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README
¶
Tinker Board
The ASUS Tinker Board is a single board SoC computer based on the Rockchip RK3288 processor. It has built-in GPIO, PWM, SPI, and I2C interfaces.
For more info about the Tinker Board, go to https://www.asus.com/uk/Single-Board-Computer/Tinker-Board/.
How to Install
We recommend updating to the latest Debian TinkerOS when using the Tinker Board.
You would normally install Go and Gobot on your workstation. Once installed, cross compile your program on your workstation, transfer the final executable to your Tinker Board, and run the program on the Tinker Board as documented here.
go get -d -u gobot.io/x/gobot/...
Enabling GPIO pins
To enable use of the Tinker Board GPIO pins, you need to perform the following steps as a one-time configuration. Once your Tinker Board has been configured, you do not need to do so again.
Note that these configuration steps must be performed on the Tinker Board itself. The easiest is to login to the Tinker Board via SSH:
ssh linaro@192.168.1.xxx
Create a group "gpio"
Create a Linux group named "gpio" by running the following command:
sudo groupadd -f --system gpio
If you already have a "gpio" group, you can skip to the next step.
Add the "linaro" user to the new "gpio" group
Add the user "linaro" to be a member of the Linux group named "gpio" by running the following command:
sudo usermod -a -G gpio linaro
If you already have added the "gpio" group, you can skip to the next step.
Add a "udev" rules file
Create a new "udev" rules file for the GPIO on the Tinker Board by running the following command:
sudo vi /etc/udev/rules.d/91-gpio.rules
And add the following contents to the file:
SUBSYSTEM=="gpio", KERNEL=="gpiochip*", ACTION=="add", PROGRAM="/bin/sh -c 'chown root:gpio /sys/class/gpio/export /sys/class/gpio/unexport ; chmod 220 /sys/class/gpio/export /sys/class/gpio/unexport'"
SUBSYSTEM=="gpio", KERNEL=="gpio*", ACTION=="add", PROGRAM="/bin/sh -c 'chown root:gpio /sys%p/active_low /sys%p/direction /sys%p/edge /sys%p/value ; chmod 660 /sys%p/active_low /sys%p/direction /sys%p/edge /sys%p/value'"
Press the "Esc" key, then press the ":" key and then the "q" key, and then press the "Enter" key. This should save your file. After rebooting your Tinker Board, you should be able to run your Gobot code that uses GPIO.
Enabling I2C
To enable use of the Tinker Board I2C, you need to perform the following steps as a one-time configuration. Once your Tinker Board has been configured, you do not need to do so again.
Note that these configuration steps must be performed on the Tinker Board itself. The easiest is to login to the Tinker Board via SSH:
ssh linaro@192.168.1.xxx
Create a group "i2c"
Create a Linux group named "i2c" by running the following command:
sudo groupadd -f --system i2c
If you already have a "i2c" group, you can skip to the next step.
Add the "linaro" user to the new "i2c" group
Add the user "linaro" to be a member of the Linux group named "i2c" by running the following command:
sudo usermod -a -G gpio linaro
If you already have added the "i2c" group, you can skip to the next step.
Add a "udev" rules file
Create a new "udev" rules file for the I2C on the Tinker Board by running the following command:
sudo vi /etc/udev/rules.d/92-i2c.rules
And add the following contents to the file:
KERNEL=="i2c-0" , GROUP="i2c", MODE="0660"
KERNEL=="i2c-[1-9]*", GROUP="i2c", MODE="0666"
Press the "Esc" key, then press the ":" key and then the "q" key, and then press the "Enter" key. This should save your file. After rebooting your Tinker Board, you should be able to run your Gobot code that uses I2C.
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 := tinkerboard.NewAdaptor()
led := gpio.NewLedDriver(r, "7")
How to Connect
Compiling
Compile your Gobot program on your workstation like this:
$ GOARM=7 GOARCH=arm GOOS=linux go build examples/tinkerboard_blink.go
Once you have compiled your code, you can you can upload your program and execute it on the Tinkerboard from your workstation using the scp and ssh commands like this:
$ scp tinkerboard_blink linaro@192.168.1.xxx:/home/linaro/
$ ssh -t linaro@192.168.1.xxx "./tinkerboard_blink"
Documentation
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Overview ¶
Package tinkerboard contains the Gobot adaptor for the ASUS Tinker Board.
For further information refer to tinkerboard README: https://github.com/hybridgroup/gobot/blob/master/platforms/tinkerboard/README.md
Index ¶
- type Adaptor
- func (c *Adaptor) Connect() (err error)
- func (c *Adaptor) DigitalPin(pin string, dir string) (sysfsPin sysfs.DigitalPinner, err error)
- func (c *Adaptor) DigitalRead(pin string) (val int, err error)
- func (c *Adaptor) DigitalWrite(pin string, val byte) (err error)
- func (c *Adaptor) Finalize() (err error)
- func (c *Adaptor) GetConnection(address int, bus int) (connection i2c.Connection, err error)
- func (c *Adaptor) GetDefaultBus() int
- func (c *Adaptor) Name() string
- func (c *Adaptor) PWMPin(pin string) (sysfsPin sysfs.PWMPinner, err error)
- func (c *Adaptor) PwmWrite(pin string, val byte) (err error)
- func (c *Adaptor) ServoWrite(pin string, angle byte) (err error)
- func (c *Adaptor) SetName(n string)
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Adaptor ¶
type Adaptor struct {
// contains filtered or unexported fields
}
Adaptor represents a Gobot Adaptor for the ASUS Tinker Board
func (*Adaptor) DigitalPin ¶
DigitalPin returns matched digitalPin for specified values
func (*Adaptor) DigitalRead ¶
DigitalRead reads digital value from the specified pin.
func (*Adaptor) DigitalWrite ¶
DigitalWrite writes digital value to the specified pin.
func (*Adaptor) GetConnection ¶
GetConnection returns a connection to a device on a specified bus. Valid bus number is [0..1] which corresponds to /dev/i2c-0 through /dev/i2c-1.
func (*Adaptor) GetDefaultBus ¶
GetDefaultBus returns the default i2c bus for this platform
func (*Adaptor) ServoWrite ¶
ServoWrite writes a servo signal to the specified pin
Source Files