- TODO: apply reset for good failsafe
- -- upon power-on
- -- clock <= clkm;
-
- dummy_unused <= gpio2 and gpio3 and gpio4 and
+ dummy_unused <= gpio2 and gpio3 and
gpio5 and gpio6 and
gpio12 and gpio13 and gpio14 and
gpio15 and gpio16 and gpio19 and
dip_sw(1) and dip_sw(2) and dip_sw(3) and
irc_a and irc_b and
gpio17 and gpio18 and gpio27 and gpio22 and gpio23 and gpio24 and gpio25 and
- gpio8 and gpio11 and gpio7 and gpio10 and
+ gpio8 and
ext_scs1 and ext_scs2 and ext_miso and ext_mosi and ext_sclk and ext_scs0;
rs485_txd <= '1';
rs485_dir <= '0';
+ spi_clk <= gpio11;
+ spi_ce <= gpio7;
+ spi_mosi <= gpio10;
+ gpio9 <= spi_miso;
pwm(1) <= pwm_sig(1) and dip_sw(1);
pwm(2) <= pwm_sig(2) and dip_sw(2);
process
begin
- wait until (irc_i'event and irc_i='1');
- index_position(11 downto 0)<=position(11 downto 0);
+ wait until (gpio_clk'event and gpio_clk='1');
+ if irc_i_prev = '0' and irc_i = '1' then
+ index_position(11 downto 0)<=position(11 downto 0);
+ end if;
+ irc_i_prev<=irc_i;
end process;
process
wait until (gpio_clk'event and gpio_clk='1');
--SCLK edge detection
- spiclk_old(0)<=gpio11;
+ spiclk_old(0)<=spi_clk;
spiclk_old(1)<=spiclk_old(0);
--SS edge detection
- ce0_old(0)<=gpio7;
+ ce0_old(0)<=spi_ce;
ce0_old(1)<=ce0_old(0);
if (spiclk_old="01") then --rising edge, faze cteni
- if (gpio7 = '0') then -- SPI CS must be selected
+ if (spi_ce = '0') then -- SPI CS must be selected
-- shift serial data into dat_reg on each rising edge
-- of SCK, MSB first
- dat_reg(127 downto 0) <= dat_reg(126 downto 0) & gpio10;
+ dat_reg(127 downto 0) <= dat_reg(126 downto 0) & spi_mosi;
end if;
elsif (spiclk_old="10" ) then --falling edge, faze zapisu
- if (gpio7 = '0') then
- gpio9 <= dat_reg(127); --zapisujeme nejdriv MSB
+ if (spi_ce = '0') then
+ spi_miso <= dat_reg(127); --zapisujeme nejdriv MSB
end if;
end if;
income_data_valid<='1';
end if;
end process;
-
+
+ clock_monitor: process (pll_clkout, gpio_clk, clkmon_dly1, clkmon_wdg, clkmon_fail_next)
+ begin
+ if pll_clkout'event and pll_clkout = '1' then
+ clkmon_dly1 <= gpio_clk;
+ clkmon_dly2 <= clkmon_dly1;
+ if clkmon_dly1 = '0' and clkmon_dly2 = '1' then
+ clkmon_wdg <= 6;
+ clkmon_fail_next <= '0';
+ elsif clkmon_wdg > 0 then
+ clkmon_wdg <= clkmon_wdg - 1;
+ clkmon_fail_next <= '0';
+ else
+ clkmon_wdg <= 0;
+ clkmon_fail_next <= '1';
+ end if;
+ clkmon_fail <= clkmon_fail_next;
+ end if;
+ end process;
+
+ async_rst: process (gpio_clk, reset_async, reset_sync)
+ begin
+ if reset_async = '1' then
+ failsafe <= '1';
+ elsif gpio_clk'event and gpio_clk = '1' then
+ failsafe <= next_failsafe or reset_sync;
+ end if;
+ end process;
+
+ sync_rst: process (gpio_clk, reset_async)
+ begin
+ if gpio_clk'event and gpio_clk = '1' then
+ reset_sync <= reset_async;
+ end if;
+ end process;
+
end behavioral;
projects / fpga / rpi-motor-control.git / blobdiff