ad_sigma_delta.h File Reference

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Data Structures
struct	ad_sd_calib_data
struct	ad_sigma_delta_info
struct	ad_sigma_delta

Macros
#define	__AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, _storagebits, _shift, _extend_name, _type)
#define	AD_SD_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, _storagebits, _shift)
#define	AD_SD_SHORTED_CHANNEL(_si, _channel, _address, _bits, _storagebits, _shift)
#define	AD_SD_CHANNEL(_si, _channel, _address, _bits, _storagebits, _shift)
#define	AD_SD_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift)
#define	AD_SD_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, _shift)

Enumerations
enum	ad_sigma_delta_mode { AD_SD_MODE_CONTINUOUS = 0, AD_SD_MODE_SINGLE = 1, AD_SD_MODE_IDLE = 2, AD_SD_MODE_POWERDOWN = 3 }

Functions
void	ad_sd_set_comm (struct ad_sigma_delta *sigma_delta, uint8_t comm)
int	ad_sd_write_reg (struct ad_sigma_delta *sigma_delta, unsigned int reg, unsigned int size, unsigned int val)
int	ad_sd_read_reg (struct ad_sigma_delta *sigma_delta, unsigned int reg, unsigned int size, unsigned int *val)
int	ad_sigma_delta_single_conversion (struct iio_dev *indio_dev, const struct iio_chan_spec *chan, int *val)
int	ad_sd_calibrate_all (struct ad_sigma_delta *sigma_delta, const struct ad_sd_calib_data *cd, unsigned int n)
int	ad_sd_init (struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev, struct spi_device *spi, const struct ad_sigma_delta_info *info)
int	ad_sd_setup_buffer_and_trigger (struct iio_dev *indio_dev)
void	ad_sd_cleanup_buffer_and_trigger (struct iio_dev *indio_dev)
int	ad_sd_validate_trigger (struct iio_dev *indio_dev, struct iio_trigger *trig)

Variables
enum ad_sigma_delta_mode	__attribute__

Macro Definition Documentation

#define __AD_SD_CHANNEL	(		_si,
			_channel1,
			_channel2,
			_address,
			_bits,
			_storagebits,
			_shift,
			_extend_name,
			_type
	)

Value:

{ \
        .type = (_type), \
        .differential = (_channel2 == -1 ? 0 : 1), \
        .indexed = 1, \
        .channel = (_channel1), \
        .channel2 = (_channel2), \
        .address = (_address), \
        .extend_name = (_extend_name), \
        .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
            IIO_CHAN_INFO_SCALE_SHARED_BIT | \
            IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \
        .scan_index = (_si), \
        .scan_type = { \
            .sign = 'u', \
            .realbits = (_bits), \
            .storagebits = (_storagebits), \
            .shift = (_shift), \
            .endianness = IIO_BE, \
        }, \
    }

Definition at line 126 of file ad_sigma_delta.h.

#define AD_SD_CHANNEL	(		_si,
			_channel,
			_address,
			_bits,
			_storagebits,
			_shift
	)

Value:

__AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
        _storagebits, _shift, NULL, IIO_VOLTAGE)

Definition at line 159 of file ad_sigma_delta.h.

#define AD_SD_DIFF_CHANNEL	(		_si,
			_channel1,
			_channel2,
			_address,
			_bits,
			_storagebits,
			_shift
	)

Value:

__AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
        _storagebits, _shift, NULL, IIO_VOLTAGE)

Definition at line 149 of file ad_sigma_delta.h.

#define AD_SD_SHORTED_CHANNEL	(		_si,
			_channel,
			_address,
			_bits,
			_storagebits,
			_shift
	)

Value:

__AD_SD_CHANNEL(_si, _channel, _channel, _address, _bits, \
        _storagebits, _shift, "shorted", IIO_VOLTAGE)

Definition at line 154 of file ad_sigma_delta.h.

#define AD_SD_SUPPLY_CHANNEL	(		_si,
			_channel,
			_address,
			_bits,
			_storagebits,
			_shift
	)

Value:

__AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
        _storagebits, _shift, "supply", IIO_VOLTAGE)

Definition at line 168 of file ad_sigma_delta.h.

#define AD_SD_TEMP_CHANNEL	(		_si,
			_address,
			_bits,
			_storagebits,
			_shift
	)

Value:

__AD_SD_CHANNEL(_si, 0, -1, _address, _bits, \
        _storagebits, _shift, NULL, IIO_TEMP)

Definition at line 164 of file ad_sigma_delta.h.

Enumeration Type Documentation

enum ad_sigma_delta_mode

Enumerator:

AD_SD_MODE_CONTINUOUS
AD_SD_MODE_SINGLE
AD_SD_MODE_IDLE
AD_SD_MODE_POWERDOWN

Definition at line 12 of file ad_sigma_delta.h.

Function Documentation

int ad_sd_calibrate_all	(	struct ad_sigma_delta *	sigma_delta,
		const struct ad_sd_calib_data *	cb,
		unsigned int	n
	)

ad_sd_calibrate_all() - Performs channel calibration : The sigma delta device : Array of channels and calibration type to perform
: Number of items in cb

Returns 0 on success, an error code otherwise.

Definition at line 223 of file ad_sigma_delta.c.

void ad_sd_cleanup_buffer_and_trigger

(

struct iio_dev *

indio_dev

)

ad_sd_cleanup_buffer_and_trigger() - : The IIO device

Definition at line 528 of file ad_sigma_delta.c.

int ad_sd_init	(	struct ad_sigma_delta *	sigma_delta,
		struct iio_dev *	indio_dev,
		struct spi_device *	spi,
		const struct ad_sigma_delta_info *	info
	)

ad_sd_init() - Initializes a ad_sigma_delta struct : The ad_sigma_delta device : The IIO device which the Sigma Delta device is used for : The SPI device for the ad_sigma_delta device : Device specific callbacks and options

This function needs to be called before any other operations are performed on the ad_sigma_delta struct.

Definition at line 545 of file ad_sigma_delta.c.

int ad_sd_read_reg	(	struct ad_sigma_delta *	sigma_delta,
		unsigned int	reg,
		unsigned int	size,
		unsigned int *	val
	)

ad_sd_read_reg() - Read a register

: The sigma delta device : Address of the register : Size of the register (1-4) : Read value

Returns 0 on success, an error code otherwise.

Definition at line 146 of file ad_sigma_delta.c.

void ad_sd_set_comm	(	struct ad_sigma_delta *	sigma_delta,
		uint8_t	comm
	)

ad_sd_set_comm() - Set communications register

: The sigma delta device : New value for the communications register

Definition at line 40 of file ad_sigma_delta.c.

int ad_sd_setup_buffer_and_trigger

(

struct iio_dev *

indio_dev

)

ad_sd_setup_buffer_and_trigger() - : The IIO device

Definition at line 505 of file ad_sigma_delta.c.

int ad_sd_validate_trigger	(	struct iio_dev *	indio_dev,
		struct iio_trigger *	trig
	)

ad_sd_validate_trigger() - validate_trigger callback for ad_sigma_delta devices : The IIO device : The new trigger

Returns: 0 if the 'trig' matches the trigger registered by the ad_sigma_delta device, -EINVAL otherwise.

Definition at line 431 of file ad_sigma_delta.c.

int ad_sd_write_reg	(	struct ad_sigma_delta *	sigma_delta,
		unsigned int	reg,
		unsigned int	size,
		unsigned int	val
	)

ad_sd_write_reg() - Write a register

: The sigma delta device : Address of the register : Size of the register (0-3) : Value to write to the register

Returns 0 on success, an error code otherwise.

Definition at line 58 of file ad_sigma_delta.c.

int ad_sigma_delta_single_conversion	(	struct iio_dev *	indio_dev,
		const struct iio_chan_spec *	chan,
		int *	val
	)

ad_sigma_delta_single_conversion() - Performs a single data conversion : The IIO device : The conversion is done for this channel : Pointer to the location where to store the read value

Returns: 0 on success, an error value otherwise.

Definition at line 247 of file ad_sigma_delta.c.

Variable Documentation

enum ad_sigma_delta_mode __attribute__