// arduinoSetup does needed setup for the Arduino compatible breakout board
func (e *Adaptor) arduinoSetup() (err error) {
e.tristate = sysfs.NewDigitalPin(214)
if err = e.tristate.Export(); err != nil {
return err
}
if err = e.tristate.Direction(sysfs.OUT); err != nil {
return err
}
if err = e.tristate.Write(sysfs.LOW); err != nil {
return err
}
for _, i := range []int{263, 262} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return err
}
if err = io.Direction(sysfs.OUT); err != nil {
return err
}
if err = io.Write(sysfs.HIGH); err != nil {
return err
}
if err = io.Unexport(); err != nil {
return err
}
}
for _, i := range []int{240, 241, 242, 243} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return err
}
if err = io.Direction(sysfs.OUT); err != nil {
return err
}
if err = io.Write(sysfs.LOW); err != nil {
return err
}
if err = io.Unexport(); err != nil {
return err
}
}
for _, i := range []string{"111", "115", "114", "109"} {
if err = changePinMode(i, "1"); err != nil {
return err
}
}
for _, i := range []string{"131", "129", "40"} {
if err = changePinMode(i, "0"); err != nil {
return err
}
}
err = e.tristate.Write(sysfs.HIGH)
return
}
func (e *Adaptor) arduinoI2CSetup() (err error) {
if err = e.tristate.Write(sysfs.LOW); err != nil {
return
}
for _, i := range []int{14, 165, 212, 213} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.IN); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
for _, i := range []int{236, 237, 204, 205} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.OUT); err != nil {
return
}
if err = io.Write(sysfs.LOW); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
for _, i := range []string{"28", "27"} {
if err = changePinMode(i, "1"); err != nil {
return
}
}
if err = e.tristate.Write(sysfs.HIGH); err != nil {
return
}
return
}
// digitalPin retrieves digital pin value by name
func (b *Adaptor) digitalPin(pin string, dir string) (sysfsPin sysfs.DigitalPin, err error) {
i, err := b.translatePin(pin)
if err != nil {
return
}
if b.digitalPins[i] == nil {
b.digitalPins[i] = sysfs.NewDigitalPin(i)
err := b.digitalPins[i].Export()
if err != nil {
return nil, err
}
}
if err = b.digitalPins[i].Direction(dir); err != nil {
return
}
return b.digitalPins[i], nil
}
// digitalPin returns matched digitalPin for specified values
func (r *Adaptor) digitalPin(pin string, dir string) (sysfsPin sysfs.DigitalPin, err error) {
i, err := r.translatePin(pin)
if err != nil {
return
}
if r.digitalPins[i] == nil {
r.digitalPins[i] = sysfs.NewDigitalPin(i)
if err = r.digitalPins[i].Export(); err != nil {
return
}
}
if err = r.digitalPins[i].Direction(dir); err != nil {
return
}
return r.digitalPins[i], nil
}
// digitalPin returns matched digitalPin for specified values
func (e *Adaptor) digitalPin(pin string, dir string) (sysfsPin sysfs.DigitalPin, err error) {
i := sysfsPinMap[pin]
if e.digitalPins[i.pin] == nil {
e.digitalPins[i.pin] = sysfs.NewDigitalPin(i.pin)
if err = e.digitalPins[i.pin].Export(); err != nil {
// TODO: log error
return
}
}
if dir == "in" {
if err = e.digitalPins[i.pin].Direction(sysfs.IN); err != nil {
return
}
} else if dir == "out" {
if err = e.digitalPins[i.pin].Direction(sysfs.OUT); err != nil {
return
}
}
return e.digitalPins[i.pin], nil
}
// digitalPin returns matched digitalPin for specified values
func (e *Adaptor) digitalPin(pin string, dir string) (sysfsPin sysfs.DigitalPin, err error) {
i := e.pinmap[pin]
if e.digitalPins[i.pin] == nil {
e.digitalPins[i.pin] = sysfs.NewDigitalPin(i.pin)
if err = e.digitalPins[i.pin].Export(); err != nil {
return
}
if i.resistor > 0 {
e.digitalPins[i.resistor] = sysfs.NewDigitalPin(i.resistor)
if err = e.digitalPins[i.resistor].Export(); err != nil {
return
}
}
if i.levelShifter > 0 {
e.digitalPins[i.levelShifter] = sysfs.NewDigitalPin(i.levelShifter)
if err = e.digitalPins[i.levelShifter].Export(); err != nil {
return
}
}
if len(i.mux) > 0 {
for _, mux := range i.mux {
e.digitalPins[mux.pin] = sysfs.NewDigitalPin(mux.pin)
if err = e.digitalPins[mux.pin].Export(); err != nil {
return
}
if err = e.digitalPins[mux.pin].Direction(sysfs.OUT); err != nil {
return
}
if err = e.digitalPins[mux.pin].Write(mux.value); err != nil {
return
}
}
}
}
if dir == "in" {
if err = e.digitalPins[i.pin].Direction(sysfs.IN); err != nil {
return
}
if i.resistor > 0 {
if err = e.digitalPins[i.resistor].Direction(sysfs.OUT); err != nil {
return
}
if err = e.digitalPins[i.resistor].Write(sysfs.LOW); err != nil {
return
}
}
if i.levelShifter > 0 {
if err = e.digitalPins[i.levelShifter].Direction(sysfs.OUT); err != nil {
return
}
if err = e.digitalPins[i.levelShifter].Write(sysfs.LOW); err != nil {
return
}
}
} else if dir == "out" {
if err = e.digitalPins[i.pin].Direction(sysfs.OUT); err != nil {
return
}
if i.resistor > 0 {
if err = e.digitalPins[i.resistor].Direction(sysfs.IN); err != nil {
return
}
}
if i.levelShifter > 0 {
if err = e.digitalPins[i.levelShifter].Direction(sysfs.OUT); err != nil {
return
}
if err = e.digitalPins[i.levelShifter].Write(sysfs.HIGH); err != nil {
return
}
}
}
return e.digitalPins[i.pin], nil
}