Mahesh Phalke / Mbed OS EVAL-AD7689

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ad7689_data_capture.h File Reference
Functions

ad7689_data_capture.h File Reference

Header for AD7689 data capture interfaces. More...

Go to the source code of this file.

Functions

int32_t read_single_sample (uint8_t input_chn, uint32_t *raw_data)
 Read the single ADC sample (raw data) for input channel.
int32_t read_buffered_data (int8_t **pbuf, uint32_t nb_of_bytes)
 Function to read the ADC buffered raw data requested by IIO client.
int32_t prepare_data_transfer (uint32_t ch_mask, uint8_t num_of_chns, uint8_t sample_size_in_byte)
 Function to prepare the data ADC capture for new READBUFF request from IIO client (for active channels)
int32_t end_data_transfer (void)
 Function to stop data capture.
void data_capture_callback (void *ctx)
 This is an ISR (Interrupt Service Routine) to monitor end of conversion event.

Detailed Description

Header for AD7689 data capture interfaces.

Copyright (c) 2021-22 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 ad7689_data_capture.h.

Function Documentation

void data_capture_callback ( void *  ctx )

This is an ISR (Interrupt Service Routine) to monitor end of conversion event.

Parameters:
ctx[in]- Callback context (unused)
Returns:
none

This is an Interrupt callback function/ISR invoked in synchronous/asynchronous manner depending upon the application implementation. The conversion results are read into acquisition buffer and control continue to sample next channel. This continues until conversion is stopped (through IIO client command)

Definition at line 511 of file ad7689_data_capture.c.

int32_t end_data_transfer ( void   )

Function to stop data capture.

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

Definition at line 423 of file ad7689_data_capture.c.

int32_t prepare_data_transfer ( uint32_t  chn_mask,
uint8_t  num_of_chns,
uint8_t  sample_size 
)

Function to prepare the data ADC capture for new READBUFF request from IIO client (for active channels)

Parameters:
chn_mask[in]- Channels to enable for data capturing
num_of_chns[in]- ADC channel count
sample_size[in]- Sample size in bytes
Returns:
0 in case of success, negative error code otherwise

Definition at line 375 of file ad7689_data_capture.c.

int32_t read_buffered_data ( int8_t **  pbuf,
uint32_t  nb_of_bytes 
)

Function to read the ADC buffered raw data requested by IIO client.

Parameters:
pbuf[in]- Pointer to data buffer
nb_of_bytes[in]- Number of bytes to read
Returns:
0 in case of success, negative error code otherwise

Definition at line 688 of file ad7689_data_capture.c.

int32_t read_single_sample ( uint8_t  input_chn,
uint32_t *  raw_data 
)

Read the single ADC sample (raw data) for input channel.

Parameters:
input_chn[in]- Input channel to be sampled and read data for
raw_data[in,out]-ADC raw data
Returns:
0 in case of success, negative error code otherwise

Definition at line 132 of file ad7689_data_capture.c.

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