ROM-8720 user guide

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資源特性(Features)

  • NXP LS1046A Cortex®-A72 COM Express Type 7 Computer-on-Module
  • COM Express® Type 7 Compact Module
  • Up to 4 Cores, 1.6GHz
  • One Channel DDR4 SODIMM, max. 16GB (Both ECC & Non-ECC)
  • Up to 10GbE x2 and GbE x4
  • PCIe 3.0 x3, PCIe 2.0 x2, USB 3.0 x3 and USB2.0 x2
  • Support Ubuntu BSP

訂購資訊(Ordering Information)

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接口布局和尺寸(Layout and Sizes)

  ROM-8720 接口布局圖 Board Dimension Layout 

ROM-8720 Board Dimension Layout .PNG

  SOM-DB5920-00A1 接口布局圖 Board Dimension Layout

SOM-DB5920 Dimension layout.PNG

  主板内置插针式引脚排序方式 (Pin Header defination) 

SOM-DB5920 Connector Location.PNG

  Internal I/O

Position Description
   

  Rear I/O 

 

Position Description
   

   

  机械尺寸  (Mechanical Characteristics)

ROM-8720

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快速入门 (Quick Start)

  系统下载 (OS Download)

  • Linux系统 (Linux OS)

           OS Support List (based on Ubutu 18.04)


  Linux 燒錄方法 (Linux Flash eMMC Method)

  Debug 串口調試 (Debug port Setting)

以 Tera Term  为例介绍如何使用串口调试功能

   Baud Rate波特率:115200
   Data 数据位:8
   Parity 奇偶校验:无
   Stop 停止位:1
   Flow Control流控:无
 

Tera Term Tool 

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Check the Sriel port in Device Manager (查看PC端的串口号):

if you can not identify the Serial device , please check your serial driver. 

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Debug port connection (串口連接) 

 

 

Log into Terminal  Tool (进入串口调试终端):

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Linux系统的基本使用(Linux System Basic Operating Method)

  UUU 使用方法(USB Connection (OTG port))

 

  乙太網路使用方法(Ethernent Testing Method)

Command : ifconfig 

 

Command: Ping - I eth1 8.8.8.8  or Ping - I eth0 8.8.8.8  

 

  WiFi使用方法(WIFI Testing Method)

 

  串口使用方法(Serial Port Operating Method)

RS-232 Test

CN15上(SER0/UART3): /dev/ttymxc2

CN15 下(SER2/UART1): /dev/ttymxc0

COM 3 (A53 debug/SER3/UART2): /dev/ttymxc1

COM 1 (M4 debug/SER1/UART4): /dev/ttymxc3

SW7 Setting (SW7設置) 

 

MODE1  MODE0
    0            0            LOOPBACK
    0            1            RS232
    1            0            RS485
    1            1            RS422

Loopback test (eg. ttymxc0)
Connect loopback test tool

  1. stty ‐F /dev/ttymxc0 115200
    # stty ‐F /dev/ttymxc0 ‐echo
    # cat /dev/ttymxc0 &
    # echo test > /dev/ttymxc0

  蓝牙使用方法(BlueTooth Operating Method)

Command : 

$ hciconfig hci0 up
$ bluetoothctl
$ discoverable on
$ pairable on
$ scan on
[NEW] FC:18:3C:8D:75:F4 myphone
$ scan off
$ pair FC:18:3C:8D:75:F4
$ connect FC:18:3C:8D:75:F4

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  遠程訪問及文件傳輸(Remote Access and File Transimmion)

              查看主板IP位址 ( Chech IP Address ):

        Command : ifconfig

 

Windows下SSH访问及文件传输

SSH Remote Log into Device 

  • SSH远程登录,以putty选择putty.exe(或者使用Xshell、SecureCRT等类似软件)
  • 需要设置远程设备的IP、通讯端口(默认22)、通讯方式,登录后验证用户名密码

 

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通用方法(General Method)

  查看CPU温度(Check CPU Temperature)

 

  查看CPU频率(Check CPU Frequency)

           cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 
           >> 900000
           cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq    
           >> 1200000

  查看内存容量(Check Memory Capacity)

  busybox free -m
 

查看存储容量(Check Storage Capacity)

 busybox df -h
 

  網路Ping測試(Ping Network Testing)

     ping 8.8.8.8
     PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
     64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=2.10 ms
     64 bytes from 8.8.8.8: icmp_seq=2 ttl=54 time=2.10 ms

  設置RTC (RTC Setting) 

  

         

Linux BSP編譯方法(Linux BSP Compile Method)

  Ubuntu18.04