ROM-8720 user guide

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)

接口布局和尺寸(Layout and Sizes)

  ROM-8720 接口布局圖 Board Dimension Layout 

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

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

  Connector List

Position	Description
ATX1	ATX Connector
CN1	COM Express Connector
COM1	UART Connector (Tx, Rx)
COM2	UART Connector (Tx, Rx)
DCIN1	Wide Range DC Input Connector1
GPIO1	GPIO Pin Header
I2C1	I2C Wafer Box
LAN0_USB01	LAN0, USB3.0/2.0 Port0 and Port1 Connector
LAN1_USB23	LAN1, USB3.0/2.0 Port2 and Port3 Connector
LPC_PH1	Low Pin Count Pin Header
PCIEX16_0	PCIe x16 slot
PCIEX8_1	PCIe x8 slot
PCIEX4_0	PCIe x4 slot
BH1	RTC Battery Connector
CPU_FAN1	Smart Fan Connector
SMB1	SMBus Wafer Box
SYS_FAN1	System Fan Connector
SPI_CN1	SPI BIOS PIN HEADER
OCP module connector	OCP module connector
SPI_BIOS1	SPI BIOS Socket
DCIN2	Wide Range DC Input Connector2
PCIEX4_1	PCIe x4 slot
SATA0	SATA Connector
SATA1	SATA Connector
VGA	CRT Connector

Jumper, Switch, Button List

Position	Description
J8, J9
J11
J14
J15
J16
J18
J19
J100
J101
J102
J103
J104
J106
SW_LPC_TPM1
SW_LPC_TPM2
CB_PWROK
PWRBTN1
RESET1
SLEEP1
EXT_THRM_1#
WAKE_1#
LID1
RAPID1

  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)

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  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 

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. 

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)

 

  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  

 

  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

  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

 

 

 

通用方法(General Method)

  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