6. Android Application

6.1 Display

Display_IO

Display IO

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

Compact3566_Android HDMI Display

HDMI Display

For 4K video files in H.265/H.264/VP9 format, both HDMI and LVDS can play streaming, but only HDMI can output 4K 60fps.

Audio output priority: headphone is higher than HDMI.

Note

HDMI and LVDS do not support simultaneous display. The Boardcon factory default HDMI display. If change to LVDS LCD, please reflash the corresponding boot.img

Compact3566_Android LVDS Display

LVDS display

6.2 Audio IO

Audio IO

Recording priority: headset recording is higher than MIC.

Switch headset recording to MIC
1tinymix -D 1 14 0
2tinymix -D 1 15 0
Switch MIC recording to headset
1tinymix -D 1 14 1
2tinymix -D 1 15 1
_images/android_record.png

Recording

6.3 Micro SD

Micro SD

Micro SD

Compact3566 supports SD Hot-plug.

_images/android_sd.png

Mounted SD

6.4 USB Host

USB

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

_images/Android_USB2.png

USB Device

The USB3.0 default supports Superspeed.

_images/Android_USB3.png

Superspeed

6.5 M.2 SSD

SSD

M.2 SSD

Compact3566 only supports ext4 format. Format SSD to ext4 file system on ubuntu system

❶ view the SSD device name.

1ls /dev/block
SSD device name

❷ format SSD on Ubuntu system.

1mke2fs -t ext4 /dev/block/nvme0n1

❸ mount SSD.

1mkdir /data/ssd
2mount -t ext4 /dev/block/nvme0n1 /data/ssd
3ls /data/ssd
_images/image70.png

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

1ls /run/media/nvme0n1

6.6 WiFi & Bluehost

WiFi+BT

WiFi & Bluehost

6.6.1 WiFi

❶ connect the WiFi antenna.

❷ click Settings -> Network & internet -> Wi-Fi -> turn on

❸ 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.

_images/wifi_test_3.png

6.6.2 Bluetooth

Click Settings -> Connected devices -> Pair new device

Select the available device in the list to pair.

_images/bt_test_1.png
_images/bt_test_2.png

6.7 Ethernet

Ethernet

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.

1ifconfig
2ping www.boardcon.com
_images/Ethernet_1.png
_images/Ethernet_2.png

Ping IP

6.8 RTC

RTC

RTC

Insert a CR1220 battery before test. It keeps the time running when the main power is off.

1hwclock
Serial terminal output
 console:/ # hwclock
 2022-12-20 03:41:17+0000
 console:/ # hwclock
 2022-12-20 03:44:24+0000
 console:/ # hwclock
 2022-12-20 03:44:35+0000
 console:/ # hwclock
 2022-12-20 03:46:32+0000

6.9 ADB

ADB

ADB

The default state of USB-AF is USB HOST after the development board runs normally. Execute the following commands in the terminal to switch ADB/Host.

1echo peripheral > /sys/devices/platform/fe8a0000.usb2-phy/otg_mode  //switch to ADB
2echo host > /sys/devices/platform/fe8a0000.usb2-phy/otg_mode        //switch to HOST

6.10 Expansion

GPIO

Expansion

6.10.1 UART

The UART loopback test is for reference only.

❶ push the file com to the Compact3566 via ADB.

1adb root
2adb remount
3adb push \xx\com /system  //\xx\ is the absolute path of 'com'
4chmod 777 /system/com    //modify com properties

❷ connect the transmit (TX) to the receive (RX) of UART.

UART

UART

  • UART3(ttyS3): Pin5(TX), Pin3(RX)

  • UART4(ttyS4): Pin29(TX), Pin31(RX)

  • UART5(ttyS5): Pin8(TX), Pin10(RX)

  • UART9(ttyS9): Pin40(TX), Pin38(RX)

❸ execute command, then input character to test UART.

1./system/com /dev/ttyS3 115200 8 0 1  //test UART3
Serial terminal output
130|console:/ # ./system/com /dev/ttyS3 115200 8 0 1
port = /dev/ttyS3
baudrate = 115200
cs = 8
parity = 0
stopb = 1
123456789
RECV: 123456789
ab9876543210
RECV: ab9876543210

❹ press Ctrl + C to exit UART3 testing, execute the command to test UART4.

1./system/com /dev/ttyS4 115200 8 0 1   //test UART4
Serial terminal output
130|console:/ # ./system/com /dev/ttyS4 115200 8 0 1
port = /dev/ttyS3
baudrate = 115200
cs = 8
parity = 0
stopb = 1
78787878
RECV: 78787878
rtrtrtrt
RECV: rtrtrtrt

The test methods for UART5(ttyS5) and UART9(ttyS9) are also similar.

6.10.2 SPI

❶ Push the file spidev_test to the Compact3566 with ADB.

1adb root
2adb remount
3adb push \xx\spidev_test /system  //\xx\ is the absolute path to store spidev_test
4adb shell
5chmod 777 /system/spidev_test   //modify spidev_test properties

❷ connect SPI0_MOSI_M0 and SPI0_MISO_M0 of SPI0.

SPI

  • pin19: SPI0_MOSI_M0

  • pin21: SPI0_MISO_M0

❸ Execute the command to test SPI0.

1./system/spidev_test
Serial terminal output
 console:/ # ./system/spidev_test
 spi mode: 0
 bits per word: 8
 max speed: 500000 Hz (500 KHz)

 FF FF FF FF FF FF
 40 00 00 00 00 95
 FF FF FF FF FF FF
 FF FF FF FF FF FF
 FF FF FF FF FF FF
 DE AD BE EF BA AD
 F0 0D
 console:/ #

6.10.3 IR

SBC+IR

IR connection

❶ connect IR receiver and board.

  • OUT: connect to PWM3_IR (pin18)

  • GND: connect to Ground

  • VCC: connect to 3.3V

❷ execute the command.

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

❸ operate the IR controller and view the received data.

Serial terminal output
 console:/ # echo 1 > /sys/module/rockchip_pwm_remotectl/parameters/code_print
 [ 102.405500] USERCODE=0xbf40
 [ 102.433396] RMC_GETDATA=b8
 [ 102.700999] USERCODE=0xbf40
 [ 102.729040] RMC_GETDATA=b9
 [ 102.814926] USERCODE=0xbf40
 [ 102.842869] RMC_GETDATA=e2

6.11 Camera

Camera

Camera

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