Avnet MaaXBoard Mini User manual

MaaXBoard Mini
Android User Manual
V1.0

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Copyright Statement:
The MaaXBoard Mini single board computer and its related intellectual property are owned by
Avnet Manufacturing Services.
Avnet Manufacturing Services has the copyright of this document and reserves all rights. Any part
of the document should not be modified, distributed or duplicated in any approach and form without
the written permission issued by Avnet Manufacturing Services.
Disclaimer:
Avnet Manufacturing Services does not take warranty of any kind, either expressed or implied, as
to the program source code, software and documents provided along with the products, and
including, but not limited to, warranties of fitness for a particular purpose; The entire risk as to the
quality or performance of the program is with the user of products.
Regulatory Compliance:
MaaXBoard Mini single board computer has passed the CE, FCC & SRRC certification.

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Revision History
Rev. Description Author Date
V1.0 Initial version Sandy 20200519

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Catalog
Revision History ........................................................................................................................................... 3
Chapter 1 Introduction............................................................................................................................. 7
1.1 Package Content.................................................................................................................... 7
1.2 Feature List............................................................................................................................. 8
Chapter 2 Quick Start.............................................................................................................................. 9
2.1 Boot from SDCard .................................................................................................................. 9
Chapter 3 Feature Configuration & Introduction ....................................................................................11
3.1 Software version....................................................................................................................11
3.2 Developer options................................................................................................................. 12
3.2.1 Enable Developer options............................................................................................. 12
3.2.2 Common Important Options.......................................................................................... 13
3.3 USB Debug........................................................................................................................... 14
3.3.1 Enable USB Debugging ................................................................................................ 14
3.3.2 Connect to device ......................................................................................................... 15
3.3.3 Start and Connect ADB................................................................................................. 15
3.3.4 Issuing ADB Commands ............................................................................................... 16
3.3.5 Issue shell commands................................................................................................... 16
3.3.6 Install an app................................................................................................................. 17
3.3.7 Uninstall an app ............................................................................................................ 17
3.3.8 Copy files to/from a device............................................................................................ 18
3.4 Button ................................................................................................................................... 19
3.4.1 PWR .............................................................................................................................. 19
3.4.2 BACK & HOME ............................................................................................................. 20
3.4.3 Virtual Button................................................................................................................. 20
3.5 Display.................................................................................................................................. 21
3.5.1 Displayer ....................................................................................................................... 21
3.5.2 Display Settings ............................................................................................................ 21
3.6 Touch Screen........................................................................................................................ 22
3.7 Audio..................................................................................................................................... 23
3.7.1 Audio Devices ............................................................................................................... 23

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3.7.2 Play Audio ..................................................................................................................... 23
3.7.3 Volume Adjustment ....................................................................................................... 25
3.8 Camera................................................................................................................................. 26
3.8.1 MIPI-Camera................................................................................................................. 26
3.8.2 USB Camera ................................................................................................................. 27
3.9 ETH....................................................................................................................................... 28
3.10 Wi-Fi ..................................................................................................................................... 30
3.10.1 Enable and Disable Wi-Fi ............................................................................................. 30
3.10.2 Connect the Wi-Fi Network ........................................................................................... 32
3.10.3 Delete the network ........................................................................................................ 33
3.10.4 Wi-Fi Hotspot................................................................................................................. 34
3.11 Bluetooth 4.2 ........................................................................................................................ 35
3.11.1 Start Bluetooth .............................................................................................................. 35
3.11.2 Scan and Connect the Bluetooth Devices .................................................................... 37
3.12 LED....................................................................................................................................... 38
3.13 UART .................................................................................................................................... 38
3.13.1 UART1........................................................................................................................... 38
3.13.2 UART2........................................................................................................................... 39
3.14 Storage ................................................................................................................................. 40
3.15 USB 2.0 Interface ................................................................................................................. 40
3.15.1 USB Host....................................................................................................................... 40
3.15.2 USB Device................................................................................................................... 42
Chapter 4 Burn or update the system Image ........................................................................................ 45
4.1 Burn the System Image to SD Card under Windows OS .................................................... 45
4.2 Burn the System Image to SD Card under Android OS....................................................... 46
Chapter 5 Appendix............................................................................................................................... 47
5.1 Hardware .............................................................................................................................. 47
5.2 Software................................................................................................................................ 47
5.3 Android Develop................................................................................................................... 47
Chapter 6 Technical Support and Warranty .......................................................................................... 48
6.1 Technical Support................................................................................................................. 48
6.2 Warranty Conditions ............................................................................................................. 48

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Chapter 7 Contact Information .............................................................................................................. 50

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Chapter 1Introduction
1.1 Package Content
The content of software release package is subject to the actual release sources. For the file structure
and instructions, refer to the following table:
Release Folder tree
├─01Doc
│├─RN
││MaaXBoard_Mini-Android-ReleaseNote-Vxx.pdf
│└─UM
│MaaXBoard_Mini-Android-UserManual-Vxx.pdf
│MaaXBoard_Mini-Android-DevelopmentGuide-Vxx.pdf
└─02Android
├─01AndroidSourceCode
│readme.txt
├─02AndroidShipmentImage
│MaaXBoard_Mini-AndroidShipmentImage-Vxxx.img
└─03AndroidTo o l s
xxx.sh
01Doc Description
MaaXBoard_Mini-Android-ReleaseNote-Vxx.pdf Release Note
MaaXBoard_Mini-Android-
UserManual-Vxx.pdf User Manual
MaaXBoard_Mini-Android-DevelopmentGuide-Vxx.pdf Development Guide
01AndroidSourceCode Description
Readme.txt/xx.tar.gz Git Library path or Source Code package
02AndroidShipmentImage Description
MaaXBoard_Mini-AndroidShipmentImage-Vxxx.img Android system image file
03AndroidTools Description
xxx.sh Shell script to generate Android Image, etc.

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1.2 Feature List
U-Boot version: 2018.03
Kernel version: 4.14.98
Evaluation image Android P(9)
Development based on NXP i.MX 8M Mini
Micro SD boot
1 Gigabit Ethernet (RJ45)
4 USB 2.0 can work in Host or Device mode
2 UART (TTL) include debug port
External interfaces (I2C, UART, SPI, SAI and GPIO)
WIFI & BLE 4.2
MIPI-DSI Display
MIPI camera and USB Camera
Bluetooth audio
USB audio

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Chapter 2Quick Start
The default version of MaaXBoard Mini support boot up from SD Card only. To burn the image to SD Card,
refer to Chapter 4. For the hardware connection and accessories details, please check the QSG.
2.1 Boot from SDCard
Install the Serial Communication software (e.g. PUTTY), select the corresponding port number,
baudrate as 115200, data bits as 8, stop bits as 1, parity as none.
Connect the debug interface to PC with USB to TTL converter. Pin 6, 8 and 10 of J1 to the GND,
RXD and TXD pin of the USB to TTL converter. (optional)
Connect MIPI-DSI screen to J7
Insert the SD card (with pre-burned image) into the card slot J10.
Powered the board with a 5V, 2A, Type-C interface power (to J11).
When the system start up, the screen will show the Android boot up GUI.
After the boot, the screen will display the Android lock screen wallpaper.
Slide up to unlock the screen and enter HOME page.

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Chapter 3Feature Configuration & Introduction
This section will use MIPI-DSI screen version as example, introduces how to configure or use each
function of MaaXBoard Mini in Android OS.
First of all, please refer to the previous chapter and boot up the system. Then configure or use the
functions according to the following guidance.
3.1 Software version
Go to HOME page, slide up to show the APP list. Go to “Setting” -> “System” -> “About tablet”. Then you
will find software version as follows:

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3.2 Developer options
3.2.1 Enable Developer options
Develop options screen is hidden by default, to make it visible, go to “Setting” -> “System” -> “About tablet”
and tap “Build number” for 7 times. When you tap the option, it will prompt: You are now x steps away
from being a developer. Continue tap, until the system prompt: You are now a developer! Then go back to
the “System” page, you will find “Developer options”. Tap on this option, then you can enable or disable
the developer mode.
Note: After disable the Developer options, system settings screen will hide it again.

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3.2.2 Common Important Options
Developers options include some important settings, while ordinary users may not need, but very
important for developers, such as:
Stay awake
USB debugging
Default USB configuration
Input
Drawing
Apps

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3.3 USB Debug
In Android development, we often use the USB debug mode to connect development board. There are
many kinds of USB Debug applications on PC. Here we will with Android ADB and WIN7 as an example,
to introduce how to use the USB debugging capabilities.
Download address: https://developer.android.com/studio/releases/platform-tools
Or download directly from: https://dl.google.com/android/repository/platform-tools-latest-windows.zip
Reference Usage: https://developer.android.com/studio/command-line/adb
3.3.1 Enable USB Debugging
Enable USB Debugging in Developer options screen:

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3.3.2 Connect to device
After system set up, connect USB0 (the lower one in USB interface J2) to PC, Windows will install the
driver automatically, when done, you will find Android ADB Interface in device manager.
If the installation failed, operate the following:
1. Set the default USB connection to File Transfer in Developer options:
2. Windows will install the USB driver automatically. After that, you will find the following 2 devices in
device manager.
3.3.3 Start and Connect ADB
Run command line tool in Windows, go to the path of adb tool, execute adb devices to know what device
instances are connected to the adb server.
D:\work\platform-tools>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
193aca09dab45d9e device

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3.3.4 Issuing ADB Commands
You can issue adb commands to the board. The usage is:
adb [-d | -e | -s serial_number] command
If there's only one device connected, the adb command is sent to that device by default. Otherwise, you
need to use the -d, -e, or -s option to specify the target device to which the command should be directed.
For example:
D:\work\platform-tools>adb -s 193aca09dab45d9e pull sdcard/ ./sdcard2
sdcard/: 5 files pulled, 0 skipped. 0.8 MB/s (464703 bytes in 0.565s)
This operation copies the sdcard folder from the device (serial number: 193aca09dab45d9e) to the
develop machine, path of adb tool, sdcard2 folder.
3.3.5 Issue shell commands
You can use the shell command to issue device commands through adb, or to start an interactive shell. To
issue a single command use the shell command like this:
adb shell shell_command
for example:
D:\work\platform-tools>adb shell df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 1.6G 1.0G 613M 65% /
tmpfs 993M 448K 993M 1% /dev
tmpfs 993M 0 993M 0% /mnt
/dev/block/dm-1 244M 57M 182M 24% /vendor
/dev/block/mmcblk0p12 8.6G 86M 8.4G 1% /data
/data/media 8.6G 86M 8.4G 1% /storage/emulated
To start an interactive shell on a device:
adb shell
For example:
D:\work\platform-tools>adb shell
maaxboard_mini:/ $ su
su
maaxboard_mini:/ # ls
ls
acct dev init.usb.rc product
bin etc init.zygote32.rc res
bugreports init init.zygote64_32.rc sbin
cache init.environ.rc lost+found sdcard
charger init.rc mnt storage

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config init.recovery.freescale.emmc.rc odm sys
d init.recovery.freescale.rc oem system
data init.recovery.freescale.sd.rc postinstall ueventd.rc
default.prop init.usb.configfs.rc proc vendor
maaxboard_mini:/ #
To exit an interactive shell, press Control + D or type exit.
D:\work\platform-tools>adb shell
maaxboard_mini:/ $ ^D
D:\work\platform-tools>adb shell
maaxboard_mini:/ $ exit
3.3.6 Install an app
Execute commands:
adb install path_to_apk
For example:
D:\work\platform-tools>adb install D:\work\apk\com.shenyaocn.android.usbcamera.apk
Performing Streamed Install
Success
3.3.7 Uninstall an app
1. Check the installed apps
adb shell pm list packages
For example:
D:\work\platform-tools>adb shell pm list packages
package:com.android.cts.priv.ctsshim
package:com.android.internal.display.cutout.emulation.corner
package:com.example.android.livecubes
package:com.android.internal.display.cutout.emulation.double
package:com.android.providers.telephony
package:com.android.providers.calendar
……
package:com.shenyaocn.android.usbcamera
2. Uninstall the app
Execute commands:
adb uninstall package name
For example:
Search the package name for the app in above result, such as com.shenyaocn.android.usbcamera:

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D:\work\platform-tools>adb uninstall com.shenyaocn.android.usbcamera
Success
3.3.8 Copy files to/from a device
Use the pull and push commands to copy files to and from a device.
To copy a file or directory and its sub-directories from the device, execute the command: adb pull remote
local, for example:
D:\work\platform-tools>adb -s pull sdcard/ ./sdcard2
sdcard/: 5 files pulled, 0 skipped. 0.8 MB/s (464703 bytes in 0.565s)
To copy a file or directory and its sub-directories to the device, execute the command: adb push local
remote, for example:
D:\work\platform-tools>adb push D:\work\apk\com.shenyaocn.android.usbcamera.apk /sdcard
D:\work\apk\com.shenyaocn.android.usbcamera.apk: 1 file pushed, 0 skipped. 0.3 MB/s (21895207
bytes in 61.445s)

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3.4 Button
MaaXBoard Mini support 3 physical buttons: BACK, HOME and PWR.
3.4.1 PWR
1. Short press PWR button, system will enter sleep mode, press PWR again, the system will resume
from sleep mode.
2. Long press PWR, it will prompt 3 option on the right side of screen, “Power off”, “Restart”, and
“Screenshot”.

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3. In screen “Settings” -> “System” -> “Gestures”, enable option “Jump to camera”, then you can open
the system application: “Camera” quickly by press PWR twice.
3.4.2 BACK & HOME
HOME: Back to HOME page
BACK: Back to last screen
3.4.3 Virtual Button
In the bottom of the screen, there are three virtual buttons, in turn, “BACK” “HOME” “TASK”.
The function of BACK and HOME is the same with psychical button.
Tap TASK button to open recent task list, the you can switch to or clear all running applications.