73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
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package i2c
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type i2cConfig struct {
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bus int
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address int
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}
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// Config is the interface which describes how a Driver can specify
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// optional I2C params such as which I2C bus it wants to use.
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type Config interface {
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// WithBus sets which bus to use
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WithBus(bus int)
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// GetBusOrDefault gets which bus to use
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GetBusOrDefault(def int) int
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// WithAddress sets which address to use
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WithAddress(address int)
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// GetAddressOrDefault gets which address to use
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GetAddressOrDefault(def int) int
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}
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// NewConfig returns a new I2c Config.
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func NewConfig() Config {
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return &i2cConfig{bus: BusNotInitialized, address: AddressNotInitialized}
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}
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// WithBus sets preferred bus to use.
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func (i *i2cConfig) WithBus(bus int) {
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i.bus = bus
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}
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// GetBusOrDefault returns which bus to use, either the one set using WithBus(),
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// or the default value which is passed in as the one param.
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func (i *i2cConfig) GetBusOrDefault(d int) int {
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if i.bus == BusNotInitialized {
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return d
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}
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return i.bus
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}
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// WithBus sets which bus to use as a optional param.
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func WithBus(bus int) func(Config) {
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return func(i Config) {
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i.WithBus(bus)
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}
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}
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// WithAddress sets which address to use.
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func (i *i2cConfig) WithAddress(address int) {
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i.address = address
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}
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// GetAddressOrDefault returns which address to use, either
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// the one set using WithBus(), or the default value which
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// is passed in as the param.
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func (i *i2cConfig) GetAddressOrDefault(a int) int {
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if i.address == AddressNotInitialized {
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return a
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}
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return i.address
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}
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// WithAddress sets which address to use as a optional param.
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func WithAddress(address int) func(Config) {
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return func(i Config) {
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i.WithAddress(address)
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}
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}
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