Interface ISpiBus
Represents an SPI bus.
Assembly: Meadow.Contracts.dll
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public interface ISpiBus
Properties
SupportedSpeeds
Gets an array of all supported speeds of the SPI bus.
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Frequency[] SupportedSpeeds { get; }
Configuration
Gets the current SPI clock configuration.
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SpiClockConfiguration Configuration { get; }
Methods
Read(IDigitalOutputPort?, Span<byte>, ChipSelectMode)
Reads data from the SPI bus into the specified buffer.
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void Read(IDigitalOutputPort? chipSelect, Span<byte> readBuffer, ChipSelectMode csMode = ChipSelectMode.ActiveLow)
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Hardware.IDigitalOutputPort | chipSelect | The chip select port to activate the bus. |
System.Span<System.Byte> | readBuffer | The buffer to read data into. |
| Meadow.Hardware.ChipSelectMode | csMode | The chip select mode that activates the peripheral. |
Write(IDigitalOutputPort?, Span<byte>, ChipSelectMode)
Writes data to the SPI bus.
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void Write(IDigitalOutputPort? chipSelect, Span<byte> writeBuffer, ChipSelectMode csMode = ChipSelectMode.ActiveLow)
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Hardware.IDigitalOutputPort | chipSelect | The chip select port to activate the peripheral. |
System.Span<System.Byte> | writeBuffer | The buffer containing data to write. |
| Meadow.Hardware.ChipSelectMode | csMode | The chip select mode that activates the peripheral. |
Exchange(IDigitalOutputPort?, Span<byte>, Span<byte>, ChipSelectMode)
Writes data from the write buffer to a peripheral on the bus while reading return data into the read buffer.
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void Exchange(IDigitalOutputPort? chipSelect, Span<byte> writeBuffer, Span<byte> readBuffer, ChipSelectMode csMode = ChipSelectMode.ActiveLow)
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Hardware.IDigitalOutputPort | chipSelect | The chip select port to activate the peripheral. |
System.Span<System.Byte> | writeBuffer | The buffer containing data to write. |
System.Span<System.Byte> | readBuffer | The buffer to read returning data into. |
| Meadow.Hardware.ChipSelectMode | csMode | The chip select mode that activates the peripheral. |