2f1f8fb075
It is always implemented exactly the same way (as an uint8) so there is no reason to implement it in each target separately. This also makes it easier to add some documentation to it.
47 строки
1,5 КиБ
Go
47 строки
1,5 КиБ
Go
package machine
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import "errors"
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var (
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ErrInvalidInputPin = errors.New("machine: invalid input pin")
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ErrInvalidOutputPin = errors.New("machine: invalid output pin")
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ErrInvalidClockPin = errors.New("machine: invalid clock pin")
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ErrInvalidDataPin = errors.New("machine: invalid data pin")
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ErrNoPinChangeChannel = errors.New("machine: no channel available for pin interrupt")
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)
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// PinMode sets the direction and pull mode of the pin. For example, PinOutput
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// sets the pin as an output and PinInputPullup sets the pin as an input with a
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// pull-up.
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type PinMode uint8
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type PinConfig struct {
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Mode PinMode
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}
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// Pin is a single pin on a chip, which may be connected to other hardware
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// devices. It can either be used directly as GPIO pin or it can be used in
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// other peripherals like ADC, I2C, etc.
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type Pin uint8
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// NoPin explicitly indicates "not a pin". Use this pin if you want to leave one
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// of the pins in a peripheral unconfigured (if supported by the hardware).
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const NoPin = Pin(0xff)
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// High sets this GPIO pin to high, assuming it has been configured as an output
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// pin. It is hardware dependent (and often undefined) what happens if you set a
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// pin to high that is not configured as an output pin.
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func (p Pin) High() {
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p.Set(true)
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}
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// Low sets this GPIO pin to low, assuming it has been configured as an output
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// pin. It is hardware dependent (and often undefined) what happens if you set a
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// pin to low that is not configured as an output pin.
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func (p Pin) Low() {
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p.Set(false)
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}
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type ADC struct {
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Pin Pin
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}
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