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Go embedded development

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嵌入式 Go 开发使用 Go mod init 创建项目。指定目标架构进行交叉编译:GOOS 和 GOARCH。使用 runtime/cgo 和 runtime/volatile 与硬件交互,以及 github.com/d2r2/go-i2c 与 I²C 设备通信。实战案例:使用 Go 为 ARM 架构开发 LED 闪烁程序,利用 i2c.NewI2C 与 I²C 通信。

Go 嵌入式开发

Go 嵌入式开发:入门指南

引言

Go(又称 Golang)是一种现代、高性能的编程语言,它非常适合嵌入式系统开发。Go 编译成高效的本机代码,并提供对低级硬件的直接访问。

创建嵌入式项目

要创建一个嵌入式 Go 项目,使用以下命令:

go mod init github.com/username/embedded-project

交叉编译

要针对您特定的嵌入式设备交叉编译程序,请指定目标架构:

GOOS=linux GOARCH=arm go build -o my-app

硬件交互

Go 提供了多种包来与硬件交互,包括:

  • runtime/cgo:访问本机 C 代码
  • runtime/volatile:访问受保护的硬件寄存器
  • github.com/d2r2/go-i2c:与 I²C 设备通信

实战案例:LED 闪烁

下面是一个使用 Go 为 ARM 架构开发的 LED 闪烁程序示例:

package main

import (
    "github.com/d2r2/go-i2c"
    "runtime/volatile"
    "time"
)

const (
    LED_ADDRESS = 0x3c
    LED_REGISTER = 0x00
)

func main() {
    i2c, err := i2c.NewI2C(1, 0)
    if err != nil {
        panic(err)
    }
    defer i2c.Close()

    for {
        i2c.WriteBytes(LED_ADDRESS, []byte{LED_REGISTER, 0xff})
        time.Sleep(500 * time.Millisecond)
        i2c.WriteBytes(LED_ADDRESS, []byte{LED_REGISTER, 0x00})
        time.Sleep(500 * time.Millisecond)
    }
}

这将每隔一秒让连接到 LED 驱动程序的 LED 闪烁一次。

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