EPC-R3720 user guide

1 資源特性(Features)
2 訂購資訊(Ordering Information)
3 規格(Specifications)
4 接口布局和尺寸(Layout and Sizes)
- 4.1 接口布局圖(Board Dimension Layout)
5 接口列表(Connector List)
- 5.1
- 5.2 機械尺寸(Mechanical Characteristics)
6 快速入門 (Quick Start)
- 6.1 系统下载 (OS Download)
7 Linux 燒錄方法 (Linux Flash eMMC Method)
8 Linux系统的基本使用(Linux System Basic Operating Method)
9 通用方法(General Method)
10 Linux BSP編譯方法(Linux BSP Compile Method)
- 10.1 Yocto 3.0

資源特性(Features)

NXP Arm® Cortex®-A53 i.MX8M Plus Quad/Dual up to 1.8 GHz
Onboard LPDDR4 4 GB / 6 GB, 4000MT/s memory
HDMI 1920x1080 at 60Hz, 1 Single or 1 Dual Channel 24 bit LVDS (or 1 4-Lane MIPI-DSI by BOM Option)
1 4-wire RS-232/422/485, 1 USB3.2 Gen1 By 1, 1 USB2.0, 1 Micro SD, 1 Mic. in / Line out
1 mini-PCIe for 3G/4G, 1 M.2 2230 Key E Slot
Supports Yocto Linux and Android
Support I/O Expansions boards by UIO40-Express

訂購資訊(Ordering Information)

規格(Specifications)

接口布局和尺寸(Layout and Sizes)

接口布局圖(Board Dimension Layout)

Front I/O

Rear I/O

接口列表(Connector List)

DC Power Jack (DC-IN)

USB Ports

LAN Ports

HDMI

COM_EPC-R3720/CAN_EPC

機械尺寸(Mechanical Characteristics)

快速入門 (Quick Start)

系统下载 (OS Download)

Dropbox link for imx8 Yocto 3.0 BSP and Image

'Linux系统 (Linux OS)'

Git BSP Tag Version

Product

BSP/Image

Date

Alpha Release

Beta Release

MP Release

Release Note

Comment

Release Owner

imx8LIVA0333.xml

RSB-3720

3720A1AIM30LIVA0333_iMX8MP_4G_2021-10-05.img.gz

3720A1AIM30LIVA0333_iMX8MP_6G_2021-10-05.img.gz

2021-10-05

Linux 燒錄方法 (Linux Flash eMMC Method)

1. 創建一個可以開機的SD Card (Create a bootable SD card )

先確認SD卡在Ubuntu 系統(x86) 所認到的SD卡代號 ( Check the SD card symbol in Ubuntu System (x86)

Command: sudo fdisk - l

2. 燒錄鏡像到SD 卡中. (Flash Image into SD card)

Command : sudo dd if=3720A1AIM30LIVA0333_iMX8MP_6G_2021-10-05.img of=/dev/sdf bs=1M conv=fsync

3. 將flash tool 拷貝到U盤 (Cpye the eMMC flash tool into USB Disk )

4. 設定終端機(Set Debug Terminal)

Debug 串口調試 (Debug port Setting)

以 Tera Term 為例介绍如何使用串口調試功能 ( Tera Term is kind of terminal tool , we need to set the parameter (Baud Rate , Data, Parity, Stop, Flow Control ) into "Tera Term terminal tool " )

   波特率(Baud Rate)：115200
   數據位(Data)：8
   奇偶校驗(Parity)：无 (none)
   停止位(Stop)：1
   流控(Flow Control)：无 (none)

Tera Term Tool

Check the Sriel port in Device Manager (查看PC端的串口號)：

if you can not identify the Serial device , please check your serial driver.

5. 將可開機的SD 卡插入 SD 插槽, 並打開電源開機 (Plug into the SD card into SD Card Slot , then turn on the power)

6. 確認撥碼開關為 SD 卡開機模式 (Check the Switch)

SD 卡開機: 1, 2 on (Set the SD card boot up mode , 1 on 2 on )

'eMMC 開機: '2 on ( Set the eMMC boot up mode , 2 on , others off)

7.打開電源,由終端機可看到開機訊息 (Turn on the power , you will see the debug message from Terminal tool )

8. 開機後請再重新開機一次,系統將會重新劃分磁區大小. (If you can not not copy the eMMC flash tool into root file system , please reboot the device , because , the system will the reconfigure the partition )

9. 燒錄eMMC前, 請將U盤插入USB port (Please pulg the USB Disk into USB port before flash eMMC)

10. 在系統確認U盤 (Check the USB disk in the Yocto System (Device side) )

11. 將flash tool 燒錄鏡像,拷貝到根目錄 (Copy the flash tool into root file system)

12. 解壓縮 flash tool (Unzip the flash tool )

13. 執行燒錄eMMC (Exeucte the eMMC flash script )

Note: eMMC : /dev/mmcblk2

14. 移除SD卡 ,重新開機,並切換撥碼開關 　（Remove the SD card , Change the Switch to eMMC mode , then reboot the system)

15. 從eMMC 開機,debug 訊息 (You will see the debug message when you boot up from eMMC flash )

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

Display Setting (RSB-3720)

U-boot Command

Display
- HDMI (default)
  - imx8mp-rsb3720-a1.dtb
- LVDS
  - g070vw01(LVDS0) + HDMI
    - imx8mp-rsb3720-a1-lvds0-auo.dtb
  - g070vw01(LVDS1) + HDMI
    - imx8mp-rsb3720-a1-lvds1-auo.dtb
  - g215hvn01(DUAL LVDS) + HDMI
    - imx8mp-rsb3720-a1-lvds-dual.dtb
- DSI
  - adv7535(DSI to HDMI) + HDMI
    - imx8mp-rsb3720-a1-adv7535.dtb
  - auog101uan02(DSI) + HDMI
    - imx8mp-rsb3720-a1-auog101uan02.dtb
Camera
- OV5640 (default)
  - imx8mp-rsb3720-a1.dtb
- Basler camrea
  - imx8mp-rsb3720-a1-basler.dtb

乙太網路使用方法(Ethernent Testing Method)

Command : ifconfig

Command: Ping 8.8.8.8

Change IP Addr Command:

Check Active Ethernet interface:

root@imx8mprsb3720a1:~# connmanctl services
*AR Wired ethernet_74fe485e4fbd_cable

Set static IP Addr:

connmanctl config <service> --ipv4 manual <ip address> <netmask> <gateway>
# connmanctl config <service> --nameservers <dns-addr>

Example:

root@imx8mprsb3720a1:~# connmanctl config ethernet_74fe485e4fbd_cable --ipv4 manual 192.168.1.100 255.255.255.0 192.168.1.254
root@imx8mprsb3720a1:~# connmanctl config ethernet_74fe485e4fbd_cable --nameservers 8.8.8.8 4.4.4.4

WiFi使用方法(WIFI Testing Method)

# killall wpa_supplicant
# ifconfig wlan0 up
# wpa_passphrase "SSID" "PASSWORD" > /tmp/wpa.conf
# cat /tmp/wpa.conf
# wpa_supplicant -BDwext -iwlan0 -c/tmp/wpa.conf
# udhcpc -b -i wlan0
# ifconfig
# ping 8.8.8.8
Add DNS to /etc/resolv.conf
# cat /etc/resolv.conf
# Generated by Connection Manager
nameserver 8.8.8.8
nameserver 8.8.4.4
Now can ping google.com
# ping google.com

4G使用方法(4G Testing Method)

Check and change module to pppd mode
# stty -F /dev/ttyUSB3 –echo
# cat /dev/ttyUSB3 &
# echo AT+UUSBCONF? > /dev/ttyUSB3

Change to pppd mode:
# echo AT+UUSBCONF=0 > /dev/ttyUSB3

# echo AT+CFUN=16 > /dev/ttyUSB3

The module will be change to ttyACM0*, check again
# stty -F /dev/ttyACM0 –echo
# cat /dev/ttyACM0 &
# echo AT+UUSBCONF? > /dev/ttyACM0

Set module to con
# stty -F /dev/ttyACM0 -echo
# cat /dev/ttyACM0 &
# echo AT+csq > /dev/ttyACM0
# echo AT+cops? > /dev/ttyACM0
# echo AT+cgdcont? > /dev/ttyACM0

Connect to Internet:
# pppd connect 'chat -v -s -t 10 "" "AT" "" "ATDT*99***4#" "CONNECT" ""' user username password password /dev/ttyACM2 460800 nodetach crtscts debug usepeerdns defaultroute &
# ifconfig

# ping 8.8.8.8

GPIO使用方法(GPIO Operating Method)

GPIO Pin	Number
GPIO2	501
GPIO4	503
GPIO5	504
GPIO6	505
GPIO7	506
GPIO8	507
GPIO9	508
GPIO10	509
GPIO11	139
GPIO12	138

Short GPIO pin 2 & pin 4

Short GPIO pin 5 & pin 6

Short GPIO pin 7 & pin 8

Short GPIO pin 9 & pin 10

Short GPIO pin 11 & pin 12

LED_USER使用方法(LED_USER ON/OFF test)

ON: echo 255 > /sys/class/leds/user/brightness
OFF: echo 0 > /sys/class/leds/user/brightness

COM1複合使用方法(COM1 complex Port Operating Method)

Set GPIO#496, #497
Set to 0,1 for RS-485
Set to 1,1 for RS-422
Set to 0,0 for loopback
Set to 1,0 for RS-232

RS-232 default as debug console)

RS-485 test
Test RS-485 with Adam-4520. Adam-4520 Pin to RSB-3720 COM1
Data- : Pin 1: COM_DCD
Data+ : Pin 3: COM_RXD

RS-485 test
# echo 496 > /sys/class/gpio/export
# echo 497 > /sys/class/gpio/export
# echo out > /sys/class/gpio/gpio1/direction
# echo out > /sys/class/gpio/gpio2/direction
# echo 0 > /sys/class/gpio/gpio1/value
# echo 1 > /sys/class/gpio/gpio2/value
# ./enable485 /dev/ttymxc2
# stty -F /dev/ttymxc2 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
# cat /dev/ttymxc2 &
# echo "Serial Test" > /dev/ttymxc2
Will print “Serial Test” through RS-485

RS-232 -- Disable console

Disable debug message output can also improve boot speed

Disable kernel message

setenv mmcargs setenv bootargs ${jh_clk} console=${console} modprobe.blacklist=${modprobe.blacklist} root=${mmcroot} video=HDMI-A-1:${videores} '''quiet'''
env save
reset

Or

Disable debug port

(1) Yocto machine setting:

modify /sources/meta-advantech/meta-fsl-imx/conf/machine$/${MC}.conf

SERIAL_CONSOLES = ";"

(2) Uboot parameter setting:

For the imx8mq, imx8mm, imx8mp:

setenv console disabled
env save
reset

藍牙使用方法(BlueTooth Operating Method)

# hciattach /dev/ttymxc0 bcm43xx 115200 flow
# hciconfig hci0 up
# hcitool scan# bluetoothctl
# discoverable on
#pairable on
# scan on
# scan off
# pair 84:C5:A6:D3:AF:E4
# connect 84:C5:A6:D3:AF:E4
Check BT connect info
# info 84:C5:A6:D3:AF:E4

音訊使用方法(BlueTooth Operating Method)

Line-in , Line-out, MIC
1.Line-out
Command : gplay-1.0
2.MIC
Command : arecord
Check audio codec:

# cat /proc/asound/cards
 0 [sgtl5000       ]: sgtl5000 - sgtl5000
                      sgtl5000
 1 [audiohdmi      ]: audio-hdmi - audio-hdmi
                      audio-hdmi
root@imx8mprsb3720a1:~#
   Set Mic/audio volume
# amixer set Mic 100%
# amixer set Lineout 100%
# amixer set PCM 100%

Record and playback
Example command:
# arecord –t wav –c 1 –r 44100 –d 5 /tmp/mic.wav
# aplay /tmp/mic.wav

Record from MIC:
# arecord -D plughw:0,0 -r 16000 -f S16_LE ./f-16000.wav
Recording WAVE './f-16000.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
# aplay f-16000.wav
Playing WAVE 'f-16000.wav' : Signed 16 bit Little Endian, Rate 16000 Hz, Mono

Play wav file from codec:
# aplay -D plughw:0,0 file_example_WAV_10MG.wav
Playing WAVE 'file_example_WAV_10MG.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

Play wav file from HDMI:
# aplay -D plughw:1,0 file_exam
ple_WAV_10MG.wav
Playing WAVE 'file_example_WAV_10MG.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

I2C 測試( I2C Test method)

Check I2C device (Audio codec: 0-000a)
# i2cdetect -y 0
I2C set and get:
# i2cset -f -y 0 0x0a 0 0xff00 w
# i2cget -f -y 0 0x0a 0 w
0x11a0

看門狗測試 (Watch Dog Test method)

System will reboot after 1 sec
# /unit_tests/Watchdog/wdt_driver_test.out 1 2 0

攝像頭測試(Camera Test method)

Check MIPI CSI camera 
MIPI CSI0:
MIPI CSI1:

MIPI CSI0 - ov5640
Preview:
# gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,width=640,height=480 ! waylandsink
Capture:
# gst-launch-1.0 v4l2src num-buffers=1 device=/dev/video0 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=sample.jpeg
MIPI CSI1 – ov5640
Preview:
# gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,width=640,height=480 ! waylandsink
Capture:
# gst-launch-1.0 v4l2src num-buffers=1 device=/dev/video1 ! video/x-raw,width=640,height=480 ! jpegenc ! filesink location=sample.jpeg

遠程訪問及文件傳輸(Remote Access and File Transimmion)

查看主板IP位址 ( check IP Address )：

        Command : ifconfig

Windows下SSH訪問及文件傳輸

SSH Remote Log into Device

SSH遠程登陸,以putty選擇putty.exe(或者使用Xshell、SecureCRT等類似軟件)
需要設置遠程設備的IP、通訊端口(默認22)、通訊方式錄后驗證用户名密碼

通用方法(General Method)

查看CPU温度(Check CPU Temperature)

    root@imx8mprsb3720a1:/# cat /sys/devices/virtual/thermal/thermal_zone0/temp   40000

    # 或者直接以度爲單位顯示 echo $[$(cat /sys/class/thermal/thermal_zone0/temp)/1000]° >>> 40°

查看CPU频率(Check CPU Frequency)

           cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 
           >> 1200000
           cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq    
           >> 1800000

查看内存容量(Check Memory Capacity)

root@imx8mprsb3720a1:/# busybox free -m
              total        used        free      shared  buff/cache   available
Mem:        6002524      393988     5517304       18460       91232     5507676
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)

Disable RTC sync service
# systemctl disable ntpd.service

# systemctl stop systemd-timesyncd
# systemctl stop ntpdate.service

Set system time to current, then write to RTC
# date 040710522021 && hwclock -w && date

Set incorrect time, then read time from RTC
# date 010100002000 && hwclock -r && date

Restart the RTC time to system time
# hwclock -s && date

Linux BSP編譯方法(Linux BSP Compile Method)

Yocto 3.0

如果有驗證上的錯誤請使用以下的方法 (if you have the build error , please use " git config --global http.sslverify false"

### repo sync failed with Server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
============================================================
export GIT_SSL_NO_VERIFY=1
#or
git config --global http.sslverify false
============================================================

Add git and vim into image:

Add below in "conf/local.conf" file:

IMAGE_INSTALL_append = " git-perltools vim "

For install vim in xwayland, please add below into "meta/recipes-support/vim/vim_8.1.1518.bb b/meta/recipes-support/vim/vim_8.1.1518.bb" fie:

PACKAGECONFIG_remove = " x11 "