Stepper driver DRV8825 about gobot HOT 1 OPEN

package main

import (
	"time"
	"gobot.io/x/gobot/v2"
	"gobot.io/x/gobot/v2/platforms/raspi"
)

func main() {
	r := raspi.NewAdaptor()

	work := func() {
		// Direction Pin (DRV8825 DIR)
		r.DigitalWrite("37", 1)

		step := true
		gobot.Every(1*time.Millisecond, func() {
			if step {
                               // Step pin (DRV8825 STP)
				r.DigitalWrite("35", 1)
				step = false
			} else {
				r.DigitalWrite("35", 0)
				step = true
			}
		})

		return
	}

	robot := gobot.NewRobot("stepperBot",
		[]gobot.Connection{r},
		[]gobot.Device{},
		work,
	)

	robot.Start()
}