SPI class Null safety
SPI wrapper functions for Linux userspace spidev devices.
c-periphery SPI documentation.
Constructors
- SPI(int bus, int chip, SPImode mode, int maxSpeed)
-
Opens the SPI device at the path ("/dev/spidev
bus.chip"), with the specified SPImode, specifiedmaxSpeedin hertz, and the defaults of MSB_FIRST bit order, and 8 bits per word. [...] - SPI.openAdvanced(int bus, int chip, SPImode mode, int maxSpeed, BitOrder bitOrder, int bitsPerWord, int extraFlags)
-
Opens the SPI device at the specified path ("/dev/spidev
bus.chip"), with the specified SPI mode,maxSpeedin hertz,bitOrder,bitsPerWord, andextraFlags. [...] - SPI.openAdvanced2(int bus, int chip, String path, SPImode mode, int maxSpeed, BitOrder bitOrder, int bitsPerWord, int extraFlags)
-
Opens the SPI device at the specified
path, with the specified SPI mode,maxSpeedin hertz,bitOrder,bitsPerWord, andextraFlags. This open function is the same as SPI.openAdvanced, except that extra_flags can be 32-bits. [...]
Properties
- bitOrder → BitOrder
-
SPI bit order
final
- bitsPerWord → int
-
SPI transfer word size
final
- bus → int
-
SPI bus number: /dev/spidevbus.chip
final
- chip → int
-
SPI chip number: /dev/spidevbus.chip
final
- extraFlags → int
-
SPI extra flags
final
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- maxSpeed → int
-
SPI bus speed
final
- mode → SPImode
-
SPI mode
final
- path → String
-
SPI device path: /dev/spidevbus.chip
final
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
dispose(
) → void - Releases all interal native resoures.
-
getErrno(
) → int - Returns the libc errno of the last failure that occurred.
-
getSPIbitOrder(
) → BitOrder - Returns the BitOrder.
-
getSPIbitsPerWord(
) → int - Returns bits per word.
-
getSPIextraFlags(
) → int - Returns the 8-bit extra flags mask.
-
getSPIextraFlags32(
) → int - Returns the 32-bit extra flags mask.
-
getSPIfd(
) → int - Returns the file descriptor (for the underlying spidev device) of the SPI handle.
-
getSPIinfo(
) → String - Returns a string representation of the spi handle.
-
getSPImaxSpeed(
) → int - Returns the max speed of the SPI bus.
-
getSPImode(
) → SPImode - Returns the SPImode.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
setSPIbitOrder(
BitOrder bitOrder) → void -
Sets the
bitOrder. -
setSPIbitsPerWord(
int value) → void - Sets the bits per word.
-
setSPIextraFlags(
int value) → void - Sets the 8-bit extra flags mask.
-
setSPIextraFlags32(
int value) → void - Sets the 32-bit extra flags mask.
-
setSPImaxSpeed(
int maxSpeed) → void -
Sets the
maxSpeedof the SPI bus. -
setSPImode(
SPImode mode) → void - Sets the SPImode.
-
toString(
) → String -
A string representation of this object. [...]
inherited
-
transfer(
List< int> data, bool reuseBuffer) → List<int> -
Shifts out
data, while shifting in the data to the result buffer. IfreuseBufferis true,datawill be used for the result buffer, for false a new buffer will be created. [...] -
transferInt8(
Pointer< Uint8> data, bool reuseBuffer, int len) → Pointer<Uint8> -
Shifts out
lenword counts of thedatabudder, while shifting in the result buffer. IfreuseBufferis true,datawill be used the result buffer, for false a new buffer will be created. [...]
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited
Static Methods
-
getSPIerrorCode(
int value) → SPIerrorCode -
Converts the native error code
valueto GPIOerrorCode.