Analog Devices / Mbed OS EVAL-AD7768-1

Program files for Example program for EVAL-AD7768-1

Dependencies:   platform_drivers

Embed: (wiki syntax)

« Back to documentation index

ad77681.c File Reference
Functions

ad77681.c File Reference

Implementation of AD7768-1 Driver. More...

Go to the source code of this file.

Functions

uint8_t ad77681_compute_crc8 (uint8_t *data, uint8_t data_size, uint8_t init_val)
 Compute CRC8 checksum.
uint8_t ad77681_compute_xor (uint8_t *data, uint8_t data_size, uint8_t init_val)
 Compute XOR checksum.
int32_t ad77681_spi_reg_read (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t *reg_data)
 Read from device.
int32_t ad77681_spi_reg_write (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t reg_data)
 Write to device.
int32_t ad77681_spi_read_mask (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t mask, uint8_t *data)
 SPI read from device using a mask.
int32_t ad77681_spi_write_mask (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t mask, uint8_t data)
 SPI write to device using a mask.
uint8_t ad77681_get_rx_buf_len (struct ad77681_dev *dev)
 Helper function to get the number of rx bytes.
uint8_t ad77681_get_frame_byte (struct ad77681_dev *dev)
 Helper function to get the number of SPI 16bit frames for INTERRUPT ADC DATA READ.
int32_t ad77681_spi_read_adc_data (struct ad77681_dev *dev, uint8_t *adc_data, enum ad77681_data_read_mode mode)
 Read conversion result from device.
int32_t ad77681_CRC_status_handling (struct ad77681_dev *dev, uint16_t *data_buffer)
 CRC and status bit handling after each readout form the ADC.
int32_t ad77681_data_to_voltage (struct ad77681_dev *dev, uint32_t *raw_code, double *voltage)
 Conversion from measured data to voltage.
int32_t ad77681_update_sample_rate (struct ad77681_dev *dev)
 Update ADCs sample rate depending on MCLK, MCLK_DIV and filter settings.
int32_t ad77681_SINC3_ODR (struct ad77681_dev *dev, uint16_t *sinc3_dec_reg, float sinc3_odr)
 Get SINC3 filter oversampling ratio register value based on user's inserted output data rate ODR.
int32_t ad77681_set_power_mode (struct ad77681_dev *dev, enum ad77681_power_mode mode)
 Set the power consumption mode of the ADC core.
int32_t ad77681_set_mclk_div (struct ad77681_dev *dev, enum ad77681_mclk_div clk_div)
 Set the MCLK divider.
int32_t ad77681_set_VCM_output (struct ad77681_dev *dev, enum ad77681_VCM_out VCM_out)
 Set the VCM output.
int32_t ad77681_set_AINn_buffer (struct ad77681_dev *dev, enum ad77681_AINn_precharge AINn)
 Set the AIN- precharge buffer.
int32_t ad77681_set_AINp_buffer (struct ad77681_dev *dev, enum ad77681_AINp_precharge AINp)
 Set the AIN+ precharge buffer.
int32_t ad77681_set_REFn_buffer (struct ad77681_dev *dev, enum ad77681_REFn_buffer REFn)
 Set the REF- reference buffer.
int32_t ad77681_set_REFp_buffer (struct ad77681_dev *dev, enum ad77681_REFp_buffer REFp)
 Set the REF+ reference buffer.
int32_t ad77681_set_filter_type (struct ad77681_dev *dev, enum ad77681_sinc5_fir_decimate decimate, enum ad77681_filter_type filter, uint16_t sinc3_osr)
 Set filter type and decimation ratio.
int32_t ad77681_set_50HZ_rejection (struct ad77681_dev *dev, uint8_t enable)
 Enable 50/60 Hz rejection.
int32_t ad77681_set_continuos_read (struct ad77681_dev *dev, enum ad77681_continuous_read continuous_enable)
 Set the REF- reference buffer.
int32_t ad77681_power_down (struct ad77681_dev *dev, enum ad77681_sleep_wake sleep_wake)
 Power down / power up the device.
int32_t ad77681_set_conv_mode (struct ad77681_dev *dev, enum ad77681_conv_mode conv_mode, enum ad77681_conv_diag_mux diag_mux_sel, bool conv_diag_sel)
 Conversion mode and source select.
int32_t ad77681_set_convlen (struct ad77681_dev *dev, enum ad77681_conv_len conv_len)
 Set the Conversion Result Output Length.
int32_t ad77681_set_crc_sel (struct ad77681_dev *dev, enum ad77681_crc_sel crc_sel)
 Activates CRC on all SPI transactions and Selects CRC method as XOR or 8-bit polynomial.
int32_t ad77681_set_status_bit (struct ad77681_dev *dev, bool status_bit)
 Enables Status bits output.
int32_t ad77681_soft_reset (struct ad77681_dev *dev)
 Device reset over SPI.
int32_t ad77681_initiate_sync (struct ad77681_dev *dev)
 Initiate a SYNC_OUT pulse over spi.
int32_t ad77681_apply_offset (struct ad77681_dev *dev, uint32_t value)
 Write to offset registers.
int32_t ad77681_apply_gain (struct ad77681_dev *dev, uint32_t value)
 Write to gain registers.
int32_t ad77681_programmable_filter (struct ad77681_dev *dev, const float *coeffs, uint8_t num_coeffs)
 Upload sequence for Programmamble FIR filter.
int32_t ad77681_gpio_read (struct ad77681_dev *dev, uint8_t *value, enum ad77681_gpios gpio_number)
 Read value from GPIOs present in AD7768-1 separately, or all GPIOS at once.
int32_t ad77681_gpio_write (struct ad77681_dev *dev, uint8_t value, enum ad77681_gpios gpio_number)
 Write value to GPIOs present in AD7768-1 separately, or all GPIOS at once.
int32_t ad77681_gpio_inout (struct ad77681_dev *dev, uint8_t direction, enum ad77681_gpios gpio_number)
 Set AD7768-1s GPIO as input or output.
int32_t ad77681_global_gpio (struct ad77681_dev *dev, enum ad77681_gobal_gpio_enable gpio_enable)
 Enable global GPIO bit.
int32_t ad77681_scratchpad (struct ad77681_dev *dev, uint8_t *sequence)
 Read and write from ADC scratchpad register to check SPI Communication in the very beginning, during inicialization.
int32_t ad77681_gpio_open_drain (struct ad77681_dev *dev, enum ad77681_gpios gpio_number, enum ad77681_gpio_output_type output_type)
 Set AD7768-1s GPIO output type between strong driver and open drain.
int32_t ad77681_clear_error_flags (struct ad77681_dev *dev)
 Clear all error flags at once.
int32_t ad77681_error_flags_enabe (struct ad77681_dev *dev)
 Enabling error flags.
int32_t ad77681_status (struct ad77681_dev *dev, struct ad77681_status_registers *status)
 Read from all ADC status registers.
int32_t ad77681_setup (struct ad77681_dev **device, struct ad77681_init_param init_param, struct ad77681_status_registers **status)
 Initialize the device.

Detailed Description

Implementation of AD7768-1 Driver.

Author:
SPopa (stefan.popa@analog.com)

Copyright 2017(c) Analog Devices, Inc.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
  • The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
  • Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Definition in file ad77681.c.

Function Documentation

int32_t ad77681_apply_gain ( struct ad77681_dev *  dev,
uint32_t  value 
)

Write to gain registers.

Parameters:
dev- The device structure.
value- The desired value of the whole 24-bit gain register
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1112 of file ad77681.c.

int32_t ad77681_apply_offset ( struct ad77681_dev *  dev,
uint32_t  value 
)

Write to offset registers.

Parameters:
devThe device structure.
valueThe desired value of the whole 24-bit offset register
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1078 of file ad77681.c.

int32_t ad77681_clear_error_flags ( struct ad77681_dev *  dev )

Clear all error flags at once.

Parameters:
dev- The device structure.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1592 of file ad77681.c.

uint8_t ad77681_compute_crc8 ( uint8_t *  data,
uint8_t  data_size,
uint8_t  init_val 
)

Compute CRC8 checksum.

Parameters:
data- The data buffer.
data_size- The size of the data buffer.
init_val- CRC initial value.
Returns:
CRC8 checksum.

Definition at line 61 of file ad77681.c.

uint8_t ad77681_compute_xor ( uint8_t *  data,
uint8_t  data_size,
uint8_t  init_val 
)

Compute XOR checksum.

Parameters:
data- The data buffer.
data_size- The size of the data buffer.
init_val- CRC initial value.
Returns:
XOR checksum.

Definition at line 89 of file ad77681.c.

int32_t ad77681_CRC_status_handling ( struct ad77681_dev *  dev,
uint16_t *  data_buffer 
)

CRC and status bit handling after each readout form the ADC.

Parameters:
dev- The device structure.
*data_buffer- 16-bit buffer readed from the ADC containing the CRC, data and the stattus bit.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 336 of file ad77681.c.

int32_t ad77681_data_to_voltage ( struct ad77681_dev *  dev,
uint32_t *  raw_code,
double *  voltage 
)

Conversion from measured data to voltage.

Parameters:
dev- The device structure.
raw_code- ADC raw code measurements
voltage- Converted ADC code to voltage
Returns:
0 in case of success, negative error code otherwise.

Definition at line 410 of file ad77681.c.

int32_t ad77681_error_flags_enabe ( struct ad77681_dev *  dev )

Enabling error flags.

All error flags enabled by default

Parameters:
dev- The device structure.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1625 of file ad77681.c.

uint8_t ad77681_get_frame_byte ( struct ad77681_dev *  dev )

Helper function to get the number of SPI 16bit frames for INTERRUPT ADC DATA READ.

Parameters:
dev- The device structure.
Returns:
frame_16bit - the number of 16 bit SPI frames

Definition at line 252 of file ad77681.c.

uint8_t ad77681_get_rx_buf_len ( struct ad77681_dev *  dev )

Helper function to get the number of rx bytes.

Parameters:
dev- The device structure.
Returns:
rx_buf_len - the number of rx bytes

Definition at line 231 of file ad77681.c.

int32_t ad77681_global_gpio ( struct ad77681_dev *  dev,
enum ad77681_gobal_gpio_enable  gpio_enable 
)

Enable global GPIO bit.

This bit must be set high to change GPIO settings.

Parameters:
dev- The device structure.
gpio_enable- Enable or diable the global GPIO pin Accepted values: AD77681_GLOBAL_GPIO_ENABLE AD77681_GLOBAL_GPIO_DISABLE
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1493 of file ad77681.c.

int32_t ad77681_gpio_inout ( struct ad77681_dev *  dev,
uint8_t  direction,
enum ad77681_gpios  gpio_number 
)

Set AD7768-1s GPIO as input or output.

Parameters:
dev- The device structure.
direction- Direction of the GPIO Accepted values: GPIO_INPUT GPIO_OUTPUT 4-bit value for all gpios
gpio_number- Number of GPIO, which will be affected Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1439 of file ad77681.c.

int32_t ad77681_gpio_open_drain ( struct ad77681_dev *  dev,
enum ad77681_gpios  gpio_number,
enum ad77681_gpio_output_type  output_type 
)

Set AD7768-1s GPIO output type between strong driver and open drain.

GPIO3 can not be accessed!

Parameters:
dev- The device structure.
gpio_number- AD7768-1s GPIO to be affected (Only GPIO0, GPIO1 and GPIO2) Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_ALL_GPIOS
output_type- Output type of the GPIO Accepted values: AD77681_GPIO_STRONG_DRIVER AD77681_GPIO_OPEN_DRAIN
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1548 of file ad77681.c.

int32_t ad77681_gpio_read ( struct ad77681_dev *  dev,
uint8_t *  value,
enum ad77681_gpios  gpio_number 
)

Read value from GPIOs present in AD7768-1 separately, or all GPIOS at once.

Parameters:
dev- The device structure.
value- Readed value.
gpio_number- Number of GPIO, the value will be written into Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1319 of file ad77681.c.

int32_t ad77681_gpio_write ( struct ad77681_dev *  dev,
uint8_t  value,
enum ad77681_gpios  gpio_number 
)

Write value to GPIOs present in AD7768-1 separately, or all GPIOS at once.

Parameters:
dev- The device structure.
value- Value to be written into GPIO Accepted values: GPIO_HIGH GPIO_LOW 4-bit value for all gpios
gpio_number- Number of GPIO, the value will be written into Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1379 of file ad77681.c.

int32_t ad77681_initiate_sync ( struct ad77681_dev *  dev )

Initiate a SYNC_OUT pulse over spi.

Parameters:
dev- The device structure.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1064 of file ad77681.c.

int32_t ad77681_power_down ( struct ad77681_dev *  dev,
enum ad77681_sleep_wake  sleep_wake 
)

Power down / power up the device.

Parameters:
dev- The device structure.
sleep_wake- Power down, or power up the ADC Accepted values: AD77681_SLEEP AD77681_WAKE
Returns:
0 in case of success, negative error code otherwise.

Definition at line 873 of file ad77681.c.

int32_t ad77681_programmable_filter ( struct ad77681_dev *  dev,
const float *  coeffs,
uint8_t  num_coeffs 
)

Upload sequence for Programmamble FIR filter.

Parameters:
dev- The device structure.
coeffs- Pointer to the desired filter coefficients array to be written
num_coeffs- Count of active filter coeffs
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1147 of file ad77681.c.

int32_t ad77681_scratchpad ( struct ad77681_dev *  dev,
uint8_t *  sequence 
)

Read and write from ADC scratchpad register to check SPI Communication in the very beginning, during inicialization.

Parameters:
dev- The device structure.
sequence- The sequence which will be written into scratchpad and the readed sequence will be returned
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1510 of file ad77681.c.

int32_t ad77681_set_50HZ_rejection ( struct ad77681_dev *  dev,
uint8_t  enable 
)

Enable 50/60 Hz rejection.

Parameters:
dev- The device structure.
enable- The positive reference buffer selector Accepted values: true false
Returns:
0 in case of success, negative error code otherwise.

Definition at line 824 of file ad77681.c.

int32_t ad77681_set_AINn_buffer ( struct ad77681_dev *  dev,
enum ad77681_AINn_precharge  AINn 
)

Set the AIN- precharge buffer.

Parameters:
dev- The device structure.
AINn- The negative analog input precharge buffer selector Accepted values: AD77681_AINn_ENABLED AD77681_AINn_DISABLED
Returns:
0 in case of success, negative error code otherwise.

Definition at line 644 of file ad77681.c.

int32_t ad77681_set_AINp_buffer ( struct ad77681_dev *  dev,
enum ad77681_AINp_precharge  AINp 
)

Set the AIN+ precharge buffer.

Parameters:
dev- The device structure.
AINp- The positive analog input precharge buffer selector Accepted values: AD77681_AINp_ENABLED AD77681_AINp_DISABLED
Returns:
0 in case of success, negative error code otherwise.

Definition at line 668 of file ad77681.c.

int32_t ad77681_set_continuos_read ( struct ad77681_dev *  dev,
enum ad77681_continuous_read  continuous_enable 
)

Set the REF- reference buffer.

Parameters:
dev- The device structure.
continuous_enable- Continous read enable Accepted values: AD77681_CONTINUOUS_READ_ENABLE AD77681_CONTINUOUS_READ_DISABLE
Returns:
0 in case of success, negative error code otherwise.

Definition at line 845 of file ad77681.c.

int32_t ad77681_set_conv_mode ( struct ad77681_dev *  dev,
enum ad77681_conv_mode  conv_mode,
enum ad77681_conv_diag_mux  diag_mux_sel,
bool  conv_diag_sel 
)

Conversion mode and source select.

Parameters:
dev- The device structure.
conv_mode- Sets the conversion mode of the ADC Accepted values: AD77681_CONV_CONTINUOUS AD77681_CONV_ONE_SHOT AD77681_CONV_SINGLE AD77681_CONV_PERIODIC
diag_mux_sel- Selects which signal to route through diagnostic mux Accepted values: AD77681_TEMP_SENSOR AD77681_AIN_SHORT AD77681_POSITIVE_FS AD77681_NEGATIVE_FS
conv_diag_sel- Select the input for conversion as AIN or diagnostic mux Accepted values: true false
Returns:
0 in case of success, negative error code otherwise.

Definition at line 912 of file ad77681.c.

int32_t ad77681_set_convlen ( struct ad77681_dev *  dev,
enum ad77681_conv_len  conv_len 
)

Set the Conversion Result Output Length.

Parameters:
dev- The device structure.
conv_len- The MCLK divider. Accepted values: AD77681_CONV_24BIT AD77681_CONV_16BIT
Returns:
0 in case of success, negative error code otherwise.

Definition at line 951 of file ad77681.c.

int32_t ad77681_set_crc_sel ( struct ad77681_dev *  dev,
enum ad77681_crc_sel  crc_sel 
)

Activates CRC on all SPI transactions and Selects CRC method as XOR or 8-bit polynomial.

Parameters:
dev- The device structure.
crc_sel- The CRC type. Accepted values: AD77681_CRC AD77681_XOR AD77681_NO_CRC
Returns:
0 in case of success, negative error code otherwise.

Definition at line 979 of file ad77681.c.

int32_t ad77681_set_filter_type ( struct ad77681_dev *  dev,
enum ad77681_sinc5_fir_decimate  decimate,
enum ad77681_filter_type  filter,
uint16_t  sinc3_osr 
)

Set filter type and decimation ratio.

Parameters:
dev- The device structure.
decimate- Decimation ratio of filter Accepted values: AD77681_SINC5_FIR_DECx32 AD77681_SINC5_FIR_DECx64 AD77681_SINC5_FIR_DECx128 AD77681_SINC5_FIR_DECx256 AD77681_SINC5_FIR_DECx512 AD77681_SINC5_FIR_DECx1024
filter- Select filter type Accepted values: AD77681_SINC5 AD77681_SINC5_DECx8 AD77681_SINC5_DECx16 AD77681_SINC3 AD77681_FIR
sinc3_osr- Select decimation ratio for SINC3 filter separately as integer from 0 to 8192. See the AD7768-1 datasheet for more info
Returns:
0 in case of success, negative error code otherwise.

Definition at line 757 of file ad77681.c.

int32_t ad77681_set_mclk_div ( struct ad77681_dev *  dev,
enum ad77681_mclk_div  clk_div 
)

Set the MCLK divider.

Parameters:
dev- The device structure.
clk_div- The MCLK divider. Accepted values: AD77681_MCLK_DIV_16 AD77681_MCLK_DIV_8 AD77681_MCLK_DIV_4 AD77681_MCLK_DIV_2
Returns:
0 in case of success, negative error code otherwise.

Definition at line 590 of file ad77681.c.

int32_t ad77681_set_power_mode ( struct ad77681_dev *  dev,
enum ad77681_power_mode  mode 
)

Set the power consumption mode of the ADC core.

Parameters:
dev- The device structure.
mode- The power mode. Accepted values: AD77681_ECO AD77681_MEDIAN AD77681_FAST
Returns:
0 in case of success, negative error code otherwise.

Definition at line 564 of file ad77681.c.

int32_t ad77681_set_REFn_buffer ( struct ad77681_dev *  dev,
enum ad77681_REFn_buffer  REFn 
)

Set the REF- reference buffer.

Parameters:
dev- The device structure.
REFn- The negative reference buffer selector Accepted values: AD77681_BUFn_DISABLED AD77681_BUFn_ENABLED AD77681_BUFn_FULL_BUFFER_ON
Returns:
0 in case of success, negative error code otherwise.

Definition at line 693 of file ad77681.c.

int32_t ad77681_set_REFp_buffer ( struct ad77681_dev *  dev,
enum ad77681_REFp_buffer  REFp 
)

Set the REF+ reference buffer.

Parameters:
dev- The device structure.
REFp- The positive reference buffer selector Accepted values: AD77681_BUFp_DISABLED AD77681_BUFp_ENABLED AD77681_BUFp_FULL_BUFFER_ON
Returns:
0 in case of success, negative error code otherwise.

Definition at line 718 of file ad77681.c.

int32_t ad77681_set_status_bit ( struct ad77681_dev *  dev,
bool  status_bit 
)

Enables Status bits output.

Parameters:
dev- The device structure.
status_bit- enable or disable status bit Accepted values: true false
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1017 of file ad77681.c.

int32_t ad77681_set_VCM_output ( struct ad77681_dev *  dev,
enum ad77681_VCM_out  VCM_out 
)

Set the VCM output.

Parameters:
dev- The device structure.
VCM_out- The VCM output voltage. Accepted values: AD77681_VCM_HALF_VCC AD77681_VCM_2_5V AD77681_VCM_2_05V AD77681_VCM_1_9V AD77681_VCM_1_65V AD77681_VCM_1_1V AD77681_VCM_0_9V AD77681_VCM_OFF
Returns:
0 in case of success, negative error code otherwise.

Definition at line 620 of file ad77681.c.

int32_t ad77681_setup ( struct ad77681_dev **  device,
struct ad77681_init_param  init_param,
struct ad77681_status_registers **  status 
)

Initialize the device.

Parameters:
device- The device structure.
init_param- The structure that contains the device initial parameters.
status- The structure that will contains the ADC status
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1757 of file ad77681.c.

int32_t ad77681_SINC3_ODR ( struct ad77681_dev *  dev,
uint16_t *  sinc3_dec_reg,
float  sinc3_odr 
)

Get SINC3 filter oversampling ratio register value based on user's inserted output data rate ODR.

Parameters:
dev- The device structure.
sinc3_dec_reg- Returned closest value of SINC3 register
sinc3_odr- Desired output data rage
Returns:
0 in case of success, negative error code otherwise.

Definition at line 516 of file ad77681.c.

int32_t ad77681_soft_reset ( struct ad77681_dev *  dev )

Device reset over SPI.

Parameters:
dev- The device structure.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1041 of file ad77681.c.

int32_t ad77681_spi_read_adc_data ( struct ad77681_dev *  dev,
uint8_t *  adc_data,
enum ad77681_data_read_mode  mode 
)

Read conversion result from device.

Parameters:
dev- The device structure.
adc_data- The conversion result data
mode- Data read mode Accepted values: AD77681_REGISTER_DATA_READ AD77681_CONTINUOUS_DATA_READ
Returns:
0 in case of success, negative error code otherwise.

Definition at line 279 of file ad77681.c.

int32_t ad77681_spi_read_mask ( struct ad77681_dev *  dev,
uint8_t  reg_addr,
uint8_t  mask,
uint8_t *  data 
)

SPI read from device using a mask.

Parameters:
dev- The device structure.
reg_addr- The register address.
mask- The mask.
data- The register data.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 188 of file ad77681.c.

int32_t ad77681_spi_reg_read ( struct ad77681_dev *  dev,
uint8_t  reg_addr,
uint8_t *  reg_data 
)

Read from device.

Parameters:
dev- The device structure.
reg_addr- The register address.
reg_data- The register data.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 112 of file ad77681.c.

int32_t ad77681_spi_reg_write ( struct ad77681_dev *  dev,
uint8_t  reg_addr,
uint8_t  reg_data 
)

Write to device.

Parameters:
dev- The device structure.
reg_addr- The register address.
reg_data- The register data.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 162 of file ad77681.c.

int32_t ad77681_spi_write_mask ( struct ad77681_dev *  dev,
uint8_t  reg_addr,
uint8_t  mask,
uint8_t  data 
)

SPI write to device using a mask.

Parameters:
dev- The device structure.
reg_addr- The register address.
mask- The mask.
data- The register data.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 210 of file ad77681.c.

int32_t ad77681_status ( struct ad77681_dev *  dev,
struct ad77681_status_registers *  status 
)

Read from all ADC status registers.

Parameters:
dev- The device structure.
status- Structure with all satuts bits
Returns:
0 in case of success, negative error code otherwise.

Definition at line 1709 of file ad77681.c.

int32_t ad77681_update_sample_rate ( struct ad77681_dev *  dev )

Update ADCs sample rate depending on MCLK, MCLK_DIV and filter settings.

Parameters:
dev- The device structure.
Returns:
0 in case of success, negative error code otherwise.

Definition at line 433 of file ad77681.c.

Generated on Tue Jul 12 2022 19:15:23 by  doxygen 1.7.2