为什么会得纤维瘤

接上文【ELF 2学习板试用】开箱测评
打开下载目录

在\elfboard\01-教程文档下

打开elfboard\01-教程文档\ELF 2开发板快速启动手册.pdf 文件
有2方式调试硬件

命令行功能测试和桌面功能测试

我准备在Linux5.10主板命令行启动后网络SSH 下用shell脚本进行控制部分硬件测试。从IO控制-灯闪开始。
ELF 2开发板快速启动手册中GPIO例:

**学习板以 GPIO3_B5 为例进行GPIO测试
root@elf2-buildroot:~# cmddemo_gpio.sh GPIO3_B5 1 
// GPIO3_B5 拉高
root@elf2-buildroot:~# cmddemo_gpio.sh GPIO3_B5 0 
//GPIO3_B5 拉低****

在ELF 2学习板上使用shell脚本语言简单明了开发效率高便于调试修改动态性强资源利用灵活但实时性不足。
shell脚本是linux中壳层与命令行界面用户可以在shell脚本输入命令来执行各种各样的任务。可根据飞凌嵌入式提供程序快速实现功能。
连接12V的电源 开发板上的网线到路由

SSH 服务器出厂时网卡默认配置为静态 IP地址为 192.168.0.232 登录为 elf 用户密码 elf。root 用户密码 root。
可以根据此ip 192.168.0.232
接ssh

MobaXterm log 2025.01.19 15:54:42
=~=~=~=~=~=~=~=~=~=~=~=
[31mNetwork error: Connection timed out[0m

[1;30m(0qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq(B[0m

[31mSession stopped[0m

- Press [35m<return>[0m to exit tab
- Press [35mR[0m to restart session

- Press [35mS[0m to save terminal output to file

[31mNetwork error: Connection timed out[0m

[1;30m(0qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq(B[0m
[31mSession stopped[0m

- - Press [35m<return>[0m to exit tab
- - Press [35mR[0m to restart session- Press [35mS[0m to
- save terminal output to file  login as: rr oot  [0m
- (0lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
- qqqqqqqqqqqqqqqqqqqqqqqqk(B  (0x(B
- [1;32m(0`(B MobaXterm 20.0 (0`(B [0m
- (0x(B  (0x(B            [1;33m(SSH client, X-server and
- networking tools)[0m             (0x(B  (0x(B
- (0x(B  (0x(B (0b(B SSH session to
- [35mroot[0m@[35m192.168.0.232
- [0m(0x(B  (0x(B   (0`(B SSH compression :
- [31m(0e(B[0m                                            (0x(B
- (0x(B   (0`(B SSH-browser     : [1;32m(0d(B[0m
- (0x(B  (0x(B   (0`(B X11-forwarding  :
- [31m(0e(B[0m  (disabled or not supported by server)
- (0x(B (0x(B   (0`(B DISPLAY         :
- [35m192.168.1.104:0.0                         [0m   (0x(B
- (0x(B                                                                    (0x(B
- (0x(B (0b(B For more info, ctrl+click on
- [36m[4mhelp[0m or visit our [36m[4mwebsite[0m
- (0x(B
- (0mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
- qqqqqqqqqqqqqqqqqqqqqqqqqj(B

外挂一个Smart_Red_Green_Yellow红绿灯板原理如下

ELF 2学习板
Smart_Red_Green_Yellow红绿灯板与ELF 2学习板P26连接如下
3.3接1GND接9LEDr接11LEDg接7 LEDy接13

进行IO控制其实不需要上显示和这么大的系统
实时性也不十分好。
转接网线登录为root 用户密码 root
在root@elf2-buildroot:/opt目录下建立led.sh内容如下

#!/bin/sh

while true; do
cmddemo_gpio.sh GPIO3_B5 0
sleep 0.5
cmddemo_gpio.sh GPIO3_B5 1
sleep 0.5
done

加x权限
root@elf2-buildroot:/opt # chmod u+x

执行shell脚本

root@elf2-buildroot:/opt# sh ./led.sh

LEDr 红灯正常闪****

部分机器状态
ps

PID TTY          TIME CMD
  976 pts/0    00:00:00 bash
 1696 pts/0    00:00:00 sh
 1748 pts/0    00:00:00 ps

mem

total        used        free      shared  buff/cache   available
Mem:           3.7Gi       388Mi       3.0Gi        96Mi       365Mi       3.2Gi
Swap:             0B          0B          0B

disk

Filesystem Type      Size  Used Avail Use% Mounted on
/dev/root      ext4       14G  1.2G   13G   9% /
devtmpfs       devtmpfs  1.8G  8.0K  1.8G   1% /dev
tmpfs          tmpfs     1.9G  248K  1.9G   1% /tmp
tmpfs          tmpfs     1.9G  384K  1.9G   1% /run
tmpfs          tmpfs     1.9G  152K  1.9G   1% /var/log
tmpfs          tmpfs     1.9G   79M  1.8G   5% /dev/shm
/dev/mmcblk0p7 ext4      123M   12M  108M  10% /oem
/dev/mmcblk0p8 ext4       14G  285M   13G   3% /userdata```

net

eth0      Link encap:Ethernet  HWaddr 72:98:A4:FA:CB:AC  
          inet addr:192.168.0.232  Bcast:0.0.0.0  Mask:255.255.255.0
          inet6 addr: fe80::7098:a4ff:fefa:cbac/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15491 errors:0 dropped:1327 overruns:0 frame:0
          TX packets:23081 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1460866 (1.3 MiB)  TX bytes:8141320 (7.7 MiB)
          Interrupt:127 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:238 errors:0 dropped:0 overruns:0 frame:0
          TX packets:238 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:34976 (34.1 KiB)  TX bytes:34976 (34.1 KiB)

达到预期。