// setEffects creates, uploads and plays a new Force feedback effect.
// This function uploads only 1 effect, but it can deal with
// up to N effects at the same time. Where N is whatever value
// returned from `Device.ForceFeedbackCaps()`.
func setEffects(dev *evdev.Device) {
_, caps := dev.ForceFeedbackCaps()
var effect evdev.Effect
effect.Id = -1
effect.Trigger.Button = 0
effect.Trigger.Interval = 0
effect.Replay.Length = 20000 // 20 seconds
effect.Replay.Delay = 0
// Some samples of various effect types.
// (un)comment any one to try them out. Note that
// the device must support a given effect type.
switch {
case dev.Test(caps, evdev.FFRumble):
rumble(&effect)
case dev.Test(caps, evdev.FFPeriodic):
periodic(&effect)
case dev.Test(caps, evdev.FFConstant):
constant(&effect)
case dev.Test(caps, evdev.FFSpring):
spring(&effect)
case dev.Test(caps, evdev.FFDamper):
damper(&effect)
}
// Upload the effect.
dev.SetEffects(&effect)
fmt.Printf("Effect id: %d\n", effect.Id)
// Play the effect.
dev.PlayEffect(effect.Id)
// Delete the effect.
dev.UnsetEffects(&effect)
}
// check if device is a keyboard, mouse or touchpad.
func correctDevice(dev *evdev.Device) bool {
// check if device is a keyboard
if dev.Test(dev.EventTypes(), evdev.EvSync, evdev.EvKeys, evdev.EvMisc, evdev.EvLed, evdev.EvRepeat) {
return true
}
// check if device is a mouse
if dev.Test(dev.EventTypes(), evdev.EvSync, evdev.EvKeys, evdev.EvRelative, evdev.EvMisc) {
return true
}
// check if device is a touchpad
if dev.Test(dev.EventTypes(), evdev.EvSync, evdev.EvKeys, evdev.EvAbsolute) {
return true
}
return false
}