Improve examples for Lattice iCEstick

- move "leds" examples to subdirectory
- add Makefile
- add *.json files to .gitignore
- adjust README.md and fix some typos

1 files changed, 0 insertions, 51 deletions

diff --git a/examples/icestick/rotate1.vhdl b/examples/icestick/rotate1.vhdl
deleted file mode 100644
index 34c7afd..0000000
--- a/examples/icestick/rotate1.vhdl
+++ /dev/null
@@ -1,51 +0,0 @@
-architecture rotate1 of leds is
-  signal clk_4hz: std_logic;
-begin
-  process (clk)
-    --  3_000_000 is 0x2dc6c0
-    variable counter : unsigned (23 downto 0);
-  begin
-    if rising_edge(clk) then
-      if counter = 2_999_999 then
-        counter := x"000000";
-        clk_4hz <= '1';
-      else
-        counter := counter + 1;
-        clk_4hz <= '0';
-      end if;
-    end if;
-  end process;
-
-  process (clk)
-    variable count : unsigned (1 downto 0);
-  begin
-    if rising_edge(clk) and clk_4hz = '1' then
-      count := count + 1;
-      if count = 0 then
-        led1 <= '1';
-        led2 <= '0';
-        led3 <= '0';
-        led4 <= '0';
-        led5 <= '1';
-      elsif count = 1 then
-        led1 <= '0';
-        led2 <= '1';
-        led3 <= '0';
-        led4 <= '0';
-        led5 <= '0';
-      elsif count = 2 then
-        led1 <= '0';
-        led2 <= '0';
-        led3 <= '1';
-        led4 <= '0';
-        led5 <= '1';
-      else
-        led1 <= '0';
-        led2 <= '0';
-        led3 <= '0';
-        led4 <= '1';
-        led5 <= '0';
-      end if;
-    end if;
-  end process;
-end rotate1;