嵌入式开发必备-RK3562演示Linux常用系统查询命令（上）

本文介绍Linux系统查看硬件配置及常用调试命令，方便开发者快速了解开发板硬件信息及进行相关调试。触觉智能RK3562开发板演示，搭载4核A53处理器，主频高达2.0GHz；内置独立1Tops算力NPU，可应用于物联网网关、平板电脑、智能家居、教育电子、工业显示与控制等行业。

查看DDR

获取内存信息

下面数字以MB为单位。

root@ido:/# free -m total used free shared buff/cache availableMem: 1970 287 1316 19 366 1638Swap: 0 0 0

更详细信息可以使用下面命令查看

root@ido:/# cat /proc/meminfoMemTotal: 2017532 kB #总内存的大小MemFree: 1347508 kB #系统当前可用的空闲内存大小MemAvailable: 1677712 kB #系统当前可用的内存大小，这包括空闲内存和缓存的内存。Buffers: 32500 kBCached: 309484 kBSwapCached: 0 kBActive: 108648 kBInactive: 433624 kBActive(anon): 1080 kBInactive(anon): 219252 kBActive(file): 107568 kBInactive(file): 214372 kBUnevictable: 8132 kBMlocked: 0 kBSwapTotal: 0 kBSwapFree: 0 kBDirty: 0 kBWriteback: 0 kBAnonPages: 208420 kBMapped: 189896 kBShmem: 20044 kBKReclaimable: 33300 kBSlab: 74908 kBSReclaimable: 33300 kBSUnreclaim: 41608 kBKernelStack: 5328 kBPageTables: 7736 kBNFS_Unstable: 0 kBBounce: 0 kBWritebackTmp: 0 kBCommitLimit: 1008764 kBCommitted_AS: 1675032 kBVmallocTotal: 263061440 kBVmallocUsed: 11944 kBVmallocChunk: 0 kBPercpu: 720 kBCmaTotal: 16384 kBCmaAllocated: 1600 kBCmaReleased: 14784 kBCmaFree:            2088 kB

查看DDR频率

下面数字以hz为单位。

root@ido:/# free -m total used free shared buff/cache availableMem: 1970 287 1316 19 366 1638Swap: 0 0 0

查看存储

查看物理存储空间

root@ido:~# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTmmcblk2 179:0 0 14.6G 0 disk ├─mmcblk2p1 179:1 0 4M 0 part ├─mmcblk2p2 179:2 0 4M 0 part ├─mmcblk2p3 179:3 0 64M 0 part ├─mmcblk2p4 179:4 0 128M 0 part ├─mmcblk2p5 179:5 0 32M 0 part ├─mmcblk2p6 179:6 0 2G 0 part /media/ido/userdata├─mmcblk2p7 179:7 0 128M 0 part /media/ido/oem└─mmcblk2p8 179:8 0 12.2G 0 part /mmcblk2boot0 179:32 0 4M 1 disk mmcblk2boot1 179:64   0    4M  1 disk

查看文件系统空间

root@ido:/# df -hFilesystem Size Used Avail Use% Mounted on/dev/root 12G 3.5G 8.0G 31% /devtmpfs 974M 8.0K 974M 1% /devtmpfs 985M 0 985M 0% /dev/shmtmpfs 197M 7.6M 190M 4% /runtmpfs 5.0M 4.0K 5.0M 1% /run/locktmpfs 985M 0 985M 0% /sys/fs/cgrouptmpfs 197M 0 197M 0% /run/user/0tmpfs 197M 8.0K 197M 1% /run/user/1001/dev/mmcblk2p7 121M 12M 101M 11% /media/ido/oem/dev/mmcblk2p6 2.0G 36K 1.8G 1% /media/ido/userdata

查看CPU

查看CPU频率

下面数字以kHz为单位。

root@ido:/# cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq408000408000408000408000

查看CPU温度

下面数字以毫摄氏度为单位，需要除以1000即35摄氏度。

root@ido:/# cat /sys/class/thermal/thermal_zone0/temp34375

查看网络信息

查看网络节点及IP

root@ido:~# ifconfigenp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.96 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::a60a:bffe:32d2:8a02 prefixlen 64 scopeid 0x20<link> ether 9a:55:02:97:d9:a2 txqueuelen 1000 (Ethernet) RX packets 121 bytes 12817 (12.8 KB) RX errors 0 dropped 2 overruns 0 frame 0 TX packets 31 bytes 5749 (5.7 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 90 base 0xd000

eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether 8a:18:a3:a0:63:c9 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 71

eth2: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether 8e:18:a3:a0:63:c9 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 75

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 192 bytes 14785 (14.7 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 192 bytes 14785 (14.7 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether c0:f5:35:12:5a:40 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

查看网关

root@ido:~# route -nKernel IP routing tableDestination Gateway Genmask Flags Metric Ref Use Iface0.0.0.0 192.168.0.1 0.0.0.0 UG 100 0 0 enp1s0192.168.0.0 0.0.0.0 255.255.255.0 U 100 0 0 enp1s0

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产品简介

触觉智能RK3562开发板（型号EVB3562），基于瑞芯微新一代Soc RK3562/RK3562J设计，可用于轻量级人工智能应用。EVB3562开发板配备了PCIe2.1/USB3.0 OTG/千兆网口等各类型接口，支持4G/5G通信、多摄像头及多种视频接口，可应用于物联网网关、平板电脑、智能家居、教育电子、工业显示、工业控制等行业领域。

搭载瑞芯微新一代RK3562/RK3562J芯片；

1TOPS算力NPU，支持INT8/INT16/FP16

等数据类型运算；

支持4K@30FPS与1080P@60FPS视频解码；

13M ISP，支持HDR与多路摄像头视频采集；

单路MIPI-DSI，最高2048 x 1080@60fps ；

单通道LVDS，最高1366 x 768@60fps ；

三路独立的以太网口，其中两路千兆网口，

一路百兆网口；

支持5G/4G/WiFi/蓝牙无线通信；

支持Android，Linux操作系统；