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const std = @import("std");
const Builder = std.Build;
pub fn build(b: *std.Build) !void {
const uno = std.zig.CrossTarget{
.cpu_arch = .avr,
.cpu_model = .{ .explicit = &std.Target.avr.cpu.atmega328p },
.os_tag = .freestanding,
.abi = .none,
};
const exe = b.addExecutable(.{
.name = "blink",
.root_source_file = b.path("blink.zig"),
.target = b.resolveTargetQuery(uno),
.optimize = .ReleaseSafe,
});
const init = b.addObject(.{
.name = "startup",
.root_source_file = b.path("init.zig"),
.target = b.resolveTargetQuery(uno),
.optimize = .ReleaseSafe
});
exe.addObject(init);
exe.setLinkerScriptPath(b.path("linker.ld"));
b.installArtifact(exe);
const tty = b.option(
[]const u8,
"tty",
"Specify the port to which the Arduino is connected (defaults to /dev/ttyACM0)",
) orelse "/dev/ttyACM0";
const bin_path = b.getInstallPath(.{ .custom = exe.installed_path orelse "./bin" }, exe.out_filename);
const flash_command = blk: {
var tmp = std.ArrayList(u8).init(b.allocator);
try tmp.appendSlice("-Uflash:w:");
try tmp.appendSlice(bin_path);
try tmp.appendSlice(":e");
break :blk try tmp.toOwnedSlice();
};
const upload = b.step("upload", "Upload the code to an Arduino device using avrdude");
const avrdude = b.addSystemCommand(&.{
"avrdude",
"-carduino",
"-patmega328p",
"-D",
"-P",
tty,
flash_command,
});
upload.dependOn(&avrdude.step);
avrdude.step.dependOn(&exe.step);
const objdump = b.step("objdump", "Show dissassembly of the code using avr-objdump");
const avr_objdump = b.addSystemCommand(&.{
"avr-objdump",
"-dh",
bin_path,
});
objdump.dependOn(&avr_objdump.step);
avr_objdump.step.dependOn(&exe.step);
const monitor = b.step("monitor", "Opens a monitor to the serial output");
const screen = b.addSystemCommand(&.{
"screen",
tty,
"115200",
});
monitor.dependOn(&screen.step);
b.default_step.dependOn(&exe.step);
}
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