To set the regulatory domain on the Sona MT320, two options are available:

  • Yocto option: Based on the MediaTek processor yocto image and adding wifitest recipe, which you will need to get from MediaTek yourself.
  • Android option: Based on the Tungsten 700 SMARC card and carrier board, and loading the Android pre-built image.

For this document, we will explore the setup based on the Android option.

Requirements

  • Tungsten700 SMARC
  • SMARC_CAR Development Kit
    • Universal SMARC Carrier Board
    • Dual DB9 Serial Cable
    • BD 5V Adapter
    • BD AC Cable
  • HDMI Cable
  • USB Type A to C Cable

ADB Tool and Driver Setup in Windows 10/11

  1. Install the ADB tool in Windows 10 / Windows 11 in order to access/debug the Android system via the Tungsten700 SOM. For detailed setup, please refer to the following link: https://www.ezurio.com/documentation/android-tools-for-nitrogen-platforms-on-windows10-11

  2. If using Windows 10, you may need the ADB driver (Windows 11 may have native support already): latest_usb_driver_windows.zip

  3. Connect the USB cable between Windows 10/11 PC and SMARC_CAR development Kit.

If the ADB driver works properly, you will see the Android device in device manager:

Or as an USB device as below:

ADB Tool to Access Android Device

Use standard Windows Command Prompt (cmd).

Type adb devices in Commmand Prompt. You should be able to find the device as below.

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
Install the latest PowerShell for new features and improvements! https://aka.ms/PSWindows
PS C:\Android\platform-tools> adb devices
* daemon not running; starting now at tcp:5037
* daemon started successfully
List of devices attached
0123456789ABCDEF        device

Then type the following commands. You should then be able to enter Tungsten700 SOM Android system.

_$ > adb root
_$ > adb disable-verity
_$ > adb remount
_$ > adb reboot  

The Tungsten700 Android system will reboot after this command. Wait until the system boots up, then type the next command:

_$ > adb shell

PS C:\Android\platform-tools> adb root
restarting adbd as root
PS C:\Android\platform-tools> adb disable-verity
disable-verity only works for userdebug builds
PS C:\Android\platform-tools> adb remount
remount succeeded
PS C:\Android\platform-tools> adb reboot
PS C:\Android\platform-tools> adb shell
aiot8390p6_64_bsp:/ $

Run into Test Mode via wifitest Tool

Follow the steps below under the ads shell command prompt:

  1. check soc_id:

     aiot8390p6_64_bsp:/ $ cat /sys/devices/soc0/soc_id
     MT8390AV/A
    
  2. Check if wifi interface is up (if not, you’ll need to enable WiFi via the Android panel):

    aiot8390p6_64_bsp:/ $ ifconfig 
    
    lo      Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope: Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 TX bytes:0
    
    dummy0  Link encap:Ethernet  HWaddr d6:3d:fa:ed:f9:32
            inet6 addr: fe80::d43d:faff:feed:f932/64 Scope: Link
            UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 TX bytes:140
    
    eth0    Link encap:Ethernet  HWaddr 66:dd:58:55:e8:da  Driver lan78xx
            UP BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 TX bytes:0
    
    eth1    Link encap:Ethernet  HWaddr 00:55:7b:b5:7d:f7  Driver dwmac-mediatek
            UP BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:0 TX bytes:0
            Interrupt:81 Base address:0x8000
    
    wlan0   Link encap:Ethernet  HWaddr 5e:67:44:f2:96:d8  Driver wlan
            UP BROADCAST MULTICAST  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:3000
            RX bytes:0 TX bytes:0
    
  3. Enter test mode with command wifitest -O

     aiot8390p6_64_bsp:/ # wifitest -O
     Query Ddie free block: 23 total block 60
     copy from /vendor/firmware/EEPROM_MT7961_1.bin to /data/EEPROM_MT7961_1.bin
     /data/EEPROM_MT7961_1.bin is ready
    
  4. Dump all data in EEPROM with command wifitest -H 1

     aiot8390p6_64_bsp:/ # wifitest -H 1
     current_mode is 1
     fread result 0
     open_eeprom_file (/data/EEPROM_MT7961_1.bin) size 2560 bytes
     main u4EepromSize 2560
      	0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
     0	61  79  00  00  e8  cb  f5  00  03  5c  00  00  00  00  00  00
     10	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     20	38  00  36  00  00  00  00  00  00  00  00  00  00  00  00  00
     30	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     40	93  4f  00  00  00  80  82  11  00  00  04  20  01  01  00  00
     50	05  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     60	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     70	00  00  00  00  00  87  08  00  00  00  01  00  00  00  00  00
     80	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     90	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     a0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     b0	00  00  00  00  00  00  00  00  00  00  00  00  b8  07  73  24
     c0	3e  89  17  6a  00  20  00  00  00  00  00  00  00  00  00  00
     d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  20
     e0	00  00  00  00  00  00  00  00  24  34  01  51  00  00  00  00
     f0	00  00  02  00  00  00  00  00  00  44  00  00  00  00  00  00
     100	00  04  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     110	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     120	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     130	00  00  00  00  00  00  00  00  67  e8  cb  f5  00  03  5d  00
     140	00  00  00  00  00  47  07  07  00  0c  0c  0f  00  11  00  00
     150	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     160	00  00  00  00  24  00  23  23  23  23  23  23  23  23  21  21
     170	21  21  21  21  1f  1f  1f  1f  00  00  00  00  00  00  00  00
     180	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     190	00  00  03  04  04  04  04  03  04  04  04  04  00  00  00  00
     1a0	00  00  83  83  83  83  83  83  83  83  83  83  83  83  83  83
     1b0	83  83  83  83  88  88  88  88  88  88  88  88  88  88  00  00
     1c0	83  83  83  83  83  83  83  83  83  83  85  85  88  88  88  88
     1d0	88  88  88  88  88  88  88  88  c4  c4  c4  c3  c3  c2  c1  00
     1e0	82  83  85  85  c4  c4  c4  c3  c3  c2  c1  00  82  83  85  85
     1f0	c4  c4  c4  c3  c3  c2  c1  00  82  83  85  85  c1  c1  c1  c1
     200	c1  c1  c1  c1  c1  c1  c1  c1  c1  c1  c1  00  82  82  c1  c1
     210	c1  c1  c1  c1  c1  00  82  82  82  82  82  82  82  82  82  82
     220	82  82  00  00  00  00  00  c1  c1  c1  c1  c1  c1  c1  00  82
     230	82  86  86  c1  c1  c1  c1  c1  c1  c1  00  82  82  87  87  82
     240	82  82  82  82  82  82  82  82  82  87  87  c5  c5  c5  c3  c3
     250	c2  c2  00  82  82  86  86  c5  c5  c5  c3  c3  c2  c2  00  82
     260	82  86  86  c5  c5  c5  c3  c3  c2  c2  00  82  82  86  86  00
     270	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     280	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     290	00  80  80  f5  fe  03  12  1f  80  80  f2  07  07  09  17  80
     2a0	80  e6  f4  fe  0b  18  e1  ed  f4  00  07  10  20  e1  ed  f4
     2b0	00  07  10  30  dc  e4  f0  f7  03  0a  13  00  00  00  00  00
     2c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     2d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     2e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     2f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     300	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     310	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     320	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     330	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     340	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     350	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     360	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     370	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     380	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     390	00  00  00  00  00  00  ff  92  10  88  b9  a1  12  0c  18  30
     3a0	60  65  c6  94  02  0c  18  30  60  e6  0a  10  82  10  80  00
     3b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     3c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     3d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     3e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     3f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     400	b7  a8  00  81  00  00  83  c8  00  05  00  00  00  00  00  8d
     410	00  00  00  00  00  0a  00  00  02  8b  8b  f3  e7  b9  89  c8
     420	4b  9e  1f  d2  a0  8a  a0  8a  a0  b9  00  6d  40  6d  40  00
     430	82  f9  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     440	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     450	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     460	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     470	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     480	00  e1  ed  f4  00  07  10  30  e1  ed  f4  00  07  10  30  d9
     490	e1  ed  f4  00  07  10  00  00  00  00  00  00  00  00  00  00
     4a0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     4b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     4c0	00  c1  00  80  82  84  84  82  82  82  00  00  00  00  00  00
     4d0	00  00  00  00  c2  00  80  82  84  80  80  80  80  00  00  00
     4e0	00  00  00  00  00  00  00  c4  00  80  84  84  84  84  80  82
     4f0	00  00  00  00  00  00  00  00  00  00  c4  00  80  84  82  80
     500	82  80  80  00  00  00  00  00  00  00  00  00  00  00  00  c0
     510	c1  00  00  00  00  00  00  00  81  00  00  00  00  00  00  00
     520	00  00  c1  00  00  00  00  00  00  00  00  81  00  00  00  00
     530	00  00  00  00  00  82  00  00  00  00  00  00  00  00  00  00
     540	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     550	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     560	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     570	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     580	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     590	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     5a0	06  32  00  66  66  66  66  66  66  66  66  aa  aa  aa  aa  aa
     5b0	aa  aa  aa  aa  aa  00  00  00  00  00  00  00  00  00  00  00
     5c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     5d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     5e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     5f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     600	28  1e  08  00  0a  01  08  02  0a  02  0a  01  0c  03  0b  08
     610	0a  06  0b  0d  05  85  0e  07  0c  08  10  09  0b  01  11  09
     620	10  06  05  84  8a  91  00  00  00  00  00  00  00  00  00  00
     630	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     640	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     650	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     660	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     670	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     680	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     690	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6a0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     6f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     700	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     710	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     720	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     730	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     740	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     750	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     760	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     770	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     780	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     790	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7a0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     7f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     800	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     810	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     820	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     830	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     840	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     850	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     860	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     870	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     880	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     890	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8a0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8c0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8d0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     8f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     900	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     910	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     920	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     930	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     940	03  83  00  83  83  0f  0f  00  00  00  00  00  00  00  00  6c
     950	6c  00  00  00  00  00  10  00  0e  00  0f  00  19  00  23  00
     960	01  01  01  01  00  00  00  00  00  00  00  00  06  06  06  06
     970	06  05  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     980	00  00  00  00  0d  1a  27  34  41  00  00  00  00  00  00  00
     990	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     9a0	00  0d  1a  27  34  41  00  00  00  00  00  00  00  00  00  00
     9b0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  0d  1a
     9c0	27  34  41  00  00  00  00  00  00  00  00  00  00  00  00  00
     9d0	00  00  00  00  00  00  00  00  00  00  00  0d  1a  27  34  41
     9e0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
     9f0	00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
    
  5. Use the command wifitest -C -J1 to open the file dumped from EEPROM and save the content to internal buffer. Set buffer mode to the firmware.

     aiot8390p6_64_bsp:/ # wifitest -C -J 1
     i-cal mode
     buffer_mode_content_source = 1
     Source from eeprom bin
     fread result 0
     open_eeprom_file (/data/EEPROM_MT7961_1.bin) size 2560 bytes
    
  6. Enable SingleSku TX power limitation with the command wifitest --stoplimit 0

     aiot8390p6_64_bsp:/ # wifitest --stoplimit 0
     Enable singleSKU TX power limitation
    

Most common commands in wifitest tool

You can use the wifitest command to decide which channel, which rate, which antenna to be configured during regulation test. Following are the most common test commands.

TX/RX commands

  1. Channel number

    Command: -c Description: Set Channel number. Definition (value range, 2.4G [1~14]/5G [36/40/44/48/52/56/60/64/100/…/161/165]

    • wifitest -c 1 : CH1
    • wifitest -c 36 : CH36
  2. Set channel bandwidth

    Command: -b Description: Set channel bandwidth for 802.11a/b/g/n/ac/ax mode. Definition:

    • wifitest -b 0 : BW 20
    • wifitest -b 1 : BW 40
    • wifitest -b 2 : BW 80
  3. Set TX/RX period

    Command: -S Description: Set TX/RX test period in seconds. Definition:

    • wifitest -S 0 : unlimited packets
    • wifitest -S 10 : transmit/receive packets for 10 seconds.

TX commands

  1. Set TX mode

    Command: -t Definition:

    • wifitest -t 0 : a/b/g mode
    • wifitest -t 1 : n mode
    • wifitest -t 2 : ac mode
    • wifitest -t 3 : ax mode
  2. Set Data Bandwidth

    Command: -Y Description: Set data bandwidth. Definition:

    • wifitest -Y 0 : BW 20
    • wifitest -Y 1 : BW 40
    • wifitest -Y 2 : BW 80

    Note: It is always as same as channel bandwidth.

  3. Set Legacy Rate

    Command: -R Description: Set legacy rate code for a/b/g mode Definition:

    • wifitest -R 1: 1M (CCK)
    • wifitest -R 2: 2M (CCK)
    • wifitest -R 3: 5.5M (CCK)
    • wifitest -R 4: 6M
    • wifitest -R 5: 9M
    • wifitest -R 6: 11M (CCK)
    • wifitest -R 7: 12M
    • wifitest -R 8: 18M
    • wifitest -R 9: 24M
    • wifitest -R 10: 36M
    • wifitest -R 11: 48M
    • wifitest -R 12: 54M
  4. Set HT/VHT Rate

    Command: -N Description: Set MCS rate for n/ac. Definition (Value range [0~15/32]):

    • wifitest -N 0 : MCS0
    • wifitest -N 7 : MCS7
    • wifitest -N 8 : MCS8
    • wifitest -N 9 : MCS9
  5. Set Frame Burst Interval

    Command: -i Description: Set SIFS interval. Definition:

    • wifitest -i 30
  6. Set TX Test Packet Number

    Command: -n Description: Set TX test packet number. Definition:

    • wifitest -n 0 : unlimited packets
    • wifitest -n 1000: transmit 1000 packets
  7. Set Preamble

    Command: -s Description: Set preamble. Definition:

    • wifitest -s 0 : short preamble
    • wifitest -s 1 : long preamble
  8. Set TX Path

    Command: -y Description: Set Tx Path Definition:

    • wifitest -y 1: TX0
    • wifitest -y 2: TX1
    • wifitest -y 3: TX0+TX1
  9. Set Stream Number

    Command: -# Description: MIMO control, set stream number. Definition:

    • wifitest -# 1: one stream.
    • wifitest -# 2: two streams.

    Note: In VHT MIMO use -# 2 -y 3, duplicate two path use -# 1 -y 3

  10. Set Packet Length

    Description: Set packet length Value: Wifitest -l Example: Wifitest -l 1024

    Note: 7668, 24 <= packet length <= 4095, -l is lower case of L If you do not set -l, default packet length is 1024

  11. Set Mixed Mode / Green Field Mode

    Command: -g Description: Set Mixed mode or Greenfield mode. Definition:

    • wifitest -g 0: mixed mode

Examples

To set Tx0, channel 6 2437MHz, 11b mode, rate 1, 20MHz bandwidth, Tx Power with default setting from bin file:

$ > wifitest -t 0 -c 6 -R 1 -b 0 -s 1 -g 0 -i 30 -S 20 -n 0 -y 1 -Y 0

To set Tx1, channel 36, 5180MHz, 11ac mode, rate MCS0, 20MHz bandwidth, Tx Power with default setting from bin file:

$ > wifitest -t 2 -c 36 -N 0 -b 0 -s 1 -g 0 -i 30 -S 20 -n 0 -y 2 -Y 0