59 lines
2.3 KiB
Zig
59 lines
2.3 KiB
Zig
//***************************************************************************
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// examples/hello_zig/hello_zig.zig
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//
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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership. The
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// ASF licenses this file to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance with the
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// License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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//
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//***************************************************************************
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//***************************************************************************
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// Included Files
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//***************************************************************************
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const std = @import("std");
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//****************************************************************************
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//* C API - need libc linking (freestanding libc is stubs only)
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//****************************************************************************
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// NuttX namespace
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const NuttX = struct {
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pub const c = @cImport({
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@cInclude("nuttx/config.h");
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@cInclude("stdio.h");
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});
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pub fn print(comptime fmt: [*:0]const u8, args: anytype) void {
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_ = printf(std.fmt.comptimePrint(std.mem.span(fmt), args));
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}
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};
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// or (optional) const c = std.c; // from std library (non-full libc)
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// typedef alias
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const printf = NuttX.c.printf;
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//****************************************************************************
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//* hello_zig_main
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//****************************************************************************
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comptime {
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// rename to hello_zig_main entry point for nuttx
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@export(hello_zig, .{
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.name = "hello_zig_main",
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.linkage = .weak,
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});
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}
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fn hello_zig(_: c_int, _: ?[*]const [*]const u8) callconv(.C) c_int {
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NuttX.print("[{s}]: Hello, Zig!\n", .{NuttX.c.CONFIG_ARCH_BOARD});
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return 0;
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}
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