ROM-7720 user guide

資源特性(Features)

• NXP i.MX8 QuadMax 8-Core Processor with 2 Cortex-A72, 4 Cortex-A53 and 2 Cortex-M4F
• Multi OS support in Ubuntu/Debian/Yocto Linux and Android
• 64-bit LPDDR4 4GB
• 4K h.265 decoder, HD h.264 encoder
• Onboard eMMC Flash 16GB, boot selection from SPI/MMC/SD or SATA
• 3 USB 3.0 with OTG, Dual lane MIPI Camera
• Yocto, Android, QNX OS support

訂購資訊(Ordering Information)

接口布局和尺寸(Layout and Sizes)

ROM-7720 接口布局圖 Board Dimension Layout 

ROM-DB7503 接口布局圖 Board Dimension Layout

Internal I/O

Position	Description	Connector Type
BAT1	PIN Header for Battery	WAFER 8P 2.54mm 180D(M) DIP A2543WV2-8P
BH1	RTC Battery Holder	BATTERY HOLDER 24.9*23.4*8.9 CR2032 BH800.4GG
CAN1	CANBus Port 1	BOX HEADER 5x2P 2.54mm 180D(M) DIP 23N6960-10S10
CAN2	CANBus Port 2	BOX HEADER 5x2P 2.54mm 180D(M) DIP 23N6960-10S10
COM1	COM Port 1	BOX HEADER 5x2P 2.54mm 180D(M) DIP 23N6960-10S10
COM3	COM Port 3 (Debug Port)	BOX HEADER 5x2P 2.54mm 180D(M) DIP 23N6960-10S10
CN4	PCIex1 Connector 1	PCIEXPRESS 36P 180D(F) DIP 2EG01817-D2D-DF
CN5	PCIex1 Connector 2	PCIEXPRESS 36P 180D(F) DIP 2EG01817-D2D-DF
CN6	PCIex1 Connector 3	PCIEXPRESS 36P 180D(F) DIP 2EG01817-D2D-DF
CN11	SATA Connector	Serial ATA 7P 1.27mm 180D(M) DIP WATM-07DBN4A3B8
CN12	SATA Power Connector	WAFER 4P 2.5mm 180D(M) DIP 24W1161-04S10-01T
CN22	GPIOx8 sets	PIN HEADER 10x2P 2.0mm 180D(M) DIP 21N22050
CN25	MXM 3.0 Connector	MXM Conn. 314P 90D(F) SMD AS0B821-S78B-7H
CN26	M.2 Key E Slots	NGFF 75P 0.5mm 90D(F) H=4.2mm SMD AS0BC21-S40BE
CN38	FAN (Reserved)	WTB Con. 3P 2.54mm 180D(M) DIP A2543WV0-3P-6T-5e
CN39	MIPI-CSI1 (FPC, 4-Lane	FPC 39P, 0.6mm, H0.9mm
CN40	MIPI-CSI0 (FPC, 2-Lane)	FPC 39P, 0.6mm, H0.9mm
CN41	MIPI-CSI0 (Mini-SAS, 2-Lane)	Mini SAS 36P/0.8mm/(M)/LCP/VA/G15u/ S/BK/W
CN42	MIPI-CSI1 (Mini-SAS, 4-Lane)	Mini SAS 36P/0.8mm/(M)/LCP/VA/G15u/ S/BK/W
ESPI_CN1	ESPI	PIN HEADER 6x2P 2.0mm180D(M) SMD 21N22050-12M00B
I2C_GP_1	I2C Pin Header	WAFER BOX 4P 2.00mm 180D(M) DIP 721-81-04TW00
I2C_CN3	Audio Codec Board	PIN HEADER 2x10P 2.54mm 180D(M) DIP 21N22564
LVDS0	LVDS0	Wafer 2x20P/1.25mm/(M)/NY9T/VA/GFL/ S/WH/W
LVDS_BK_PWR	LVDS0 Back Light	WAFER BOX 5P 2.0mm 180D(M) DIP A2001WV2-5P
LVDS1	LVDS1	Wafer 2x20P/1.25mm/(M)/NY9T/VA/GFL/ S/WH/W
LVDS1_BK_PWR	LVDS1 Back Light	WAFER BOX 5P 2.0mm 180D(M) DIP A2001WV2-5P
SD1	SD Card Slot	SD CARD 9P 90D(F) SMD WK2192CS3D- 7H
SPI_CN1	SPI Pin Header	PIN HEADER 4x2P 2.54mm 180D(M) SMD 21N22564
SW2	Reset Button	TACT SW STS-091 SMD 4P H=3.8mm
SW4	SLP Button	TACT SW STS-091 SMD 4P H=3.8mm
SW5	Power Button	TACT SW STS-091 SMD 4P H=3.8mm
USB0_OTG1	USB OTG	Micro USB 5P/0.65mm/(F)/NY9T/GFL/ RA/S/BK/B
USB-4-5	USB Port 4, Port 5	PIN HEADER 2x5P 2.0mm 180D(M) SMD 21N22050

Rear I/O 

Position	Description	Name
DCIN	DC Jack	A
CN15A	UART Port 0	B
CN15B	UART Port 2	C
CN1A	DP Port	D
CN1B	HDMI Port	E
CN33	Type C Controller Programming Header (Reserved Only)	F
CN34	USB Type C	G
CN8	GbE Ethernet Connector Port	H
CN3	USB Port 1/ 2	I
Audio1	MIC Input/ Audio Output	J

接口引脚定義 (Pin definitions)

• 電池(BAT1) & 電池扣(BH1)
• CAN(CAN1,CAN2)
• 串口(COM_DB(COM3)、COM1、UART0 、UART2)
• 显示接口(LVDS、LVDS Backlight、HDMI、DP)
• LAN接口(LAN)
• USB接口(USB1-2、USB-4-5、USB Type C、USB OTG)
• 音频接口(Audio Output &Audio Codec)
• 电源及指示灯和开关机复位按钮(Power 、LED、Power Button、Reset Button、Sleep Button) 
• GPIO接口
• MINI_PCIE接口_M.2接口_SPI、I2C_接口

机械尺寸  (Mechanical Characteristics)

ROM-7720

快速入门 (Quick Start)

Linux 燒錄方法 (Linux Flash eMMC Method)

使用Flash tool 燒錄鏡像到eMMC (Flash image into eMMC by Flash Tools) 

Step0: 檢查SD卡在Linux 環境的代號 (check SD card symbol in Linux system) 

Step1: 創造一張可開機的SD 卡 (Create a bootable SD card)

Step2: 將可開機的SD 卡插入底板SD卡卡槽(Plug the SD card into Carrier board 's SD card slot)

 

Step 3: 確認開機選擇指撥開關 

           SD 卡開機模式(Boot swtich for SD card ):

           2-3-4 is "ON" for SD

           eMMC 開機模式(Boot switch for eMMC ) : 

            4 is "ON" for eMMC 

Step 4:打開電源 和 終端機 (Turn on the Power & Terminal)

      

       

 

 

     

 

Step 5: Flash iamge tools 檔案( Flash image tool )

  1. 插入U盤到你的Ubuntu 電腦上 (Plug the USB Disk into your device )

  2. 檢視U盤在Ubuntu 系統代號 (Check the USB Disk's symbol in Ubuntu System) 

 3. 掛載U盤在Ubuntu 系統中 

4.   複製檔案到U盤中 (Copy the flash file to system) 

5.  解壓縮(Unzip the file )

       

       

6. 

7. 

8. Execute the flash image tool 

   

  

 

9. 移除 SD Card ( Unplug the SD card ) 

10 測試 eMMC 開機 

          Note : eMMC 開機模式(Boot switch for eMMC ) : 

                      4 is "ON" for eMMC 

   

---

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

      Display Setting (ROM-7720)

      U-boot Command :

setenv fdt_file xxxx.dtb
env save
boot 

 

• Display
  • HDMI
    • adv-imx8qm-rom7720-a1.dtb
  • LVDS
    • g070vw01
      • adv-imx8qm-rom7720-a1_lvds0.dtb
      • adv-imx8qm-rom7720-a1_lvds1.dtb
    • g215hvn01
      • adv-imx8qm-rom7720-a1_lvds_dual.dtb
  • HDMI + LVDS
    • HDMI + g070vw01
      • adv-imx8qm-rom7720-a1_hdmi_lvds0.dtb
      • adv-imx8qm-rom7720-a1_hdmi_lvds1.dtb
    • HDMI + g215hvn01
      • adv-imx8qm-rom7720-a1_hdmi_lvds_dual.dtb
  • LVDS to HDMI
    • adv-imx8qm-rom7720-a1-it6263.dtb
• Audio Codec
  • adv-imx8qm-rom7720-a1-sgtl5000.dtb

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)

Command : 

# killall wpa_supplicant
# ifconfig wlan0 up
# wpa_passphrase "SSID" "PASSWORD" > /tmp/wpa.conf
# wpa_supplicant -BDwext -iwlan0 -c/tmp/wpa.conf
# udhcpc -b -i wlan0'''

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

4G使用方法(4G Testing Method)

Command:
Test 4G: (EWM-C117FL06E - USB)
Step 1: Connect EWM-C117FL06E to Mini PCIE slot on 9680015491 and connect
the card to CN6 PCIe_D slot on ROM-DB5901.
Step 2: Connect the antenna 1750007990-01 to the SMA (F) connector on
9680015491
and connect the IPEX connector to MT1 on EWM-C117FL06E module.
Step 3: Connect the Mini USB cable from 9680015491 to USB 2.0 Type A port on
ROM-DB5901.
Step 4: Power on and execute the pppd command to connect to the network.

GPIO使用方法(GPIO Operating Method)

 

Loop-back Test (Take GPIO4 and GPIO5 as examples)  

Step 1: Connect GPIO4 and GPIO5
Step 2: Export GPIO interface

root@imx8qxprom5620a1 : ~# echo 456 > /sys/class/gpio/export
root@imx8qxprom5620a1 : ~# echo 452 > /sys/class/gpio/export

Step 3: Set direction

root@imx8qxprom5620a1 : ~# echo out > /sys/class/gpio/gpio1/direction
root@imx8qxprom5620a1 : ~# echo in > /sys/class/gpio/gpio2/direction

Step 4: Read value and set output value then check

root@imx8qxprom5620a1 : ~# cat /sys/class/gpio/gpio2/value
0r
oot@imx8qxprom5620a1 : ~# echo 1 > /sys/class/gpio/gpio1/value
root@imx8qxprom5620a1 : ~# cat /sys/class/gpio/gpio2/value
1

串口使用方法(Serial Port Operating Method)

RS-232 Test 

SW7 Setting (SW7設置) 

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温度(Check CPU Temperature)

    root@imx8qxprom5620a1:/# cat /sys/devices/virtual/thermal/thermal_zone0/temp 44600

    # 或者直接以度爲單位顯示 echo $[$(cat /sys/class/thermal/thermal_zone0/temp)/1000]° >>> 45°

      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)

root@imx8qxprom5620a1:/# busybox free -m
             total       used       free     shared    buffers     cached
Mem:       1794920     516080    1278840      17252      9852        80292
-/+ buffers/cache:     425936    1368984
Swap:            0          0          0

      查看存储容量(Check Storage Capacity)

root@imx8qxprom5620a1:/# busybox df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                13.4G      1.7G     11.1G  13% /
devtmpfs                395.8M      4.0K    395.8M   0% /dev
tmpfs                   876.4M         0    876.4M   0% /dev/shm
tmpfs                   876.4M     16.5M    859.9M   2% /run
tmpfs                   876.4M         0    876.4M   0% /sys/fs/cgroup
tmpfs                   876.4M      4.0K    876.4M   0% /tmp
tmpfs                   876.4M    280.0K    876.2M   0% /var/volatile
/dev/mmcblk0p2           13.6G      1.7G     11.3G  13% /run/media/mmcblk0p2
/dev/mmcblk0p1           63.9M     23.4M     40.5M  37% /run/media/mmcblk0p1
/dev/mmcblk1p1           63.9M     23.4M     40.5M  37% /run/media/mmcblk1p1
tmpfs                   175.3M     88.0K    175.2M   0% /run/user/0
root@imx8qxprom5620a1:/#

      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) 

     root@imx8qxprom5620a1:/# systemctl stop ntpdate.service
     root@imx8qxprom5620a1:/# date 090816072021 && hwclock -w && date
             Wed Sep  8 16:07:00 UTC 2021
             Wed Sep  8 16:07:00 UTC 2021
     root@imx8qxprom5620a1:/# date
             Wed Sep  8 16:07:06 UTC 2021
     root@imx8qxprom5620a1:/#'''