avr/flake.nix

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{
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description = "AVR";
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inputs = {
nixpkgs.url = "nixpkgs/nixos-21.11";
};
outputs = { self, nixpkgs }:
let
version = builtins.string 0 8 self.lastModifiedDate;
supportedSystems = [ "x86_64-linux" "avr-none" ];
mcu_cflags = { mcu, chip_select, f_cpu }: ''-O -finline-functions -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Werror -Wstrict-prototypes -DF_CPU=${f_cpu} -std=gnu99 -D__${chip_select}__=1 -mmcu=${mcu}'';
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attiny85 = { mcu = "attiny85"; chip_select = "AVR_ATtiny85"; f_cpu = "8000000"; };
atmega32u4 = { mcu = "atmega32u4"; chip_select = "AVR_ATmega32u4"; f_cpu = "8000000"; };
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mkLibrary = { pkgs, gcc, cflags, pname, psrc, pbuildInputs ? [] }:
pkgs.stdenv.mkDerivation rec {
name = pname;
src = psrc;
buildInputs = pbuildInputs;
include_dirs = pkgs.lib.concatStringsSep " " (map (dir: "-I${dir}/include") buildInputs);
object_files = pkgs.lib.concatStringsSep " " (map (dir: "${dir}/*.o") buildInputs);
dontUnpack = true;
dontConfigure = true;
buildPhase = ''
for source in ${src}/*.c; do
if [ -e $source ]; then
${gcc} ${cflags} ${include_dirs} -c $source
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fi
done
cp ${src}/*.h . || true
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'';
installPhase = ''
mkdir -p $out/include $out/lib
cp *.h $out/include || true
cp *.o $out/lib || true
'';
};
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mkProgram = { pkgs, gcc, cflags, pname, psrc, pbuildInputs ? [], avr ? false }:
let
AVR = if avr == true then "1" else "";
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in pkgs.stdenv.mkDerivation rec {
name = pname;
src = psrc;
buildInputs = pbuildInputs;
include_dirs = pkgs.lib.concatStringsSep " " (map (dir: "-I${dir}/include") buildInputs);
object_files = pkgs.lib.concatStringsSep " " (map (dir: "${dir}/lib/*.o") buildInputs);
dontUnpack = true;
dontConfigure = true;
buildPhase = ''
for source in ${src}/*.c; do
if [ -e $source ]; then
${gcc} ${cflags} ${include_dirs} -c $source
fi
done
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${gcc} -o ${name}.elf ${cflags} ${object_files} *.o
if $AVR; then
$OBJCOPY -O ihex ${name}.elf ${name}.hex
fi
'';
installPhase = ''
mkdir -p $out/bin
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cp ${name}.elf ${name}.hex $out/bin
'';
};
in rec
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{
defaultPackage."x86_64-linux" =
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
avr = pkgs.pkgsCross.avr.buildPackages;
in pkgs.symlinkJoin {
name = "avr-monorepo";
paths = [
(packages."x86_64-linux"."prime-tx" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; })
(packages."x86_64-linux"."radio-rx" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; })
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(packages."x86_64-linux"."lantern" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; avr = true; })
];
};
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packages."x86_64-linux"."dio" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "dio";
psrc = ./dio;
};
packages."x86_64-linux"."animation" =
{ gcc, cflags }:
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "animation";
psrc = ./animation;
};
packages."x86_64-linux"."sk9822" =
{ gcc, cflags }:
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "sk9822";
psrc = ./sk9822;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
];
};
packages."x86_64-linux"."shift-register" =
{ gcc, cflags }:
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
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in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "shift-register";
psrc = ./shift-register;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
];
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};
packages."x86_64-linux"."spi" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "spi";
psrc = ./spi;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
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];
};
packages."x86_64-linux"."rfm" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "rfm";
psrc = ./rfm69hcw;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
(packages."x86_64-linux"."spi" { inherit gcc cflags; })
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];
};
packages."x86_64-linux"."display" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkLibrary {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "display";
psrc = ./display;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
(packages."x86_64-linux"."shift-register" { inherit gcc cflags; })
];
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};
packages."x86_64-linux"."prime-tx" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkProgram {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "prime-tx";
psrc = ./prime-tx;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
(packages."x86_64-linux"."spi" { inherit gcc cflags; })
(packages."x86_64-linux"."shift-register" { inherit gcc cflags; })
(packages."x86_64-linux"."rfm" { inherit gcc cflags; })
(packages."x86_64-linux"."display" { inherit gcc cflags; })
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];
};
packages."x86_64-linux"."radio-rx" =
{ gcc, cflags }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkProgram {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "radio-rx";
psrc = ./radio-rx;
pbuildInputs = [
(packages."x86_64-linux"."dio" { inherit gcc cflags; })
(packages."x86_64-linux"."spi" { inherit gcc cflags; })
(packages."x86_64-linux"."shift-register" { inherit gcc cflags; })
(packages."x86_64-linux"."rfm" { inherit gcc cflags; })
(packages."x86_64-linux"."display" { inherit gcc cflags; })
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];
};
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packages."x86_64-linux"."lantern_" =
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
avr = pkgs.pkgsCross.avr.buildPackages;
in packages."x86_64-linux"."lantern" { gcc = "${avr.gcc}/bin/avr-gcc"; cflags = mcu_cflags atmega32u4; };
packages."x86_64-linux"."lantern" =
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{ gcc, cflags, avr }:
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let
pkgs = import nixpkgs { system = "x86_64-linux"; };
in mkProgram {
pkgs = pkgs;
gcc = gcc;
cflags = cflags;
pname = "lantern";
psrc = ./lantern;
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inherit avr;
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pbuildInputs = [
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(packages."x86_64-linux"."animation" { inherit gcc cflags; })
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(packages."x86_64-linux"."dio" { inherit gcc cflags; })
(packages."x86_64-linux"."display" { inherit gcc cflags; })
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(packages."x86_64-linux"."shift-register" { inherit gcc cflags; })
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(packages."x86_64-linux"."sk9822" { inherit gcc cflags; })
];
};
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devShell."x86_64-linux" =
let
pkgs = import nixpkgs { system = "x86_64-linux"; };
avr = with pkgs.pkgsCross.avr.buildPackages; [
binutils
gcc
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gdb
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avrdude
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simavr
gtkwave
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];
in
pkgs.mkShell {
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name = "avr-shell";
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buildInputs = avr;
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GCC = pkgs.pkgsCross.avr.buildPackages.gcc;
SIMAVR = pkgs.pkgsCross.avr.buildPackages.simavr;
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};
};
}