72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
//go:build example
|
|
// +build example
|
|
|
|
// Do not build by default.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"gobot.io/x/gobot/v2"
|
|
"gobot.io/x/gobot/v2/drivers/gpio"
|
|
"gobot.io/x/gobot/v2/platforms/tinkerboard"
|
|
)
|
|
|
|
// Wiring
|
|
// PWR Tinkerboard: 1 (+3.3V, VCC), 2(+5V), 6, 9, 14, 20 (GND)
|
|
// GPIO Tinkerboard: header pin 22 is input, pin 7 is normal output
|
|
// Button: the input pin is wired with a button to GND, an external pull up resistor is needed (e.g. 1K)
|
|
// LED: the output pin is wired to the cathode of a LED, the anode is wired with a resistor (70-130Ohm for 20mA) to VCC
|
|
// Expected behavior: LED is initially on, if button is pressed and released, the state changes
|
|
func main() {
|
|
const (
|
|
buttonPin = "22"
|
|
ledPin = "7"
|
|
)
|
|
|
|
a := tinkerboard.NewAdaptor()
|
|
button := gpio.NewButtonDriver(a, buttonPin, gpio.WithButtonPollInterval(100*time.Millisecond))
|
|
led := gpio.NewLedDriver(a, ledPin)
|
|
if err := led.On(); err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
|
|
work := func() {
|
|
if err := button.On(gpio.Error, func(err interface{}) {
|
|
fmt.Println("an error occurred:", err)
|
|
}); err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if err := button.On(gpio.ButtonPush, func(interface{}) {
|
|
fmt.Println("button pressed")
|
|
if err := led.On(); err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}); err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if err := button.On(gpio.ButtonRelease, func(interface{}) {
|
|
fmt.Println("button released")
|
|
if err := led.Off(); err != nil {
|
|
fmt.Println(err)
|
|
}
|
|
}); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
robot := gobot.NewRobot("buttonBot",
|
|
[]gobot.Connection{a},
|
|
[]gobot.Device{button, led},
|
|
work,
|
|
)
|
|
|
|
if err := robot.Start(); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|