EVAL-AD7606 - Example Program for EVAL-AD7606

Analog Devices » Code » EVAL-AD7606

Example Program for EVAL-AD7606

app/iio_ad7606.c@1:819ac9aa5667, 2020-10-05 (annotated)

Committer:: mahphalke
Date:: Mon Oct 05 13:45:15 2020 +0530
Revision:: 1:819ac9aa5667
Child:: 3:83b3133f544a

AD7606 IIO Application- Initial Revision

Who changed what in which revision?

User	Revision	Line number	New contents of line
mahphalke	1:819ac9aa5667	1	/*************************************************************************//
mahphalke	1:819ac9aa5667	2	* @file iio_ad7606.c
mahphalke	1:819ac9aa5667	3	* @brief Implementation of AD7606 IIO application interfaces
mahphalke	1:819ac9aa5667	4	* @details This module acts as an interface for AD7606 IIO application
mahphalke	1:819ac9aa5667	5	********************************************************************************
mahphalke	1:819ac9aa5667	6	* Copyright (c) 2020 Analog Devices, Inc.
mahphalke	1:819ac9aa5667	7	*
mahphalke	1:819ac9aa5667	8	* This software is proprietary to Analog Devices, Inc. and its licensors.
mahphalke	1:819ac9aa5667	9	* By using this software you agree to the terms of the associated
mahphalke	1:819ac9aa5667	10	* Analog Devices Software License Agreement.
mahphalke	1:819ac9aa5667	11	*******************************************************************************/
mahphalke	1:819ac9aa5667	12
mahphalke	1:819ac9aa5667	13	/******************************************************************************/
mahphalke	1:819ac9aa5667	14	/*************************** Include Files ********************************/
mahphalke	1:819ac9aa5667	15	/******************************************************************************/
mahphalke	1:819ac9aa5667	16
mahphalke	1:819ac9aa5667	17	#include <inttypes.h>
mahphalke	1:819ac9aa5667	18	#include <string.h>
mahphalke	1:819ac9aa5667	19	#include <errno.h>
mahphalke	1:819ac9aa5667	20	#include <math.h>
mahphalke	1:819ac9aa5667	21
mahphalke	1:819ac9aa5667	22	#include "app_config.h"
mahphalke	1:819ac9aa5667	23
mahphalke	1:819ac9aa5667	24	#include "tinyiiod.h"
mahphalke	1:819ac9aa5667	25	#include "iio_ad7606.h"
mahphalke	1:819ac9aa5667	26	#include "iio_ad7606_attr.h"
mahphalke	1:819ac9aa5667	27	#include "iio_app.h"
mahphalke	1:819ac9aa5667	28	#include "iio_transport.h"
mahphalke	1:819ac9aa5667	29
mahphalke	1:819ac9aa5667	30	#include "platform_support.h"
mahphalke	1:819ac9aa5667	31	#include "spi_extra.h"
mahphalke	1:819ac9aa5667	32	#include "gpio_extra.h"
mahphalke	1:819ac9aa5667	33	#include "uart_extra.h"
mahphalke	1:819ac9aa5667	34	#include "irq_extra.h"
mahphalke	1:819ac9aa5667	35
mahphalke	1:819ac9aa5667	36	#include "ad7606.h"
mahphalke	1:819ac9aa5667	37	#include "ad7606_data_capture.h"
mahphalke	1:819ac9aa5667	38	#include "ad7606_support.h"
mahphalke	1:819ac9aa5667	39	#include "ad7606_user_config.h"
mahphalke	1:819ac9aa5667	40
mahphalke	1:819ac9aa5667	41	/******************************************************************************/
mahphalke	1:819ac9aa5667	42	/********************** Macros/Constants **********************************/
mahphalke	1:819ac9aa5667	43	/******************************************************************************/
mahphalke	1:819ac9aa5667	44
mahphalke	1:819ac9aa5667	45	/* ADC data to Voltage conversion scale factor for IIO client */
mahphalke	1:819ac9aa5667	46	#define DEFAULT_SCALE ((DEFAULT_CHN_RANGE / ADC_MAX_COUNT_BIPOLAR) * 1000)
mahphalke	1:819ac9aa5667	47
mahphalke	1:819ac9aa5667	48	/* LSB Threshold to entry into open wire detection as per datasheet */
mahphalke	1:819ac9aa5667	49	#define OPEN_DETECT_ENTRY_THRESHOLD 350
mahphalke	1:819ac9aa5667	50
mahphalke	1:819ac9aa5667	51	/* Open detect LSB threshold @50K Rpd as per datasheet */
mahphalke	1:819ac9aa5667	52	#define OPEN_DETECT_THRESHOLD_RPD50K 15
mahphalke	1:819ac9aa5667	53
mahphalke	1:819ac9aa5667	54	/* Maximum ADC calibration gain value */
mahphalke	1:819ac9aa5667	55	#define ADC_CALIBRATION_GAIN_MAX 64.0
mahphalke	1:819ac9aa5667	56
mahphalke	1:819ac9aa5667	57	/******************************************************************************/
mahphalke	1:819ac9aa5667	58	/************************* Types Declarations *****************************/
mahphalke	1:819ac9aa5667	59	/******************************************************************************/
mahphalke	1:819ac9aa5667	60
mahphalke	1:819ac9aa5667	61	/**
mahphalke	1:819ac9aa5667	62	* IIO application instance descriptor.
mahphalke	1:819ac9aa5667	63	*/
mahphalke	1:819ac9aa5667	64	static struct iio_app_desc *iio_app_desc;
mahphalke	1:819ac9aa5667	65
mahphalke	1:819ac9aa5667	66	/**
mahphalke	1:819ac9aa5667	67	* Device name.
mahphalke	1:819ac9aa5667	68	*/
mahphalke	1:819ac9aa5667	69	static const char dev_name[] = ACTIVE_DEVICE_NAME;
mahphalke	1:819ac9aa5667	70
mahphalke	1:819ac9aa5667	71	/**
mahphalke	1:819ac9aa5667	72	* Pointer to the struct representing the AD7606 IIO device
mahphalke	1:819ac9aa5667	73	*/
mahphalke	1:819ac9aa5667	74	static struct ad7606_dev *p_ad7606_dev = NULL;
mahphalke	1:819ac9aa5667	75
mahphalke	1:819ac9aa5667	76
mahphalke	1:819ac9aa5667	77	/* Device attributes with default values */
mahphalke	1:819ac9aa5667	78
mahphalke	1:819ac9aa5667	79	/* Power down mode values string representation (possible values specified in datasheet) */
mahphalke	1:819ac9aa5667	80	static char *operating_mode_str[] = {
mahphalke	1:819ac9aa5667	81	"0 (Normal Mode)",
mahphalke	1:819ac9aa5667	82	"1 (Standby Mode)",
mahphalke	1:819ac9aa5667	83	"2 (Auto Standby Mode)",
mahphalke	1:819ac9aa5667	84	"3 (Shutdown Mode)"
mahphalke	1:819ac9aa5667	85	};
mahphalke	1:819ac9aa5667	86
mahphalke	1:819ac9aa5667	87	/* Bandwidth values string */
mahphalke	1:819ac9aa5667	88	static char *bandwidth_str[] = {
mahphalke	1:819ac9aa5667	89	"0 (Low)",
mahphalke	1:819ac9aa5667	90	"1 (High)"
mahphalke	1:819ac9aa5667	91	};
mahphalke	1:819ac9aa5667	92
mahphalke	1:819ac9aa5667	93	/* Channel range values string representation (possible values specified in datasheet) */
mahphalke	1:819ac9aa5667	94	static char *chn_range_str[] = {
mahphalke	1:819ac9aa5667	95	#if defined(DEV_AD7606B)
mahphalke	1:819ac9aa5667	96	"0 (+/-2.5V SE)", "1 (+/-5.0V SE)", "2 (+/-10.0V SE)", "3 (+/-10.0V SE)",
mahphalke	1:819ac9aa5667	97	"4 (+/-10.0V SE)", "5 (+/-10.0V SE)", "6 (+/-10.0V SE)", "7 (+/-10.0V SE)",
mahphalke	1:819ac9aa5667	98	"8 (+/-10.0V SE)", "9 (+/-10.0V SE)", "10 (+/-10.0V SE)", "11 (+/-10.0V SE)",
mahphalke	1:819ac9aa5667	99	#elif defined(DEV_AD7606C_18) \|\| defined(DEV_AD7606C_16)
mahphalke	1:819ac9aa5667	100	"0 (+/-2.5V SE)", "1 (+/-5.0V SE)", "2 (+/-6.25V SE)", "3 (+/-10.0V SE)",
mahphalke	1:819ac9aa5667	101	"4 (+/-12.5V SE)", "5 (+5.0V SE)", "6 (+10.0V SE)", "7 (+12.5V SE)",
mahphalke	1:819ac9aa5667	102	"8 (+/-5.0V DE)", "9 (+/-10.0V DE)", "10 (+/-12.5V DE)", "11 (+/-20.0V DE)"
mahphalke	1:819ac9aa5667	103	#elif defined(DEV_AD7609)
mahphalke	1:819ac9aa5667	104	"0 (+/-10.0V SE)", "1 (+/-20.0V SE)"
mahphalke	1:819ac9aa5667	105	#else
mahphalke	1:819ac9aa5667	106	"0 (+/-5.0V SE)", "1 (+/-10.0V SE)"
mahphalke	1:819ac9aa5667	107	#endif
mahphalke	1:819ac9aa5667	108	};
mahphalke	1:819ac9aa5667	109
mahphalke	1:819ac9aa5667	110	/* Oversampling values string representation (possible values specified in datasheet) */
mahphalke	1:819ac9aa5667	111	static char *oversampling_val_str[] = {
mahphalke	1:819ac9aa5667	112	"0 (no oversampling)", "1 (oversampling by 2)", "2 (oversampling by 4)",
mahphalke	1:819ac9aa5667	113	"3 (oversampling by 8)", "4 (oversampling by 16)", "5 (oversampling by 32)",
mahphalke	1:819ac9aa5667	114	"6 (oversampling by 64)", "7 (oversampling by 128)", "8 (oversampling by 256)"
mahphalke	1:819ac9aa5667	115	};
mahphalke	1:819ac9aa5667	116
mahphalke	1:819ac9aa5667	117
mahphalke	1:819ac9aa5667	118	/* Channel range values string representation (possible values specified in datasheet) */
mahphalke	1:819ac9aa5667	119	static float chn_range_val[] = {
mahphalke	1:819ac9aa5667	120	#if defined(DEV_AD7606B)
mahphalke	1:819ac9aa5667	121	2.5, 5.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0
mahphalke	1:819ac9aa5667	122	#elif defined(DEV_AD7606C_18) \|\| defined(DEV_AD7606C_16)
mahphalke	1:819ac9aa5667	123	2.5, 5.0, 6.25, 10.0, 12.5, 5.0, 10.0, 12.5, 5.0, 10.0, 12.5, 20.0
mahphalke	1:819ac9aa5667	124	#elif defined(DEV_AD7609)
mahphalke	1:819ac9aa5667	125	10.0, 20.0
mahphalke	1:819ac9aa5667	126	#else
mahphalke	1:819ac9aa5667	127	5.0, 10.0
mahphalke	1:819ac9aa5667	128	#endif
mahphalke	1:819ac9aa5667	129	};
mahphalke	1:819ac9aa5667	130
mahphalke	1:819ac9aa5667	131	/* Range value per channel */
mahphalke	1:819ac9aa5667	132	static float attr_chn_range[AD7606X_ADC_CHANNELS] = {
mahphalke	1:819ac9aa5667	133	DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE,
mahphalke	1:819ac9aa5667	134	DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE, DEFAULT_CHN_RANGE
mahphalke	1:819ac9aa5667	135	};
mahphalke	1:819ac9aa5667	136
mahphalke	1:819ac9aa5667	137	/* Scale value per channel */
mahphalke	1:819ac9aa5667	138	static float attr_scale_val[AD7606X_ADC_CHANNELS] = {
mahphalke	1:819ac9aa5667	139	DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE,
mahphalke	1:819ac9aa5667	140	DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE, DEFAULT_SCALE
mahphalke	1:819ac9aa5667	141	};
mahphalke	1:819ac9aa5667	142
mahphalke	1:819ac9aa5667	143	/* Scale value per channel */
mahphalke	1:819ac9aa5667	144	static polarity_e attr_polarity_val[AD7606X_ADC_CHANNELS] = {
mahphalke	1:819ac9aa5667	145	BIPOLAR, BIPOLAR, BIPOLAR, BIPOLAR,
mahphalke	1:819ac9aa5667	146	BIPOLAR, BIPOLAR, BIPOLAR, BIPOLAR
mahphalke	1:819ac9aa5667	147	};
mahphalke	1:819ac9aa5667	148
mahphalke	1:819ac9aa5667	149	/* Channel range */
mahphalke	1:819ac9aa5667	150	typedef enum {
mahphalke	1:819ac9aa5667	151	LOW,
mahphalke	1:819ac9aa5667	152	HIGH
mahphalke	1:819ac9aa5667	153	} range_e;
mahphalke	1:819ac9aa5667	154
mahphalke	1:819ac9aa5667	155	/* Open detect auto mode QUEUE register count */
mahphalke	1:819ac9aa5667	156	static uint8_t open_detect_queue_cnts[AD7606X_ADC_CHANNELS] = {
mahphalke	1:819ac9aa5667	157	0
mahphalke	1:819ac9aa5667	158	};
mahphalke	1:819ac9aa5667	159
mahphalke	1:819ac9aa5667	160	/* ADC gain calibration Rfilter value (in Kohms) */
mahphalke	1:819ac9aa5667	161	static uint8_t gain_calibration_reg_val[AD7606X_ADC_CHANNELS] = {
mahphalke	1:819ac9aa5667	162	0
mahphalke	1:819ac9aa5667	163	};
mahphalke	1:819ac9aa5667	164
mahphalke	1:819ac9aa5667	165	/* Device register value */
mahphalke	1:819ac9aa5667	166	static uint8_t device_reg_val;
mahphalke	1:819ac9aa5667	167
mahphalke	1:819ac9aa5667	168	/* GPIO LED descriptor and init structure */
mahphalke	1:819ac9aa5667	169	static struct gpio_desc *gpio_led;
mahphalke	1:819ac9aa5667	170
mahphalke	1:819ac9aa5667	171	/* Flag to trigger new background conversion and capture when READBUFF command is issued */
mahphalke	1:819ac9aa5667	172	static bool adc_background_data_capture_started = false;
mahphalke	1:819ac9aa5667	173
mahphalke	1:819ac9aa5667	174	/******************************************************************************/
mahphalke	1:819ac9aa5667	175	/********************** Functions Prototypes ******************************/
mahphalke	1:819ac9aa5667	176	/******************************************************************************/
mahphalke	1:819ac9aa5667	177
mahphalke	1:819ac9aa5667	178	static float get_vltg_conv_scale_factor(float chn_range, polarity_e polarity);
mahphalke	1:819ac9aa5667	179	static void save_local_attributes(void);
mahphalke	1:819ac9aa5667	180
mahphalke	1:819ac9aa5667	181	/******************************************************************************/
mahphalke	1:819ac9aa5667	182	/********************** Functions Definitions *****************************/
mahphalke	1:819ac9aa5667	183	/******************************************************************************/
mahphalke	1:819ac9aa5667	184
mahphalke	1:819ac9aa5667	185	/*!
mahphalke	1:819ac9aa5667	186	* @brief Getter/Setter for the scale attribute value
mahphalke	1:819ac9aa5667	187	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	188	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	189	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	190	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	191	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	192	*/
mahphalke	1:819ac9aa5667	193	ssize_t get_chn_scale(void *device,
mahphalke	1:819ac9aa5667	194	char *buf,
mahphalke	1:819ac9aa5667	195	size_t len,
mahphalke	1:819ac9aa5667	196	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	197	{
mahphalke	1:819ac9aa5667	198	return (ssize_t) sprintf(buf, "%f", attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	199	}
mahphalke	1:819ac9aa5667	200
mahphalke	1:819ac9aa5667	201	ssize_t set_chn_scale(void *device,
mahphalke	1:819ac9aa5667	202	char *buf,
mahphalke	1:819ac9aa5667	203	size_t len,
mahphalke	1:819ac9aa5667	204	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	205	{
mahphalke	1:819ac9aa5667	206	float scale;
mahphalke	1:819ac9aa5667	207
mahphalke	1:819ac9aa5667	208	(void)sscanf(buf, "%f", &scale);
mahphalke	1:819ac9aa5667	209
mahphalke	1:819ac9aa5667	210	if (scale > 0.0) {
mahphalke	1:819ac9aa5667	211	attr_scale_val[channel->ch_num - 1] = scale;
mahphalke	1:819ac9aa5667	212	return len;
mahphalke	1:819ac9aa5667	213	}
mahphalke	1:819ac9aa5667	214
mahphalke	1:819ac9aa5667	215	return -EINVAL;
mahphalke	1:819ac9aa5667	216	}
mahphalke	1:819ac9aa5667	217
mahphalke	1:819ac9aa5667	218
mahphalke	1:819ac9aa5667	219	/*!
mahphalke	1:819ac9aa5667	220	* @brief Getter/Setter for the raw attribute value
mahphalke	1:819ac9aa5667	221	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	222	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	223	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	224	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	225	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	226	*/
mahphalke	1:819ac9aa5667	227	ssize_t get_chn_raw(void *device,
mahphalke	1:819ac9aa5667	228	char *buf,
mahphalke	1:819ac9aa5667	229	size_t len,
mahphalke	1:819ac9aa5667	230	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	231	{
mahphalke	1:819ac9aa5667	232	int32_t adc_data_raw;
mahphalke	1:819ac9aa5667	233
mahphalke	1:819ac9aa5667	234	/* Capture the raw adc data */
mahphalke	1:819ac9aa5667	235	adc_data_raw = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	236	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	237
mahphalke	1:819ac9aa5667	238	return (ssize_t) sprintf(buf, "%d", adc_data_raw);
mahphalke	1:819ac9aa5667	239	}
mahphalke	1:819ac9aa5667	240
mahphalke	1:819ac9aa5667	241	ssize_t set_chn_raw(void *device,
mahphalke	1:819ac9aa5667	242	char *buf,
mahphalke	1:819ac9aa5667	243	size_t len,
mahphalke	1:819ac9aa5667	244	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	245	{
mahphalke	1:819ac9aa5667	246	/* NA- Can't set raw value */
mahphalke	1:819ac9aa5667	247	return len;
mahphalke	1:819ac9aa5667	248	}
mahphalke	1:819ac9aa5667	249
mahphalke	1:819ac9aa5667	250
mahphalke	1:819ac9aa5667	251	/*!
mahphalke	1:819ac9aa5667	252	* @brief Getter/Setter for the operating mode attribute value
mahphalke	1:819ac9aa5667	253	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	254	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	255	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	256	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	257	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	258	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	259	*/
mahphalke	1:819ac9aa5667	260	ssize_t get_operating_mode(void *device,
mahphalke	1:819ac9aa5667	261	char *buf,
mahphalke	1:819ac9aa5667	262	size_t len,
mahphalke	1:819ac9aa5667	263	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	264	{
mahphalke	1:819ac9aa5667	265	uint8_t read_val;
mahphalke	1:819ac9aa5667	266	uint8_t operating_mode_value;
mahphalke	1:819ac9aa5667	267
mahphalke	1:819ac9aa5667	268	if (ad7606_spi_reg_read(device, AD7606_REG_CONFIG, &read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	269	operating_mode_value = (read_val & AD7606_CONFIG_OPERATION_MODE_MSK);
mahphalke	1:819ac9aa5667	270
mahphalke	1:819ac9aa5667	271	if (operating_mode_value < sizeof(operating_mode_str) / sizeof(
mahphalke	1:819ac9aa5667	272	operating_mode_str[0])) {
mahphalke	1:819ac9aa5667	273	return (ssize_t)sprintf(buf, "%s", operating_mode_str[operating_mode_value]);
mahphalke	1:819ac9aa5667	274	}
mahphalke	1:819ac9aa5667	275	}
mahphalke	1:819ac9aa5667	276
mahphalke	1:819ac9aa5667	277	return -EINVAL;
mahphalke	1:819ac9aa5667	278	}
mahphalke	1:819ac9aa5667	279
mahphalke	1:819ac9aa5667	280	ssize_t set_operating_mode(void *device,
mahphalke	1:819ac9aa5667	281	char *buf,
mahphalke	1:819ac9aa5667	282	size_t len,
mahphalke	1:819ac9aa5667	283	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	284	{
mahphalke	1:819ac9aa5667	285	uint8_t operating_mode_value;
mahphalke	1:819ac9aa5667	286
mahphalke	1:819ac9aa5667	287	(void)sscanf(buf, "%d", &operating_mode_value);
mahphalke	1:819ac9aa5667	288
mahphalke	1:819ac9aa5667	289	if (operating_mode_value < sizeof(operating_mode_str) / sizeof(
mahphalke	1:819ac9aa5667	290	operating_mode_str[0])) {
mahphalke	1:819ac9aa5667	291	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	292	AD7606_REG_CONFIG,
mahphalke	1:819ac9aa5667	293	AD7606_CONFIG_OPERATION_MODE_MSK,
mahphalke	1:819ac9aa5667	294	operating_mode_value) == SUCCESS) {
mahphalke	1:819ac9aa5667	295	return len;
mahphalke	1:819ac9aa5667	296	}
mahphalke	1:819ac9aa5667	297	}
mahphalke	1:819ac9aa5667	298
mahphalke	1:819ac9aa5667	299	return -EINVAL;
mahphalke	1:819ac9aa5667	300	}
mahphalke	1:819ac9aa5667	301
mahphalke	1:819ac9aa5667	302
mahphalke	1:819ac9aa5667	303	/*!
mahphalke	1:819ac9aa5667	304	* @brief Getter/Setter for the power down mode attribute value
mahphalke	1:819ac9aa5667	305	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	306	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	307	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	308	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	309	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	310	* @note Available for all devices except AD7606B and AD7606C
mahphalke	1:819ac9aa5667	311	*/
mahphalke	1:819ac9aa5667	312	ssize_t get_power_down_mode(void *device,
mahphalke	1:819ac9aa5667	313	char *buf,
mahphalke	1:819ac9aa5667	314	size_t len,
mahphalke	1:819ac9aa5667	315	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	316	{
mahphalke	1:819ac9aa5667	317	uint8_t gpio_stby_val;
mahphalke	1:819ac9aa5667	318	uint8_t gpio_range_val;
mahphalke	1:819ac9aa5667	319
mahphalke	1:819ac9aa5667	320	if (gpio_get_value(((struct ad7606_dev *)device)->gpio_stby_n,
mahphalke	1:819ac9aa5667	321	&gpio_stby_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	322	if (gpio_get_value(((struct ad7606_dev *)device)->gpio_range,
mahphalke	1:819ac9aa5667	323	&gpio_range_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	324
mahphalke	1:819ac9aa5667	325	if (gpio_stby_val) {
mahphalke	1:819ac9aa5667	326	return sprintf(buf, "%s", operating_mode_str[AD7606_NORMAL]);
mahphalke	1:819ac9aa5667	327	} else {
mahphalke	1:819ac9aa5667	328	if (gpio_range_val) {
mahphalke	1:819ac9aa5667	329	return sprintf(buf, "%s", operating_mode_str[AD7606_STANDBY]);
mahphalke	1:819ac9aa5667	330	} else {
mahphalke	1:819ac9aa5667	331	return sprintf(buf, "%s", operating_mode_str[AD7606_SHUTDOWN]);
mahphalke	1:819ac9aa5667	332	}
mahphalke	1:819ac9aa5667	333	}
mahphalke	1:819ac9aa5667	334	}
mahphalke	1:819ac9aa5667	335	}
mahphalke	1:819ac9aa5667	336
mahphalke	1:819ac9aa5667	337	return -EINVAL;
mahphalke	1:819ac9aa5667	338	}
mahphalke	1:819ac9aa5667	339
mahphalke	1:819ac9aa5667	340	ssize_t set_power_down_mode(void *device,
mahphalke	1:819ac9aa5667	341	char *buf,
mahphalke	1:819ac9aa5667	342	size_t len,
mahphalke	1:819ac9aa5667	343	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	344	{
mahphalke	1:819ac9aa5667	345	uint8_t power_down_mode_value;
mahphalke	1:819ac9aa5667	346	static enum ad7606_op_mode prev_power_down_mode = AD7606_NORMAL;
mahphalke	1:819ac9aa5667	347	struct ad7606_config dev_config;
mahphalke	1:819ac9aa5667	348
mahphalke	1:819ac9aa5667	349	sscanf(buf, "%d", &power_down_mode_value);
mahphalke	1:819ac9aa5667	350
mahphalke	1:819ac9aa5667	351	if (power_down_mode_value < (sizeof(operating_mode_str) / sizeof(
mahphalke	1:819ac9aa5667	352	operating_mode_str[0]))) {
mahphalke	1:819ac9aa5667	353
mahphalke	1:819ac9aa5667	354	dev_config.op_mode = power_down_mode_value;
mahphalke	1:819ac9aa5667	355
mahphalke	1:819ac9aa5667	356	switch (power_down_mode_value) {
mahphalke	1:819ac9aa5667	357	case AD7606_NORMAL:
mahphalke	1:819ac9aa5667	358	if (ad7606_set_config(device, dev_config) == SUCCESS) {
mahphalke	1:819ac9aa5667	359	/* Reset the device if previous power down mode was either standby
mahphalke	1:819ac9aa5667	360	* or shutdown */
mahphalke	1:819ac9aa5667	361	if (prev_power_down_mode != AD7606_NORMAL) {
mahphalke	1:819ac9aa5667	362
mahphalke	1:819ac9aa5667	363	/* Power-up wait time */
mahphalke	1:819ac9aa5667	364	mdelay(1);
mahphalke	1:819ac9aa5667	365
mahphalke	1:819ac9aa5667	366	/* Toggle reset pin */
mahphalke	1:819ac9aa5667	367	if (gpio_set_value(((struct ad7606_dev *)device)->gpio_reset,
mahphalke	1:819ac9aa5667	368	GPIO_HIGH) == SUCCESS) {
mahphalke	1:819ac9aa5667	369	mdelay(1);
mahphalke	1:819ac9aa5667	370
mahphalke	1:819ac9aa5667	371	if (gpio_set_value(((struct ad7606_dev *)device)->gpio_reset,
mahphalke	1:819ac9aa5667	372	GPIO_LOW) == SUCCESS) {
mahphalke	1:819ac9aa5667	373	prev_power_down_mode = AD7606_NORMAL;
mahphalke	1:819ac9aa5667	374	return len;
mahphalke	1:819ac9aa5667	375	}
mahphalke	1:819ac9aa5667	376	}
mahphalke	1:819ac9aa5667	377	}
mahphalke	1:819ac9aa5667	378	}
mahphalke	1:819ac9aa5667	379	break;
mahphalke	1:819ac9aa5667	380
mahphalke	1:819ac9aa5667	381	case AD7606_STANDBY:
mahphalke	1:819ac9aa5667	382	if (ad7606_set_config(device, dev_config) == SUCCESS) {
mahphalke	1:819ac9aa5667	383	prev_power_down_mode = AD7606_STANDBY;
mahphalke	1:819ac9aa5667	384	return len;
mahphalke	1:819ac9aa5667	385	}
mahphalke	1:819ac9aa5667	386	break;
mahphalke	1:819ac9aa5667	387
mahphalke	1:819ac9aa5667	388	case AD7606_SHUTDOWN:
mahphalke	1:819ac9aa5667	389	if (ad7606_set_config(device, dev_config) == SUCCESS) {
mahphalke	1:819ac9aa5667	390	prev_power_down_mode = AD7606_SHUTDOWN;
mahphalke	1:819ac9aa5667	391	return len;
mahphalke	1:819ac9aa5667	392	}
mahphalke	1:819ac9aa5667	393	break;
mahphalke	1:819ac9aa5667	394
mahphalke	1:819ac9aa5667	395	default:
mahphalke	1:819ac9aa5667	396	break;
mahphalke	1:819ac9aa5667	397	}
mahphalke	1:819ac9aa5667	398	}
mahphalke	1:819ac9aa5667	399
mahphalke	1:819ac9aa5667	400	return -EINVAL;
mahphalke	1:819ac9aa5667	401	}
mahphalke	1:819ac9aa5667	402
mahphalke	1:819ac9aa5667	403
mahphalke	1:819ac9aa5667	404	/*!
mahphalke	1:819ac9aa5667	405	* @brief Getter/Setter for the range attribute value
mahphalke	1:819ac9aa5667	406	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	407	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	408	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	409	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	410	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	411	* @note Available for all devices except AD7606B and AD7606C
mahphalke	1:819ac9aa5667	412	*/
mahphalke	1:819ac9aa5667	413	ssize_t get_range(void *device,
mahphalke	1:819ac9aa5667	414	char *buf,
mahphalke	1:819ac9aa5667	415	size_t len,
mahphalke	1:819ac9aa5667	416	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	417	{
mahphalke	1:819ac9aa5667	418	uint8_t gpio_range_val;
mahphalke	1:819ac9aa5667	419	struct ad7606_dev *dev = device;
mahphalke	1:819ac9aa5667	420
mahphalke	1:819ac9aa5667	421	if (gpio_get_value(dev->gpio_range, &gpio_range_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	422	if (gpio_range_val) {
mahphalke	1:819ac9aa5667	423	return sprintf(buf, "%s", chn_range_str[HIGH]);
mahphalke	1:819ac9aa5667	424	} else {
mahphalke	1:819ac9aa5667	425	return sprintf(buf, "%s", chn_range_str[LOW]);
mahphalke	1:819ac9aa5667	426	}
mahphalke	1:819ac9aa5667	427	}
mahphalke	1:819ac9aa5667	428
mahphalke	1:819ac9aa5667	429	return -EINVAL;
mahphalke	1:819ac9aa5667	430	}
mahphalke	1:819ac9aa5667	431
mahphalke	1:819ac9aa5667	432	ssize_t set_range(void *device,
mahphalke	1:819ac9aa5667	433	char *buf,
mahphalke	1:819ac9aa5667	434	size_t len,
mahphalke	1:819ac9aa5667	435	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	436	{
mahphalke	1:819ac9aa5667	437	uint8_t range_value;
mahphalke	1:819ac9aa5667	438	struct ad7606_dev *dev = device;
mahphalke	1:819ac9aa5667	439
mahphalke	1:819ac9aa5667	440	(void)sscanf(buf, "%d", &range_value);
mahphalke	1:819ac9aa5667	441
mahphalke	1:819ac9aa5667	442	if (range_value < (sizeof(chn_range_str) / sizeof(chn_range_str[0]))) {
mahphalke	1:819ac9aa5667	443	if (range_value == LOW) {
mahphalke	1:819ac9aa5667	444	if (gpio_set_value(dev->gpio_range, GPIO_LOW) == SUCCESS) {
mahphalke	1:819ac9aa5667	445	return len;
mahphalke	1:819ac9aa5667	446	}
mahphalke	1:819ac9aa5667	447	} else {
mahphalke	1:819ac9aa5667	448	if (gpio_set_value(dev->gpio_range, GPIO_HIGH) == SUCCESS) {
mahphalke	1:819ac9aa5667	449	return len;
mahphalke	1:819ac9aa5667	450	}
mahphalke	1:819ac9aa5667	451	}
mahphalke	1:819ac9aa5667	452	}
mahphalke	1:819ac9aa5667	453
mahphalke	1:819ac9aa5667	454	return -EINVAL;
mahphalke	1:819ac9aa5667	455	}
mahphalke	1:819ac9aa5667	456
mahphalke	1:819ac9aa5667	457
mahphalke	1:819ac9aa5667	458	/*!
mahphalke	1:819ac9aa5667	459	* @brief Getter/Setter for the oversampling attribute value
mahphalke	1:819ac9aa5667	460	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	461	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	462	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	463	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	464	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	465	* @note Available for all devices except AD7606B and AD7606C
mahphalke	1:819ac9aa5667	466	*/
mahphalke	1:819ac9aa5667	467	ssize_t get_oversampling(void *device,
mahphalke	1:819ac9aa5667	468	char *buf,
mahphalke	1:819ac9aa5667	469	size_t len,
mahphalke	1:819ac9aa5667	470	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	471	{
mahphalke	1:819ac9aa5667	472	uint8_t oversampling_value;
mahphalke	1:819ac9aa5667	473	uint8_t read_val;
mahphalke	1:819ac9aa5667	474	uint8_t gpio_osr0_val;
mahphalke	1:819ac9aa5667	475	uint8_t gpio_osr1_val;
mahphalke	1:819ac9aa5667	476	uint8_t gpio_osr2_val;
mahphalke	1:819ac9aa5667	477	struct ad7606_dev *dev = device;
mahphalke	1:819ac9aa5667	478
mahphalke	1:819ac9aa5667	479	#if defined(DEV_AD7606B) \|\| defined(DEV_AD7606C_18) \|\| defined(DEV_AD7606C_16)
mahphalke	1:819ac9aa5667	480	if (ad7606_spi_reg_read(device,
mahphalke	1:819ac9aa5667	481	AD7606_REG_OVERSAMPLING,
mahphalke	1:819ac9aa5667	482	&read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	483	oversampling_value = (read_val & AD7606_OVERSAMPLING_MSK);
mahphalke	1:819ac9aa5667	484
mahphalke	1:819ac9aa5667	485	if (oversampling_value < sizeof(oversampling_val_str) / sizeof(
mahphalke	1:819ac9aa5667	486	oversampling_val_str[0])) {
mahphalke	1:819ac9aa5667	487	return (ssize_t)sprintf(buf, "%s", oversampling_val_str[oversampling_value]);
mahphalke	1:819ac9aa5667	488	}
mahphalke	1:819ac9aa5667	489	}
mahphalke	1:819ac9aa5667	490	#else
mahphalke	1:819ac9aa5667	491	if (gpio_get_value(dev->gpio_os0, &gpio_osr0_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	492	if (gpio_get_value(dev->gpio_os1, &gpio_osr1_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	493	if (gpio_get_value(dev->gpio_os2, &gpio_osr2_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	494	oversampling_value = (gpio_osr2_val << 2) \| (gpio_osr1_val << 1) \|
mahphalke	1:819ac9aa5667	495	gpio_osr0_val;
mahphalke	1:819ac9aa5667	496
mahphalke	1:819ac9aa5667	497	if (oversampling_value < (sizeof(oversampling_val_str) / sizeof(
mahphalke	1:819ac9aa5667	498	oversampling_val_str[0]))) {
mahphalke	1:819ac9aa5667	499	return sprintf(buf, "%s", oversampling_val_str[oversampling_value]);
mahphalke	1:819ac9aa5667	500	}
mahphalke	1:819ac9aa5667	501	}
mahphalke	1:819ac9aa5667	502	}
mahphalke	1:819ac9aa5667	503	}
mahphalke	1:819ac9aa5667	504	#endif
mahphalke	1:819ac9aa5667	505
mahphalke	1:819ac9aa5667	506	return -EINVAL;
mahphalke	1:819ac9aa5667	507	}
mahphalke	1:819ac9aa5667	508
mahphalke	1:819ac9aa5667	509	ssize_t set_oversampling(void *device,
mahphalke	1:819ac9aa5667	510	char *buf,
mahphalke	1:819ac9aa5667	511	size_t len,
mahphalke	1:819ac9aa5667	512	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	513	{
mahphalke	1:819ac9aa5667	514	uint8_t oversampling_value;
mahphalke	1:819ac9aa5667	515	struct ad7606_oversampling oversampling_cfg;
mahphalke	1:819ac9aa5667	516
mahphalke	1:819ac9aa5667	517	(void)sscanf(buf, "%d", &oversampling_value);
mahphalke	1:819ac9aa5667	518
mahphalke	1:819ac9aa5667	519	if (oversampling_value < (sizeof(oversampling_val_str) / sizeof(
mahphalke	1:819ac9aa5667	520	oversampling_val_str[0]))) {
mahphalke	1:819ac9aa5667	521
mahphalke	1:819ac9aa5667	522	oversampling_cfg.os_pad = 0;
mahphalke	1:819ac9aa5667	523	oversampling_cfg.os_ratio = oversampling_value;
mahphalke	1:819ac9aa5667	524
mahphalke	1:819ac9aa5667	525	ad7606_set_oversampling(device, oversampling_cfg);
mahphalke	1:819ac9aa5667	526
mahphalke	1:819ac9aa5667	527	return len;
mahphalke	1:819ac9aa5667	528	}
mahphalke	1:819ac9aa5667	529
mahphalke	1:819ac9aa5667	530	return -EINVAL;
mahphalke	1:819ac9aa5667	531	}
mahphalke	1:819ac9aa5667	532
mahphalke	1:819ac9aa5667	533
mahphalke	1:819ac9aa5667	534	/*!
mahphalke	1:819ac9aa5667	535	* @brief Getter/Setter for the bandwidth attribute value
mahphalke	1:819ac9aa5667	536	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	537	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	538	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	539	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	540	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	541	* @note Available for only AD7606C
mahphalke	1:819ac9aa5667	542	*/
mahphalke	1:819ac9aa5667	543	ssize_t get_bandwidth(void *device,
mahphalke	1:819ac9aa5667	544	char *buf,
mahphalke	1:819ac9aa5667	545	size_t len,
mahphalke	1:819ac9aa5667	546	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	547	{
mahphalke	1:819ac9aa5667	548	uint8_t bw_value;
mahphalke	1:819ac9aa5667	549	uint8_t read_val;
mahphalke	1:819ac9aa5667	550
mahphalke	1:819ac9aa5667	551	if (ad7606_spi_reg_read(device,
mahphalke	1:819ac9aa5667	552	AD7606_REG_BANDWIDTH,
mahphalke	1:819ac9aa5667	553	&read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	554	bw_value = (read_val >> (channel->ch_num - 1)) & 0x1;
mahphalke	1:819ac9aa5667	555
mahphalke	1:819ac9aa5667	556	if (bw_value < sizeof(bandwidth_str) / sizeof(
mahphalke	1:819ac9aa5667	557	bandwidth_str[0])) {
mahphalke	1:819ac9aa5667	558	return (ssize_t)sprintf(buf, "%s", bandwidth_str[bw_value]);
mahphalke	1:819ac9aa5667	559	}
mahphalke	1:819ac9aa5667	560	}
mahphalke	1:819ac9aa5667	561
mahphalke	1:819ac9aa5667	562	return -EINVAL;
mahphalke	1:819ac9aa5667	563	}
mahphalke	1:819ac9aa5667	564
mahphalke	1:819ac9aa5667	565	ssize_t set_bandwidth(void *device,
mahphalke	1:819ac9aa5667	566	char *buf,
mahphalke	1:819ac9aa5667	567	size_t len,
mahphalke	1:819ac9aa5667	568	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	569	{
mahphalke	1:819ac9aa5667	570	uint8_t bw_value;
mahphalke	1:819ac9aa5667	571	uint8_t read_val;
mahphalke	1:819ac9aa5667	572
mahphalke	1:819ac9aa5667	573	(void)sscanf(buf, "%d", &bw_value);
mahphalke	1:819ac9aa5667	574
mahphalke	1:819ac9aa5667	575	if (bw_value < sizeof(bandwidth_str) / sizeof(
mahphalke	1:819ac9aa5667	576	bandwidth_str[0])) {
mahphalke	1:819ac9aa5667	577	if (ad7606_spi_reg_read(device,
mahphalke	1:819ac9aa5667	578	AD7606_REG_BANDWIDTH,
mahphalke	1:819ac9aa5667	579	&read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	580	if (bw_value) {
mahphalke	1:819ac9aa5667	581	read_val \|= (1 << (channel->ch_num - 1));
mahphalke	1:819ac9aa5667	582	} else {
mahphalke	1:819ac9aa5667	583	read_val &= (~(1 << (channel->ch_num - 1)));
mahphalke	1:819ac9aa5667	584	}
mahphalke	1:819ac9aa5667	585
mahphalke	1:819ac9aa5667	586	if (ad7606_spi_reg_write(device,
mahphalke	1:819ac9aa5667	587	AD7606_REG_BANDWIDTH,
mahphalke	1:819ac9aa5667	588	read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	589	return len;
mahphalke	1:819ac9aa5667	590	}
mahphalke	1:819ac9aa5667	591	}
mahphalke	1:819ac9aa5667	592	}
mahphalke	1:819ac9aa5667	593
mahphalke	1:819ac9aa5667	594	return -EINVAL;
mahphalke	1:819ac9aa5667	595	}
mahphalke	1:819ac9aa5667	596
mahphalke	1:819ac9aa5667	597
mahphalke	1:819ac9aa5667	598	/*!
mahphalke	1:819ac9aa5667	599	* @brief Getter/Setter for the channel range attribute value
mahphalke	1:819ac9aa5667	600	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	601	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	602	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	603	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	604	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	605	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	606	*/
mahphalke	1:819ac9aa5667	607	ssize_t get_chn_range(void *device,
mahphalke	1:819ac9aa5667	608	char *buf,
mahphalke	1:819ac9aa5667	609	size_t len,
mahphalke	1:819ac9aa5667	610	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	611	{
mahphalke	1:819ac9aa5667	612	uint8_t read_val;
mahphalke	1:819ac9aa5667	613	uint8_t chn_range;
mahphalke	1:819ac9aa5667	614
mahphalke	1:819ac9aa5667	615	if (ad7606_spi_reg_read(device, AD7606_REG_RANGE_CH_ADDR(channel->ch_num-1),
mahphalke	1:819ac9aa5667	616	&read_val) == SUCCESS) {
mahphalke	1:819ac9aa5667	617	if (((channel->ch_num - 1) % 2) != 0) {
mahphalke	1:819ac9aa5667	618	read_val >>= CHANNEL_RANGE_MSK_OFFSET;
mahphalke	1:819ac9aa5667	619	chn_range = read_val;
mahphalke	1:819ac9aa5667	620	} else {
mahphalke	1:819ac9aa5667	621	chn_range = (read_val & AD7606_RANGE_CH_MSK(channel->ch_num - 1));
mahphalke	1:819ac9aa5667	622	}
mahphalke	1:819ac9aa5667	623
mahphalke	1:819ac9aa5667	624	if (chn_range < sizeof(chn_range_str) / sizeof(chn_range_str[0])) {
mahphalke	1:819ac9aa5667	625	attr_chn_range[channel->ch_num - 1] = chn_range_val[chn_range];
mahphalke	1:819ac9aa5667	626	attr_polarity_val[channel->ch_num - 1] = ad7606_get_input_polarity(chn_range);
mahphalke	1:819ac9aa5667	627
mahphalke	1:819ac9aa5667	628	return (ssize_t)sprintf(buf, "%s", chn_range_str[chn_range]);
mahphalke	1:819ac9aa5667	629	}
mahphalke	1:819ac9aa5667	630	}
mahphalke	1:819ac9aa5667	631
mahphalke	1:819ac9aa5667	632	return -EINVAL;
mahphalke	1:819ac9aa5667	633	}
mahphalke	1:819ac9aa5667	634
mahphalke	1:819ac9aa5667	635	ssize_t set_chn_range(void *device,
mahphalke	1:819ac9aa5667	636	char *buf,
mahphalke	1:819ac9aa5667	637	size_t len,
mahphalke	1:819ac9aa5667	638	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	639	{
mahphalke	1:819ac9aa5667	640	uint8_t chn_range;
mahphalke	1:819ac9aa5667	641
mahphalke	1:819ac9aa5667	642	(void)sscanf(buf, "%d", &chn_range);
mahphalke	1:819ac9aa5667	643
mahphalke	1:819ac9aa5667	644	if (chn_range < sizeof(chn_range_val) / sizeof(chn_range_val[0])) {
mahphalke	1:819ac9aa5667	645
mahphalke	1:819ac9aa5667	646	/* Get the polarity of channel */
mahphalke	1:819ac9aa5667	647	attr_polarity_val[channel->ch_num - 1] = ad7606_get_input_polarity(chn_range);
mahphalke	1:819ac9aa5667	648
mahphalke	1:819ac9aa5667	649	attr_chn_range[channel->ch_num - 1] = chn_range_val[chn_range];
mahphalke	1:819ac9aa5667	650	attr_scale_val[channel->ch_num - 1] = get_vltg_conv_scale_factor(
mahphalke	1:819ac9aa5667	651	chn_range_val[chn_range],
mahphalke	1:819ac9aa5667	652	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	653
mahphalke	1:819ac9aa5667	654	if (((channel->ch_num - 1) % 2) != 0) {
mahphalke	1:819ac9aa5667	655	chn_range <<= CHANNEL_RANGE_MSK_OFFSET;
mahphalke	1:819ac9aa5667	656	}
mahphalke	1:819ac9aa5667	657
mahphalke	1:819ac9aa5667	658	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	659	AD7606_REG_RANGE_CH_ADDR(channel->ch_num-1),
mahphalke	1:819ac9aa5667	660	AD7606_RANGE_CH_MSK(channel->ch_num-1),
mahphalke	1:819ac9aa5667	661	chn_range) == SUCCESS) {
mahphalke	1:819ac9aa5667	662	return len;
mahphalke	1:819ac9aa5667	663	}
mahphalke	1:819ac9aa5667	664	}
mahphalke	1:819ac9aa5667	665
mahphalke	1:819ac9aa5667	666	return -EINVAL;
mahphalke	1:819ac9aa5667	667	}
mahphalke	1:819ac9aa5667	668
mahphalke	1:819ac9aa5667	669
mahphalke	1:819ac9aa5667	670	/*!
mahphalke	1:819ac9aa5667	671	* @brief Getter/Setter for the channel offset attribute value
mahphalke	1:819ac9aa5667	672	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	673	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	674	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	675	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	676	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	677	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	678	*/
mahphalke	1:819ac9aa5667	679	ssize_t get_chn_offset(void *device,
mahphalke	1:819ac9aa5667	680	char *buf,
mahphalke	1:819ac9aa5667	681	size_t len,
mahphalke	1:819ac9aa5667	682	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	683	{
mahphalke	1:819ac9aa5667	684	uint8_t chn_offset_value;
mahphalke	1:819ac9aa5667	685
mahphalke	1:819ac9aa5667	686	if (ad7606_spi_reg_read(device, AD7606_REG_OFFSET_CH(channel->ch_num-1),
mahphalke	1:819ac9aa5667	687	&chn_offset_value) == SUCCESS) {
mahphalke	1:819ac9aa5667	688	return (ssize_t)sprintf(buf, "%d", chn_offset_value);
mahphalke	1:819ac9aa5667	689	}
mahphalke	1:819ac9aa5667	690
mahphalke	1:819ac9aa5667	691	return -EINVAL;
mahphalke	1:819ac9aa5667	692	}
mahphalke	1:819ac9aa5667	693
mahphalke	1:819ac9aa5667	694	ssize_t set_chn_offset(void *device,
mahphalke	1:819ac9aa5667	695	char *buf,
mahphalke	1:819ac9aa5667	696	size_t len,
mahphalke	1:819ac9aa5667	697	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	698	{
mahphalke	1:819ac9aa5667	699	uint8_t chn_offset_value = 0;
mahphalke	1:819ac9aa5667	700
mahphalke	1:819ac9aa5667	701	(void)sscanf(buf, "%d", &chn_offset_value);
mahphalke	1:819ac9aa5667	702
mahphalke	1:819ac9aa5667	703	if (ad7606_set_ch_offset(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	704	chn_offset_value) == SUCCESS) {
mahphalke	1:819ac9aa5667	705	return len;
mahphalke	1:819ac9aa5667	706	}
mahphalke	1:819ac9aa5667	707
mahphalke	1:819ac9aa5667	708	return -EINVAL;
mahphalke	1:819ac9aa5667	709	}
mahphalke	1:819ac9aa5667	710
mahphalke	1:819ac9aa5667	711
mahphalke	1:819ac9aa5667	712	/*!
mahphalke	1:819ac9aa5667	713	* @brief Getter/Setter for the channel pahse offset attribute value
mahphalke	1:819ac9aa5667	714	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	715	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	716	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	717	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	718	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	719	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	720	*/
mahphalke	1:819ac9aa5667	721	ssize_t get_chn_phase_offset(void *device,
mahphalke	1:819ac9aa5667	722	char *buf,
mahphalke	1:819ac9aa5667	723	size_t len,
mahphalke	1:819ac9aa5667	724	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	725	{
mahphalke	1:819ac9aa5667	726	uint8_t chn_phase_offset_value;
mahphalke	1:819ac9aa5667	727
mahphalke	1:819ac9aa5667	728	if (ad7606_spi_reg_read(device,
mahphalke	1:819ac9aa5667	729	AD7606_REG_PHASE_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	730	&chn_phase_offset_value) == SUCCESS) {
mahphalke	1:819ac9aa5667	731	return (ssize_t)sprintf(buf, "%d", chn_phase_offset_value);
mahphalke	1:819ac9aa5667	732	}
mahphalke	1:819ac9aa5667	733
mahphalke	1:819ac9aa5667	734	return -EINVAL;
mahphalke	1:819ac9aa5667	735	}
mahphalke	1:819ac9aa5667	736
mahphalke	1:819ac9aa5667	737	ssize_t set_chn_phase_offset(void *device,
mahphalke	1:819ac9aa5667	738	char *buf,
mahphalke	1:819ac9aa5667	739	size_t len,
mahphalke	1:819ac9aa5667	740	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	741	{
mahphalke	1:819ac9aa5667	742	uint8_t chn_phase_offset_value = 0;
mahphalke	1:819ac9aa5667	743
mahphalke	1:819ac9aa5667	744	(void)sscanf(buf, "%d", &chn_phase_offset_value);
mahphalke	1:819ac9aa5667	745
mahphalke	1:819ac9aa5667	746	if (ad7606_set_ch_phase(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	747	chn_phase_offset_value) == SUCCESS) {
mahphalke	1:819ac9aa5667	748	return len;
mahphalke	1:819ac9aa5667	749	}
mahphalke	1:819ac9aa5667	750
mahphalke	1:819ac9aa5667	751	return -EINVAL;
mahphalke	1:819ac9aa5667	752	}
mahphalke	1:819ac9aa5667	753
mahphalke	1:819ac9aa5667	754
mahphalke	1:819ac9aa5667	755	/*!
mahphalke	1:819ac9aa5667	756	* @brief Getter/Setter for the channel temperature attribute value
mahphalke	1:819ac9aa5667	757	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	758	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	759	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	760	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	761	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	762	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	763	*/
mahphalke	1:819ac9aa5667	764	ssize_t get_chn_temperature(void *device,
mahphalke	1:819ac9aa5667	765	char *buf,
mahphalke	1:819ac9aa5667	766	size_t len,
mahphalke	1:819ac9aa5667	767	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	768	{
mahphalke	1:819ac9aa5667	769	int32_t adc_chn_data = 0;
mahphalke	1:819ac9aa5667	770	float temperature;
mahphalke	1:819ac9aa5667	771	float voltage;
mahphalke	1:819ac9aa5667	772
mahphalke	1:819ac9aa5667	773	/* Configure the channel multiplexer to select temperature read */
mahphalke	1:819ac9aa5667	774	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	775	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	776	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	777	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	778	TEMPERATURE_MUX)) == SUCCESS) {
mahphalke	1:819ac9aa5667	779
mahphalke	1:819ac9aa5667	780	/* Allow to settle Mux channel */
mahphalke	1:819ac9aa5667	781	udelay(100);
mahphalke	1:819ac9aa5667	782
mahphalke	1:819ac9aa5667	783	/* Sample the channel and read conversion result */
mahphalke	1:819ac9aa5667	784	adc_chn_data = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	785	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	786
mahphalke	1:819ac9aa5667	787	/* Convert ADC data into equivalent voltage */
mahphalke	1:819ac9aa5667	788	voltage = convert_adc_raw_to_voltage(adc_chn_data,
mahphalke	1:819ac9aa5667	789	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	790
mahphalke	1:819ac9aa5667	791	/* Obtain the temperature using equation specified in device datasheet */
mahphalke	1:819ac9aa5667	792	temperature = ((voltage - 0.69068) / 0.019328) + 25.0;
mahphalke	1:819ac9aa5667	793
mahphalke	1:819ac9aa5667	794	/* Change channel mux back to analog input */
mahphalke	1:819ac9aa5667	795	(void)ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	796	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	797	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	798	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	799	ANALOG_INPUT_MUX));
mahphalke	1:819ac9aa5667	800
mahphalke	1:819ac9aa5667	801	return (ssize_t)sprintf(buf, "%f", temperature);
mahphalke	1:819ac9aa5667	802	}
mahphalke	1:819ac9aa5667	803
mahphalke	1:819ac9aa5667	804	return -EINVAL;
mahphalke	1:819ac9aa5667	805	}
mahphalke	1:819ac9aa5667	806
mahphalke	1:819ac9aa5667	807	ssize_t set_chn_temperature(void *device,
mahphalke	1:819ac9aa5667	808	char *buf,
mahphalke	1:819ac9aa5667	809	size_t len,
mahphalke	1:819ac9aa5667	810	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	811	{
mahphalke	1:819ac9aa5667	812	// NA- Can't set temperature
mahphalke	1:819ac9aa5667	813	return -EINVAL;
mahphalke	1:819ac9aa5667	814	}
mahphalke	1:819ac9aa5667	815
mahphalke	1:819ac9aa5667	816
mahphalke	1:819ac9aa5667	817	/*!
mahphalke	1:819ac9aa5667	818	* @brief Getter/Setter for the channel Vref attribute value
mahphalke	1:819ac9aa5667	819	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	820	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	821	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	822	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	823	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	824	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	825	*/
mahphalke	1:819ac9aa5667	826	ssize_t get_chn_vref(void *device,
mahphalke	1:819ac9aa5667	827	char *buf,
mahphalke	1:819ac9aa5667	828	size_t len,
mahphalke	1:819ac9aa5667	829	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	830	{
mahphalke	1:819ac9aa5667	831	float vref_voltge;
mahphalke	1:819ac9aa5667	832	int32_t adc_chn_data;
mahphalke	1:819ac9aa5667	833
mahphalke	1:819ac9aa5667	834	/* Configure the channel multiplexer to select Vref read */
mahphalke	1:819ac9aa5667	835	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	836	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	837	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	838	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	839	VREF_MUX)) == SUCCESS) {
mahphalke	1:819ac9aa5667	840
mahphalke	1:819ac9aa5667	841	/* Allow to settle Mux channel */
mahphalke	1:819ac9aa5667	842	udelay(100);
mahphalke	1:819ac9aa5667	843
mahphalke	1:819ac9aa5667	844	/* Sample the channel and read conversion result */
mahphalke	1:819ac9aa5667	845	adc_chn_data = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	846	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	847
mahphalke	1:819ac9aa5667	848	/* Convert ADC data into equivalent voltage */
mahphalke	1:819ac9aa5667	849	vref_voltge = convert_adc_raw_to_voltage(adc_chn_data,
mahphalke	1:819ac9aa5667	850	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	851
mahphalke	1:819ac9aa5667	852	/* Divide by 4 since Vref Mux has 4x multiplier on it */
mahphalke	1:819ac9aa5667	853	vref_voltge /= VREF_MUX_MULTIPLIER;
mahphalke	1:819ac9aa5667	854
mahphalke	1:819ac9aa5667	855	/* Change channel mux back to analog input */
mahphalke	1:819ac9aa5667	856	(void)ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	857	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	858	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	859	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	860	ANALOG_INPUT_MUX));
mahphalke	1:819ac9aa5667	861
mahphalke	1:819ac9aa5667	862	return (ssize_t)sprintf(buf, "%f", vref_voltge);
mahphalke	1:819ac9aa5667	863	}
mahphalke	1:819ac9aa5667	864
mahphalke	1:819ac9aa5667	865	return -EINVAL;
mahphalke	1:819ac9aa5667	866	}
mahphalke	1:819ac9aa5667	867
mahphalke	1:819ac9aa5667	868	ssize_t set_chn_vref(void *device,
mahphalke	1:819ac9aa5667	869	char *buf,
mahphalke	1:819ac9aa5667	870	size_t len,
mahphalke	1:819ac9aa5667	871	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	872	{
mahphalke	1:819ac9aa5667	873	// NA- Can't set Vref
mahphalke	1:819ac9aa5667	874	return - EINVAL;
mahphalke	1:819ac9aa5667	875	}
mahphalke	1:819ac9aa5667	876
mahphalke	1:819ac9aa5667	877
mahphalke	1:819ac9aa5667	878	/*!
mahphalke	1:819ac9aa5667	879	* @brief Getter/Setter for the channel Vdrive attribute value
mahphalke	1:819ac9aa5667	880	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	881	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	882	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	883	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	884	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	885	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	886	*/
mahphalke	1:819ac9aa5667	887	ssize_t get_chn_vdrive(void *device,
mahphalke	1:819ac9aa5667	888	char *buf,
mahphalke	1:819ac9aa5667	889	size_t len,
mahphalke	1:819ac9aa5667	890	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	891	{
mahphalke	1:819ac9aa5667	892	float vdrive_voltge;
mahphalke	1:819ac9aa5667	893	int32_t adc_chn_data;
mahphalke	1:819ac9aa5667	894
mahphalke	1:819ac9aa5667	895	/* Configure the channel multiplexer to select Vdrive read */
mahphalke	1:819ac9aa5667	896	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	897	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	898	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	899	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	900	VDRIVE_MUX)) == SUCCESS) {
mahphalke	1:819ac9aa5667	901
mahphalke	1:819ac9aa5667	902	/* Allow to settle Mux channel */
mahphalke	1:819ac9aa5667	903	udelay(100);
mahphalke	1:819ac9aa5667	904
mahphalke	1:819ac9aa5667	905	/* Sample the channel and read conversion result */
mahphalke	1:819ac9aa5667	906	adc_chn_data = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	907	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	908
mahphalke	1:819ac9aa5667	909	/* Convert ADC data into equivalent voltage */
mahphalke	1:819ac9aa5667	910	vdrive_voltge = convert_adc_raw_to_voltage(adc_chn_data,
mahphalke	1:819ac9aa5667	911	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	912
mahphalke	1:819ac9aa5667	913	/* Change channel mux back to analog input */
mahphalke	1:819ac9aa5667	914	(void)ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	915	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	916	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	917	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	918	ANALOG_INPUT_MUX));
mahphalke	1:819ac9aa5667	919
mahphalke	1:819ac9aa5667	920	return (ssize_t)sprintf(buf, "%f", vdrive_voltge);
mahphalke	1:819ac9aa5667	921	}
mahphalke	1:819ac9aa5667	922
mahphalke	1:819ac9aa5667	923	return -EINVAL;
mahphalke	1:819ac9aa5667	924	}
mahphalke	1:819ac9aa5667	925
mahphalke	1:819ac9aa5667	926	ssize_t set_chn_vdrive(void *device,
mahphalke	1:819ac9aa5667	927	char *buf,
mahphalke	1:819ac9aa5667	928	size_t len,
mahphalke	1:819ac9aa5667	929	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	930	{
mahphalke	1:819ac9aa5667	931	// NA- Can't set Vdrive
mahphalke	1:819ac9aa5667	932	return - EINVAL;
mahphalke	1:819ac9aa5667	933	}
mahphalke	1:819ac9aa5667	934
mahphalke	1:819ac9aa5667	935
mahphalke	1:819ac9aa5667	936	/*!
mahphalke	1:819ac9aa5667	937	* @brief Getter/Setter for the channel ALDO attribute value
mahphalke	1:819ac9aa5667	938	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	939	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	940	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	941	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	942	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	943	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	944	*/
mahphalke	1:819ac9aa5667	945	ssize_t get_chn_aldo(void *device,
mahphalke	1:819ac9aa5667	946	char *buf,
mahphalke	1:819ac9aa5667	947	size_t len,
mahphalke	1:819ac9aa5667	948	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	949	{
mahphalke	1:819ac9aa5667	950	float aldo_voltge;
mahphalke	1:819ac9aa5667	951	int32_t adc_chn_data;
mahphalke	1:819ac9aa5667	952
mahphalke	1:819ac9aa5667	953	/* Configure the channel multiplexer to select ALDO read */
mahphalke	1:819ac9aa5667	954	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	955	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	956	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	957	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	958	ALDO_MUX)) == SUCCESS) {
mahphalke	1:819ac9aa5667	959
mahphalke	1:819ac9aa5667	960	/* Allow to settle Mux channel */
mahphalke	1:819ac9aa5667	961	udelay(100);
mahphalke	1:819ac9aa5667	962
mahphalke	1:819ac9aa5667	963	/* Sample the channel and read conversion result */
mahphalke	1:819ac9aa5667	964	adc_chn_data = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	965	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	966
mahphalke	1:819ac9aa5667	967	/* Convert ADC data into equivalent voltage */
mahphalke	1:819ac9aa5667	968	aldo_voltge = convert_adc_raw_to_voltage(adc_chn_data,
mahphalke	1:819ac9aa5667	969	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	970
mahphalke	1:819ac9aa5667	971	/* Divide by 4 since ALDO Mux has 4x multiplier on it */
mahphalke	1:819ac9aa5667	972	aldo_voltge /= VREF_MUX_MULTIPLIER;
mahphalke	1:819ac9aa5667	973
mahphalke	1:819ac9aa5667	974	/* Change channel mux back to analog input */
mahphalke	1:819ac9aa5667	975	(void)ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	976	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	977	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	978	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	979	ANALOG_INPUT_MUX));
mahphalke	1:819ac9aa5667	980
mahphalke	1:819ac9aa5667	981	return (ssize_t)sprintf(buf, "%f", aldo_voltge);
mahphalke	1:819ac9aa5667	982	}
mahphalke	1:819ac9aa5667	983
mahphalke	1:819ac9aa5667	984	return -EINVAL;
mahphalke	1:819ac9aa5667	985	}
mahphalke	1:819ac9aa5667	986
mahphalke	1:819ac9aa5667	987	ssize_t set_chn_aldo(void *device,
mahphalke	1:819ac9aa5667	988	char *buf,
mahphalke	1:819ac9aa5667	989	size_t len,
mahphalke	1:819ac9aa5667	990	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	991	{
mahphalke	1:819ac9aa5667	992	// NA- Can't set ALDO
mahphalke	1:819ac9aa5667	993	return - EINVAL;
mahphalke	1:819ac9aa5667	994	}
mahphalke	1:819ac9aa5667	995
mahphalke	1:819ac9aa5667	996
mahphalke	1:819ac9aa5667	997	/*!
mahphalke	1:819ac9aa5667	998	* @brief Getter/Setter for the channel DLDO attribute value
mahphalke	1:819ac9aa5667	999	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1000	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1001	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1002	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1003	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1004	* @note Available only for AD7606B and AD7606C
mahphalke	1:819ac9aa5667	1005	*/
mahphalke	1:819ac9aa5667	1006	ssize_t get_chn_dldo(void *device,
mahphalke	1:819ac9aa5667	1007	char *buf,
mahphalke	1:819ac9aa5667	1008	size_t len,
mahphalke	1:819ac9aa5667	1009	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1010	{
mahphalke	1:819ac9aa5667	1011	float dldo_voltge;
mahphalke	1:819ac9aa5667	1012	int32_t adc_chn_data;
mahphalke	1:819ac9aa5667	1013
mahphalke	1:819ac9aa5667	1014	/* Configure the channel multiplexer to select DLDO read */
mahphalke	1:819ac9aa5667	1015	if (ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	1016	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1017	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1018	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1019	DLDO_MUX)) == SUCCESS) {
mahphalke	1:819ac9aa5667	1020
mahphalke	1:819ac9aa5667	1021	/* Allow to settle Mux channel */
mahphalke	1:819ac9aa5667	1022	udelay(100);
mahphalke	1:819ac9aa5667	1023
mahphalke	1:819ac9aa5667	1024	/* Sample the channel and read conversion result */
mahphalke	1:819ac9aa5667	1025	adc_chn_data = single_data_read(device,
mahphalke	1:819ac9aa5667	1026	channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1027	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1028
mahphalke	1:819ac9aa5667	1029	/* Convert ADC data into equivalent voltage */
mahphalke	1:819ac9aa5667	1030	dldo_voltge = convert_adc_raw_to_voltage(adc_chn_data,
mahphalke	1:819ac9aa5667	1031	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1032
mahphalke	1:819ac9aa5667	1033	/* Divide by 4 since ALDO Mux has 4x multiplier on it */
mahphalke	1:819ac9aa5667	1034	dldo_voltge /= VREF_MUX_MULTIPLIER;
mahphalke	1:819ac9aa5667	1035
mahphalke	1:819ac9aa5667	1036	/* Change channel mux back to analog input */
mahphalke	1:819ac9aa5667	1037	(void)ad7606_spi_write_mask(device,
mahphalke	1:819ac9aa5667	1038	AD7606_REG_DIAGNOSTIC_MUX_CH(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1039	AD7606_DIAGN_MUX_CH_MSK(channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1040	AD7606_DIAGN_MUX_CH_VAL((channel->ch_num - 1),
mahphalke	1:819ac9aa5667	1041	ANALOG_INPUT_MUX));
mahphalke	1:819ac9aa5667	1042
mahphalke	1:819ac9aa5667	1043	return (ssize_t)sprintf(buf, "%f", dldo_voltge);
mahphalke	1:819ac9aa5667	1044	}
mahphalke	1:819ac9aa5667	1045
mahphalke	1:819ac9aa5667	1046	return -EINVAL;
mahphalke	1:819ac9aa5667	1047	}
mahphalke	1:819ac9aa5667	1048
mahphalke	1:819ac9aa5667	1049	ssize_t set_chn_dldo(void *device,
mahphalke	1:819ac9aa5667	1050	char *buf,
mahphalke	1:819ac9aa5667	1051	size_t len,
mahphalke	1:819ac9aa5667	1052	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1053	{
mahphalke	1:819ac9aa5667	1054	// NA- Can't set DLDO
mahphalke	1:819ac9aa5667	1055	return - EINVAL;
mahphalke	1:819ac9aa5667	1056	}
mahphalke	1:819ac9aa5667	1057
mahphalke	1:819ac9aa5667	1058
mahphalke	1:819ac9aa5667	1059	/*!
mahphalke	1:819ac9aa5667	1060	* @brief Getter/Setter for the channel open wire detect manual attribute value
mahphalke	1:819ac9aa5667	1061	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1062	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1063	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1064	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1065	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1066	*/
mahphalke	1:819ac9aa5667	1067	ssize_t get_chn_open_wire_detect_manual(void *device,
mahphalke	1:819ac9aa5667	1068	char *buf,
mahphalke	1:819ac9aa5667	1069	size_t len,
mahphalke	1:819ac9aa5667	1070	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1071	{
mahphalke	1:819ac9aa5667	1072	static volatile int32_t data[2];
mahphalke	1:819ac9aa5667	1073	uint8_t open_detect_flag = false;
mahphalke	1:819ac9aa5667	1074	int32_t rw_status = FAILURE;
mahphalke	1:819ac9aa5667	1075
mahphalke	1:819ac9aa5667	1076	/* Read the ADC on selected channel (before open wire detection start) */
mahphalke	1:819ac9aa5667	1077	data[0] = single_data_read(device,
mahphalke	1:819ac9aa5667	1078	channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1079	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1080
mahphalke	1:819ac9aa5667	1081	/* Enter into manual open wire detect mode */
mahphalke	1:819ac9aa5667	1082	if (ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_QUEUE, 1) == SUCCESS) {
mahphalke	1:819ac9aa5667	1083	/* Set common mode high (enabling open wire detect on selected channel) */
mahphalke	1:819ac9aa5667	1084	if (ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_ENABLE,
mahphalke	1:819ac9aa5667	1085	(1 << ((channel->ch_num) - 1))) == SUCCESS) {
mahphalke	1:819ac9aa5667	1086	/* Read the ADC on selected chnnel (post open wire detection) */
mahphalke	1:819ac9aa5667	1087	data[1] = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1088	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1089
mahphalke	1:819ac9aa5667	1090	/* Check for up shift in common mode output voltage */
mahphalke	1:819ac9aa5667	1091	if ((data[1] - data[0]) > OPEN_DETECT_THRESHOLD_RPD50K) {
mahphalke	1:819ac9aa5667	1092	/* Set common mode low (disabling open wire detect on channels) */
mahphalke	1:819ac9aa5667	1093	if (ad7606_spi_reg_write(device,
mahphalke	1:819ac9aa5667	1094	AD7606_REG_OPEN_DETECT_ENABLE,
mahphalke	1:819ac9aa5667	1095	0) == SUCCESS) {
mahphalke	1:819ac9aa5667	1096
mahphalke	1:819ac9aa5667	1097	/* Let channel settle down */
mahphalke	1:819ac9aa5667	1098	mdelay(1);
mahphalke	1:819ac9aa5667	1099
mahphalke	1:819ac9aa5667	1100	/* Read the ADC output after open wire detection */
mahphalke	1:819ac9aa5667	1101	data[1] = single_data_read(device,
mahphalke	1:819ac9aa5667	1102	channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1103	attr_polarity_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1104
mahphalke	1:819ac9aa5667	1105	/* Check if code returns back to original (with some threshold) */
mahphalke	1:819ac9aa5667	1106	if (abs(data[1] - data[0]) <= OPEN_DETECT_THRESHOLD_RPD50K) {
mahphalke	1:819ac9aa5667	1107	open_detect_flag = true;
mahphalke	1:819ac9aa5667	1108	}
mahphalke	1:819ac9aa5667	1109	}
mahphalke	1:819ac9aa5667	1110	}
mahphalke	1:819ac9aa5667	1111
mahphalke	1:819ac9aa5667	1112	rw_status = SUCCESS;
mahphalke	1:819ac9aa5667	1113	}
mahphalke	1:819ac9aa5667	1114	}
mahphalke	1:819ac9aa5667	1115
mahphalke	1:819ac9aa5667	1116	/* Disable open detect mode */
mahphalke	1:819ac9aa5667	1117	(void)ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_QUEUE, 0);
mahphalke	1:819ac9aa5667	1118
mahphalke	1:819ac9aa5667	1119	if (rw_status == SUCCESS) {
mahphalke	1:819ac9aa5667	1120	if (open_detect_flag) {
mahphalke	1:819ac9aa5667	1121	strcpy(buf, "Open Wire Detected");
mahphalke	1:819ac9aa5667	1122	} else {
mahphalke	1:819ac9aa5667	1123	strcpy(buf, "Open Wire Not Detected");
mahphalke	1:819ac9aa5667	1124	}
mahphalke	1:819ac9aa5667	1125
mahphalke	1:819ac9aa5667	1126	return len;
mahphalke	1:819ac9aa5667	1127	}
mahphalke	1:819ac9aa5667	1128
mahphalke	1:819ac9aa5667	1129	return -EINVAL;
mahphalke	1:819ac9aa5667	1130	}
mahphalke	1:819ac9aa5667	1131
mahphalke	1:819ac9aa5667	1132	ssize_t set_chn_open_wire_detect_manual(void *device,
mahphalke	1:819ac9aa5667	1133	char *buf,
mahphalke	1:819ac9aa5667	1134	size_t len,
mahphalke	1:819ac9aa5667	1135	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1136	{
mahphalke	1:819ac9aa5667	1137	// NA- Can't set open wire detect
mahphalke	1:819ac9aa5667	1138	return - EINVAL;
mahphalke	1:819ac9aa5667	1139	}
mahphalke	1:819ac9aa5667	1140
mahphalke	1:819ac9aa5667	1141
mahphalke	1:819ac9aa5667	1142	/*!
mahphalke	1:819ac9aa5667	1143	* @brief Getter/Setter for the channel open wire detect auto attribute value
mahphalke	1:819ac9aa5667	1144	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1145	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1146	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1147	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1148	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1149	*/
mahphalke	1:819ac9aa5667	1150	ssize_t get_chn_open_wire_detect_auto(void *device,
mahphalke	1:819ac9aa5667	1151	char *buf,
mahphalke	1:819ac9aa5667	1152	size_t len,
mahphalke	1:819ac9aa5667	1153	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1154	{
mahphalke	1:819ac9aa5667	1155	uint8_t open_detect_flag = false;
mahphalke	1:819ac9aa5667	1156	int32_t rw_status = FAILURE;
mahphalke	1:819ac9aa5667	1157	uint8_t conv_cnts;
mahphalke	1:819ac9aa5667	1158
mahphalke	1:819ac9aa5667	1159	if (open_detect_queue_cnts[channel->ch_num-1] <= 1) {
mahphalke	1:819ac9aa5667	1160	strcpy(buf, "Err: OPEN_DETECT_QUEUE Invalid");
mahphalke	1:819ac9aa5667	1161	return len;
mahphalke	1:819ac9aa5667	1162	}
mahphalke	1:819ac9aa5667	1163
mahphalke	1:819ac9aa5667	1164	/* Enter into auto open detect mode */
mahphalke	1:819ac9aa5667	1165	if (ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_QUEUE,
mahphalke	1:819ac9aa5667	1166	open_detect_queue_cnts[channel->ch_num-1]) == SUCCESS) {
mahphalke	1:819ac9aa5667	1167	/* Enable open wire detection on selected channel */
mahphalke	1:819ac9aa5667	1168	if (ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_ENABLE,
mahphalke	1:819ac9aa5667	1169	(1 << ((channel->ch_num) - 1))) == SUCCESS) {
mahphalke	1:819ac9aa5667	1170	/* Monitor the open detect flag for max N (open detect queue count) conversions.
mahphalke	1:819ac9aa5667	1171	* Note: In ideal scenario, the open detect flash should be monitored continuously while
mahphalke	1:819ac9aa5667	1172	* background N conversions are in progress */
mahphalke	1:819ac9aa5667	1173	for (conv_cnts = 0; conv_cnts < open_detect_queue_cnts[channel->ch_num - 1];
mahphalke	1:819ac9aa5667	1174	conv_cnts++) {
mahphalke	1:819ac9aa5667	1175	if (ad7606_convst(device) == SUCCESS) {
mahphalke	1:819ac9aa5667	1176	udelay(100);
mahphalke	1:819ac9aa5667	1177
mahphalke	1:819ac9aa5667	1178	/* Monitor the open detect flag */
mahphalke	1:819ac9aa5667	1179	if (ad7606_spi_reg_read(device,
mahphalke	1:819ac9aa5667	1180	AD7606_REG_OPEN_DETECTED,
mahphalke	1:819ac9aa5667	1181	&open_detect_flag) == SUCCESS) {
mahphalke	1:819ac9aa5667	1182	open_detect_flag >>= (channel->ch_num - 1);
mahphalke	1:819ac9aa5667	1183	open_detect_flag &= 0x1;
mahphalke	1:819ac9aa5667	1184
mahphalke	1:819ac9aa5667	1185	rw_status = SUCCESS;
mahphalke	1:819ac9aa5667	1186	if (open_detect_flag) {
mahphalke	1:819ac9aa5667	1187	break;
mahphalke	1:819ac9aa5667	1188	}
mahphalke	1:819ac9aa5667	1189	} else {
mahphalke	1:819ac9aa5667	1190	rw_status = FAILURE;
mahphalke	1:819ac9aa5667	1191	break;
mahphalke	1:819ac9aa5667	1192	}
mahphalke	1:819ac9aa5667	1193	} else {
mahphalke	1:819ac9aa5667	1194	rw_status = FAILURE;
mahphalke	1:819ac9aa5667	1195	break;
mahphalke	1:819ac9aa5667	1196	}
mahphalke	1:819ac9aa5667	1197	}
mahphalke	1:819ac9aa5667	1198	}
mahphalke	1:819ac9aa5667	1199	}
mahphalke	1:819ac9aa5667	1200
mahphalke	1:819ac9aa5667	1201	/* Disable open detect mode */
mahphalke	1:819ac9aa5667	1202	(void)ad7606_spi_reg_write(device, AD7606_REG_OPEN_DETECT_QUEUE, 0);
mahphalke	1:819ac9aa5667	1203
mahphalke	1:819ac9aa5667	1204	if (rw_status == SUCCESS) {
mahphalke	1:819ac9aa5667	1205	if (open_detect_flag) {
mahphalke	1:819ac9aa5667	1206	strcpy(buf, "Open Wire Detected");
mahphalke	1:819ac9aa5667	1207	} else {
mahphalke	1:819ac9aa5667	1208	strcpy(buf, "Open Wire Not Detected");
mahphalke	1:819ac9aa5667	1209	}
mahphalke	1:819ac9aa5667	1210
mahphalke	1:819ac9aa5667	1211	return len;
mahphalke	1:819ac9aa5667	1212	}
mahphalke	1:819ac9aa5667	1213
mahphalke	1:819ac9aa5667	1214	return -EINVAL;
mahphalke	1:819ac9aa5667	1215	}
mahphalke	1:819ac9aa5667	1216
mahphalke	1:819ac9aa5667	1217	ssize_t set_chn_open_wire_detect_auto(void *device,
mahphalke	1:819ac9aa5667	1218	char *buf,
mahphalke	1:819ac9aa5667	1219	size_t len,
mahphalke	1:819ac9aa5667	1220	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1221	{
mahphalke	1:819ac9aa5667	1222	uint8_t data;
mahphalke	1:819ac9aa5667	1223
mahphalke	1:819ac9aa5667	1224	(void)sscanf(buf, "%d", &data);
mahphalke	1:819ac9aa5667	1225
mahphalke	1:819ac9aa5667	1226	if (data > 1) {
mahphalke	1:819ac9aa5667	1227	open_detect_queue_cnts[channel->ch_num - 1] = data;
mahphalke	1:819ac9aa5667	1228	return len;
mahphalke	1:819ac9aa5667	1229	}
mahphalke	1:819ac9aa5667	1230
mahphalke	1:819ac9aa5667	1231	return -EINVAL;
mahphalke	1:819ac9aa5667	1232	}
mahphalke	1:819ac9aa5667	1233
mahphalke	1:819ac9aa5667	1234
mahphalke	1:819ac9aa5667	1235	/*!
mahphalke	1:819ac9aa5667	1236	* @brief Getter/Setter for the adc offset calibration
mahphalke	1:819ac9aa5667	1237	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1238	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1239	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1240	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1241	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1242	*/
mahphalke	1:819ac9aa5667	1243	ssize_t get_chn_calibrate_adc_offset(void *device,
mahphalke	1:819ac9aa5667	1244	char *buf,
mahphalke	1:819ac9aa5667	1245	size_t len,
mahphalke	1:819ac9aa5667	1246	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1247	{
mahphalke	1:819ac9aa5667	1248	float lsb_voltage;
mahphalke	1:819ac9aa5667	1249	float adc_voltage;
mahphalke	1:819ac9aa5667	1250	polarity_e polarity = attr_polarity_val[channel->ch_num - 1];
mahphalke	1:819ac9aa5667	1251	int32_t adc_data;
mahphalke	1:819ac9aa5667	1252	int8_t chn_offset;
mahphalke	1:819ac9aa5667	1253
mahphalke	1:819ac9aa5667	1254	/* Perform the system offset calibration */
mahphalke	1:819ac9aa5667	1255
mahphalke	1:819ac9aa5667	1256	if (polarity == UNIPOLAR) {
mahphalke	1:819ac9aa5667	1257	lsb_voltage = attr_chn_range[channel->ch_num - 1] / ADC_MAX_COUNT_UNIPOLAR;
mahphalke	1:819ac9aa5667	1258	} else {
mahphalke	1:819ac9aa5667	1259	lsb_voltage = attr_chn_range[channel->ch_num - 1] / ADC_MAX_COUNT_BIPOLAR;
mahphalke	1:819ac9aa5667	1260	}
mahphalke	1:819ac9aa5667	1261
mahphalke	1:819ac9aa5667	1262	/* Sample and read the ADC channel */
mahphalke	1:819ac9aa5667	1263	adc_data = single_data_read(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1264	polarity);
mahphalke	1:819ac9aa5667	1265
mahphalke	1:819ac9aa5667	1266	/* Get an equivalent ADC voltage */
mahphalke	1:819ac9aa5667	1267	adc_voltage = convert_adc_raw_to_voltage(adc_data,
mahphalke	1:819ac9aa5667	1268	attr_scale_val[channel->ch_num - 1]);
mahphalke	1:819ac9aa5667	1269
mahphalke	1:819ac9aa5667	1270	/* Calculate the channel offset and write it to offset register */
mahphalke	1:819ac9aa5667	1271	chn_offset = -(adc_voltage / lsb_voltage);
mahphalke	1:819ac9aa5667	1272
mahphalke	1:819ac9aa5667	1273	if (ad7606_set_ch_offset(device, channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1274	chn_offset) == SUCCESS) {
mahphalke	1:819ac9aa5667	1275	return sprintf(buf, "%s", "ADC Calibration Done");
mahphalke	1:819ac9aa5667	1276	}
mahphalke	1:819ac9aa5667	1277
mahphalke	1:819ac9aa5667	1278	return -EINVAL;
mahphalke	1:819ac9aa5667	1279	}
mahphalke	1:819ac9aa5667	1280
mahphalke	1:819ac9aa5667	1281	ssize_t set_chn_calibrate_adc_offset(void *device,
mahphalke	1:819ac9aa5667	1282	char *buf,
mahphalke	1:819ac9aa5667	1283	size_t len,
mahphalke	1:819ac9aa5667	1284	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1285	{
mahphalke	1:819ac9aa5667	1286	// NA- Can't set open wire detect
mahphalke	1:819ac9aa5667	1287	return - EINVAL;
mahphalke	1:819ac9aa5667	1288	}
mahphalke	1:819ac9aa5667	1289
mahphalke	1:819ac9aa5667	1290
mahphalke	1:819ac9aa5667	1291	/*!
mahphalke	1:819ac9aa5667	1292	* @brief Getter/Setter for the adc gain calibration
mahphalke	1:819ac9aa5667	1293	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1294	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1295	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1296	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1297	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1298	*/
mahphalke	1:819ac9aa5667	1299	ssize_t get_chn_calibrate_adc_gain(void *device,
mahphalke	1:819ac9aa5667	1300	char *buf,
mahphalke	1:819ac9aa5667	1301	size_t len,
mahphalke	1:819ac9aa5667	1302	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1303	{
mahphalke	1:819ac9aa5667	1304	uint8_t chn_gain;
mahphalke	1:819ac9aa5667	1305
mahphalke	1:819ac9aa5667	1306	/* Perform the gain calibration */
mahphalke	1:819ac9aa5667	1307	chn_gain = gain_calibration_reg_val[channel->ch_num - 1];
mahphalke	1:819ac9aa5667	1308
mahphalke	1:819ac9aa5667	1309	if (ad7606_set_ch_gain(device,
mahphalke	1:819ac9aa5667	1310	channel->ch_num - 1,
mahphalke	1:819ac9aa5667	1311	chn_gain) == SUCCESS) {
mahphalke	1:819ac9aa5667	1312	return sprintf(buf, "Calibration Done (Rfilter=%d K)", chn_gain);
mahphalke	1:819ac9aa5667	1313	}
mahphalke	1:819ac9aa5667	1314
mahphalke	1:819ac9aa5667	1315	return -EINVAL;
mahphalke	1:819ac9aa5667	1316	}
mahphalke	1:819ac9aa5667	1317
mahphalke	1:819ac9aa5667	1318	ssize_t set_chn_calibrate_adc_gain(void *device,
mahphalke	1:819ac9aa5667	1319	char *buf,
mahphalke	1:819ac9aa5667	1320	size_t len,
mahphalke	1:819ac9aa5667	1321	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1322	{
mahphalke	1:819ac9aa5667	1323	float data;
mahphalke	1:819ac9aa5667	1324
mahphalke	1:819ac9aa5667	1325	(void)sscanf(buf, "%f", &data);
mahphalke	1:819ac9aa5667	1326
mahphalke	1:819ac9aa5667	1327	if (data < ADC_CALIBRATION_GAIN_MAX) {
mahphalke	1:819ac9aa5667	1328	/* Get the nearest value of unsigned integer */
mahphalke	1:819ac9aa5667	1329	gain_calibration_reg_val[channel->ch_num - 1] = (uint8_t)(round(data));
mahphalke	1:819ac9aa5667	1330	return len;
mahphalke	1:819ac9aa5667	1331	}
mahphalke	1:819ac9aa5667	1332
mahphalke	1:819ac9aa5667	1333	return -EINVAL;
mahphalke	1:819ac9aa5667	1334	}
mahphalke	1:819ac9aa5667	1335
mahphalke	1:819ac9aa5667	1336
mahphalke	1:819ac9aa5667	1337	/*!
mahphalke	1:819ac9aa5667	1338	* @brief Getter/Setter for the direct register access attribute value
mahphalke	1:819ac9aa5667	1339	* @param device- pointer to IIO device structure
mahphalke	1:819ac9aa5667	1340	* @param buf- pointer to buffer holding attribute value
mahphalke	1:819ac9aa5667	1341	* @param len- length of buffer string data
mahphalke	1:819ac9aa5667	1342	* @param channel- pointer to IIO channel structure
mahphalke	1:819ac9aa5667	1343	* @return Number of characters read/written
mahphalke	1:819ac9aa5667	1344	*/
mahphalke	1:819ac9aa5667	1345	ssize_t get_direct_reg_access(void *device,
mahphalke	1:819ac9aa5667	1346	char *buf,
mahphalke	1:819ac9aa5667	1347	size_t len,
mahphalke	1:819ac9aa5667	1348	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1349	{
mahphalke	1:819ac9aa5667	1350	return (ssize_t)sprintf(buf, "%d", device_reg_val);
mahphalke	1:819ac9aa5667	1351	}
mahphalke	1:819ac9aa5667	1352
mahphalke	1:819ac9aa5667	1353	ssize_t set_direct_reg_access(void *device,
mahphalke	1:819ac9aa5667	1354	char *buf,
mahphalke	1:819ac9aa5667	1355	size_t len,
mahphalke	1:819ac9aa5667	1356	const struct iio_ch_info *channel)
mahphalke	1:819ac9aa5667	1357	{
mahphalke	1:819ac9aa5667	1358	uint8_t reg_address;
mahphalke	1:819ac9aa5667	1359	char *token;
mahphalke	1:819ac9aa5667	1360	uint8_t offset = strlen("0x");
mahphalke	1:819ac9aa5667	1361	char str[10] = "";
mahphalke	1:819ac9aa5667	1362	uint8_t i=0;
mahphalke	1:819ac9aa5667	1363	uint8_t reg_data;
mahphalke	1:819ac9aa5667	1364
mahphalke	1:819ac9aa5667	1365	if (buf[1] == 'x') {
mahphalke	1:819ac9aa5667	1366	/* Write a data to device */
mahphalke	1:819ac9aa5667	1367
mahphalke	1:819ac9aa5667	1368	/* Extract the register address from received string */
mahphalke	1:819ac9aa5667	1369	strcpy(str, buf);
mahphalke	1:819ac9aa5667	1370	token = strtok(str, " ");
mahphalke	1:819ac9aa5667	1371	(void)sscanf(token + offset, "%x", &reg_address);
mahphalke	1:819ac9aa5667	1372
mahphalke	1:819ac9aa5667	1373	/* Extract the register data from received string */
mahphalke	1:819ac9aa5667	1374	i = (strlen(str) + 1) + offset;
mahphalke	1:819ac9aa5667	1375	(void)sscanf(str + i, "%x", &reg_data);
mahphalke	1:819ac9aa5667	1376
mahphalke	1:819ac9aa5667	1377	if (reg_address <= NUM_OF_REGISTERS) {
mahphalke	1:819ac9aa5667	1378	if ((ad7606_spi_reg_write(device, reg_address, reg_data) == SUCCESS)) {
mahphalke	1:819ac9aa5667	1379	save_local_attributes();
mahphalke	1:819ac9aa5667	1380	return len;
mahphalke	1:819ac9aa5667	1381	}
mahphalke	1:819ac9aa5667	1382	}
mahphalke	1:819ac9aa5667	1383	} else {
mahphalke	1:819ac9aa5667	1384	/* Read the data from device */
mahphalke	1:819ac9aa5667	1385	(void)sscanf(buf, "%d", &reg_address);
mahphalke	1:819ac9aa5667	1386	if ((ad7606_spi_reg_read(device, reg_address, &device_reg_val) == SUCCESS)) {
mahphalke	1:819ac9aa5667	1387	return len;
mahphalke	1:819ac9aa5667	1388	}
mahphalke	1:819ac9aa5667	1389	}
mahphalke	1:819ac9aa5667	1390
mahphalke	1:819ac9aa5667	1391	return -EINVAL;
mahphalke	1:819ac9aa5667	1392	}
mahphalke	1:819ac9aa5667	1393
mahphalke	1:819ac9aa5667	1394
mahphalke	1:819ac9aa5667	1395	/**
mahphalke	1:819ac9aa5667	1396	* @brief Get xml corresponding to an AD7606 device.
mahphalke	1:819ac9aa5667	1397	* @param xml - Xml containing description of a device.
mahphalke	1:819ac9aa5667	1398	* @param iio_dev - Structure describing a device, channels and attributes.
mahphalke	1:819ac9aa5667	1399	* @return SUCCESS in case of success or negative value otherwise.
mahphalke	1:819ac9aa5667	1400	*/
mahphalke	1:819ac9aa5667	1401	static ssize_t iio_ad7606_get_xml(char *xml, struct iio_device iio_dev)
mahphalke	1:819ac9aa5667	1402	{
mahphalke	1:819ac9aa5667	1403	xml = (char)calloc(1, strlen(ad7606_phy_xml) + 1);
mahphalke	1:819ac9aa5667	1404	if (!(*xml)) {
mahphalke	1:819ac9aa5667	1405	return -ENOMEM;
mahphalke	1:819ac9aa5667	1406	}
mahphalke	1:819ac9aa5667	1407
mahphalke	1:819ac9aa5667	1408	memcpy(*xml, ad7606_phy_xml, strlen(ad7606_phy_xml));
mahphalke	1:819ac9aa5667	1409
mahphalke	1:819ac9aa5667	1410	return SUCCESS;
mahphalke	1:819ac9aa5667	1411	}
mahphalke	1:819ac9aa5667	1412
mahphalke	1:819ac9aa5667	1413
mahphalke	1:819ac9aa5667	1414	/**
mahphalke	1:819ac9aa5667	1415	* @brief Read buffer data corresponding to AD7606 IIO device
mahphalke	1:819ac9aa5667	1416	* @param dev_instance[in] - IIO device instance
mahphalke	1:819ac9aa5667	1417	* @param pbuf[out] - Pointer to output data buffer
mahphalke	1:819ac9aa5667	1418	* @return SUCCESS in case of success or negative value otherwise
mahphalke	1:819ac9aa5667	1419	*/
mahphalke	1:819ac9aa5667	1420	static ssize_t iio_ad7606_read_data(void *dev_instance,
mahphalke	1:819ac9aa5667	1421	char *pbuf,
mahphalke	1:819ac9aa5667	1422	size_t offset,
mahphalke	1:819ac9aa5667	1423	size_t bytes_count,
mahphalke	1:819ac9aa5667	1424	uint32_t ch_mask)
mahphalke	1:819ac9aa5667	1425	{
mahphalke	1:819ac9aa5667	1426	if (adc_background_data_capture_started == false) {
mahphalke	1:819ac9aa5667	1427	start_background_data_capture(ch_mask, bytes_count);
mahphalke	1:819ac9aa5667	1428	adc_background_data_capture_started = true;
mahphalke	1:819ac9aa5667	1429	}
mahphalke	1:819ac9aa5667	1430
mahphalke	1:819ac9aa5667	1431	/* Read the buffered data */
mahphalke	1:819ac9aa5667	1432	return (ssize_t)buffered_data_read(pbuf, bytes_count, offset, ch_mask);
mahphalke	1:819ac9aa5667	1433	}
mahphalke	1:819ac9aa5667	1434
mahphalke	1:819ac9aa5667	1435
mahphalke	1:819ac9aa5667	1436	/**
mahphalke	1:819ac9aa5667	1437	* @brief Read requested samples count
mahphalke	1:819ac9aa5667	1438	* @param dev_instance[in] - IIO device instance
mahphalke	1:819ac9aa5667	1439	* @param pbuf[out] - Pointer to output data buffer
mahphalke	1:819ac9aa5667	1440	* @return SUCCESS in case of success or negative value otherwise
mahphalke	1:819ac9aa5667	1441	*/
mahphalke	1:819ac9aa5667	1442	static ssize_t iio_ad7606_get_samples_count(void *dev_instance,
mahphalke	1:819ac9aa5667	1443	size_t bytes_count,
mahphalke	1:819ac9aa5667	1444	uint32_t ch_mask)
mahphalke	1:819ac9aa5667	1445	{
mahphalke	1:819ac9aa5667	1446	store_requested_samples_count(bytes_count);
mahphalke	1:819ac9aa5667	1447	return SUCCESS;
mahphalke	1:819ac9aa5667	1448	}
mahphalke	1:819ac9aa5667	1449
mahphalke	1:819ac9aa5667	1450
mahphalke	1:819ac9aa5667	1451	/**
mahphalke	1:819ac9aa5667	1452	* @brief Create structure describing a device, channels and attributes
mahphalke	1:819ac9aa5667	1453	* @param device_name[in] - Device name
mahphalke	1:819ac9aa5667	1454	* @return iio_device or NULL, in case of failure
mahphalke	1:819ac9aa5667	1455	*/
mahphalke	1:819ac9aa5667	1456	static struct iio_device iio_ad7606_create_device(const char device_name)
mahphalke	1:819ac9aa5667	1457	{
mahphalke	1:819ac9aa5667	1458	struct iio_device *iio_ad7606_device;
mahphalke	1:819ac9aa5667	1459
mahphalke	1:819ac9aa5667	1460	iio_ad7606_device = calloc(1, sizeof(struct iio_device));
mahphalke	1:819ac9aa5667	1461	if (!iio_ad7606_device) {
mahphalke	1:819ac9aa5667	1462	return NULL;
mahphalke	1:819ac9aa5667	1463	}
mahphalke	1:819ac9aa5667	1464
mahphalke	1:819ac9aa5667	1465	iio_ad7606_device->name = device_name;
mahphalke	1:819ac9aa5667	1466	iio_ad7606_device->num_ch = sizeof(iio_ad7606_channels) / sizeof(
mahphalke	1:819ac9aa5667	1467	iio_ad7606_channels[0]);
mahphalke	1:819ac9aa5667	1468	iio_ad7606_device->channels = iio_ad7606_channels;
mahphalke	1:819ac9aa5667	1469	iio_ad7606_device->attributes = global_attributes;
mahphalke	1:819ac9aa5667	1470
mahphalke	1:819ac9aa5667	1471	return iio_ad7606_device;
mahphalke	1:819ac9aa5667	1472	}
mahphalke	1:819ac9aa5667	1473
mahphalke	1:819ac9aa5667	1474
mahphalke	1:819ac9aa5667	1475	/**
mahphalke	1:819ac9aa5667	1476	* @brief Delete IIO device.
mahphalke	1:819ac9aa5667	1477	* @param iio_device - Structure describing a device, channels and attributes
mahphalke	1:819ac9aa5667	1478	* @return SUCCESS in case of success or negative value otherwise
mahphalke	1:819ac9aa5667	1479	*/
mahphalke	1:819ac9aa5667	1480	static ssize_t iio_ad7606_delete_device(struct iio_device *iio_device)
mahphalke	1:819ac9aa5667	1481	{
mahphalke	1:819ac9aa5667	1482	if (!iio_device) {
mahphalke	1:819ac9aa5667	1483	return FAILURE;
mahphalke	1:819ac9aa5667	1484	}
mahphalke	1:819ac9aa5667	1485
mahphalke	1:819ac9aa5667	1486	free(iio_device);
mahphalke	1:819ac9aa5667	1487
mahphalke	1:819ac9aa5667	1488	return SUCCESS;
mahphalke	1:819ac9aa5667	1489	}
mahphalke	1:819ac9aa5667	1490
mahphalke	1:819ac9aa5667	1491
mahphalke	1:819ac9aa5667	1492	/**
mahphalke	1:819ac9aa5667	1493	* @brief Init for reading/writing and parameterization of a
mahphalke	1:819ac9aa5667	1494	* ad7606 IIO device
mahphalke	1:819ac9aa5667	1495	* @param desc[in,out] - IIO device descriptor
mahphalke	1:819ac9aa5667	1496	* @param init[in] - Configuration structure
mahphalke	1:819ac9aa5667	1497	* @return SUCCESS in case of success, FAILURE otherwise
mahphalke	1:819ac9aa5667	1498	*/
mahphalke	1:819ac9aa5667	1499	int32_t iio_ad7606_init(struct iio_ad7606_desc **desc,
mahphalke	1:819ac9aa5667	1500	struct iio_ad7606_init_param *init)
mahphalke	1:819ac9aa5667	1501	{
mahphalke	1:819ac9aa5667	1502	int32_t status;
mahphalke	1:819ac9aa5667	1503	struct iio_interface *iio_interface;
mahphalke	1:819ac9aa5667	1504
mahphalke	1:819ac9aa5667	1505	iio_interface = (struct iio_interface *)calloc(1, sizeof(struct iio_interface));
mahphalke	1:819ac9aa5667	1506	if (!iio_interface) {
mahphalke	1:819ac9aa5667	1507	return -ENOMEM;
mahphalke	1:819ac9aa5667	1508	}
mahphalke	1:819ac9aa5667	1509
mahphalke	1:819ac9aa5667	1510	*iio_interface = (struct iio_interface) {
mahphalke	1:819ac9aa5667	1511	.name = dev_name,
mahphalke	1:819ac9aa5667	1512	.dev_instance = init->ad7606_phy,
mahphalke	1:819ac9aa5667	1513	.iio = iio_ad7606_create_device(dev_name),
mahphalke	1:819ac9aa5667	1514	.get_xml = iio_ad7606_get_xml,
mahphalke	1:819ac9aa5667	1515	.transfer_dev_to_mem = iio_ad7606_get_samples_count,
mahphalke	1:819ac9aa5667	1516	.transfer_mem_to_dev = NULL,
mahphalke	1:819ac9aa5667	1517	.read_data = iio_ad7606_read_data,
mahphalke	1:819ac9aa5667	1518	.write_data = NULL,
mahphalke	1:819ac9aa5667	1519	};
mahphalke	1:819ac9aa5667	1520
mahphalke	1:819ac9aa5667	1521	status = iio_register(iio_interface);
mahphalke	1:819ac9aa5667	1522	if (status < 0) {
mahphalke	1:819ac9aa5667	1523	free(iio_interface);
mahphalke	1:819ac9aa5667	1524	return FAILURE;
mahphalke	1:819ac9aa5667	1525	}
mahphalke	1:819ac9aa5667	1526
mahphalke	1:819ac9aa5667	1527	*desc = calloc(1, sizeof(struct iio_ad7606_desc));
mahphalke	1:819ac9aa5667	1528	if (!(*desc)) {
mahphalke	1:819ac9aa5667	1529	iio_unregister(iio_interface);
mahphalke	1:819ac9aa5667	1530	free(iio_interface);
mahphalke	1:819ac9aa5667	1531	return FAILURE;
mahphalke	1:819ac9aa5667	1532	}
mahphalke	1:819ac9aa5667	1533
mahphalke	1:819ac9aa5667	1534	(*desc)->iio_interface = iio_interface;
mahphalke	1:819ac9aa5667	1535
mahphalke	1:819ac9aa5667	1536	return SUCCESS;
mahphalke	1:819ac9aa5667	1537	}
mahphalke	1:819ac9aa5667	1538
mahphalke	1:819ac9aa5667	1539
mahphalke	1:819ac9aa5667	1540	/**
mahphalke	1:819ac9aa5667	1541	* @brief Release resources allocated for IIO device
mahphalke	1:819ac9aa5667	1542	* @param desc[in] - IIO device descriptor
mahphalke	1:819ac9aa5667	1543	* @return SUCCESS in case of success, FAILURE otherwise
mahphalke	1:819ac9aa5667	1544	*/
mahphalke	1:819ac9aa5667	1545	int32_t iio_ad7606_remove(struct iio_ad7606_desc *desc)
mahphalke	1:819ac9aa5667	1546	{
mahphalke	1:819ac9aa5667	1547	int32_t status;
mahphalke	1:819ac9aa5667	1548
mahphalke	1:819ac9aa5667	1549	if (!desc) {
mahphalke	1:819ac9aa5667	1550	return FAILURE;
mahphalke	1:819ac9aa5667	1551	}
mahphalke	1:819ac9aa5667	1552
mahphalke	1:819ac9aa5667	1553	status = iio_unregister(desc->iio_interface);
mahphalke	1:819ac9aa5667	1554	if (status < 0) {
mahphalke	1:819ac9aa5667	1555	return FAILURE;
mahphalke	1:819ac9aa5667	1556	}
mahphalke	1:819ac9aa5667	1557
mahphalke	1:819ac9aa5667	1558	status = iio_ad7606_delete_device(desc->iio_interface->iio);
mahphalke	1:819ac9aa5667	1559	if (status < 0) {
mahphalke	1:819ac9aa5667	1560	return FAILURE;
mahphalke	1:819ac9aa5667	1561	}
mahphalke	1:819ac9aa5667	1562
mahphalke	1:819ac9aa5667	1563	free(desc->iio_interface);
mahphalke	1:819ac9aa5667	1564	free(desc);
mahphalke	1:819ac9aa5667	1565
mahphalke	1:819ac9aa5667	1566	return SUCCESS;
mahphalke	1:819ac9aa5667	1567	}
mahphalke	1:819ac9aa5667	1568
mahphalke	1:819ac9aa5667	1569
mahphalke	1:819ac9aa5667	1570	/*!
mahphalke	1:819ac9aa5667	1571	* @brief Get scale factor for adc data to voltage conversion for IIO client
mahphalke	1:819ac9aa5667	1572	* @param chn_range[in] - Current channel voltage range
mahphalke	1:819ac9aa5667	1573	* @param chn_range_bits[in] - Channel range register bits
mahphalke	1:819ac9aa5667	1574	* @return scale
mahphalke	1:819ac9aa5667	1575	* @details This function samples and capture the new data when previous data
mahphalke	1:819ac9aa5667	1576	* is transmitted to IIO client
mahphalke	1:819ac9aa5667	1577	*/
mahphalke	1:819ac9aa5667	1578	static float get_vltg_conv_scale_factor(float chn_range, polarity_e polarity)
mahphalke	1:819ac9aa5667	1579	{
mahphalke	1:819ac9aa5667	1580	float scale;
mahphalke	1:819ac9aa5667	1581
mahphalke	1:819ac9aa5667	1582	/* Get the scale factor for voltage conversion from range */
mahphalke	1:819ac9aa5667	1583	if (polarity == UNIPOLAR) {
mahphalke	1:819ac9aa5667	1584	scale = (chn_range / ADC_MAX_COUNT_UNIPOLAR) * 1000;
mahphalke	1:819ac9aa5667	1585	} else {
mahphalke	1:819ac9aa5667	1586	scale = (chn_range / ADC_MAX_COUNT_BIPOLAR) * 1000;
mahphalke	1:819ac9aa5667	1587	}
mahphalke	1:819ac9aa5667	1588
mahphalke	1:819ac9aa5667	1589	return scale;
mahphalke	1:819ac9aa5667	1590	}
mahphalke	1:819ac9aa5667	1591
mahphalke	1:819ac9aa5667	1592
mahphalke	1:819ac9aa5667	1593	/**
mahphalke	1:819ac9aa5667	1594	* @brief Save local variables
mahphalke	1:819ac9aa5667	1595	* @return none
mahphalke	1:819ac9aa5667	1596	* @details This function saves the local parameters with updated device values
mahphalke	1:819ac9aa5667	1597	*/
mahphalke	1:819ac9aa5667	1598	static void save_local_attributes(void)
mahphalke	1:819ac9aa5667	1599	{
mahphalke	1:819ac9aa5667	1600	char buf[50];
mahphalke	1:819ac9aa5667	1601	struct iio_ch_info channel;
mahphalke	1:819ac9aa5667	1602
mahphalke	1:819ac9aa5667	1603	for (uint8_t chn = 1; chn <= AD7606X_ADC_CHANNELS; chn++) {
mahphalke	1:819ac9aa5667	1604	channel.ch_num = chn;
mahphalke	1:819ac9aa5667	1605
mahphalke	1:819ac9aa5667	1606	/* Get channel range */
mahphalke	1:819ac9aa5667	1607	(void)get_chn_range(p_ad7606_dev, buf, 0, &channel);
mahphalke	1:819ac9aa5667	1608
mahphalke	1:819ac9aa5667	1609	/* Get scale */
mahphalke	1:819ac9aa5667	1610	attr_scale_val[channel.ch_num - 1] = get_vltg_conv_scale_factor(
mahphalke	1:819ac9aa5667	1611	attr_chn_range[channel.ch_num - 1],
mahphalke	1:819ac9aa5667	1612	attr_polarity_val[channel.ch_num - 1]);
mahphalke	1:819ac9aa5667	1613	}
mahphalke	1:819ac9aa5667	1614	}
mahphalke	1:819ac9aa5667	1615
mahphalke	1:819ac9aa5667	1616
mahphalke	1:819ac9aa5667	1617	/**
mahphalke	1:819ac9aa5667	1618	* @brief Initialize the IRQ contoller
mahphalke	1:819ac9aa5667	1619	* @param uart_desc[in] - UART descriptor for UART Rx IRQ event init
mahphalke	1:819ac9aa5667	1620	* @return none
mahphalke	1:819ac9aa5667	1621	* @details This function initialize the interrupt controller
mahphalke	1:819ac9aa5667	1622	*/
mahphalke	1:819ac9aa5667	1623	static int32_t iio_interrupt_handler_init(mbed_uart_desc *uart_desc)
mahphalke	1:819ac9aa5667	1624	{
mahphalke	1:819ac9aa5667	1625	/* Pin to generate external interrupt */
mahphalke	1:819ac9aa5667	1626	PinName ext_int_pin = BUSY_PIN;
mahphalke	1:819ac9aa5667	1627
mahphalke	1:819ac9aa5667	1628	/* External interrupt descriptor */
mahphalke	1:819ac9aa5667	1629	struct irq_ctrl_desc *external_int_desc;
mahphalke	1:819ac9aa5667	1630
mahphalke	1:819ac9aa5667	1631	/* Define external interrupt platform specific parameters structure */
mahphalke	1:819ac9aa5667	1632	mbed_irq_init_param mbed_ext_int_init_param = {
mahphalke	1:819ac9aa5667	1633	.int_mode = EXT_IRQ_FALL,
mahphalke	1:819ac9aa5667	1634	.int_obj_type = &ext_int_pin
mahphalke	1:819ac9aa5667	1635	};
mahphalke	1:819ac9aa5667	1636
mahphalke	1:819ac9aa5667	1637	/* External interrupt init parameters */
mahphalke	1:819ac9aa5667	1638	struct irq_init_param external_int_init_param = {
mahphalke	1:819ac9aa5667	1639	.irq_ctrl_id = EXTERNAL_INT_ID,
mahphalke	1:819ac9aa5667	1640	.extra = &mbed_ext_int_init_param
mahphalke	1:819ac9aa5667	1641	};
mahphalke	1:819ac9aa5667	1642
mahphalke	1:819ac9aa5667	1643	/* External interrupt callback descriptor */
mahphalke	1:819ac9aa5667	1644	struct callback_desc external_int_callback_desc = {
mahphalke	1:819ac9aa5667	1645	&do_conversion_callback,
mahphalke	1:819ac9aa5667	1646	NULL,
mahphalke	1:819ac9aa5667	1647	NULL
mahphalke	1:819ac9aa5667	1648	};
mahphalke	1:819ac9aa5667	1649
mahphalke	1:819ac9aa5667	1650	/* UART Rx interrupt descriptor */
mahphalke	1:819ac9aa5667	1651	struct irq_ctrl_desc *uart_rx_int_desc;
mahphalke	1:819ac9aa5667	1652
mahphalke	1:819ac9aa5667	1653	/* Define external interrupt platform specific parameters structure */
mahphalke	1:819ac9aa5667	1654	mbed_irq_init_param mbed_uart_rx_int_init_param = {
mahphalke	1:819ac9aa5667	1655	.int_mode = 0,
mahphalke	1:819ac9aa5667	1656	.int_obj_type = uart_desc->uart_port
mahphalke	1:819ac9aa5667	1657	};
mahphalke	1:819ac9aa5667	1658
mahphalke	1:819ac9aa5667	1659	/* UART Rx interrupt init parameters */
mahphalke	1:819ac9aa5667	1660	struct irq_init_param uart_rx_int_init_param = {
mahphalke	1:819ac9aa5667	1661	.irq_ctrl_id = UART_RX_INT_ID,
mahphalke	1:819ac9aa5667	1662	.extra = &mbed_uart_rx_int_init_param
mahphalke	1:819ac9aa5667	1663	};
mahphalke	1:819ac9aa5667	1664
mahphalke	1:819ac9aa5667	1665	/* UART Rx interrupt callback descriptor */
mahphalke	1:819ac9aa5667	1666	struct callback_desc uart_rx_int_callback_desc = {
mahphalke	1:819ac9aa5667	1667	&iio_uart_rx_callback,
mahphalke	1:819ac9aa5667	1668	NULL,
mahphalke	1:819ac9aa5667	1669	NULL
mahphalke	1:819ac9aa5667	1670	};
mahphalke	1:819ac9aa5667	1671
mahphalke	1:819ac9aa5667	1672	/* Init interrupt controller for external interrupt */
mahphalke	1:819ac9aa5667	1673	if (irq_ctrl_init(&external_int_desc, &external_int_init_param) == FAILURE) {
mahphalke	1:819ac9aa5667	1674	return FAILURE;
mahphalke	1:819ac9aa5667	1675	}
mahphalke	1:819ac9aa5667	1676
mahphalke	1:819ac9aa5667	1677	/* Init interrupt controller for UART Rx interrupt */
mahphalke	1:819ac9aa5667	1678	if (irq_ctrl_init(&uart_rx_int_desc, &uart_rx_int_init_param) == FAILURE) {
mahphalke	1:819ac9aa5667	1679	return FAILURE;
mahphalke	1:819ac9aa5667	1680	}
mahphalke	1:819ac9aa5667	1681
mahphalke	1:819ac9aa5667	1682	/* Register a callback function for external interrupt */
mahphalke	1:819ac9aa5667	1683	if (irq_register_callback(external_int_desc, EXTERNAL_INT_ID,
mahphalke	1:819ac9aa5667	1684	&external_int_callback_desc) == FAILURE) {
mahphalke	1:819ac9aa5667	1685	return FAILURE;
mahphalke	1:819ac9aa5667	1686	}
mahphalke	1:819ac9aa5667	1687
mahphalke	1:819ac9aa5667	1688	/* Register a callback function for UART Rx interrupt */
mahphalke	1:819ac9aa5667	1689	if (irq_register_callback(uart_rx_int_desc, UART_RX_INT_ID,
mahphalke	1:819ac9aa5667	1690	&uart_rx_int_callback_desc) == FAILURE) {
mahphalke	1:819ac9aa5667	1691	return FAILURE;
mahphalke	1:819ac9aa5667	1692	}
mahphalke	1:819ac9aa5667	1693
mahphalke	1:819ac9aa5667	1694	return SUCCESS;
mahphalke	1:819ac9aa5667	1695	}
mahphalke	1:819ac9aa5667	1696
mahphalke	1:819ac9aa5667	1697
mahphalke	1:819ac9aa5667	1698	/**
mahphalke	1:819ac9aa5667	1699	* @brief Initialize the IIO interface for AD7606 IIO device
mahphalke	1:819ac9aa5667	1700	* @return none
mahphalke	1:819ac9aa5667	1701	* @return SUCCESS in case of success, FAILURE otherwise
mahphalke	1:819ac9aa5667	1702	*/
mahphalke	1:819ac9aa5667	1703	int32_t ad7606_iio_initialize(void)
mahphalke	1:819ac9aa5667	1704	{
mahphalke	1:819ac9aa5667	1705	int32_t init_status;
mahphalke	1:819ac9aa5667	1706
mahphalke	1:819ac9aa5667	1707	/**
mahphalke	1:819ac9aa5667	1708	* AD7606 IIO instance descriptor
mahphalke	1:819ac9aa5667	1709	*/
mahphalke	1:819ac9aa5667	1710	struct iio_ad7606_desc *piio_ad7606_desc;
mahphalke	1:819ac9aa5667	1711
mahphalke	1:819ac9aa5667	1712	/**
mahphalke	1:819ac9aa5667	1713	* AD7606 IIO init parameters
mahphalke	1:819ac9aa5667	1714	*/
mahphalke	1:819ac9aa5667	1715	struct iio_ad7606_init_param iio_ad7606_init_param;
mahphalke	1:819ac9aa5667	1716
mahphalke	1:819ac9aa5667	1717	/**
mahphalke	1:819ac9aa5667	1718	* IIO application init parameters
mahphalke	1:819ac9aa5667	1719	*/
mahphalke	1:819ac9aa5667	1720	struct iio_app_init_param iio_app_init_par;
mahphalke	1:819ac9aa5667	1721
mahphalke	1:819ac9aa5667	1722	/**
mahphalke	1:819ac9aa5667	1723	* UART serial interface read/write callback
mahphalke	1:819ac9aa5667	1724	*/
mahphalke	1:819ac9aa5667	1725	struct iio_server_ops uart_iio_server_ops;
mahphalke	1:819ac9aa5667	1726
mahphalke	1:819ac9aa5667	1727	/*
mahphalke	1:819ac9aa5667	1728	* UART Mbed init extra parameters structure
mahphalke	1:819ac9aa5667	1729	*/
mahphalke	1:819ac9aa5667	1730	mbed_uart_init_param uart_extra_init_param;
mahphalke	1:819ac9aa5667	1731
mahphalke	1:819ac9aa5667	1732	/*
mahphalke	1:819ac9aa5667	1733	* UART init parameters structure
mahphalke	1:819ac9aa5667	1734	*/
mahphalke	1:819ac9aa5667	1735	struct uart_init_param uart_init_param;
mahphalke	1:819ac9aa5667	1736
mahphalke	1:819ac9aa5667	1737	/**
mahphalke	1:819ac9aa5667	1738	* IIO application UART descriptor
mahphalke	1:819ac9aa5667	1739	*/
mahphalke	1:819ac9aa5667	1740	struct uart_desc *uart_desc = NULL;
mahphalke	1:819ac9aa5667	1741
mahphalke	1:819ac9aa5667	1742	/*
mahphalke	1:819ac9aa5667	1743	* GPIO LED Init parameters structure
mahphalke	1:819ac9aa5667	1744	*/
mahphalke	1:819ac9aa5667	1745	struct gpio_init_param gpio_init_led;
mahphalke	1:819ac9aa5667	1746
mahphalke	1:819ac9aa5667	1747	iio_ad7606_init_param = (struct iio_ad7606_init_param) {
mahphalke	1:819ac9aa5667	1748	.ad7606_phy = NULL,
mahphalke	1:819ac9aa5667	1749	};
mahphalke	1:819ac9aa5667	1750
mahphalke	1:819ac9aa5667	1751	uart_extra_init_param = (mbed_uart_init_param) {
mahphalke	1:819ac9aa5667	1752	.uart_tx_pin = UART_TX,
mahphalke	1:819ac9aa5667	1753	.uart_rx_pin = UART_RX
mahphalke	1:819ac9aa5667	1754	};
mahphalke	1:819ac9aa5667	1755
mahphalke	1:819ac9aa5667	1756	uart_init_param = (struct uart_init_param ) {
mahphalke	1:819ac9aa5667	1757	.device_id = NULL,
mahphalke	1:819ac9aa5667	1758	.baud_rate = IIO_UART_BAUD_RATE,
mahphalke	1:819ac9aa5667	1759	.extra = &uart_extra_init_param
mahphalke	1:819ac9aa5667	1760	};
mahphalke	1:819ac9aa5667	1761
mahphalke	1:819ac9aa5667	1762	uart_iio_server_ops = (struct iio_server_ops) {
mahphalke	1:819ac9aa5667	1763	.read = iio_uart_read,
mahphalke	1:819ac9aa5667	1764	.write = iio_uart_write,
mahphalke	1:819ac9aa5667	1765	};
mahphalke	1:819ac9aa5667	1766
mahphalke	1:819ac9aa5667	1767	gpio_init_led = (struct gpio_init_param) {
mahphalke	1:819ac9aa5667	1768	.number = LED_GREEN,
mahphalke	1:819ac9aa5667	1769	.extra = NULL
mahphalke	1:819ac9aa5667	1770	};
mahphalke	1:819ac9aa5667	1771
mahphalke	1:819ac9aa5667	1772	iio_app_init_par = (struct iio_app_init_param) {
mahphalke	1:819ac9aa5667	1773	.iio_server_ops = &uart_iio_server_ops,
mahphalke	1:819ac9aa5667	1774	};
mahphalke	1:819ac9aa5667	1775
mahphalke	1:819ac9aa5667	1776	/* Initialize AD7606 device and peripheral interface */
mahphalke	1:819ac9aa5667	1777	init_status = ad7606_init(&p_ad7606_dev, &ad7606_init_str);
mahphalke	1:819ac9aa5667	1778	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1779	return init_status;
mahphalke	1:819ac9aa5667	1780	}
mahphalke	1:819ac9aa5667	1781
mahphalke	1:819ac9aa5667	1782	/* Initialize the LED GPIO descriptor */
mahphalke	1:819ac9aa5667	1783	init_status = gpio_get_optional(&gpio_led, &gpio_init_led);
mahphalke	1:819ac9aa5667	1784	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1785	return init_status;
mahphalke	1:819ac9aa5667	1786	} else {
mahphalke	1:819ac9aa5667	1787	init_status = gpio_direction_output(gpio_led, GPIO_HIGH);
mahphalke	1:819ac9aa5667	1788	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1789	return init_status;
mahphalke	1:819ac9aa5667	1790	}
mahphalke	1:819ac9aa5667	1791	}
mahphalke	1:819ac9aa5667	1792
mahphalke	1:819ac9aa5667	1793	/* Get the AD7606 IIO device instance */
mahphalke	1:819ac9aa5667	1794	iio_ad7606_init_param.ad7606_phy = p_ad7606_dev;
mahphalke	1:819ac9aa5667	1795
mahphalke	1:819ac9aa5667	1796	/* Initialize the UART interface for IIO application */
mahphalke	1:819ac9aa5667	1797	init_status = iio_uart_init(&uart_desc, &uart_init_param);
mahphalke	1:819ac9aa5667	1798	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1799	return init_status;
mahphalke	1:819ac9aa5667	1800	}
mahphalke	1:819ac9aa5667	1801
mahphalke	1:819ac9aa5667	1802	/* Initialize the IIO application interface */
mahphalke	1:819ac9aa5667	1803	init_status = iio_app_init(&iio_app_desc, &iio_app_init_par);
mahphalke	1:819ac9aa5667	1804	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1805	return init_status;
mahphalke	1:819ac9aa5667	1806	}
mahphalke	1:819ac9aa5667	1807
mahphalke	1:819ac9aa5667	1808	/* Register and initialize the AD7606 device into IIO interface */
mahphalke	1:819ac9aa5667	1809	init_status = iio_ad7606_init(&piio_ad7606_desc, &iio_ad7606_init_param);
mahphalke	1:819ac9aa5667	1810	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1811	return init_status;
mahphalke	1:819ac9aa5667	1812	}
mahphalke	1:819ac9aa5667	1813
mahphalke	1:819ac9aa5667	1814	/* Init the data capture for AD7606 IIO app */
mahphalke	1:819ac9aa5667	1815	init_status = iio_data_capture_init(p_ad7606_dev);
mahphalke	1:819ac9aa5667	1816	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1817	return init_status;
mahphalke	1:819ac9aa5667	1818	}
mahphalke	1:819ac9aa5667	1819
mahphalke	1:819ac9aa5667	1820	/* Init the interrupt event handler for AD7606 IIO app */
mahphalke	1:819ac9aa5667	1821	init_status = iio_interrupt_handler_init(uart_desc->extra);
mahphalke	1:819ac9aa5667	1822	if (init_status != SUCCESS) {
mahphalke	1:819ac9aa5667	1823	return init_status;
mahphalke	1:819ac9aa5667	1824	}
mahphalke	1:819ac9aa5667	1825
mahphalke	1:819ac9aa5667	1826	return init_status;
mahphalke	1:819ac9aa5667	1827	}
mahphalke	1:819ac9aa5667	1828
mahphalke	1:819ac9aa5667	1829
mahphalke	1:819ac9aa5667	1830	/**
mahphalke	1:819ac9aa5667	1831	* @brief Run the AD7606 IIO event handler
mahphalke	1:819ac9aa5667	1832	* @return none
mahphalke	1:819ac9aa5667	1833	* @details This function monitors the new IIO client event
mahphalke	1:819ac9aa5667	1834	*/
mahphalke	1:819ac9aa5667	1835	void ad7606_iio_event_handler(void)
mahphalke	1:819ac9aa5667	1836	{
mahphalke	1:819ac9aa5667	1837	/* Handle new IIO command */
mahphalke	1:819ac9aa5667	1838	if (is_new_iio_command_detected()) {
mahphalke	1:819ac9aa5667	1839	/* Stop the background data capture if it is running before and any
mahphalke	1:819ac9aa5667	1840	* iio command except READBUF is received */
mahphalke	1:819ac9aa5667	1841	if (adc_background_data_capture_started) {
mahphalke	1:819ac9aa5667	1842	if (!check_iio_cmd("READBUF", 7)) {
mahphalke	1:819ac9aa5667	1843	stop_background_data_capture();
mahphalke	1:819ac9aa5667	1844	adc_background_data_capture_started = false;
mahphalke	1:819ac9aa5667	1845	}
mahphalke	1:819ac9aa5667	1846	}
mahphalke	1:819ac9aa5667	1847
mahphalke	1:819ac9aa5667	1848	/* Run the IIO interface when new command is detected */
mahphalke	1:819ac9aa5667	1849	(void)iio_app(iio_app_desc);
mahphalke	1:819ac9aa5667	1850	}
mahphalke	1:819ac9aa5667	1851	}

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Type:	Program
Mbed OS support:	Mbed OS
Created:	06 Aug 2020
Imports:	50
Forks:	0
Commits:	8
Dependents:	0
Dependencies:	1
Followers:	104

app/iio_ad7606.c@1:819ac9aa5667, 2020-10-05 (annotated)

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