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README.md

Tinker Board 2

The ASUS Tinker Board 2 is a single board SoC computer based on the Rockchip RK3399 processor (arm64). It has built-in GPIO, I2C, PWM, SPI, 1-Wire, MIPI CSI and MIPI DSI interfaces.

For more info about the Tinker Board, go to https://tinker-board.asus.com/series/tinker-board-2.html/.

How to Install

Please refer to the main README.md

Tested OS:

System access and configuration basics

Use sudo armbian-config or see description for Tinker Board.

Enabling hardware drivers

See description for Tinker Board.

Enabling GPIO pins

See description for Tinker Board.

Enabling I2C

See description for Tinker Board.

How to Use

The pin numbering used by your Gobot program should match the way your board is labeled right on the board itself.

r := tinkerboard2.NewAdaptor()
led := gpio.NewLedDriver(r, "7")

How to Connect

Compiling

Compile your Gobot program on your workstation like this:

GOARCH=arm64 GOOS=linux go build -o output/ examples/tinkerboard2_yl40.go

Once you have compiled your code, you can upload your program and execute it on the Tinker Board 2 from your workstation using the scp and ssh commands like this:

scp output/tinkerboard2_yl40 <user>@192.168.1.xxx:~
ssh -t <user>@192.168.1.xxx "./tinkerboard2_yl40"

Troubleshooting

I2C

The version "Armbian_community 25.2.0-trunk.124 bookworm" contains by default the overlay for i2c7 (header pins 27, 28) and i2c8 (connection on DSI_1, DSI_2). An overlay for i2c6 (header pins 3, 5) needs to be created manually based on one of the other overlays.

PWM

Investigate state

# ls -la /sys/class/pwm/
ls -la /sys/class/pwm/
total 0
drwxr-xr-x  2 root root 0 Jan 18  2013 .
drwxr-xr-x 77 root root 0 Jan 18  2013 ..
lrwxrwxrwx  1 root root 0 Jan 18  2013 pwmchip0 -> ../../devices/platform/ff420020.pwm/pwm/pwmchip0

looking for one of the following items in the path: ff420000 => pwm0, pin32 ff420010 => pwm1, pin33 ff420020 => pwm2, already activated, but internally, not usable ff420030 => pwm3, pin26

Activate

The version "Armbian_community 25.2.0-trunk.124 bookworm" contains no overlay for pwm0, pwm1 or pwm3. This needs to be created based on another overlay, e.g. rockchip-rk3568-hk-pwm1.dtbo. After activation of your preferred pwmchip, proceed like described for Tinker Board.