ROM-7720 user guide

Contents

• 1產品介紹(Product introduction ) 1.1產品特性(Product Features) 1.2產品官網連結(Product official website link)
• 2硬件接口說明(Hardware interface introduction) 2.1接口布局和尺寸(Layout and Sizes) 2.2ROM-7720 接口布局圖 Board Dimension Layout 2.3ROM-DB7503 接口布局圖 Board Dimension Layout 2.4主板内置插针式引脚排序方式 (Pin Header defination) 2.5Internal I/O 2.6Rear I/O 2.7接口引脚定義 (Pin definitions) 2.8机械尺寸  (Mechanical Characteristics)
• 3快速入门 (Quick Start) 3.1系统下载 (OS Download) 3.2Linux 燒錄方法 (Linux Flash eMMC Method)
• 4Linux系统的基本使用(Linux System Basic Operating Method) 4.1UUU 使用方法(USB Connection (OTG port)) 4.2Display Setting (ROM-7720) 4.3乙太網路使用方法(Ethernent Testing Method) 4.4WiFi使用方法(WIFI Testing Method) 4.54G使用方法(4G Testing Method) 4.6GPIO使用方法(GPIO Operating Method) 4.7串口使用方法(Serial Port Operating Method) 4.8蓝牙使用方法(BlueTooth Operating Method) 4.9Audio Test: 4.10Audio - SGTL5000 4.11通用方法(General Method) 4.12查看CPU温度(Check CPU Temperature) 4.13查看CPU频率(Check CPU Frequency) 4.14查看内存容量(Check Memory Capacity) 4.15查看存储容量(Check Storage Capacity) 4.16網路Ping測試(Ping Network Testing) 4.17設置RTC (RTC Setting)
• 5Linux BSP編譯方法(Linux BSP Compile Method) 5.1Yocto 3.0 5.2Yocto2.5

產品介紹(Product introduction )

產品特性(Product 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

產品官網連結(Product official website link)

ROM-7720

硬件接口說明(Hardware interface introduction)

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

主板内置插针式引脚排序方式 (Pin Header defination)

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 24.923.48.9 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)

系统下载 (OS Download)

• Linux系统 (Linux OS)

Yocto 3.0

Yocto 2.5

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 )

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

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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))

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)

GPIO	command
1/2	488/489
3/4	353/354
5/6	298/299
7/8	300/301

GPIO

$ function test_gpio_pair() {

cd /sys/class/gpio

local GO=$1 GI=$2

echo gpio$GO output to gpio$GI

echo $GI > export; echo $GO > export

echo out > gpio$GO/direction; echo in > gpio$GI/direction

echo 1 > gpio$GO/value; echo "$GO:$(<gpio$GO/value) ==> $GI:$(<gpio$GI/value)"

echo 0 > gpio$GO/value; echo "$GO:$(<gpio$GO/value) ==> $GI:$(<gpio$GI/value)"

echo $GI > unexport; echo $GO > unexport

cd - > /dev/null

}

上表的GPIO18 對應到下圖的 GPIO07，注意: 並非插槽針腳的編號

ROM-DB7503-SCA1E w/ ROM-7720	i.MX8	pinmux	IMX_GPIO_NR(bank, pin) (480 - (bank * 32) + (pin & 0x1f))
GPIO0	M40_GPIO0_00	IMX8QM_M40_GPIO0_00_LSIO_GPIO0_IO08	488
GPIO1	M40_GPIO0_01	IMX8QM_M40_GPIO0_01_LSIO_GPIO0_IO09	489
GPIO2	FLEXCAN2_RX	IMX8QM_FLEXCAN2_RX_LSIO_GPIO4_IO01	353
GPIO3	FLEXCAN2_TX	IMX8QM_FLEXCAN2_TX_LSIO_GPIO4_IO02	354
GPIO4	ENET1_RGMII_TXC	IMX8QM_ENET1_RGMII_TXC_LSIO_GPIO6_IO10	298
GPIO5	ENET1_RGMII_TX_CTL	IMX8QM_ENET1_RGMII_TX_CTL_LSIO_GPIO6_IO11	299
GPIO6	ENET1_RGMII_TXD0	IMX8QM_ENET1_RGMII_TXD0_LSIO_GPIO6_IO12	300
GPIO7	ENET1_RGMII_TXD1	IMX8QM_ENET1_RGMII_TXD1_LSIO_GPIO6_IO13	301

GPIOCHIP info(Yocto3.0):

串口使用方法(Serial Port Operating Method)

RS-232 Test

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

Audio Test:

Audio - SGTL5000

Get sgtl5000 device

$ HW=$(aplay -l | grep "^card.sgtl5000" | sed "s/^card //;s/:.//"); echo HW=$HW

Use amixer ,and set sgtl5000 headphone / PCM volume

$ amixer -c $HW sset 'Headphone' 90%

$ amixer -c $HW sset 'PCM' 90%

Voice Testing:

$ VA=~/video_audio.mp4 # video file

$ gst-launch-1.0 filesrc location=$VA ! decodebin ! audioconvert ! audioresample ! alsasink device=hw:$HW

通用方法(General Method)

查看CPU温度(Check CPU Temperature)

root@imx8qmrom7720a1:/# cat /sys/devices/virtual/thermal/thermal_zone0/temp
65400
root@imx8qmrom7720a1:/#

    # 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@imx8qmrom7720a1:/# busybox free -m
             total       used       free     shared    buffers     cached
Mem:       1792540     563488    1229052      17504      18460     139496
-/+ buffers/cache:     405532    1387008
Swap:            0          0          0
root@imx8qmrom7720a1:/#

查看存储容量(Check Storage Capacity)

root@imx8qmrom7720a1:/#  busybox df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                12.8G      2.3G      9.9G  19% /
devtmpfs                394.6M      4.0K    394.6M   0% /dev
tmpfs                   875.3M         0    875.3M   0% /dev/shm
tmpfs                   875.3M     16.5M    858.8M   2% /run
tmpfs                   875.3M         0    875.3M   0% /sys/fs/cgroup
tmpfs                   875.3M      4.0K    875.3M   0% /tmp
tmpfs                   875.3M    500.0K    874.8M   0% /var/volatile
/dev/mmcblk0p5            7.7M     45.0K      7.3M   1% /run/media/mmcblk0p5
/dev/mmcblk0p1          127.7M     23.9M    103.8M  19% /run/media/mmcblk0p1
/dev/sda1                58.1G      9.5G     48.6G  16% /run/media/sda1
/dev/mmcblk0p6          739.9M    776.0K    685.4M   0% /cache
tmpfs                   175.1M     88.0K    175.0M   0% /run/user/0
root@imx8qmrom7720a1:/#

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@imx8qmrom7720a1:/#  systemctl stop ntpdate.service
root@imx8qmrom7720a1:/# date 031516072023 && hwclock -w && date
Wed Mar 15 16:07:00 UTC 2023
Wed Mar 15 03:46:31 UTC 2023
root@imx8qmrom7720a1:/# date
Wed Mar 15 03:46:39 UTC 2023
root@imx8qmrom7720a1:/#

Linux BSP編譯方法(Linux BSP Compile Method)

Yocto 3.0

Yocto2.5

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