ROM-8720 user guide

產品介紹(Product introduction )

產品特性(Product 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

產品官網連結(Product official website link) 

ROM-8720

硬件接口說明(Hardware interface introduction)

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	SOM-DB5920 Voltage Input (VIN) Selection
J11	COMe Module +V5SB supply
J14	ATX / AT Mode Selection
J15	Carrier Board SPI power supply
J16	Front Panel Connector
J18	Normal Operation / Clear COMS Selection
J19	BMC software Enable Disable Selection
J100	OCP 10G Fibber & Copper SEL
J101	OCP I2C & MDIO SEL
J102	PCIE1X0 to PCIEX4 slot & BMC SEL
J103	PCIE1X4 to PCIEX4 slot & BMC SEL
J104	USB2&3 Port to LAN_USB_23 & BMC SEL
J106	LPC Pin Header Reset SEL
SW_LPC_TPM1	TPM Enable/Disable Switch
SW_LPC_TPM2	TPM Enable/Disable Switch
CB_PWROK	PWROK Signal Pull Down or Floating Selection
PWRBTN1	Power Button
RESET1	Reset Button
SLEEP1	Sleep Button
EXT_THRM_1#	External Thermal Trip Button
WAKE_1#	Wake Button
LID1	LID Button
RAPID1	Rapid shutdown button

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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Debug 串口調試 (Debug port Setting)

1. Connect RS-232 Cable (1700019474) to debug port (COM1)(up side) on SOM-DB5920.
2. Connect it to your PC with RS-232 Cable (1700019474).

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)

LAN function check

CN12 (down): fm1-mac3

CN12(up): fm1-mac4

CN13(down): fm1-mac5

CN13(up): fm1-mac6

Command : 

# ip a

Up and ping with I/F fm1-mac3:

# ifconfig fm1-mac3 up

# dhclient –d fm1-mac3

# ping 8.8.8.8

Up and ping with I/F fm1-mac4:

# ifconfig fm1-mac4 up

1. dhclient –d fm1-mac4

ping 8.8.8.8

Up and ping with I/F fm1-mac5:

# ifconfig fm1-mac5 up

# dhclient –d fm1-mac5

# ping 8.8.8.8

 

Up and ping with I/F fm1-mac6:

# ifconfig fm1-mac6 up

# dhclient –d fm6-mac6

# ping 8.8.8.8

ROM-EG60 Function:

    RJ45_CN1: fm1-mac9

    RJ45_CN2: fm1-mac10

Command : ip a 

 

1. ifconfig fm1-mac9 up

1. ifconfig fm1-mac10 up

 

Up and ping with I/F fm1-mac9:

# dhclient –d fm1-mac9

# ping 8.8.8.8

12. Up and ping with I/F fm1-mac10:

# dhclient –d fm1-mac10

 #ping 8.8.8.8

Ping google.com

Edit /etc/resolv.conf to add nameserver

1. ping google.com

 

WiFi使用方法(WIFI Testing Method)

Test WIFI (EWM-W168)

Connect mini PCIe to PCIe

Connect to SOM-1A10 PCIE2 or 3

The I/F may different with the PCIE slot

I/F:

wlP1p1s0(PCIE2) or wlP2p1s0(PCIE3)

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Need to install wpa_supplicant first

Up and ping with I/F wlP1p1s0:

1. killall wpa_supplicant

1. ifconfig wlP2p1s0 up

1. wpa_passphrase "Pilimao" "0913079939" > /tmp/wpa.conf

# wpa_supplicant -BDwext -i wlP2p1s0 -c /tmp/wpa.conf

Request IP Addr:

1. dhclient -d wlP2p1s0

1. ping 8.8.8.8:

Add nameserver:

1. vi /etc/resolv.conf

1. ping google.com:

 

串口使用方法(Serial Port Operating Method)

 

RS-232 test: Connect RS-232 loopback

COM2: /dev/ttyS1

Test script:

<span lang="EN-US" style="color:black">#!/bin/bash</span>

<span lang="EN-US" style="color:black">#set -x #echo on</span>


<span lang="EN-US" style="color:black">echo "Enable and Set RS-232 $1..."</span>

<span lang="EN-US" style="color:black">stty -F $1 speed 115200 -onlcr -echo</span>

<span lang="EN-US" style="color:black">sleep 1</span>


<span lang="EN-US" style="color:black">echo "Check RS-232 $1... speed"</span>

<span lang="EN-US" style="color:black">stty -F $1 speed</span>

<span lang="EN-US" style="color:black">sleep 1</span>


<span lang="EN-US" style="color:black">echo "echo Test_RS-232 to $1 x5..."</span>

<span lang="EN-US" style="color:black">sleep 1</span>


<span lang="EN-US" style="color:black">cat $1 &</span>

<span lang="EN-US" style="color:black">sleep 1</span>

<span lang="EN-US" style="color:black">for ((i=1;i<=5;i++))</span>

<span lang="EN-US" style="color:black">do</span>

<span lang="EN-US" style="color:black">    echo "Test_RS-232 to $1 +$i" > $1</span>

<span lang="EN-US" style="color:black">    sleep 0.5</span>

<span lang="EN-US" style="color:black">done</span>

<span lang="EN-US" style="font-size:11.0pt"><span style="font-family:" times",serif"=""><span style="color:black">echo "Finished RS-232 Test..."</span></span></span>

RS-232: ttyS1(COM2 loopback test):

# ./RS-232_test.sh /dev/ttyS1

Watch Dog Function

System will reboot after enable watchdog and count 60 sec :

Check default watchdog time:

Enable watchdog, system will reboot after 60 sec.

1. echo 1 > /dev/watchdog

System poweroff after 60 sec. cannot reboot again

 Set timeout to 10 and pin rate to 13, the system will reboot after 10 seconds.

1. ./watchdog-test-adv -t 10 -p 13

RTC test

Disable RTC sync service:

1. systemctl stop systemd-timesyncd

Set system time to current, then write to RTC:

1. date 110415302022 && hwclock -w && date

Set one incorrect time, then read time from RTC to verify:

1. date 010100002000 && hwclock -r && date

Set the system time from the RTC:

1. hwclock -s && date

SATA DISK:

  Read/write data and compare sha512 result

SPI Read/Write test

Write/Read/Verify data in the start/end 4 byte of flash

1. Note: Make sure the content of SPI nor flash is erased

1. echo -n $'\x06\x05\x04\x03\x02\x01' > test

1. dd if=test of=/dev/mtdblock0

1. hexdump -C /dev/mtdblock0 -n 64

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