Analog Devices / Mbed OS EVAL-AD4110

IIO firmware for the AD4110

Dependencies:   tempsensors sdp_k1_sdram

app/ad4110_iio.c@0:6ca37a8f8ba9, 2022-07-27 (annotated)

Committer:
Janani Sunil
Date:
Wed Jul 27 17:04:15 2022 +0530
Revision:
0:6ca37a8f8ba9
Initial implementation for AD4110 IIO Firmware

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Janani Sunil 0:6ca37a8f8ba9 1 /***************************************************************************//**
Janani Sunil 0:6ca37a8f8ba9 2 * @file ad4110_iio.c
Janani Sunil 0:6ca37a8f8ba9 3 * @brief Implementation of AD4110-1 IIO application interfaces
Janani Sunil 0:6ca37a8f8ba9 4 ********************************************************************************
Janani Sunil 0:6ca37a8f8ba9 5 * Copyright (c) 2022 Analog Devices, Inc.
Janani Sunil 0:6ca37a8f8ba9 6 * All rights reserved.
Janani Sunil 0:6ca37a8f8ba9 7 *
Janani Sunil 0:6ca37a8f8ba9 8 * This software is proprietary to Analog Devices, Inc. and its licensors.
Janani Sunil 0:6ca37a8f8ba9 9 * By using this software you agree to the terms of the associated
Janani Sunil 0:6ca37a8f8ba9 10 * Analog Devices Software License Agreement.
Janani Sunil 0:6ca37a8f8ba9 11 *******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 12
Janani Sunil 0:6ca37a8f8ba9 13 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 14 /***************************** Include Files **********************************/
Janani Sunil 0:6ca37a8f8ba9 15 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 16
Janani Sunil 0:6ca37a8f8ba9 17 #include <stdlib.h>
Janani Sunil 0:6ca37a8f8ba9 18 #include "ad4110_iio.h"
Janani Sunil 0:6ca37a8f8ba9 19 #include "app_config.h"
Janani Sunil 0:6ca37a8f8ba9 20 #include "ad4110.h"
Janani Sunil 0:6ca37a8f8ba9 21 #include "no_os_error.h"
Janani Sunil 0:6ca37a8f8ba9 22 #include "no_os_util.h"
Janani Sunil 0:6ca37a8f8ba9 23 #include "ad4110_data_capture.h"
Janani Sunil 0:6ca37a8f8ba9 24 #include "ad4110_temperature_sensor.h"
Janani Sunil 0:6ca37a8f8ba9 25
Janani Sunil 0:6ca37a8f8ba9 26 /* Forward declaration of getter/setter functions */
Janani Sunil 0:6ca37a8f8ba9 27 static int ad4110_get_attribute(void *device, char *buf, uint32_t len,
Janani Sunil 0:6ca37a8f8ba9 28 const struct iio_ch_info *channel, intptr_t priv);
Janani Sunil 0:6ca37a8f8ba9 29
Janani Sunil 0:6ca37a8f8ba9 30 static int ad4110_set_attribute(void *device, char *buf, uint32_t len,
Janani Sunil 0:6ca37a8f8ba9 31 const struct iio_ch_info *channel,intptr_t priv);
Janani Sunil 0:6ca37a8f8ba9 32
Janani Sunil 0:6ca37a8f8ba9 33 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 34 /************************ Macros/Constants ************************************/
Janani Sunil 0:6ca37a8f8ba9 35 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 36
Janani Sunil 0:6ca37a8f8ba9 37 /* Bytes per sample (*Note: 4 bytes needed per sample for data range
Janani Sunil 0:6ca37a8f8ba9 38 * of 0 to 32-bit) */
Janani Sunil 0:6ca37a8f8ba9 39 #define BYTES_PER_SAMPLE sizeof(uint32_t)
Janani Sunil 0:6ca37a8f8ba9 40
Janani Sunil 0:6ca37a8f8ba9 41 /* Number of data storage bits (needed for IIO client) */
Janani Sunil 0:6ca37a8f8ba9 42 #define CHN_STORAGE_BITS (BYTES_PER_SAMPLE * 8)
Janani Sunil 0:6ca37a8f8ba9 43
Janani Sunil 0:6ca37a8f8ba9 44 /* Channel Attribute definition */
Janani Sunil 0:6ca37a8f8ba9 45 #define AD4110_CH_ATTR(_name, _idx) {\
Janani Sunil 0:6ca37a8f8ba9 46 .name = _name,\
Janani Sunil 0:6ca37a8f8ba9 47 .priv = _idx,\
Janani Sunil 0:6ca37a8f8ba9 48 .show = ad4110_get_attribute,\
Janani Sunil 0:6ca37a8f8ba9 49 .store = ad4110_set_attribute\
Janani Sunil 0:6ca37a8f8ba9 50 }
Janani Sunil 0:6ca37a8f8ba9 51
Janani Sunil 0:6ca37a8f8ba9 52 /* Channel definition */
Janani Sunil 0:6ca37a8f8ba9 53 #define AD4110_CHANNEL(_name, _idx) {\
Janani Sunil 0:6ca37a8f8ba9 54 .name = _name # _idx, \
Janani Sunil 0:6ca37a8f8ba9 55 .ch_type = IIO_CHANNEL_TYPE,\
Janani Sunil 0:6ca37a8f8ba9 56 .ch_out = false,\
Janani Sunil 0:6ca37a8f8ba9 57 .indexed = true,\
Janani Sunil 0:6ca37a8f8ba9 58 .channel = _idx,\
Janani Sunil 0:6ca37a8f8ba9 59 .scan_index = _idx,\
Janani Sunil 0:6ca37a8f8ba9 60 .scan_type = &ad4110_scan_type,\
Janani Sunil 0:6ca37a8f8ba9 61 .attributes = ad4110_channel_attributes\
Janani Sunil 0:6ca37a8f8ba9 62 }
Janani Sunil 0:6ca37a8f8ba9 63
Janani Sunil 0:6ca37a8f8ba9 64 #if (REGISTER_READ_SEL == AD4110_ADC)
Janani Sunil 0:6ca37a8f8ba9 65 #define REGISTER_MAX_VAL AD4110_ADC_GAIN3
Janani Sunil 0:6ca37a8f8ba9 66 #else // AD4110_AFE
Janani Sunil 0:6ca37a8f8ba9 67 #define REGISTER_MAX_VAL AD4110_REG_AFE_NO_PWR_DEFAULT_STATUS
Janani Sunil 0:6ca37a8f8ba9 68 #endif
Janani Sunil 0:6ca37a8f8ba9 69
Janani Sunil 0:6ca37a8f8ba9 70 /* SCale value for voltage and current mode configuration */
Janani Sunil 0:6ca37a8f8ba9 71 #define AD4110_BIPOLAR_SCALE ((AD4110_REF_VOLTAGE / (ADC_MAX_COUNT_BIPOLAR)) * 1000) /AD4110_DEFAULT_PGA
Janani Sunil 0:6ca37a8f8ba9 72 #define AD4110_UNIPOLAR_SCALE ((AD4110_REF_VOLTAGE / (ADC_MAX_COUNT_UNIPOLAR)) * 1000) /AD4110_DEFAULT_PGA
Janani Sunil 0:6ca37a8f8ba9 73
Janani Sunil 0:6ca37a8f8ba9 74 /* IIO Channel type for each demo mode config */
Janani Sunil 0:6ca37a8f8ba9 75 #if (ACTIVE_DEMO_MODE_CONFIG == VOLTAGE_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 76 #define IIO_CHANNEL_TYPE IIO_VOLTAGE
Janani Sunil 0:6ca37a8f8ba9 77 #elif (ACTIVE_DEMO_MODE_CONFIG == CURRENT_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 78 #define IIO_CHANNEL_TYPE IIO_CURRENT
Janani Sunil 0:6ca37a8f8ba9 79 #elif (ACTIVE_DEMO_MODE_CONFIG == FIELD_POWER_SUPPLY_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 80 #define IIO_CHANNEL_TYPE IIO_CURRENT
Janani Sunil 0:6ca37a8f8ba9 81 #elif (ACTIVE_DEMO_MODE_CONFIG == THERMOCOUPLE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 82 #define IIO_CHANNEL_TYPE IIO_TEMP
Janani Sunil 0:6ca37a8f8ba9 83 #elif (ACTIVE_DEMO_MODE_CONFIG == RTD_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 84 #define IIO_CHANNEL_TYPE IIO_TEMP
Janani Sunil 0:6ca37a8f8ba9 85 #endif
Janani Sunil 0:6ca37a8f8ba9 86
Janani Sunil 0:6ca37a8f8ba9 87 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 88 /*************************** Types Declarations *******************************/
Janani Sunil 0:6ca37a8f8ba9 89 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 90
Janani Sunil 0:6ca37a8f8ba9 91 /* IIO interface descriptor */
Janani Sunil 0:6ca37a8f8ba9 92 static struct iio_desc *ad4110_iio_desc;
Janani Sunil 0:6ca37a8f8ba9 93
Janani Sunil 0:6ca37a8f8ba9 94 /* AD4110-1 Device Descriptor */
Janani Sunil 0:6ca37a8f8ba9 95 struct ad4110_dev *ad4110_dev_inst;
Janani Sunil 0:6ca37a8f8ba9 96
Janani Sunil 0:6ca37a8f8ba9 97 /* IIO Device name */
Janani Sunil 0:6ca37a8f8ba9 98 static const char *dev_name = ACTIVE_DEVICE;
Janani Sunil 0:6ca37a8f8ba9 99
Janani Sunil 0:6ca37a8f8ba9 100 /* Channel Attribute ID */
Janani Sunil 0:6ca37a8f8ba9 101 enum ad4110_attribute_id {
Janani Sunil 0:6ca37a8f8ba9 102 RAW_ATTR_ID,
Janani Sunil 0:6ca37a8f8ba9 103 SCALE_ATTR_ID,
Janani Sunil 0:6ca37a8f8ba9 104 OFFSET_ATTR_ID,
Janani Sunil 0:6ca37a8f8ba9 105 SAMPLING_FREQ_ATTR_ID,
Janani Sunil 0:6ca37a8f8ba9 106 DEMO_CONFIG_ATTR_ID
Janani Sunil 0:6ca37a8f8ba9 107 };
Janani Sunil 0:6ca37a8f8ba9 108
Janani Sunil 0:6ca37a8f8ba9 109 struct scan_type ad4110_scan_type = {
Janani Sunil 0:6ca37a8f8ba9 110 .storagebits = CHN_STORAGE_BITS,
Janani Sunil 0:6ca37a8f8ba9 111 .shift = 0,
Janani Sunil 0:6ca37a8f8ba9 112 .is_big_endian = false
Janani Sunil 0:6ca37a8f8ba9 113 };
Janani Sunil 0:6ca37a8f8ba9 114
Janani Sunil 0:6ca37a8f8ba9 115 /* Global attributes */
Janani Sunil 0:6ca37a8f8ba9 116 static struct iio_attribute ad4110_global_attributes[] = {
Janani Sunil 0:6ca37a8f8ba9 117 AD4110_CH_ATTR("sampling_frequency", SAMPLING_FREQ_ATTR_ID),
Janani Sunil 0:6ca37a8f8ba9 118 AD4110_CH_ATTR("demo_config", DEMO_CONFIG_ATTR_ID),
Janani Sunil 0:6ca37a8f8ba9 119
Janani Sunil 0:6ca37a8f8ba9 120 END_ATTRIBUTES_ARRAY
Janani Sunil 0:6ca37a8f8ba9 121 };
Janani Sunil 0:6ca37a8f8ba9 122
Janani Sunil 0:6ca37a8f8ba9 123 /* Channel attributes */
Janani Sunil 0:6ca37a8f8ba9 124 static struct iio_attribute ad4110_channel_attributes[] = {
Janani Sunil 0:6ca37a8f8ba9 125 AD4110_CH_ATTR("raw", RAW_ATTR_ID),
Janani Sunil 0:6ca37a8f8ba9 126 AD4110_CH_ATTR("scale", SCALE_ATTR_ID),
Janani Sunil 0:6ca37a8f8ba9 127 AD4110_CH_ATTR("offset", OFFSET_ATTR_ID),
Janani Sunil 0:6ca37a8f8ba9 128
Janani Sunil 0:6ca37a8f8ba9 129 END_ATTRIBUTES_ARRAY
Janani Sunil 0:6ca37a8f8ba9 130 };
Janani Sunil 0:6ca37a8f8ba9 131
Janani Sunil 0:6ca37a8f8ba9 132 /* IIOD channels configurations for AD4110-1 */
Janani Sunil 0:6ca37a8f8ba9 133 static struct iio_channel ad4110_iio_channels[] = {
Janani Sunil 0:6ca37a8f8ba9 134 AD4110_CHANNEL("Chn", 0),
Janani Sunil 0:6ca37a8f8ba9 135 AD4110_CHANNEL("Chn", 1),
Janani Sunil 0:6ca37a8f8ba9 136 AD4110_CHANNEL("Chn", 2),
Janani Sunil 0:6ca37a8f8ba9 137 AD4110_CHANNEL("Chn", 3)
Janani Sunil 0:6ca37a8f8ba9 138 };
Janani Sunil 0:6ca37a8f8ba9 139
Janani Sunil 0:6ca37a8f8ba9 140 /* IIO context attributes list */
Janani Sunil 0:6ca37a8f8ba9 141 static struct iio_context_attribute ad4110_iio_context_attributes[] = {
Janani Sunil 0:6ca37a8f8ba9 142 {
Janani Sunil 0:6ca37a8f8ba9 143 .name = "hw_mezzanine",
Janani Sunil 0:6ca37a8f8ba9 144 .value = HW_MEZZANINE_NAME
Janani Sunil 0:6ca37a8f8ba9 145 },
Janani Sunil 0:6ca37a8f8ba9 146 {
Janani Sunil 0:6ca37a8f8ba9 147 .name = "hw_carrier",
Janani Sunil 0:6ca37a8f8ba9 148 .value = HW_CARRIER_NAME
Janani Sunil 0:6ca37a8f8ba9 149 },
Janani Sunil 0:6ca37a8f8ba9 150 {
Janani Sunil 0:6ca37a8f8ba9 151 .name = "hw_name",
Janani Sunil 0:6ca37a8f8ba9 152 .value = HW_NAME
Janani Sunil 0:6ca37a8f8ba9 153 },
Janani Sunil 0:6ca37a8f8ba9 154 END_ATTRIBUTES_ARRAY
Janani Sunil 0:6ca37a8f8ba9 155 };
Janani Sunil 0:6ca37a8f8ba9 156
Janani Sunil 0:6ca37a8f8ba9 157 /* Scale attribute value per channel */
Janani Sunil 0:6ca37a8f8ba9 158 float attr_scale_val[AD4110_NUM_CHANNELS];
Janani Sunil 0:6ca37a8f8ba9 159
Janani Sunil 0:6ca37a8f8ba9 160 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 161 /************************ Functions Definitions *******************************/
Janani Sunil 0:6ca37a8f8ba9 162 /******************************************************************************/
Janani Sunil 0:6ca37a8f8ba9 163
Janani Sunil 0:6ca37a8f8ba9 164 /*!
Janani Sunil 0:6ca37a8f8ba9 165 * @brief Calculate the scale value
Janani Sunil 0:6ca37a8f8ba9 166 * @param chan_id[in] - ADC input channel
Janani Sunil 0:6ca37a8f8ba9 167 * @param adc_raw[in] - Raw ADC Data
Janani Sunil 0:6ca37a8f8ba9 168 * @return 0 in case of success, negative error code otherwise.
Janani Sunil 0:6ca37a8f8ba9 169 */
Janani Sunil 0:6ca37a8f8ba9 170 static int32_t ad4110_get_scale(uint8_t chan_id, int32_t adc_raw)
Janani Sunil 0:6ca37a8f8ba9 171 {
Janani Sunil 0:6ca37a8f8ba9 172 float temperature = 0;
Janani Sunil 0:6ca37a8f8ba9 173 uint32_t cjc_raw_data;
Janani Sunil 0:6ca37a8f8ba9 174 float cjc_temp;
Janani Sunil 0:6ca37a8f8ba9 175 int32_t ret;
Janani Sunil 0:6ca37a8f8ba9 176
Janani Sunil 0:6ca37a8f8ba9 177 #if (ACTIVE_DEMO_MODE_CONFIG == RTD_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 178 temperature = get_rtd_temperature(adc_raw);
Janani Sunil 0:6ca37a8f8ba9 179 attr_scale_val[chan_id] = (temperature / adc_raw) * 1000.0;
Janani Sunil 0:6ca37a8f8ba9 180 #elif (ACTIVE_DEMO_MODE_CONFIG == THERMOCOUPLE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 181 /* Sample the CJC Channel. TC is already sampled through the get_adc_attribute() function */
Janani Sunil 0:6ca37a8f8ba9 182 if (chan_id != CJC_CHANNEL) {
Janani Sunil 0:6ca37a8f8ba9 183 /* Disable the requested channel chan_id */
Janani Sunil 0:6ca37a8f8ba9 184 ret = ad4110_set_channel_status(ad4110_dev_inst, chan_id, false);
Janani Sunil 0:6ca37a8f8ba9 185 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 186 return ret;
Janani Sunil 0:6ca37a8f8ba9 187 }
Janani Sunil 0:6ca37a8f8ba9 188
Janani Sunil 0:6ca37a8f8ba9 189 /* Enable the channel on which CJC has been incorporated */
Janani Sunil 0:6ca37a8f8ba9 190 ret = ad4110_set_channel_status(ad4110_dev_inst, CJC_CHANNEL, true);
Janani Sunil 0:6ca37a8f8ba9 191 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 192 return ret;
Janani Sunil 0:6ca37a8f8ba9 193 }
Janani Sunil 0:6ca37a8f8ba9 194
Janani Sunil 0:6ca37a8f8ba9 195 /* Read the CJC raw data */
Janani Sunil 0:6ca37a8f8ba9 196 if (ad4110_do_single_read(ad4110_dev_inst, &cjc_raw_data)) {
Janani Sunil 0:6ca37a8f8ba9 197 return ret;
Janani Sunil 0:6ca37a8f8ba9 198 }
Janani Sunil 0:6ca37a8f8ba9 199
Janani Sunil 0:6ca37a8f8ba9 200 /* Disable the CJC channel */
Janani Sunil 0:6ca37a8f8ba9 201 ret = ad4110_set_channel_status(ad4110_dev_inst, CJC_CHANNEL, false);
Janani Sunil 0:6ca37a8f8ba9 202 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 203 return ret;
Janani Sunil 0:6ca37a8f8ba9 204 }
Janani Sunil 0:6ca37a8f8ba9 205
Janani Sunil 0:6ca37a8f8ba9 206 } else {
Janani Sunil 0:6ca37a8f8ba9 207 /* For calculating CJC value, TC raw value does not matter */
Janani Sunil 0:6ca37a8f8ba9 208 chan_id = 0;
Janani Sunil 0:6ca37a8f8ba9 209 cjc_raw_data = adc_raw;
Janani Sunil 0:6ca37a8f8ba9 210 adc_raw = 0;
Janani Sunil 0:6ca37a8f8ba9 211 }
Janani Sunil 0:6ca37a8f8ba9 212
Janani Sunil 0:6ca37a8f8ba9 213 /* Calculate the TC and CJC temperature and update scale factor */
Janani Sunil 0:6ca37a8f8ba9 214 temperature = get_tc_temperature(adc_raw, HV_CHANNEL, cjc_raw_data, CJC_CHANNEL,
Janani Sunil 0:6ca37a8f8ba9 215 &cjc_temp);
Janani Sunil 0:6ca37a8f8ba9 216 attr_scale_val[chan_id] = (temperature / adc_raw) * 1000;
Janani Sunil 0:6ca37a8f8ba9 217 attr_scale_val[CJC_CHANNEL] = (cjc_temp / cjc_raw_data) * 1000;
Janani Sunil 0:6ca37a8f8ba9 218 #endif
Janani Sunil 0:6ca37a8f8ba9 219
Janani Sunil 0:6ca37a8f8ba9 220 return 0;
Janani Sunil 0:6ca37a8f8ba9 221 }
Janani Sunil 0:6ca37a8f8ba9 222
Janani Sunil 0:6ca37a8f8ba9 223
Janani Sunil 0:6ca37a8f8ba9 224 /*!
Janani Sunil 0:6ca37a8f8ba9 225 * @brief Getter/Setter function for ADC attributes
Janani Sunil 0:6ca37a8f8ba9 226 * @param device[in]- Pointer to IIO device instance
Janani Sunil 0:6ca37a8f8ba9 227 * @param buf[in]- IIO input data buffer
Janani Sunil 0:6ca37a8f8ba9 228 * @param len[in]- Number of input bytes
Janani Sunil 0:6ca37a8f8ba9 229 * @param channel[in] - ADC input channel
Janani Sunil 0:6ca37a8f8ba9 230 * @param priv[in] - Attribute private ID
Janani Sunil 0:6ca37a8f8ba9 231 * @return len in case of success, negative error code otherwise
Janani Sunil 0:6ca37a8f8ba9 232 */
Janani Sunil 0:6ca37a8f8ba9 233 static int ad4110_get_attribute(void *device, char *buf, uint32_t len,
Janani Sunil 0:6ca37a8f8ba9 234 const struct iio_ch_info *channel, intptr_t priv)
Janani Sunil 0:6ca37a8f8ba9 235 {
Janani Sunil 0:6ca37a8f8ba9 236 int ret;
Janani Sunil 0:6ca37a8f8ba9 237 uint32_t raw_data_read = 0 ;
Janani Sunil 0:6ca37a8f8ba9 238 int32_t offset = 0;
Janani Sunil 0:6ca37a8f8ba9 239 uint8_t ch_id;
Janani Sunil 0:6ca37a8f8ba9 240 float scale;
Janani Sunil 0:6ca37a8f8ba9 241
Janani Sunil 0:6ca37a8f8ba9 242 switch (priv) {
Janani Sunil 0:6ca37a8f8ba9 243 case RAW_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 244 /* Enable the requested channel, disable the rest */
Janani Sunil 0:6ca37a8f8ba9 245 for (ch_id = 0; ch_id < AD4110_NUM_CHANNELS; ch_id++) {
Janani Sunil 0:6ca37a8f8ba9 246 if (ch_id == channel->ch_num) {
Janani Sunil 0:6ca37a8f8ba9 247 ret = ad4110_set_channel_status(device, ch_id, true);
Janani Sunil 0:6ca37a8f8ba9 248 } else {
Janani Sunil 0:6ca37a8f8ba9 249 ret = ad4110_set_channel_status(device, ch_id, false);
Janani Sunil 0:6ca37a8f8ba9 250 }
Janani Sunil 0:6ca37a8f8ba9 251 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 252 return ret;
Janani Sunil 0:6ca37a8f8ba9 253 }
Janani Sunil 0:6ca37a8f8ba9 254 }
Janani Sunil 0:6ca37a8f8ba9 255
Janani Sunil 0:6ca37a8f8ba9 256 /* Perform single conversion */
Janani Sunil 0:6ca37a8f8ba9 257 ret = ad4110_do_single_read(device, &raw_data_read);
Janani Sunil 0:6ca37a8f8ba9 258 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 259 return ret;
Janani Sunil 0:6ca37a8f8ba9 260 }
Janani Sunil 0:6ca37a8f8ba9 261 /* Update scale factor depending on the channel requested */
Janani Sunil 0:6ca37a8f8ba9 262 ret = ad4110_get_scale(channel->ch_num, raw_data_read);
Janani Sunil 0:6ca37a8f8ba9 263 if (ret) {
Janani Sunil 0:6ca37a8f8ba9 264 return ret;
Janani Sunil 0:6ca37a8f8ba9 265 }
Janani Sunil 0:6ca37a8f8ba9 266
Janani Sunil 0:6ca37a8f8ba9 267 return sprintf(buf, "%d", raw_data_read);
Janani Sunil 0:6ca37a8f8ba9 268
Janani Sunil 0:6ca37a8f8ba9 269 case SCALE_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 270 return sprintf(buf, "%g", attr_scale_val[channel->ch_num]);
Janani Sunil 0:6ca37a8f8ba9 271
Janani Sunil 0:6ca37a8f8ba9 272 case OFFSET_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 273 #if (ACTIVE_DEMO_MODE_CONFIG == VOLTAGE_MODE_CONFIG ||\
Janani Sunil 0:6ca37a8f8ba9 274 ACTIVE_DEMO_MODE_CONFIG == CURRENT_MODE_CONFIG ||\
Janani Sunil 0:6ca37a8f8ba9 275 ACTIVE_DEMO_MODE_CONFIG == FIELD_POWER_SUPPLY_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 276 /* Offset values for other demo modes are incorporated as a part of the ad4110_get_scale() function */
Janani Sunil 0:6ca37a8f8ba9 277 if (ad4110_dev_inst->bipolar) {
Janani Sunil 0:6ca37a8f8ba9 278 offset = -ADC_MAX_COUNT_BIPOLAR;
Janani Sunil 0:6ca37a8f8ba9 279 } else {
Janani Sunil 0:6ca37a8f8ba9 280 offset = 0;
Janani Sunil 0:6ca37a8f8ba9 281 }
Janani Sunil 0:6ca37a8f8ba9 282 #endif
Janani Sunil 0:6ca37a8f8ba9 283 return sprintf(buf, "%ld", offset);
Janani Sunil 0:6ca37a8f8ba9 284
Janani Sunil 0:6ca37a8f8ba9 285 case SAMPLING_FREQ_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 286 return sprintf(buf, "%d", AD4110_SAMPLING_RATE);
Janani Sunil 0:6ca37a8f8ba9 287
Janani Sunil 0:6ca37a8f8ba9 288 case DEMO_CONFIG_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 289 #if (ACTIVE_DEMO_MODE_CONFIG == VOLTAGE_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 290 return sprintf(buf, "%s", "Voltage");
Janani Sunil 0:6ca37a8f8ba9 291 #elif (ACTIVE_DEMO_MODE_CONFIG == CURRENT_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 292 return sprintf(buf, "%s", "Current");
Janani Sunil 0:6ca37a8f8ba9 293 #elif (ACTIVE_DEMO_MODE_CONFIG == RTD_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 294 return sprintf(buf, "%s", "RTD");
Janani Sunil 0:6ca37a8f8ba9 295 #elif (ACTIVE_DEMO_MODE_CONFIG == FIELD_POWER_SUPPLY_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 296 return sprintf(buf, "%s", "Field Power Supply");
Janani Sunil 0:6ca37a8f8ba9 297 #elif (ACTIVE_DEMO_MODE_CONFIG == THERMOCOUPLE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 298 return sprintf(buf, "%s", "Thermocouple");
Janani Sunil 0:6ca37a8f8ba9 299 #endif
Janani Sunil 0:6ca37a8f8ba9 300 }
Janani Sunil 0:6ca37a8f8ba9 301
Janani Sunil 0:6ca37a8f8ba9 302 return -EINVAL;
Janani Sunil 0:6ca37a8f8ba9 303 }
Janani Sunil 0:6ca37a8f8ba9 304
Janani Sunil 0:6ca37a8f8ba9 305 static int ad4110_set_attribute(void *device, char *buf, uint32_t len,
Janani Sunil 0:6ca37a8f8ba9 306 const struct iio_ch_info *channel, intptr_t priv)
Janani Sunil 0:6ca37a8f8ba9 307 {
Janani Sunil 0:6ca37a8f8ba9 308 switch (priv) {
Janani Sunil 0:6ca37a8f8ba9 309 case RAW_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 310 case SCALE_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 311 case SAMPLING_FREQ_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 312 case DEMO_CONFIG_ATTR_ID:
Janani Sunil 0:6ca37a8f8ba9 313 default:
Janani Sunil 0:6ca37a8f8ba9 314 break;
Janani Sunil 0:6ca37a8f8ba9 315 }
Janani Sunil 0:6ca37a8f8ba9 316
Janani Sunil 0:6ca37a8f8ba9 317 return len;
Janani Sunil 0:6ca37a8f8ba9 318 }
Janani Sunil 0:6ca37a8f8ba9 319
Janani Sunil 0:6ca37a8f8ba9 320 /**
Janani Sunil 0:6ca37a8f8ba9 321 * @brief Transfer the device data into memory (optional)
Janani Sunil 0:6ca37a8f8ba9 322 * @param dev_instance[in] - IIO device instance
Janani Sunil 0:6ca37a8f8ba9 323 * @param ch_mask[in] - Channels select mask
Janani Sunil 0:6ca37a8f8ba9 324 * @return 0 in case of success or negative value otherwise
Janani Sunil 0:6ca37a8f8ba9 325 */
Janani Sunil 0:6ca37a8f8ba9 326 static int32_t iio_ad4110_pre_enable(void *dev_instance, uint32_t chn_mask)
Janani Sunil 0:6ca37a8f8ba9 327 {
Janani Sunil 0:6ca37a8f8ba9 328 return prepare_data_transfer(chn_mask, AD4110_NUM_CHANNELS, BYTES_PER_SAMPLE);
Janani Sunil 0:6ca37a8f8ba9 329 }
Janani Sunil 0:6ca37a8f8ba9 330
Janani Sunil 0:6ca37a8f8ba9 331 /**
Janani Sunil 0:6ca37a8f8ba9 332 * @brief Read buffer data corresponding to AD4110 IIO device
Janani Sunil 0:6ca37a8f8ba9 333 * @param iio_dev_data[in] - Pointer to IIO device data structure
Janani Sunil 0:6ca37a8f8ba9 334 * @return 0 in case of success or negative value otherwise
Janani Sunil 0:6ca37a8f8ba9 335 */
Janani Sunil 0:6ca37a8f8ba9 336 static int32_t iio_ad4110_submit_buffer(struct iio_device_data *iio_dev_data)
Janani Sunil 0:6ca37a8f8ba9 337 {
Janani Sunil 0:6ca37a8f8ba9 338 int32_t ret;
Janani Sunil 0:6ca37a8f8ba9 339
Janani Sunil 0:6ca37a8f8ba9 340 /* Read the samples counts equal to buffer size/block */
Janani Sunil 0:6ca37a8f8ba9 341 ret = read_buffered_data(&iio_dev_data->buffer->buf->buff,
Janani Sunil 0:6ca37a8f8ba9 342 iio_dev_data->buffer->size);
Janani Sunil 0:6ca37a8f8ba9 343
Janani Sunil 0:6ca37a8f8ba9 344 /* Increment the write spin count as buffer reads all 'n' samples
Janani Sunil 0:6ca37a8f8ba9 345 * in one go which is also the size of buffer block for a given instance.
Janani Sunil 0:6ca37a8f8ba9 346 * The read spin count is incremented from IIO library during buffer
Janani Sunil 0:6ca37a8f8ba9 347 * write/offloading into transmit buffer */
Janani Sunil 0:6ca37a8f8ba9 348 if (iio_dev_data->buffer->buf->write.spin_count >= UINT32_MAX) {
Janani Sunil 0:6ca37a8f8ba9 349 iio_dev_data->buffer->buf->write.spin_count = 0;
Janani Sunil 0:6ca37a8f8ba9 350 }
Janani Sunil 0:6ca37a8f8ba9 351
Janani Sunil 0:6ca37a8f8ba9 352 iio_dev_data->buffer->buf->write.spin_count += 1;
Janani Sunil 0:6ca37a8f8ba9 353
Janani Sunil 0:6ca37a8f8ba9 354 return ret;
Janani Sunil 0:6ca37a8f8ba9 355 }
Janani Sunil 0:6ca37a8f8ba9 356
Janani Sunil 0:6ca37a8f8ba9 357
Janani Sunil 0:6ca37a8f8ba9 358 /**
Janani Sunil 0:6ca37a8f8ba9 359 * @brief Perform tasks before end of current data transfer
Janani Sunil 0:6ca37a8f8ba9 360 * @param dev[in] - IIO device instance
Janani Sunil 0:6ca37a8f8ba9 361 * @return 0 in case of success or negative value otherwise
Janani Sunil 0:6ca37a8f8ba9 362 */
Janani Sunil 0:6ca37a8f8ba9 363 static int32_t iio_ad4110_post_disable(void *dev)
Janani Sunil 0:6ca37a8f8ba9 364 {
Janani Sunil 0:6ca37a8f8ba9 365 return end_data_transfer();
Janani Sunil 0:6ca37a8f8ba9 366 }
Janani Sunil 0:6ca37a8f8ba9 367
Janani Sunil 0:6ca37a8f8ba9 368 /*!
Janani Sunil 0:6ca37a8f8ba9 369 * @brief Read the device register value
Janani Sunil 0:6ca37a8f8ba9 370 * @param dev[in]- Pointer to IIO device instance
Janani Sunil 0:6ca37a8f8ba9 371 * @param reg[in]- Register address to read from
Janani Sunil 0:6ca37a8f8ba9 372 * @param readval[out]- Pointer to variable to read data into
Janani Sunil 0:6ca37a8f8ba9 373 * @return 0 in case of success, negative error code otherwise
Janani Sunil 0:6ca37a8f8ba9 374 */
Janani Sunil 0:6ca37a8f8ba9 375 static int32_t ad4110_read_register(void *dev, uint32_t reg, uint32_t *readval)
Janani Sunil 0:6ca37a8f8ba9 376 {
Janani Sunil 0:6ca37a8f8ba9 377 int ret;
Janani Sunil 0:6ca37a8f8ba9 378
Janani Sunil 0:6ca37a8f8ba9 379 if (reg > REGISTER_MAX_VAL) {
Janani Sunil 0:6ca37a8f8ba9 380 return -EINVAL;
Janani Sunil 0:6ca37a8f8ba9 381 }
Janani Sunil 0:6ca37a8f8ba9 382
Janani Sunil 0:6ca37a8f8ba9 383 ret = ad4110_spi_int_reg_read(dev, REGISTER_READ_SEL, reg, readval);
Janani Sunil 0:6ca37a8f8ba9 384 if (ret < 0) {
Janani Sunil 0:6ca37a8f8ba9 385 return ret;
Janani Sunil 0:6ca37a8f8ba9 386 }
Janani Sunil 0:6ca37a8f8ba9 387
Janani Sunil 0:6ca37a8f8ba9 388 return 0;
Janani Sunil 0:6ca37a8f8ba9 389 }
Janani Sunil 0:6ca37a8f8ba9 390
Janani Sunil 0:6ca37a8f8ba9 391 /*!
Janani Sunil 0:6ca37a8f8ba9 392 * @brief Write into the device register
Janani Sunil 0:6ca37a8f8ba9 393 * @param dev[in] - Pointer to IIO device instance
Janani Sunil 0:6ca37a8f8ba9 394 * @param reg[in] - Register address to write into
Janani Sunil 0:6ca37a8f8ba9 395 * @param writeval[in] - Register value to write
Janani Sunil 0:6ca37a8f8ba9 396 * @return 0 in case of success, negative error code otherwise
Janani Sunil 0:6ca37a8f8ba9 397 */
Janani Sunil 0:6ca37a8f8ba9 398 static int32_t ad4110_write_register(void *dev, uint32_t reg, uint32_t writeval)
Janani Sunil 0:6ca37a8f8ba9 399 {
Janani Sunil 0:6ca37a8f8ba9 400 int ret;
Janani Sunil 0:6ca37a8f8ba9 401
Janani Sunil 0:6ca37a8f8ba9 402 if (reg > REGISTER_MAX_VAL) {
Janani Sunil 0:6ca37a8f8ba9 403 return -EINVAL;
Janani Sunil 0:6ca37a8f8ba9 404 }
Janani Sunil 0:6ca37a8f8ba9 405
Janani Sunil 0:6ca37a8f8ba9 406 ret = ad4110_spi_int_reg_write(dev, REGISTER_READ_SEL, reg, writeval);
Janani Sunil 0:6ca37a8f8ba9 407 if (ret < 0) {
Janani Sunil 0:6ca37a8f8ba9 408 return ret;
Janani Sunil 0:6ca37a8f8ba9 409 }
Janani Sunil 0:6ca37a8f8ba9 410
Janani Sunil 0:6ca37a8f8ba9 411 return 0;
Janani Sunil 0:6ca37a8f8ba9 412 }
Janani Sunil 0:6ca37a8f8ba9 413
Janani Sunil 0:6ca37a8f8ba9 414 /**
Janani Sunil 0:6ca37a8f8ba9 415 * @brief Init for reading/writing and parameterization of a AD4110-1 IIO device
Janani Sunil 0:6ca37a8f8ba9 416 * @param desc[in,out] - IIO device descriptor
Janani Sunil 0:6ca37a8f8ba9 417 * @return 0 in case of success, negative error code otherwise
Janani Sunil 0:6ca37a8f8ba9 418 */
Janani Sunil 0:6ca37a8f8ba9 419 int32_t ad4110_iio_init(struct iio_device **desc)
Janani Sunil 0:6ca37a8f8ba9 420 {
Janani Sunil 0:6ca37a8f8ba9 421 struct iio_device *ad4110_iio_device;
Janani Sunil 0:6ca37a8f8ba9 422
Janani Sunil 0:6ca37a8f8ba9 423 ad4110_iio_device = (struct iio_device *)calloc(1,
Janani Sunil 0:6ca37a8f8ba9 424 sizeof(*ad4110_iio_device));
Janani Sunil 0:6ca37a8f8ba9 425 if (!ad4110_iio_device) {
Janani Sunil 0:6ca37a8f8ba9 426 return -ENOMEM;
Janani Sunil 0:6ca37a8f8ba9 427 }
Janani Sunil 0:6ca37a8f8ba9 428
Janani Sunil 0:6ca37a8f8ba9 429 ad4110_iio_device->num_ch = NO_OS_ARRAY_SIZE(ad4110_iio_channels);
Janani Sunil 0:6ca37a8f8ba9 430 ad4110_iio_device->channels = ad4110_iio_channels;
Janani Sunil 0:6ca37a8f8ba9 431 ad4110_iio_device->attributes = ad4110_global_attributes;
Janani Sunil 0:6ca37a8f8ba9 432 ad4110_iio_device->context_attributes = ad4110_iio_context_attributes;
Janani Sunil 0:6ca37a8f8ba9 433 ad4110_iio_device->pre_enable = iio_ad4110_pre_enable;
Janani Sunil 0:6ca37a8f8ba9 434 ad4110_iio_device->post_disable = iio_ad4110_post_disable;
Janani Sunil 0:6ca37a8f8ba9 435 ad4110_iio_device->submit = iio_ad4110_submit_buffer;
Janani Sunil 0:6ca37a8f8ba9 436 ad4110_iio_device->debug_reg_read = ad4110_read_register;
Janani Sunil 0:6ca37a8f8ba9 437 ad4110_iio_device->debug_reg_write = ad4110_write_register;
Janani Sunil 0:6ca37a8f8ba9 438
Janani Sunil 0:6ca37a8f8ba9 439 *desc = ad4110_iio_device;
Janani Sunil 0:6ca37a8f8ba9 440
Janani Sunil 0:6ca37a8f8ba9 441 return 0;
Janani Sunil 0:6ca37a8f8ba9 442 }
Janani Sunil 0:6ca37a8f8ba9 443
Janani Sunil 0:6ca37a8f8ba9 444
Janani Sunil 0:6ca37a8f8ba9 445 /**
Janani Sunil 0:6ca37a8f8ba9 446 * @brief Update channel attribute structure
Janani Sunil 0:6ca37a8f8ba9 447 * @param dev[in] - AD4110 device descriptor
Janani Sunil 0:6ca37a8f8ba9 448 * @return None
Janani Sunil 0:6ca37a8f8ba9 449 */
Janani Sunil 0:6ca37a8f8ba9 450 static void update_channel_scan_parameters(struct ad4110_dev *dev)
Janani Sunil 0:6ca37a8f8ba9 451 {
Janani Sunil 0:6ca37a8f8ba9 452 uint8_t channel_id;
Janani Sunil 0:6ca37a8f8ba9 453
Janani Sunil 0:6ca37a8f8ba9 454 if (dev->bipolar) {
Janani Sunil 0:6ca37a8f8ba9 455 ad4110_scan_type.sign = 's';
Janani Sunil 0:6ca37a8f8ba9 456 ad4110_scan_type.realbits = CHN_STORAGE_BITS;
Janani Sunil 0:6ca37a8f8ba9 457
Janani Sunil 0:6ca37a8f8ba9 458 /* Update scale value in case of voltage or current mode */
Janani Sunil 0:6ca37a8f8ba9 459 for (channel_id = 0; channel_id < AD4110_NUM_CHANNELS; channel_id++) {
Janani Sunil 0:6ca37a8f8ba9 460 #if (ACTIVE_DEMO_MODE_CONFIG == VOLTAGE_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 461 attr_scale_val[channel_id] = AD4110_BIPOLAR_SCALE;
Janani Sunil 0:6ca37a8f8ba9 462 #elif (ACTIVE_DEMO_MODE_CONFIG == CURRENT_MODE_CONFIG) ||\
Janani Sunil 0:6ca37a8f8ba9 463 (ACTIVE_DEMO_MODE_CONFIG == FIELD_POWER_SUPPLY_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 464 attr_scale_val[channel_id] = AD4110_BIPOLAR_SCALE/AD4110_R_SENSE;
Janani Sunil 0:6ca37a8f8ba9 465
Janani Sunil 0:6ca37a8f8ba9 466 #endif
Janani Sunil 0:6ca37a8f8ba9 467 }
Janani Sunil 0:6ca37a8f8ba9 468 } else {
Janani Sunil 0:6ca37a8f8ba9 469 ad4110_scan_type.sign = 'u';
Janani Sunil 0:6ca37a8f8ba9 470 ad4110_scan_type.realbits = AD4110_RESOLUTION;
Janani Sunil 0:6ca37a8f8ba9 471
Janani Sunil 0:6ca37a8f8ba9 472 for (channel_id = 0; channel_id < AD4110_NUM_CHANNELS; channel_id++) {
Janani Sunil 0:6ca37a8f8ba9 473 #if (ACTIVE_DEMO_MODE_CONFIG == VOLTAGE_MODE_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 474 attr_scale_val[channel_id] = AD4110_UNIPOLAR_SCALE;
Janani Sunil 0:6ca37a8f8ba9 475 #elif (ACTIVE_DEMO_MODE_CONFIG == CURRENT_MODE_CONFIG) ||\
Janani Sunil 0:6ca37a8f8ba9 476 (ACTIVE_DEMO_MODE_CONFIG == FIELD_POWER_SUPPLY_CONFIG)
Janani Sunil 0:6ca37a8f8ba9 477 attr_scale_val[channel_id] = AD4110_UNIPOLAR_SCALE / AD4110_R_SENSE;
Janani Sunil 0:6ca37a8f8ba9 478
Janani Sunil 0:6ca37a8f8ba9 479 #endif
Janani Sunil 0:6ca37a8f8ba9 480 }
Janani Sunil 0:6ca37a8f8ba9 481 }
Janani Sunil 0:6ca37a8f8ba9 482 }
Janani Sunil 0:6ca37a8f8ba9 483
Janani Sunil 0:6ca37a8f8ba9 484
Janani Sunil 0:6ca37a8f8ba9 485 /**
Janani Sunil 0:6ca37a8f8ba9 486 * @brief Initialize the AD4110-1 IIO application
Janani Sunil 0:6ca37a8f8ba9 487 * @return 0 in case of success, negative error code otherwise
Janani Sunil 0:6ca37a8f8ba9 488 */
Janani Sunil 0:6ca37a8f8ba9 489 int32_t ad4110_iio_initialize(void)
Janani Sunil 0:6ca37a8f8ba9 490 {
Janani Sunil 0:6ca37a8f8ba9 491 int32_t ret_status;
Janani Sunil 0:6ca37a8f8ba9 492
Janani Sunil 0:6ca37a8f8ba9 493 /* IIO Device Descriptor */
Janani Sunil 0:6ca37a8f8ba9 494 struct iio_device *ad4110_iio_dev;
Janani Sunil 0:6ca37a8f8ba9 495
Janani Sunil 0:6ca37a8f8ba9 496 /* IIO interface init parameters */
Janani Sunil 0:6ca37a8f8ba9 497 struct iio_init_param iio_init_params = {
Janani Sunil 0:6ca37a8f8ba9 498 .phy_type = USE_UART,
Janani Sunil 0:6ca37a8f8ba9 499 .nb_devs = 1,
Janani Sunil 0:6ca37a8f8ba9 500 };
Janani Sunil 0:6ca37a8f8ba9 501
Janani Sunil 0:6ca37a8f8ba9 502 /* IIOD init parameters */
Janani Sunil 0:6ca37a8f8ba9 503 struct iio_device_init iio_device_init_params = {
Janani Sunil 0:6ca37a8f8ba9 504 .name = (char *)dev_name,
Janani Sunil 0:6ca37a8f8ba9 505 .raw_buf = adc_data_buffer,
Janani Sunil 0:6ca37a8f8ba9 506 .raw_buf_len = DATA_BUFFER_SIZE
Janani Sunil 0:6ca37a8f8ba9 507 };
Janani Sunil 0:6ca37a8f8ba9 508
Janani Sunil 0:6ca37a8f8ba9 509 /* Initialize the system peripherals */
Janani Sunil 0:6ca37a8f8ba9 510 ret_status = init_system();
Janani Sunil 0:6ca37a8f8ba9 511 if (ret_status) {
Janani Sunil 0:6ca37a8f8ba9 512 return ret_status;
Janani Sunil 0:6ca37a8f8ba9 513 }
Janani Sunil 0:6ca37a8f8ba9 514
Janani Sunil 0:6ca37a8f8ba9 515 /* Initialize the AD4110 Device */
Janani Sunil 0:6ca37a8f8ba9 516 ret_status = ad4110_setup(&ad4110_dev_inst, ad4110_init_params);
Janani Sunil 0:6ca37a8f8ba9 517 if (ret_status) {
Janani Sunil 0:6ca37a8f8ba9 518 return ret_status;
Janani Sunil 0:6ca37a8f8ba9 519 }
Janani Sunil 0:6ca37a8f8ba9 520
Janani Sunil 0:6ca37a8f8ba9 521 /* Update channel scan attribute parameters */
Janani Sunil 0:6ca37a8f8ba9 522 update_channel_scan_parameters(ad4110_dev_inst);
Janani Sunil 0:6ca37a8f8ba9 523
Janani Sunil 0:6ca37a8f8ba9 524 /* Initialize the AD4110-1 IIO application interface */
Janani Sunil 0:6ca37a8f8ba9 525 ret_status = ad4110_iio_init(&ad4110_iio_dev);
Janani Sunil 0:6ca37a8f8ba9 526 if (ret_status) {
Janani Sunil 0:6ca37a8f8ba9 527 return ret_status;
Janani Sunil 0:6ca37a8f8ba9 528 }
Janani Sunil 0:6ca37a8f8ba9 529
Janani Sunil 0:6ca37a8f8ba9 530 /* Update iio interface and IIOD init params */
Janani Sunil 0:6ca37a8f8ba9 531 iio_init_params.uart_desc = uart_desc;
Janani Sunil 0:6ca37a8f8ba9 532 iio_device_init_params.dev = ad4110_dev_inst;
Janani Sunil 0:6ca37a8f8ba9 533 iio_device_init_params.dev_descriptor = ad4110_iio_dev;
Janani Sunil 0:6ca37a8f8ba9 534 iio_init_params.devs = &iio_device_init_params;
Janani Sunil 0:6ca37a8f8ba9 535
Janani Sunil 0:6ca37a8f8ba9 536 /* Initialize the IIO interface */
Janani Sunil 0:6ca37a8f8ba9 537 ret_status = iio_init(&ad4110_iio_desc, &iio_init_params);
Janani Sunil 0:6ca37a8f8ba9 538 if (ret_status) {
Janani Sunil 0:6ca37a8f8ba9 539 return ret_status;
Janani Sunil 0:6ca37a8f8ba9 540 }
Janani Sunil 0:6ca37a8f8ba9 541
Janani Sunil 0:6ca37a8f8ba9 542 return 0;
Janani Sunil 0:6ca37a8f8ba9 543 }
Janani Sunil 0:6ca37a8f8ba9 544
Janani Sunil 0:6ca37a8f8ba9 545
Janani Sunil 0:6ca37a8f8ba9 546 /**
Janani Sunil 0:6ca37a8f8ba9 547 * @brief Run the AD4110-1 IIO event handler
Janani Sunil 0:6ca37a8f8ba9 548 * @return None
Janani Sunil 0:6ca37a8f8ba9 549 */
Janani Sunil 0:6ca37a8f8ba9 550 void ad4110_iio_event_handler(void)
Janani Sunil 0:6ca37a8f8ba9 551 {
Janani Sunil 0:6ca37a8f8ba9 552 (void)iio_step(ad4110_iio_desc);
Janani Sunil 0:6ca37a8f8ba9 553 }