Analog Devices / Mbed OS EVAL-AD4130

Example program for EVAL-AD4130

Dependencies:   tempsensors sdp_k1_sdram

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ad4130_iio.c File Reference
Functions | Variables

ad4130_iio.c File Reference

Implementation of AD4130 IIO application interfaces. More...

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Functions

static int iio_ad4130_attr_get (void *device, char *buf, uint32_t len, const struct iio_ch_info *channel, intptr_t priv)
 Getter functions for AD4130 attributes.
static int iio_ad4130_attr_set (void *device, char *buf, uint32_t len, const struct iio_ch_info *channel, intptr_t priv)
 Setter functions for AD4130 attributes.
static void update_vltg_conv_scale_factor (uint8_t chn)
 Update scale factor for adc data to voltage conversion for IIO client.
static void perform_sensor_measurement_and_update_scale (uint32_t adc_raw, uint16_t chn)
 Perform the sensor measurement as per current demo config and update the adc_raw value to sensor conversion scale factor for IIO client.
static int get_calibration_status (char *buf, uint32_t len, uint8_t chn, intptr_t id)
 Getter for the ADC internal/system calibration.
static int set_calibration_routine (char *buf, uint32_t len, uint8_t chn, intptr_t id)
 Setter for the ADC internal/system calibration.
static int get_loadcell_calibration_status (char *buf, uint32_t len, uint8_t chn, intptr_t id)
 Getter for the Loadcell offset/gain calibration.
static int set_loadcell_calibration_status (char *buf, uint32_t len, uint8_t chn, intptr_t id)
 Setter for the Loadcell offset/gain calibration.
static int32_t perform_adc_calibration (uint8_t chn, enum ad413x_adc_mode calib_mode)
 Perform the ADC internal/system calibration.
int32_t debug_reg_read (void *dev, uint32_t reg, uint32_t *readval)
 Read the debug register value.
int32_t debug_reg_write (void *dev, uint32_t reg, uint32_t writeval)
 Write into the debug register.
static int32_t iio_ad4130_submit_buffer (struct iio_device_data *iio_dev_data)
 Read buffer data corresponding to AD4130 ADC IIO device.
static int32_t iio_ad4130_prepare_transfer (void *dev, uint32_t ch_mask)
 Prepare for data transfer.
static int32_t iio_ad4130_end_transfer (void *dev)
 Terminate current data transfer.
int32_t ad4130_iio_init (struct iio_device **desc)
 Init for reading/writing and parameterization of a ad4130 IIO device.
int32_t ad4130_iio_remove (struct iio_desc *desc)
 Release resources allocated for IIO device.
int32_t ad4130_iio_initialize (void)
 Initialize the IIO interface for AD4130 IIO device.
void ad4130_iio_event_handler (void)
 Run the AD4130 IIO event handler.

Variables

static const char dev_name [] = ACTIVE_DEVICE_NAME
 Device name.
struct ad413x_dev * ad4130_dev_inst = NULL
 Pointer to the struct representing the AD4130 IIO device.

Detailed Description

Implementation of AD4130 IIO application interfaces.

This module acts as an interface for AD4130 IIO application

Copyright (c) 2020-2022 Analog Devices, Inc. All rights reserved.

This software is proprietary to Analog Devices, Inc. and its licensors. By using this software you agree to the terms of the associated Analog Devices Software License Agreement.

Definition in file ad4130_iio.c.

Function Documentation

void ad4130_iio_event_handler ( void   )

Run the AD4130 IIO event handler.

Returns:
none

This function monitors the new IIO client event

Definition at line 1151 of file ad4130_iio.c.

int32_t ad4130_iio_init ( struct iio_device **  desc )

Init for reading/writing and parameterization of a ad4130 IIO device.

Parameters:
desc[in,out]- IIO device descriptor
Returns:
0 in case of success, negative error code otherwise

Definition at line 1014 of file ad4130_iio.c.

int32_t ad4130_iio_initialize ( void   )

Initialize the IIO interface for AD4130 IIO device.

Returns:
0 in case of success, negative error code otherwise

Definition at line 1089 of file ad4130_iio.c.

int32_t ad4130_iio_remove ( struct iio_desc *  desc )

Release resources allocated for IIO device.

Parameters:
desc[in]- IIO device descriptor
Returns:
0 in case of success, negative error code otherwise

Definition at line 1069 of file ad4130_iio.c.

int32_t debug_reg_read ( void *  dev,
uint32_t  reg,
uint32_t *  readval 
)

Read the debug register value.

Parameters:
dev[in]-Pointer to IIO device instance
reg[in]-Register address to read from
readval[in,out]-Pointer to variable to read data into
Returns:
0 in case of success or negative value otherwise

Definition at line 831 of file ad4130_iio.c.

int32_t debug_reg_write ( void *  dev,
uint32_t  reg,
uint32_t  writeval 
)

Write into the debug register.

Parameters:
dev[in]-Pointer to IIO device instance
reg[in]-Register address to write into
writeval[in]-Register value to write
Returns:
0 in case of success or negative value otherwise

Definition at line 854 of file ad4130_iio.c.

static int get_calibration_status ( char *  buf,
uint32_t  len,
uint8_t  chn,
intptr_t  id 
) [static]

Getter for the ADC internal/system calibration.

Parameters:
buf[in]-pointer to buffer holding attribute value
len[in]-length of buffer string data
chn[in]-ADC channel
id[in]-Attribute ID
Returns:
Number of characters read/written

Definition at line 605 of file ad4130_iio.c.

static int get_loadcell_calibration_status ( char *  buf,
uint32_t  len,
uint8_t  chn,
intptr_t  id 
) [static]

Getter for the Loadcell offset/gain calibration.

Parameters:
buf[in]-pointer to buffer holding attribute value
len[in]-length of buffer string data
chn[in]-ADC channel
id[in]-Attribute ID
Returns:
Number of characters read/written

Definition at line 758 of file ad4130_iio.c.

static int iio_ad4130_attr_get ( void *  device,
char *  buf,
uint32_t  len,
const struct iio_ch_info *  channel,
intptr_t  priv 
) [static]

Getter functions for AD4130 attributes.

Parameters:
device[in]-Pointer to IIO device instance
buf[in]-IIO input data buffer
len[in]-Number of input bytes
channel[in]- Input channel
priv[in]- Attribute private ID
Returns:
0 in case of success, negative error code otherwise This sampling_frequency attribute is used to define the timeout period in IIO client during data capture. Timeout (1 chn) = (requested samples * sampling frequency) + 1sec Timeout (n chns) = ((requested samples * n) / sampling frequency) + 1sec e.g. If sampling frequency = 31.5KSPS, requested samples = 4000, n=1min or 8max Timeout (1 chn) = (4000 / 315000) + 1 = ~1.13sec Timeout (8 chns) = ((4000 * 8) / 315000) + 1 = ~2.01sec

Definition at line 338 of file ad4130_iio.c.

static int iio_ad4130_attr_set ( void *  device,
char *  buf,
uint32_t  len,
const struct iio_ch_info *  channel,
intptr_t  priv 
) [static]

Setter functions for AD4130 attributes.

Parameters:
device[in]-Pointer to IIO device instance
buf[in]-IIO input data buffer
len[in]-Number of input bytes
channel[in]- Input channel
priv[in]- Attribute private ID
Returns:
0 in case of success, negative error code otherwise

Definition at line 439 of file ad4130_iio.c.

static int32_t iio_ad4130_end_transfer ( void *  dev ) [static]

Terminate current data transfer.

Parameters:
dev[in]- IIO device instance
Returns:
0 in case of success or negative value otherwise

Definition at line 913 of file ad4130_iio.c.

static int32_t iio_ad4130_prepare_transfer ( void *  dev,
uint32_t  ch_mask 
) [static]

Prepare for data transfer.

Parameters:
dev[in]- IIO device instance
ch_mask[in]- Channels select mask
Returns:
0 in case of success or negative value otherwise

Definition at line 902 of file ad4130_iio.c.

static int32_t iio_ad4130_submit_buffer ( struct iio_device_data *  iio_dev_data ) [static]

Read buffer data corresponding to AD4130 ADC IIO device.

Parameters:
iio_dev_data[in]- IIO device data instance
Returns:
0 in case of success or negative value otherwise

Definition at line 875 of file ad4130_iio.c.

static int32_t perform_adc_calibration ( uint8_t  chn,
enum ad413x_adc_mode  calib_mode 
) [static]

Perform the ADC internal/system calibration.

Parameters:
chn[in]- ADC channel
calib_mode[in]- ADC calibration mode
Returns:
0 in case of success, negative error code otherwise

Definition at line 474 of file ad4130_iio.c.

static void perform_sensor_measurement_and_update_scale ( uint32_t  adc_raw,
uint16_t  chn 
) [static]

Perform the sensor measurement as per current demo config and update the adc_raw value to sensor conversion scale factor for IIO client.

Parameters:
adc_raw[in]- ADC raw value
chn[in]- ADC channel
Returns:
none

Definition at line 925 of file ad4130_iio.c.

static int set_calibration_routine ( char *  buf,
uint32_t  len,
uint8_t  chn,
intptr_t  id 
) [static]

Setter for the ADC internal/system calibration.

Parameters:
buf[in]-pointer to buffer holding attribute value
len[in]-length of buffer string data
chn[in]-ADC channel
id[in]-Attribute ID
Returns:
Number of characters read/written

Definition at line 675 of file ad4130_iio.c.

static int set_loadcell_calibration_status ( char *  buf,
uint32_t  len,
uint8_t  chn,
intptr_t  id 
) [static]

Setter for the Loadcell offset/gain calibration.

Parameters:
buf[in]-pointer to buffer holding attribute value
len[in]-length of buffer string data
chn[in]-ADC channel
id[in]-Attribute ID
Returns:
Number of characters read/written

Definition at line 785 of file ad4130_iio.c.

static void update_vltg_conv_scale_factor ( uint8_t  chn ) [static]

Update scale factor for adc data to voltage conversion for IIO client.

Parameters:
chn[in]- Input channel
Returns:
none

Definition at line 968 of file ad4130_iio.c.

Variable Documentation

struct ad413x_dev* ad4130_dev_inst = NULL

Pointer to the struct representing the AD4130 IIO device.

Definition at line 124 of file ad4130_iio.c.

const char dev_name[] = ACTIVE_DEVICE_NAME [static]

Device name.

Definition at line 119 of file ad4130_iio.c.

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