ad4134_support.c File Reference

#include <stdio.h>
#include "ad4134_support.h"
#include "no_os_gpio.h"
#include "no_os_error.h"
#include "no_os_delay.h"
#include "app_config.h"
#include "ad4134_iio.h"
#include "stm32_tdm_support.h"

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Macros
#define	GPIO_MIN_DBNCE_CNT   (2U)
#define	ODR_TRIGGER_WAIT_DBNCE_CNT   (20000U)
#define	DUAL_CHN_MODE_OFFSET   (2)
#define	LT6373_GPIO_DIR_CTRL_VAL   0xFF
#define	LT6373_GPIO_DATA_VAL   0x84
#define	DCLK_FREQ_SELECT   3
#define	MCLK_FREQ   (48000000)
#define	MCLK_DIVISOR   (2)
#define	ODR_INT_VAL   (uint32_t)(MCLK_FREQ / MCLK_DIVISOR / SAMPLING_RATE)
#define	ODR_VAL_INT_LSB   (uint8_t)(ODR_INT_VAL)
#define	ODR_VAL_INT_MID   (uint8_t)(ODR_INT_VAL >> 8)
#define	ODR_VAL_INT_MSB   (uint8_t)(ODR_INT_VAL >> 16)
#define	ODR_VAL_FLT_LSB   0x00
#define	ODR_VAL_FLT_MID0   0x00
#define	ODR_VAL_FLT_MID1   0x00
#define	ODR_VAL_FLT_MSB   0x00

Functions
int32_t	ad7134_data_capture_init (struct ad713x_dev *dev)
	Perform the data capture initialization.
int32_t	ad7134_read_data (uint16_t *adc_data, uint8_t curr_chn)
	Read ADC data over DOUT0 and DOUT1 pins using bit-banging method.
int32_t	ad7134_read_tdm_data (uint16_t *adc_data, uint8_t curr_chn)
	Read ADC data over SAI TDM Peripheral.
int32_t	ad7134_read_all_channels (uint16_t *chn_data)
	Read all chahnnels over DOUT0 and DOUT1 pins using bit-banging method.
int32_t	ad7134_perform_conv_and_read_sample (uint8_t input_chn, uint16_t *adc_data)
	Read ADC single sample data.

Macro Definition Documentation

DCLK_FREQ_SELECT

#define DCLK_FREQ_SELECT   3

DUAL_CHN_MODE_OFFSET

#define DUAL_CHN_MODE_OFFSET   (2)

GPIO_MIN_DBNCE_CNT

#define GPIO_MIN_DBNCE_CNT   (2U)

LT6373_GPIO_DATA_VAL

#define LT6373_GPIO_DATA_VAL   0x84

LT6373_GPIO_DIR_CTRL_VAL

#define LT6373_GPIO_DIR_CTRL_VAL   0xFF

MCLK_DIVISOR

#define MCLK_DIVISOR   (2)

MCLK_FREQ

#define MCLK_FREQ   (48000000)

ODR_INT_VAL

#define ODR_INT_VAL   (uint32_t)(MCLK_FREQ / MCLK_DIVISOR / SAMPLING_RATE)

ODR_TRIGGER_WAIT_DBNCE_CNT

#define ODR_TRIGGER_WAIT_DBNCE_CNT   (20000U)

ODR_VAL_FLT_LSB

#define ODR_VAL_FLT_LSB   0x00

ODR_VAL_FLT_MID0

#define ODR_VAL_FLT_MID0   0x00

ODR_VAL_FLT_MID1

#define ODR_VAL_FLT_MID1   0x00

ODR_VAL_FLT_MSB

#define ODR_VAL_FLT_MSB   0x00

ODR_VAL_INT_LSB

#define ODR_VAL_INT_LSB   (uint8_t)(ODR_INT_VAL)

ODR_VAL_INT_MID

#define ODR_VAL_INT_MID   (uint8_t)(ODR_INT_VAL >> 8)

ODR_VAL_INT_MSB

#define ODR_VAL_INT_MSB   (uint8_t)(ODR_INT_VAL >> 16)

Function Documentation

ad7134_data_capture_init()

int32_t ad7134_data_capture_init

(

struct ad713x_dev *

dev

)

Perform the data capture initialization.

Parameters

dev[in]

- AD7134 Device descriptor.

Returns

0 in case of success, negative error code otherwise

This function configures the AD7134 registers to capture the data

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ad7134_perform_conv_and_read_sample()

int32_t ad7134_perform_conv_and_read_sample	(	uint8_t	input_chn,
		uint16_t *	adc_data
	)

Read ADC single sample data.

Parameters

input_chn[in]	- Channel for which data is to read
adc_data[out]	- Pointer to adc data read variable

Returns

0 in case of success, negative error code otherwise

ad7134_read_all_channels()

int32_t ad7134_read_all_channels

(

uint16_t *

chn_data

)

Read all chahnnels over DOUT0 and DOUT1 pins using bit-banging method.

Parameters

chn_data[out]

- Pointer to adc data read variable

Returns

0 in case of success, negative error code otherwise

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ad7134_read_data()

int32_t ad7134_read_data	(	uint16_t *	adc_data,
		uint8_t	curr_chn
	)

Read ADC data over DOUT0 and DOUT1 pins using bit-banging method.

Parameters

adc_data[out]	- Pointer to adc data read variable
curr_chn[in]	- Channel for which data is to read

Returns

0 in case of success, negative error code otherwise

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ad7134_read_tdm_data()

int32_t ad7134_read_tdm_data	(	uint16_t *	adc_data,
		uint8_t	curr_chn
	)

Read ADC data over SAI TDM Peripheral.

Parameters

adc_data[out]	- Pointer to adc data read variable
curr_chn[in]	- Channel for which data is to read

Returns

0 in case of success, negative error code otherwise

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