Microzig Generation 2 Build Interface (#26)

* Drops microzig dependency
* Starts to port to MicroZig Build Gen 2
* Drops CI

---------

Co-authored-by: Felix "xq" Queißner <git@random-projects.net>

Author: ikskuh

.github/workflows/build.yml

@@ -1,32 +1,84 @@
 const std = @import("std");
-const microzig = @import("microzig");
 
-pub const boards = @import("src/boards.zig");
-pub const chips = @import("src/chips.zig");
+fn path(comptime suffix: []const u8) std.Build.LazyPath {
+    return .{
+        .cwd_relative = comptime ((std.fs.path.dirname(@src().file) orelse ".") ++ suffix),
+    };
+}
 
-pub fn build(b: *std.build.Builder) void {
-    const optimize = b.standardOptimizeOption(.{});
-    inline for (@typeInfo(boards).Struct.decls) |decl| {
-        const exe = microzig.addEmbeddedExecutable(b, .{
-            .name = @field(boards, decl.name).name ++ ".minimal",
-            .source_file = .{
-                .path = "test/programs/minimal.zig",
+const hal = .{
+    .source_file = path("/src/hals/ATmega328P.zig"),
+};
+
+pub const chips = struct {
+    pub const atmega328p = .{
+        .preferred_format = .hex,
+        .chip = .{
+            .name = "ATmega328P",
+            .url = "https://www.microchip.com/en-us/product/atmega328p",
+            .cpu = .avr5,
+            .register_definition = .{
+                .json = path("/src/chips/ATmega328P.json"),
             },
-            .backing = .{ .board = @field(boards, decl.name) },
-            .optimize = optimize,
-        });
-        exe.installArtifact(b);
-    }
+            .memory_regions = &.{
+                .{ .offset = 0x000000, .length = 32 * 1024, .kind = .flash },
+                .{ .offset = 0x800100, .length = 2048, .kind = .ram },
+            },
+        },
+        .hal = hal,
+    };
+};
 
-    inline for (@typeInfo(chips).Struct.decls) |decl| {
-        const exe = microzig.addEmbeddedExecutable(b, .{
-            .name = @field(chips, decl.name).name ++ ".minimal",
-            .source_file = .{
-                .path = "test/programs/minimal.zig",
+pub const boards = struct {
+    pub const arduino = struct {
+        pub const nano = .{
+            .preferred_format = .hex,
+            .chip = chips.atmega328p.chip,
+            .hal = hal,
+            .board = .{
+                .name = "Arduino Nano",
+                .url = "https://docs.arduino.cc/hardware/nano",
+                .source_file = path("/src/boards/arduino_nano.zig"),
             },
-            .backing = .{ .chip = @field(chips, decl.name) },
-            .optimize = optimize,
-        });
-        exe.installArtifact(b);
-    }
+        };
+
+        pub const uno_rev3 = .{
+            .preferred_format = .hex,
+            .chip = chips.atmega328p.chip,
+            .hal = hal,
+            .board = .{
+                .name = "Arduino Uno",
+                .url = "https://docs.arduino.cc/hardware/uno-rev3",
+                .source_file = path("/src/boards/arduino_uno.zig"),
+            },
+        };
+    };
+};
+
+pub fn build(b: *std.build.Builder) void {
+    _ = b;
+    // const optimize = b.standardOptimizeOption(.{});
+    // inline for (@typeInfo(boards).Struct.decls) |decl| {
+    //     const exe = microzig.addEmbeddedExecutable(b, .{
+    //         .name = @field(boards, decl.name).name ++ ".minimal",
+    //         .source_file = .{
+    //             .path = "test/programs/minimal.zig",
+    //         },
+    //         .backing = .{ .board = @field(boards, decl.name) },
+    //         .optimize = optimize,
+    //     });
+    //     exe.installArtifact(b);
+    // }
+
+    // inline for (@typeInfo(chips).Struct.decls) |decl| {
+    //     const exe = microzig.addEmbeddedExecutable(b, .{
+    //         .name = @field(chips, decl.name).name ++ ".minimal",
+    //         .source_file = .{
+    //             .path = "test/programs/minimal.zig",
+    //         },
+    //         .backing = .{ .chip = @field(chips, decl.name) },
+    //         .optimize = optimize,
+    //     });
+    //     exe.installArtifact(b);
+    // }
 }

build.zig

@@ -1,10 +1,5 @@
 .{
     .name = "microzig-espressif-esp",
     .version = "0.1.0",
-    .dependencies = .{
-        .microzig = .{
-            .url = "https://github.com/ZigEmbeddedGroup/microzig/archive/0b3be0a4cc7e6d45714cb09961efc771e364723c.tar.gz",
-            .hash = "1220ada6d01db7b3d0aa8642df89b1af9ee71b681438249e9a7efb2275fc4cf32152",
-        },
-    },
+    .dependencies = .{},
 }

build.zig.zon

@@ -5,15 +5,3 @@ const chips = @import("chips.zig");
 fn root_dir() []const u8 {
     return std.fs.path.dirname(@src().file) orelse unreachable;
 }
-
-pub const arduino_nano = micro.Board{
-    .name = "Arduino Nano",
-    .source = .{ .path = root_dir() ++ "/boards/arduino_nano.zig" },
-    .chip = chips.atmega328p,
-};
-
-pub const arduino_uno = micro.Board{
-    .name = "Arduino Uno",
-    .source = .{ .path = root_dir() ++ "/boards/arduino_uno.zig" },
-    .chip = chips.atmega328p,
-};

src/boards.zig

@@ -6,12 +6,3 @@ const MemoryRegion = micro.MemoryRegion;
 fn root_dir() []const u8 {
     return std.fs.path.dirname(@src().file) orelse ".";
 }
-
-pub const atmega328p = Chip.from_standard_paths(root_dir(), .{
-    .name = "ATmega328P",
-    .cpu = micro.cpus.avr5,
-    .memory_regions = &.{
-        MemoryRegion{ .offset = 0x000000, .length = 32 * 1024, .kind = .flash },
-        MemoryRegion{ .offset = 0x800100, .length = 2048, .kind = .ram },
-    },
-});