ROM-2820 user guide

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Contents

產品介紹

產品特性(Features)

  • NXP Arm® Cortex®-A35 i.MX 8ULP Dual up to 1.0 GHz 
    *1 x Arm Cortex-M33 core 
    *Onboard LPDDR4 1GB, 2000MT/s memory 
    *1 x 4 lane MIPI-DSI ƒ 1 x USB2.0, 1 x USB 2.0 OTG, 5 x UART, 2 x I2C, 24 x GPIO, 6 x PWM, 1 x CAN 
    *Ultra small size form factor - OSM 
    *Support Ycoto Linux and Microsoft Azure Sphere OS 

 

產品官網連結(Product information Link)

ROM-2620

接口布局和尺寸(Layout and Sizes)

ROM-2620 接口布局圖 Board Dimension Layout 

ROM-2620 1.jpgROM-2620 2.jpg

 

ROM-ED91 接口布局圖 Board Dimension Layout

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

Internal I/O, Jummper/Switch List:

 

Rear I/O 

LED Function List 

 

Switch Settings 

 

接口引脚定義 (Connector Pin definitions)

机械尺寸  (Mechanical Characteristics)

ROM-2620

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快速入门 (Quick Start)

系统下载 (OS Download)

  • 'Linux系统 (Linux OS)'    

Yocto 4.0: IoTGateway/BSP/Linux/iMX8/OS Support List 4.0 release ROM-2620 - ESS-WIKI (advantech.com.tw)

Yocto 4.2: IoTGateway/BSP/Linux/iMX8/OS Support List 4.2 release ROM-2620 - ESS-WIKI (advantech.com.tw) 

 

 

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) 

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

Command :

~$ sudo dd if=2620A1AIM34LIVC0054_iMX8ULP_1G_flash_tool/image/imx-image-full-imx8ulprom2620a1-20230627062759.rootfs.wic of=/dev/sde bs=1M conv=fsync status=progress

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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)

Step3: 確認開機選擇指撥開關

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Step4:打開電源 和 終端機 (Turn on the Power & Terminal) RTENOTITLE Step5: 複製flash tool到U盤中, 解壓縮flash tools檔案,(copy to USB Disk, then unzip the flash tools file)(Test with 32G SD card)     複製檔案到U盤中 (Copy the flash file to USB Disk), 解壓縮flash tool到home目錄(Unzip the file to home)
  1. tar zxvf /run/media/New\ Volume-sda/2620A1AIM34LIVC0054_iMX8ULP_1G_flash_tool.tgz -C ~ 
RTENOTITLE 5. 進入flsah tool下的mk_inand資歷夾, 執行指令./mksd-linux.sh /dev/mmcblk0燒錄image到eMMC(Connect USB Disk to ROM-2620 system, extract the flash tool and browser to mk_inand folder and execute flash shell script "./mksd-linux.sh /dev/mmcblk0" 解壓縮後如果沒有mksd-linux.sh檔案, 可以到以下連結下載並複製到mk_inand資料夾下(If there is no mksd-linux.sh file in mk_inand directory. Please download from the link below and place it in mk_inand directory: mksd-linux.sh
RTENOTITLE 6. 切換開機switch來設定成從eMMC開機(Change boot switch to boot from eMMC. Reboot system).      

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<br/>    Data 数据位：8<br/>    Parity 奇偶校验：无<br/>    Stop 停止位：1<br/>    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))

Connect USB cable to USB OTG port.

Change boot switch to "SW1301 all OFF, SW1302: 5_6:on" to boot from force recovery mode.

 

RTENOTITLE Download uuu tool from link below: Releases · nxp-imx/mfgtools (github.com) The uuu verison we tested is 1.4.193: uuu uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.4.193-0-ge56424c Perpare uboot and image files below: 2620A1AIM34LIVC0064_iMX8ULP_1G_imx-boot.tgz
2620A1AIM34LIVC0064_iMX8ULP_1G_flash_tool.tgz 1. Download uuu
$ wget https://github.com/nxp-imx/mfgtools/releases/download/uuu_1.4.193/uuu
$ chmod a+x uuu
$ tar zxvf 2620A1AIM34LIVC0064_iMX8ULP_1G_imx-boot.tgz
$ tar zxvf 2620A1AIM34LIVC0064_iMX8ULP_1G_flash_tool.tgz
 
Type command below to flash eMMC:
$ sudo ./uuu -b emmc_all 2620A1AIM34LIVC0064_iMX8ULP_1G_imx-boot/imx-boot-imx8ulprom2620a1-1G.bin-flash_singleboot_m33 2620A1AIM34LIVC0064_iMX8ULP_1G_flash_tool/image/imx-image-full-imx8ulprom2620a1-20230901105531.rootfs.wic
 
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Display Setting (ROM-2620)

      U-boot Command :

  • Display 
    => setenv fdtfile imx8ulp-rom2620-a1-lt9211.dtb
    => saveenv
    => boot
     
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=== Audio(Audio Testing Methid) ===
# cat /proc/asound/cards
 
0 [sgtl5000 ]: sgtl5000 - sgtl5000 
                sgtl5000
# amixer set Mic 50%
# amixer set Lineout 100%
# amixer set PCM 100%
 
Record and playback:
# arecord -t wav -c 2 -r 44100 -d 10 /tmp/mic.wav
# aplay /tmp/mic.wav
 
 

M.2 WiFi/BT測試方法(M.2 WiFi/BT Testing Method)

  • Test Wi-Fi with EWM-W167 on C0048 version: Change SD_SLT to 2-3 
    => setenv fdtfile imx8ulp-rom2620-a1-m2-sdio.dtb
    => saveenv
    => boot
     
    In Linux user space:
    # iwconfig
    # ifconfig wlan0 up
    # iwlist wlan0 scan | grep ESSID
    # killall wpa_supplicant
    # ifconfig wlan0 up
    # wpa_passphrase "Pilimao" "0913079939" > /tmp/wpa.conf
    # wpa_supplicant -BDwext -iwlan0 -c/tmp/wpa.conf
    # udhcpc -b -i wlan0
    # ping 8.8.8.8
     
    Add name server: nameserver 8.8.8.8 in resolv.conf file
    # vi /etc/resolv.conf
    # ping google.com
     
    Test BT:
    # cd /opt/rtl8723bs_bt/
    # ./start_bt.sh ttyLP0
    # hciconfig hci0 up
    # hciconfig
    # bluetoothctl
    # discoverable on
    # pairable on
    # scan on
    # info 84:C5:A6:D3:AF:E4
    # pair 84:C5:A6:D3:AF:E4
    # connect 84:C5:A6:D3:AF:E4
    # paired-devices
    # disconnect 84:C5:A6:D3:AF:E4
    # remove 84:C5:A6:D3:AF:E4
     
    *Test Wi-Fi with EWM-W194M201E Module (SDIO Interface) 
Step 1: Press enter after boot. The system will stop at u-boot, and change dtb file by below command.
=> setenv fdtfile imx8ulp-rom2620-a1-m2-sdio-88w8997.dtb
=> saveenv
=> boot
 
Step 2: Install driver by below command.
# rmmod mwifiex_sdio mwifiex
# modprobe moal mod_para=nxp/wifi_mod_para.conf
# modprobe btnxpuart
 
Step 3: WIFI test command.
# ifconfig mlan0 up
# wpa_passphrase ASUS-917C qwert12345 > /tmp/wpa.conf
# wpa_supplicant -d -B -i mlan0 -c /tmp/wpa.conf
# udhcpc -i mlan0
 
*Test Bluetooth with EWM-W194M201E Module (UART Interface) 

Step 1: Please refer to above step 1.
Step 2: Please refer to above step 2.

Step 3: Bluetooth test 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
 
 

 

Serial Port測試方法(Serial Testing Method)(COM A/C)

  • RS-232 Loopback Test (eg. COMA: ttyLP0): 
Step 1: First change ROM-ED91 SW1201 to ‘01’.
Step 2: Run test command.
# stty -F /dev/ttyLP0 speed 115200 -echo
# cat /dev/ttyLP0 &
# echo test > /dev/ttyLP0
 
*RS-422 Test: 

Step 1: First change ROM-ED91 SW1201 to ‘11’.
Step 2: Test RS-422 with Adam-4520. Connect Adam-4520 with COMA with DB9 as the following:

Adam-4520 RX- <-->ROM-2620 COMA DB9 Pin 1,
Adam-4520 RX+ <-->ROM-2620 COMA DB9 Pin 2,
Adam-4520 TX- <-->ROM-2620 COMA DB9 Pin 4,
Adam-4520 TX+ <--> ROM-2620 COMA DB9 Pin 3

Step 3: Run below command:
# stty -F /dev/ttyLP0 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
# cat /dev/ttyLP0 &
# echo "Serial Test" > /dev/ttyLP0
 
*RS-485 Test: 

Step 1: First change ROM-ED91 SW1201 to ‘10’.
Step 2: Test RS-485 with Adam-4520. Connect Adam-4520 with COMA with DB9 as the following:

Adam-4520 Data- <-->ROM-2620 COMA DB9 Pin 1,
Adam-4520 Data+ <-->ROM-2620 COMA DB9 Pin 2

Step 3: Run below command:
# stty -F /dev/ttyLP0 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
# cat /dev/ttyLP0 &
# echo "Serial Test" > /dev/ttyLP0
 
 

 

 

I2C測試方法(I2C Testing Method)

Step 1: Plug in ROM-EG70
Step 2: Test by below command (eg. I2C-6 I2C_1101):
# modprobe at24
# echo -n $'\x06\x05\x04\x03\x02\x01' > test
# dd if=test of=/sys/bus/i2c/devices/6-0050/eeprom
# hexdump -C /sys/bus/i2c/devices/6-0050/eeprom -n 64
 
 

 

USB測試方法(USB Testing Method)

USB disk test (USB 2.0)
Step 1: Issue the following command (lsusb -t) after inserting a USB disk into the USB 2.0 port to check if the USB device is listed. Step 2: Test (eg. if usb disk is /dev/sda)
# dd if=/dev/urandom of=data bs=1 count=1024
# dd if=/dev/sda of=backup bs=1 count=1024 skip=4096 # dd if=data of=/dev/sda bs=1 seek=4096
# dd if=/dev/sda of=data1 bs=1 count=1024 skip=4096 # diff data data1
# dd if=backup of=/dev/sda bs=1 seek=4096
 
 

 

RTC測試方法(RTC Testing Method)

Step 1: Set system time to current, then write to RTC
# date 021010452023 && hwclock -w && date
 
Step 2: Set one incorrect time, then read time from RTC to verify
# date 010100002000 && hwclock -r && date
 
 

eMMC/SD測使方法(eMMC/SD Testing Method)

Device Routes
eMMC: /dev/mmcblk0 
SD: /dev/mmcblk2

Test (eg. emmc)

Step 1: Test command:
# dd if=/dev/urandom of=data bs=1 count=1024
# dd if=/dev/mmcblk0 of=backup bs=1 count=1024 skip=4096
# dd if=data of=/dev/mmcblk0 bs=1 seek=4096
# dd if=/dev/mmcblk0 of=data1 bs=1 count=1024 skip=4096
# diff data data1
# dd if=backup of=/dev/mmcblk0 bs=1 seek=4096
 
 

乙太網路使用方法(Ethernent Testing Method)

Command : ifconfig 

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

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GPIO使用方法(GPIO Operating Method)

GPIO pin:

GPIO Loopback Test (Using GPIO1 and GPIO2 as examples) Step 1: Connect GPIO1 and GPIO2 Step 2: Export GPIO interface
# echo 416 > /sys/class/gpio/export
# echo 417 > /sys/class/gpio/export
 
Step 3: Set GPIO direction
# echo out > /sys/class/gpio/gpio1/direction
# echo in > /sys/class/gpio/gpio2/direction
 
Step 4: Read value and set output value than check
# cat /sys/class/gpio/gpio2/value 0
# echo 1 > /sys/class/gpio/gpio1/value
# cat /sys/class/gpio/gpio2/value
1
 
=== Camera使用方法(Camera Testing Method) ===

MIPI-CSI0 (Tested with OV5640 + mini-SAS to MIPI-CSI Cable): OV5640 CSI (CN701): Connect OV5640 camera to EG-55 CAM3

Step 1: Take pictures
# gst-launch-1.0 v4l2src num-buffers=1 device=/dev/video0 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=sample.jpeg
 
Step 2: View on panel
# gplay-1.0 sample.jpeg
 
 

PWM測試方法(PWM Testing Method)

Please use oscilloscope to check waveform.

PWM1:
# echo 4 > /sys/class/pwm/pwmchip0/export
# echo 1000000 > /sys/class/pwm/pwmchip0/pwm4/period
# echo 500000 > /sys/class/pwm/pwmchip0/pwm4/duty_cycle
# echo 1 > /sys/class/pwm/pwmchip0/pwm4/enable
 
PWM2:
# echo 5 > /sys/class/pwm/pwmchip6/export
# echo 1000000 > /sys/class/pwm/pwmchip6/pwm5/period
# echo 500000 > /sys/class/pwm/pwmchip6/pwm5/duty_cycle
# echo 1 > /sys/class/pwm/pwmchip6/pwm5/enable
 
PWM3:
# echo 2 > /sys/class/pwm/pwmchip6/export
# echo 1000000 > /sys/class/pwm/pwmchip6/pwm2/period
# echo 500000 > /sys/class/pwm/pwmchip6/pwm2/duty_cycle
# echo 1 > /sys/class/pwm/pwmchip6/pwm2/enable
 
PWM4:
# echo 3 > /sys/class/pwm/pwmchip6/export
# echo 1000000 > /sys/class/pwm/pwmchip6/pwm3/period
# echo 500000 > /sys/class/pwm/pwmchip6/pwm3/duty_cycle
# echo 1 > /sys/class/pwm/pwmchip6/pwm3/enable
 
PWM5:
# echo 4 > /sys/class/pwm/pwmchip6/export
# echo 1000000 > /sys/class/pwm/pwmchip6/pwm4/period
# echo 500000 > /sys/class/pwm/pwmchip6/pwm4/duty_cycle
# echo 1 > /sys/class/pwm/pwmchip6/pwm4/enable
 
 

M33 Function

We use default M-core firmware to verify each of IO feature. User should connect COME_DEBUG port to PC and there were show screen as demonstration below:

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Press C for test mode of CAN bus
Press Q for test mode of QSPI
Press M for test mode of LPSPI master
Press S for test mode of LPSPI slave
Press U for test mode of LPUART
About this firmware, user should note that if you want to switch to another test mode, you must reboot the system.

 

 

CAN Bus

Step 1: Prepare two pcs rom-2620. One for ‘Node A’ one for ‘Node B’
Step 2: Connect these two boards (HI-HI/LO-LO)
Step 3: The test steps and screen are as below :

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Step 4: Follow the figure (step1 - step4). If B node received data means test successful.

 

QSPI

Step 1: After select the test mode ‘Q’ to verify QSPI, you will see below screen.

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Step 2: This test program will perform QSPI erase/write automatically and show ‘successfully’ when it’s done.
Step 3: User can press any key to run again.

 

 

LPSPI

Step 1: Two pcs rom-2620. One for ‘Master’ one for ‘Slave’.
Step 2: Connection with these two boards by SPI Bus as below:

LPSPI3_PCS0 -- LPSPI3_PCS0
LPSPI3_GND -- LPSPI3_GND
LPSPI3_PCS1 -- LPSPI3_PCS1
LPSPI3_SCK -- LPSPI3_SCK
LPSPI3_SOUT -- LPSPI3_SIN
LPSPI3_SIN -- LPSPI3_SOUT

Step 3: One board select mode ‘M’ to be Master.
Step 4: The second board is specified to Slave by select mode ‘S’.
Step 5: The test screen as below:

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Step 6: Press any key at terminal of node master, it will execute the test again.

 

LPUART

Step 1: Change ROM-ED91 SW1203 to '01'.
Step 2: Connect COM-B and COM-E to PC.
Step 3: Set RTS/CTS flow control for COM-B in Putty.exe

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Step 4: After select the test mode ‘U’ to verify LPUART2, you will see below screen.

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Step 5: If tester can input any characters/strings and show that at COM-B means test successful.

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<br/>

 

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) ===
root@imx8ulprom2620a1:~# cat /sys/devices/virtual/thermal/thermal_zone0/temp<br/> 37000
=== 查看内存容量(Check Memory Capacity) ===
root@imx8ulprom2620a1:~# free -h<br/>                total        used        free      shared  buff/cache   available<br/> Mem:           895Mi       230Mi       469Mi        29Mi       195Mi       546Mi<br/> Swap:             0B          0B          0B<br/> root@imx8ulprom2620a1:~#<br/>
=== 查看存储容量(Check Storage Capacity) ===
root@imx8ulprom2620a1:~# df -hT<br/> Filesystem     Type      Size  Used Avail Use% Mounted on<br/> /dev/root      ext4       15G  3.9G  9.5G  30% /<br/> devtmpfs       devtmpfs  431M  4.0K  431M   1% /dev<br/> tmpfs          tmpfs     448M     0  448M   0% /dev/shm<br/> tmpfs          tmpfs     180M   20M  160M  11% /run<br/> tmpfs          tmpfs     4.0M     0  4.0M   0% /sys/fs/cgroup<br/> tmpfs          tmpfs     448M   76K  448M   1% /tmp<br/> tmpfs          tmpfs     448M  1.5M  447M   1% /var/volatile<br/> tmpfs          tmpfs      90M  4.0K   90M   1% /run/user/0<br/> /dev/mmcblk0p1 vfat       84M   32M   52M  38% /run/media/boot-mmcblk0p1<br/> /dev/mmcblk2p2 ext4       29G   11G   17G  40% /run/media/root-mmcblk2p2<br/> /dev/mmcblk2p1 vfat       84M   32M   52M  38% /run/media/boot-mmcblk2p1<br/> root@imx8ulprom2620a1:~#<br/>

 

=== 設置RTC (RTC Setting)  ===
root@imx8ulprom2620a1:~# systemctl stop ntpdate.service<br/> root@imx8ulprom2620a1:~# date 090816072021 && hwclock -w && date<br/> Wed Sep  8 16:07:00 UTC 2021<br/> Wed Mar  6 04:31:37 UTC 2024<br/> root@imx8ulprom2620a1:~# date<br/> Wed Mar  6 04:31:44 UTC 2024<br/> root@imx8ulprom2620a1:~#

 

查看系統時間 (Check the system) 

root@imx8ulprom2620a1:/# timedatectl
[   41.402592] kauditd_printk_skb: 6 callbacks suppressed
[   41.402611] audit: type=1334 audit(45.332:16): prog-id=15 op=LOAD
[   41.417884] audit: type=1334 audit(45.344:17): prog-id=16 op=LOAD
               Local time: Thu 1970-01-01 00:00:46 UTC
           Universal time: Thu 1970-01-01 00:00:46 UTC      
                 RTC time: Thu 1970-01-01 00:00:45            <-----  Real-Time Clock，RTC 
                Time zone: Universal (UTC, +0000)              <------ Time zone 目前
System clock synchronized: no
              NTP service: active
              RTC in local TZ: no         

Note : 

Change Time Zone  
<code data-highlighted="yes">sudo timedatectl set-timezone "Asia/Taipei"<br/> </code>

           Local time: Fri 2024-05-03 09:07:42 CST
           Universal time: Fri 2024-05-03 01:07:42 UTC
                RTC time: Fri 2024-05-03 09:07:42
                Time zone: Asia/Taipei (CST, +0800)
System clock synchronized: yes
              NTP service: active
              RTC in local TZ: yes

Time Zone List 

 

$ sudo timedatectl list-timezones

Africa/Abidjan

Africa/Accra

Africa/Addis_Ababa

Africa/Algiers

Africa/Asmara

Africa/Bamako

Africa/Bangui

Africa/Banjul

Africa/Bissau

Africa/Blantyre

Africa/Brazzaville

Africa/Bujumbura

Africa/Cairo

Africa/Casablanca

Linux BSP編譯方法(Linux BSP Compile Method)

Yocto 4.2

=== Yocto 4.0 ===
 

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