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package machine
import "errors"
var (
ErrInvalidInputPin = errors.New("machine: invalid input pin")
ErrInvalidOutputPin = errors.New("machine: invalid output pin")
ErrInvalidClockPin = errors.New("machine: invalid clock pin")
ErrInvalidDataPin = errors.New("machine: invalid data pin")
)
type PinConfig struct {
Mode PinMode
}
// Pin is a single pin on a chip, which may be connected to other hardware
// devices. It can either be used directly as GPIO pin or it can be used in
// other peripherals like ADC, I2C, etc.
type Pin int8
// NoPin explicitly indicates "not a pin". Use this pin if you want to leave one
// of the pins in a peripheral unconfigured (if supported by the hardware).
const NoPin = Pin(-1)
// High sets this GPIO pin to high, assuming it has been configured as an output
// pin. It is hardware dependent (and often undefined) what happens if you set a
// pin to high that is not configured as an output pin.
func (p Pin) High() {
p.Set(true)
}
// Low sets this GPIO pin to low, assuming it has been configured as an output
// pin. It is hardware dependent (and often undefined) what happens if you set a
// pin to low that is not configured as an output pin.
func (p Pin) Low() {
p.Set(false)
}
type PWM struct {
Pin Pin
}
type ADC struct {
Pin Pin
}