【米尔MYD-J1028X开发板试用体验】开发环境体验之快速直接板上Linux C开发

前言

开发板默认安装了ubuntu系统,可以使用如下指令查看系统版本

cat /proc/version

uname -a

lsb_release -a

root@localhost:~# cat /proc/version

Linux version 5.4.47-g20182b961 (root@ubuntu18) (gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)) #3 SMP PREEMPT Sun Dec 12 08:32:43 CST 2021

root@localhost:~#  uname -a

Linux localhost 5.4.47-g20182b961 #3 SMP PREEMPT Sun Dec 12 08:32:43 CST 2021 aarch64 aarch64 aarch64 GNU/Linux

root@localhost:~# lsb_release -a

No LSB modules are available.

Distributor ID: NXP-LSDK

Description:    NXP LSDK 2012 main

Release:        2012

Codename:       bionic

root@localhost:~#

板子本身安装了GCC工具链

使用以下指令查看gcc版本

gcc -v

root@localhost:~# gcc -v

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/7/lto-wrapper

Target: aarch64-linux-gnu

Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=aarch64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu

Thread model: posix

gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)

Linux C开发体验

串口登录

vi led.c

按键i进入编辑模式

复制黏贴以下代码

按esc

按shift+:进入命令模式

输入wq回车保存

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

int main(void)

{

while(1)

{

system("echo 0 > /sys/class/leds/d22/brightness");

sleep(1);

system("echo 1 > /sys/class/leds/d22/brightness");

sleep(1);


}

return 0;

编译gcc led.c -o led

运行./led

可以看到D22以1秒间隔闪烁。

总结

由于系统自带了gcc工具链，所以可以直接在开发板进行开发,而不需要交叉编译开发，非常便捷。