diff --git a/.gitignore b/.gitignore index ef81b1e..2125e2e 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,2 @@ -/.venv/ +.direnv/ +.devenv/ diff --git a/flake.lock b/flake.lock new file mode 100644 index 0000000..7de3ddf --- /dev/null +++ b/flake.lock @@ -0,0 +1,524 @@ +{ + "nodes": { + "cachix": { + "inputs": { + "devenv": "devenv_2", + "flake-compat": [ + "devenv", + "flake-compat" + ], + "nixpkgs": [ + "devenv", + "nixpkgs" + ], + "pre-commit-hooks": [ + "devenv", + "pre-commit-hooks" + ] + }, + "locked": { + "lastModified": 1712055811, + "narHash": "sha256-7FcfMm5A/f02yyzuavJe06zLa9hcMHsagE28ADcmQvk=", + "owner": "cachix", + "repo": "cachix", + "rev": "02e38da89851ec7fec3356a5c04bc8349cae0e30", + "type": "github" + }, + "original": { + "owner": "cachix", + "repo": "cachix", + "type": "github" + } + }, + "devenv": { + "inputs": { + "cachix": "cachix", + "flake-compat": "flake-compat_2", + "nix": "nix_2", + "nixpkgs": [ + "nixpkgs" + ], + "pre-commit-hooks": "pre-commit-hooks" + }, + "locked": { + "lastModified": 1715246369, + "narHash": "sha256-gpdfUGNLXr64y+EAUMA3YP/sUO0wBVthrlPIm2PDJpw=", + "owner": "cachix", + "repo": "devenv", + "rev": "8f089ccfdef53f2ea5e0bfabe25dba4769f5390f", + "type": "github" + }, + "original": { + "owner": "cachix", + "repo": "devenv", + "type": "github" + } + }, + "devenv_2": { + "inputs": { + "flake-compat": [ + "devenv", + "cachix", + "flake-compat" + ], + "nix": "nix", + "nixpkgs": "nixpkgs", + "poetry2nix": "poetry2nix", + "pre-commit-hooks": [ + "devenv", + "cachix", + "pre-commit-hooks" + ] + }, + "locked": { + "lastModified": 1708704632, + "narHash": "sha256-w+dOIW60FKMaHI1q5714CSibk99JfYxm0CzTinYWr+Q=", + "owner": "cachix", + "repo": "devenv", + "rev": "2ee4450b0f4b95a1b90f2eb5ffea98b90e48c196", + "type": "github" + }, + "original": { + "owner": "cachix", + "ref": "python-rewrite", + "repo": "devenv", + "type": "github" + } + }, + "devshell": { + "inputs": { + "flake-utils": "flake-utils_3", + "nixpkgs": [ + "nixpkgs" + ] + }, + "locked": { + "lastModified": 1713532798, + "narHash": "sha256-wtBhsdMJA3Wa32Wtm1eeo84GejtI43pMrFrmwLXrsEc=", + "owner": "numtide", + "repo": "devshell", + "rev": "12e914740a25ea1891ec619bb53cf5e6ca922e40", + "type": "github" + }, + "original": { + "owner": "numtide", + "repo": "devshell", + "type": "github" + } + }, + "flake-compat": { + "flake": false, + "locked": { + "lastModified": 1673956053, + "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=", + "owner": "edolstra", + "repo": "flake-compat", + "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9", + "type": "github" + }, + "original": { + "owner": "edolstra", + "repo": "flake-compat", + "type": "github" + } + }, + "flake-compat_2": { + "flake": false, + "locked": { + "lastModified": 1696426674, + "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=", + "owner": "edolstra", + "repo": "flake-compat", + "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33", + "type": "github" + }, + "original": { + "owner": "edolstra", + "repo": "flake-compat", + "type": "github" + } + }, + "flake-parts": { + "inputs": { + "nixpkgs-lib": "nixpkgs-lib" + }, + "locked": { + "lastModified": 1714641030, + "narHash": "sha256-yzcRNDoyVP7+SCNX0wmuDju1NUCt8Dz9+lyUXEI0dbI=", + "owner": "hercules-ci", + "repo": "flake-parts", + "rev": "e5d10a24b66c3ea8f150e47dfdb0416ab7c3390e", + "type": "github" + }, + "original": { + "owner": "hercules-ci", + "repo": "flake-parts", + "type": "github" + } + }, + "flake-utils": { + "inputs": { + "systems": "systems" + }, + "locked": { + "lastModified": 1689068808, + "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=", + "owner": "numtide", + "repo": "flake-utils", + "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4", + "type": "github" + }, + "original": { + "owner": "numtide", + "repo": "flake-utils", + "type": "github" + } + }, + "flake-utils_2": { + "inputs": { + "systems": "systems_2" + }, + "locked": { + "lastModified": 1710146030, + "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=", + "owner": "numtide", + "repo": "flake-utils", + "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a", + "type": "github" + }, + "original": { + "owner": "numtide", + "repo": "flake-utils", + "type": "github" + } + }, + "flake-utils_3": { + "inputs": { + "systems": "systems_3" + }, + "locked": { + "lastModified": 1701680307, + "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=", + "owner": "numtide", + "repo": "flake-utils", + "rev": "4022d587cbbfd70fe950c1e2083a02621806a725", + "type": "github" + }, + "original": { + "owner": "numtide", + "repo": "flake-utils", + "type": "github" + } + }, + "gitignore": { + "inputs": { + "nixpkgs": [ + "devenv", + "pre-commit-hooks", + "nixpkgs" + ] + }, + "locked": { + "lastModified": 1709087332, + "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=", + "owner": "hercules-ci", + "repo": "gitignore.nix", + "rev": "637db329424fd7e46cf4185293b9cc8c88c95394", + "type": "github" + }, + "original": { + "owner": "hercules-ci", + "repo": "gitignore.nix", + "type": "github" + } + }, + "nix": { + "inputs": { + "flake-compat": "flake-compat", + "nixpkgs": [ + "devenv", + "cachix", + "devenv", + "nixpkgs" + ], + "nixpkgs-regression": "nixpkgs-regression" + }, + "locked": { + "lastModified": 1712911606, + "narHash": "sha256-BGvBhepCufsjcUkXnEEXhEVjwdJAwPglCC2+bInc794=", + "owner": "domenkozar", + "repo": "nix", + "rev": "b24a9318ea3f3600c1e24b4a00691ee912d4de12", + "type": "github" + }, + "original": { + "owner": "domenkozar", + "ref": "devenv-2.21", + "repo": "nix", + "type": "github" + } + }, + "nix-github-actions": { + "inputs": { + "nixpkgs": [ + "devenv", + "cachix", + "devenv", + "poetry2nix", + "nixpkgs" + ] + }, + "locked": { + "lastModified": 1688870561, + "narHash": "sha256-4UYkifnPEw1nAzqqPOTL2MvWtm3sNGw1UTYTalkTcGY=", + "owner": "nix-community", + "repo": "nix-github-actions", + "rev": "165b1650b753316aa7f1787f3005a8d2da0f5301", + "type": "github" + }, + "original": { + "owner": "nix-community", + "repo": "nix-github-actions", + "type": "github" + } + }, + "nix_2": { + "inputs": { + "flake-compat": [ + "devenv", + "flake-compat" + ], + "nixpkgs": [ + "devenv", + "nixpkgs" + ], + "nixpkgs-regression": "nixpkgs-regression_2" + }, + "locked": { + "lastModified": 1712911606, + "narHash": "sha256-BGvBhepCufsjcUkXnEEXhEVjwdJAwPglCC2+bInc794=", + "owner": "domenkozar", + "repo": "nix", + "rev": "b24a9318ea3f3600c1e24b4a00691ee912d4de12", + "type": "github" + }, + "original": { + "owner": "domenkozar", + "ref": "devenv-2.21", + "repo": "nix", + "type": "github" + } + }, + "nixpkgs": { + "locked": { + "lastModified": 1692808169, + "narHash": "sha256-x9Opq06rIiwdwGeK2Ykj69dNc2IvUH1fY55Wm7atwrE=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "9201b5ff357e781bf014d0330d18555695df7ba8", + "type": "github" + }, + "original": { + "owner": "NixOS", + "ref": "nixpkgs-unstable", + "repo": "nixpkgs", + "type": "github" + } + }, + "nixpkgs-lib": { + "locked": { + "lastModified": 1714640452, + "narHash": "sha256-QBx10+k6JWz6u7VsohfSw8g8hjdBZEf8CFzXH1/1Z94=", + "type": "tarball", + "url": "https://github.com/NixOS/nixpkgs/archive/50eb7ecf4cd0a5756d7275c8ba36790e5bd53e33.tar.gz" + }, + "original": { + "type": "tarball", + "url": "https://github.com/NixOS/nixpkgs/archive/50eb7ecf4cd0a5756d7275c8ba36790e5bd53e33.tar.gz" + } + }, + "nixpkgs-regression": { + "locked": { + "lastModified": 1643052045, + "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2", + "type": "github" + }, + "original": { + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2", + "type": "github" + } + }, + "nixpkgs-regression_2": { + "locked": { + "lastModified": 1643052045, + "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2", + "type": "github" + }, + "original": { + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2", + "type": "github" + } + }, + "nixpkgs-stable": { + "locked": { + "lastModified": 1710695816, + "narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "614b4613980a522ba49f0d194531beddbb7220d3", + "type": "github" + }, + "original": { + "owner": "NixOS", + "ref": "nixos-23.11", + "repo": "nixpkgs", + "type": "github" + } + }, + "nixpkgs_2": { + "locked": { + "lastModified": 1715037484, + "narHash": "sha256-OUt8xQFmBU96Hmm4T9tOWTu4oCswCzoVl+pxSq/kiFc=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "ad7efee13e0d216bf29992311536fce1d3eefbef", + "type": "github" + }, + "original": { + "id": "nixpkgs", + "type": "indirect" + } + }, + "poetry2nix": { + "inputs": { + "flake-utils": "flake-utils", + "nix-github-actions": "nix-github-actions", + "nixpkgs": [ + "devenv", + "cachix", + "devenv", + "nixpkgs" + ] + }, + "locked": { + "lastModified": 1692876271, + "narHash": "sha256-IXfZEkI0Mal5y1jr6IRWMqK8GW2/f28xJenZIPQqkY0=", + "owner": "nix-community", + "repo": "poetry2nix", + "rev": "d5006be9c2c2417dafb2e2e5034d83fabd207ee3", + "type": "github" + }, + "original": { + "owner": "nix-community", + "repo": "poetry2nix", + "type": "github" + } + }, + "pre-commit-hooks": { + "inputs": { + "flake-compat": [ + "devenv", + "flake-compat" + ], + "flake-utils": "flake-utils_2", + "gitignore": "gitignore", + "nixpkgs": [ + "devenv", + "nixpkgs" + ], + "nixpkgs-stable": "nixpkgs-stable" + }, + "locked": { + "lastModified": 1713775815, + "narHash": "sha256-Wu9cdYTnGQQwtT20QQMg7jzkANKQjwBD9iccfGKkfls=", + "owner": "cachix", + "repo": "pre-commit-hooks.nix", + "rev": "2ac4dcbf55ed43f3be0bae15e181f08a57af24a4", + "type": "github" + }, + "original": { + "owner": "cachix", + "repo": "pre-commit-hooks.nix", + "type": "github" + } + }, + "root": { + "inputs": { + "devenv": "devenv", + "devshell": "devshell", + "flake-parts": "flake-parts", + "nixpkgs": "nixpkgs_2", + "rootdir": "rootdir" + } + }, + "rootdir": { + "flake": false, + "locked": { + "narHash": "sha256-d6xi4mKdjkX2JFicDIv5niSzpyI0m/Hnm8GGAIU04kY=", + "type": "file", + "url": "file:///dev/null" + }, + "original": { + "type": "file", + "url": "file:///dev/null" + } + }, + "systems": { + "locked": { + "lastModified": 1681028828, + "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=", + "owner": "nix-systems", + "repo": "default", + "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e", + "type": "github" + }, + "original": { + "owner": "nix-systems", + "repo": "default", + "type": "github" + } + }, + "systems_2": { + "locked": { + "lastModified": 1681028828, + "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=", + "owner": "nix-systems", + "repo": "default", + "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e", + "type": "github" + }, + "original": { + "owner": "nix-systems", + "repo": "default", + "type": "github" + } + }, + "systems_3": { + "locked": { + "lastModified": 1681028828, + "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=", + "owner": "nix-systems", + "repo": "default", + "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e", + "type": "github" + }, + "original": { + "owner": "nix-systems", + "repo": "default", + "type": "github" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..888c9a5 --- /dev/null +++ b/flake.nix @@ -0,0 +1,49 @@ +{ + inputs = { + flake-parts.url = "github:hercules-ci/flake-parts"; + devshell.url = "github:numtide/devshell"; + devshell.inputs.nixpkgs.follows = "nixpkgs"; + devenv.url = "github:cachix/devenv"; + devenv.inputs.nixpkgs.follows = "nixpkgs"; + + rootdir = { + url = "file+file:///dev/null"; + flake = false; + }; + }; + + outputs = inputs@{ nixpkgs, flake-parts, devenv, rootdir, ... }: + flake-parts.lib.mkFlake { inherit inputs; } { + imports = [ + devenv.flakeModule + ]; + systems = [ "x86_64-linux" ]; + + perSystem = { inputs', system, pkgs, config, ... }: + let + rootdirOpt = + let + rootFileContent = builtins.readFile rootdir.outPath; + in + pkgs.lib.mkIf (rootFileContent != "") rootFileContent; + in + { + devenv.shells.mcu = { + devenv.root = rootdirOpt; + + packages = with pkgs; [ + gnumake + cmake + gcc-arm-embedded + python3 + picotool + openocd-rp2040 + ]; + + env = { + PICO_SDK_PATH = "${pkgs.pico-sdk}/lib/pico-sdk"; + }; + }; + }; + }; +} diff --git a/mcu/.envrc b/mcu/.envrc new file mode 100644 index 0000000..7c66df9 --- /dev/null +++ b/mcu/.envrc @@ -0,0 +1 @@ +use flake ..#mcu --override-input rootdir "file+file://"<(printf %s "$PWD") diff --git a/mcu/.gitignore b/mcu/.gitignore new file mode 100644 index 0000000..84c048a --- /dev/null +++ b/mcu/.gitignore @@ -0,0 +1 @@ +/build/ diff --git a/mcu/CMakeLists.txt b/mcu/CMakeLists.txt new file mode 100644 index 0000000..a73804c --- /dev/null +++ b/mcu/CMakeLists.txt @@ -0,0 +1,19 @@ +cmake_minimum_required(VERSION 3.12) + +# Pull in SDK (must be before project) +include(pico_sdk_import.cmake) + +project(test_project C CXX ASM) +set(CMAKE_C_STANDARD 11) +set(CMAKE_CXX_STANDARD 17) +set(CMAKE_C_COMPILER_WORKS ON) +set(CMAKE_CXX_COMPILER_WORKS ON) +pico_sdk_init() + +add_executable(qclk + main.c +) +pico_enable_stdio_usb(qclk 1) +pico_enable_stdio_uart(qclk 1) +pico_add_extra_outputs(qclk) +target_link_libraries(qclk pico_stdlib) diff --git a/mcu/flake.nix b/mcu/flake.nix new file mode 100644 index 0000000..8c081b1 --- /dev/null +++ b/mcu/flake.nix @@ -0,0 +1,58 @@ +{ + inputs = { + flake-parts.url = "github:hercules-ci/flake-parts"; + devshell.url = "github:numtide/devshell"; + devshell.inputs.nixpkgs.follows = "nixpkgs"; + }; + + outputs = inputs@{ nixpkgs, flake-parts, devshell, ... }: + flake-parts.lib.mkFlake { inherit inputs; } { + imports = [ + inputs.flake-parts.flakeModules.easyOverlay + devshell.flakeModule + ]; + systems = [ "x86_64-linux" ]; + perSystem = { inputs', system, pkgs, config, ... }: + let + in + { + _module.args.pkgs = import nixpkgs { + inherit system; + overlays = [ + devshell.overlays.default + ]; + }; + + overlayAttrs = { + # inherit (config.packages) quicfs; + }; + packages = rec { + # quicfs = (rustPkgs.workspace.quicfs { }).bin; + # default = quicfs; + }; + devshells.default = { + packagesFrom = [ + # (rustPkgs.workspaceShell { }) + ]; + packages = with pkgs; [ + gnumake + cmake + # gcc-arm-embedded-13 + # coreboot-toolchain.arm + python3 + picotool + openocd + ]; + + env = [ + { name = "PICO_SDK_PATH"; value = "${pkgs.pico-sdk}/lib/pico-sdk"; } + # { name = "CC"; value = "${pkgs.coreboot-toolchain.arm}/bin/arm-none-eabi-gcc"; } + # { name = "CXX"; value = "${pkgs.coreboot-toolchain.arm}/bin/arm-none-eabi-g++"; } + { name = "PICO_TOOLCHAIN_PATH"; value = "/tmp/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi"; } + # { name = "CC"; value = "/tmp/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi/bin/arm-none-eabi-gcc"; } + # { name = "CXX"; value = "/tmp/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi/bin/arm-none-eabi-g++"; } + ]; + }; + }; + }; +} diff --git a/mcu/main.c b/mcu/main.c new file mode 100644 index 0000000..f36b163 --- /dev/null +++ b/mcu/main.c @@ -0,0 +1,23 @@ +#include +#include "pico/stdlib.h" +#include "hardware/gpio.h" +#include "pico/binary_info.h" + +const uint LED_PIN = 25; + +int main() { + bi_decl(bi_program_description("This is a test binary.")); + bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED")); + + stdio_init_all(); + + gpio_init(LED_PIN); + gpio_set_dir(LED_PIN, GPIO_OUT); + while (1) { + gpio_put(LED_PIN, 0); + sleep_ms(250); + gpio_put(LED_PIN, 1); + puts("Hello World\n"); + sleep_ms(1000); + } +} diff --git a/mcu/pico_sdk_import.cmake b/mcu/pico_sdk_import.cmake new file mode 100644 index 0000000..65f8a6f --- /dev/null +++ b/mcu/pico_sdk_import.cmake @@ -0,0 +1,73 @@ +# This is a copy of /external/pico_sdk_import.cmake + +# This can be dropped into an external project to help locate this SDK +# It should be include()ed prior to project() + +if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH)) + set(PICO_SDK_PATH $ENV{PICO_SDK_PATH}) + message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')") +endif () + +if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT)) + set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT}) + message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')") +endif () + +if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH)) + set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH}) + message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')") +endif () + +set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK") +set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable") +set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK") + +if (NOT PICO_SDK_PATH) + if (PICO_SDK_FETCH_FROM_GIT) + include(FetchContent) + set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR}) + if (PICO_SDK_FETCH_FROM_GIT_PATH) + get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}") + endif () + # GIT_SUBMODULES_RECURSE was added in 3.17 + if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0") + FetchContent_Declare( + pico_sdk + GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk + GIT_TAG master + GIT_SUBMODULES_RECURSE FALSE + ) + else () + FetchContent_Declare( + pico_sdk + GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk + GIT_TAG master + ) + endif () + + if (NOT pico_sdk) + message("Downloading Raspberry Pi Pico SDK") + FetchContent_Populate(pico_sdk) + set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR}) + endif () + set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE}) + else () + message(FATAL_ERROR + "SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git." + ) + endif () +endif () + +get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}") +if (NOT EXISTS ${PICO_SDK_PATH}) + message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found") +endif () + +set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake) +if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE}) + message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK") +endif () + +set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE) + +include(${PICO_SDK_INIT_CMAKE_FILE})