makefile: make ghdl error on warnings

vhdl: use UDP packet length
vhdl: only run encoders once all pixels are received
2022-06-07 07:34:09 +02:00 · 2022-06-07 07:34:09 +02:00 · 2022-06-07 07:34:09 +02:00 · 2022-06-07 07:34:09 +02:00 · 2022-06-07 07:34:09 +02:00 · 2022-06-07 07:34:09 +02:00
1 changed files with 23 additions and 0 deletions
--- a/vhdl/util.vhdl
+++ b/vhdl/util.vhdl
@ -0,0 +1,23 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+package util is
+	function flip_endianness(val : in std_logic_vector) return std_logic_vector;
+end package;
+
+package body util is
+	function flip_endianness(val : in std_logic_vector) return std_logic_vector is
+		constant BYTES : natural := val'length / 8;
+		variable ret : std_logic_vector(val'length-1 downto 0);
+	begin
+		assert val'length mod 8 = 0
+			report "length of vector not a multiple of 8"
+			severity failure;
+
+		for i in 0 to BYTES-1 loop
+			ret((BYTES-i)*8 - 1 downto (BYTES-i-1) * 8) := val((i+1)*8 - 1 downto i*8);
+		end loop;
+
+		return ret;
+	end function;
+end package body;
Author	SHA1	Message	Date
Xiretza	6ff0e77d38	makefile: make ghdl error on warnings	2022-06-07 07:34:09 +02:00
Xiretza	645a838a73	vhdl: use UDP packet length	2022-06-07 07:34:09 +02:00
Xiretza	70a7b0520a	vhdl: only run encoders once all pixels are received	2022-06-07 07:34:09 +02:00
Xiretza	9ca64a7d4d	Update ws2812 submodule	2022-06-07 07:34:09 +02:00
Xiretza	0f497e76e8	vhdl: implement bounds checking for strand number	2022-06-07 07:34:09 +02:00
Xiretza	fcfa9eb7d0	vhdl: workaround ghdl#2080 https://github.com/ghdl/ghdl/issues/2080	2022-06-07 07:34:09 +02:00
Xiretza	3c5c3a4555	vhdl: use big-endian network byte order liteeth splits the rx data stream into 4-byte chunks and interprets them as little-endian 32-bit vecs; similar for the other direction.	2022-06-07 07:34:09 +02:00