6. Android Application

6.1 Display

Connect the board and monitor with a HDMI cable, then start up.

Note

The Boardcon factory default HDMI display. If change to LVDS/MIPI LCD, please reflash the corresponding boot.img.

10.1” LVDS LCD: boot_10.1inch_lvds.img

10.1” MIPI LCD: boot_10.1inch_mipi.img

7” LVDS LCD: boot_7inch_lvds.img

HDMI: boot_hdmi.img

Change the size of app icons in Android12:

wm density 240   //10.1-inch LVDS
wm density 180   //7-inch LVDS

6.2 SD Card

EM3566 supports SD Hot-plug.

6.3 USB Host

The USB2.0/3.0 Host can be used to connect USB mouse, USB keyboard, U-Disk or other USB devices.

6.4 Video&Audio Player

Copy video file to SD_card/U-disk then insert it to the board. After system boot open SD_card/U-disk and click video file to play.

6.5 Ethernet

Connect the board and router with an Ethernet cable (default DHCP=Yes). User can ping URL/IP at terminal, or open the browser to test Network.

ifconfig
ping www.boardcon.com

6.6 Record

Step 1, plug the Microphone into the appropriate port.

Step 2, open the APP Sound Recorder in Android.

Step 3, click Start button to start recording.

After finish recording, click Stop and Save to store file.

The default storage path is Internal Memory/Recordings

Play priority: Headphone output greater than HDMI out.

6.7 RTC

Execute the command hwclock at CRT terminal

date “2024-01-25 12:00:00”
hwclock -w
hwclock

6.8 WiFi

Connect the WiFi antenna, then click Settings -> Network&internet -> Wi-Fi -> turn on, select the SSID from the list of available networks and enter the password.

After connected, user can ping URL/IP at terminal, or open the browser to test Network.

6.9 Bluetooth

Click Settings -> Connected devices -> Pair new device

Select the available device in the list to pair.

6.10 Camera

Connect the camera module (OV13850) to the development board camera0 before power on, then click the camera APP to test.

Click the button to switch the camera.

6.11 RS485

This test method is for reference only.

Step 1, Connect the RS485 ports of Board A and B with the test line.

Step 2, push the file com into board A and board B via ADB.

adb root
adb remount
adb push \xx\com /system  //\xx\ is the absolute path to store com
adb shell
chmod 777 /system/com    //Modify com properties

Step 3, execute the command on the terminal serial ports of board A and board B respectively.

./system/com /dev/ttyS3 115200 8 0 1

Step 4, input character to test RS485 communication.

6.12 RS232

The RS232 loopback test is for reference only.

Step 1, push the file com to the test board via ADB

adb root
adb remount
adb push \xx\com /system  //\xx\ is the absolute path to store com
adb shell
chmod 777 /system/com    //Modify com properties

Step 2, connect the transmit (TX) pin to the receive (RX) pin of RS232

Step 3, after executes the command, input character to test RS232.

./system/com /dev/ttyS4 115200 8 0 1  //Test UART4

Press Ctrl+C to exit UART4 testing, execute the command to test UART5.

./system/com /dev/ttyS5 115200 8 0 1   //Test UART5

6.13 M.2 NVMe SSD

EM3566 only supports ext4 format. Format SSD to ext4 file system on ubuntu system

Step 1, view the SSD device name

ls /dev/block

Step 2, format SSD on ubuntu system.

mke2fs -t ext4 /dev/block/nvme0n1

Step 3, mount SSD

mkdir /data/ssd
mount -t ext4 /dev/block/nvme0n1 /data/ssd
ls /data/ssd

If the SSD is auto-mounted, execute the command to test:

ls /run/media/nvme0n1

6.14 IR

Connect IR receiver to the IR port. Operate the IR controller and view the received data after execute the command.

echo 1 > /sys/module/rockchip_pwm_remotectl/parameters/code_print

6.15 ADC

Test SARADC_VIN2

cat /sys/devices/platform/fe720000.saradc/iio:device0/in_voltage2_raw

Connect SARADC_VIN2 to VDDIO_18 execute command again

cat /sys/devices/platform/fe720000.saradc/iio:device0/in_voltage2_raw

Connect SARADC_VIN2 to GND, then execute command

cat /sys/devices/platform/fe720000.saradc/iio:device0/in_voltage2_raw

Test SARADC_VIN3

cat /sys/devices/platform/fe720000.saradc/iio:device0/in_voltage3_raw

6.16 4G

Step 1, Insert 4G module to PCIe slot (4G model: EC20).

Step 2, Connect antenna and insert SIM card.

Step 3, The default network connection is 4G LTE after power on.