spi.h File Reference

Communicates with sensors on the SPI bus. More...

#include "sensor_common.h"

Go to the source code of this file.

Classes
struct	MblMwSpiParameters
	Parameters required for an SPI operation. More...

Enumerations
enum	MblMwSpiFrequency {   MBL_MW_SPI_FREQUENCY_125KHz = 0 , MBL_MW_SPI_FREQUENCY_250KHz , MBL_MW_SPI_FREQUENCY_500KHz , MBL_MW_SPI_FREQUENCY_1MHz ,   MBL_MW_SPI_FREQUENCY_2MHz , MBL_MW_SPI_FREQUENCY_4MHz , MBL_MW_SPI_FREQUENCY_8MHz }
	Available SPI clock frequencies.
enum	MblMwSpiMode { MBL_MW_SPI_MODE_0 = 0 , MBL_MW_SPI_MODE_1 , MBL_MW_SPI_MODE_2 , MBL_MW_SPI_MODE_3 }
	Available SPI modes, see SPI Wiki page for further details. More...

Functions
METAWEAR_API MblMwDataSignal *	mbl_mw_spi_get_data_signal (MblMwMetaWearBoard *board, uint8_t length, uint8_t id)
	Retrieves the data signal representing spi data. More...
METAWEAR_API void	mbl_mw_spi_write (const MblMwMetaWearBoard *board, const MblMwSpiParameters *parameters)
	Writes data via the spi bus. More...

Detailed Description

Communicates with sensors on the SPI bus.

Copyright

MbientLab License (LICENSE.md)

Enumeration Type Documentation

MblMwSpiMode

enum MblMwSpiMode

Available SPI modes, see SPI Wiki page for further details.

Enumerator
MBL_MW_SPI_MODE_0	clock polarity 0, clock phase 0
MBL_MW_SPI_MODE_1	clock polarity 0, clock phase 1
MBL_MW_SPI_MODE_2	clock polarity 1, clock phase 0
MBL_MW_SPI_MODE_3	clock polarity 1, clock phase 1

Function Documentation

mbl_mw_spi_get_data_signal()

METAWEAR_API MblMwDataSignal* mbl_mw_spi_get_data_signal	(	MblMwMetaWearBoard *	board,
		uint8_t	length,
		uint8_t	id
	)

Retrieves the data signal representing spi data.

The data signal is identified by the id value and if the id is not present, a new data signal will be created using the length parameter.

Parameters

board	Board to communicate with
length	Number of bytes to read
id	Numerical id identifying the data

Returns

Pointer to the spi data signal

mbl_mw_spi_write()

METAWEAR_API void mbl_mw_spi_write	(	const MblMwMetaWearBoard *	board,
		const MblMwSpiParameters *	parameters
	)

Writes data via the spi bus.

Parameters

board	Board to communicate with
parameters	Parameters configuring the read