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, 35 deletions

diff --git a/examples/icestick/rotate2.vhdl b/examples/icestick/rotate2.vhdl
deleted file mode 100644
index e51ec6c..0000000
--- a/examples/icestick/rotate2.vhdl
+++ /dev/null
@@ -1,35 +0,0 @@
-architecture rotate2 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, led2, led3, led4, led5) <= unsigned'("10001");
-      elsif count = 1 then
-        (led1, led2, led3, led4, led5) <= unsigned'("01000");
-      elsif count = 2 then
-        (led1, led2, led3, led4, led5) <= unsigned'("00101");
-      else
-        (led1, led2, led3, led4, led5) <= unsigned'("00010");
-      end if;
-    end if;
-  end process;
-end rotate2;