Pratyush Mallick / Mbed OS testing

this is testing

app/src/ad7606_support.c@0:3afcd581558d, 2021-01-14 (annotated)

Committer:
pmallick
Date:
Thu Jan 14 18:54:16 2021 +0530
Revision:
0:3afcd581558d
this is testing

Who changed what in which revision?

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pmallick 0:3afcd581558d 1 /*************************************************************************//**
pmallick 0:3afcd581558d 2 * @file ad7606_support.c
pmallick 0:3afcd581558d 3 * @brief AD7606 device No-OS driver supports
pmallick 0:3afcd581558d 4 ******************************************************************************
pmallick 0:3afcd581558d 5 * Copyright (c) 2020 Analog Devices, Inc.
pmallick 0:3afcd581558d 6 *
pmallick 0:3afcd581558d 7 * All rights reserved.
pmallick 0:3afcd581558d 8 *
pmallick 0:3afcd581558d 9 * This software is proprietary to Analog Devices, Inc. and its licensors.
pmallick 0:3afcd581558d 10 * By using this software you agree to the terms of the associated
pmallick 0:3afcd581558d 11 * Analog Devices Software License Agreement.
pmallick 0:3afcd581558d 12 *****************************************************************************/
pmallick 0:3afcd581558d 13
pmallick 0:3afcd581558d 14 /******************************************************************************/
pmallick 0:3afcd581558d 15 /***************************** Include Files **********************************/
pmallick 0:3afcd581558d 16 /******************************************************************************/
pmallick 0:3afcd581558d 17
pmallick 0:3afcd581558d 18 #include <stdint.h>
pmallick 0:3afcd581558d 19 #include "app_config.h"
pmallick 0:3afcd581558d 20 #include "ad7606_support.h"
pmallick 0:3afcd581558d 21 #include "ad7606_data_capture.h"
pmallick 0:3afcd581558d 22
pmallick 0:3afcd581558d 23 /******************************************************************************/
pmallick 0:3afcd581558d 24 /********************** Macros and Constants Definition ***********************/
pmallick 0:3afcd581558d 25 /******************************************************************************/
pmallick 0:3afcd581558d 26
pmallick 0:3afcd581558d 27 /******************************************************************************/
pmallick 0:3afcd581558d 28 /********************** Variables and User Defined Data Types *****************/
pmallick 0:3afcd581558d 29 /******************************************************************************/
pmallick 0:3afcd581558d 30
pmallick 0:3afcd581558d 31 /******************************************************************************/
pmallick 0:3afcd581558d 32 /************************ Functions Definitions *******************************/
pmallick 0:3afcd581558d 33 /******************************************************************************/
pmallick 0:3afcd581558d 34
pmallick 0:3afcd581558d 35 /*!
pmallick 0:3afcd581558d 36 * @brief Function to convert adc raw data into equivalent voltage
pmallick 0:3afcd581558d 37 * @param adc_raw[in] - ADC raw data
pmallick 0:3afcd581558d 38 * @param scale[in] - ADC raw to voltage conversion scale
pmallick 0:3afcd581558d 39 * @return equivalent voltage
pmallick 0:3afcd581558d 40 */
pmallick 0:3afcd581558d 41 float convert_adc_raw_to_voltage(int32_t adc_raw, float scale)
pmallick 0:3afcd581558d 42 {
pmallick 0:3afcd581558d 43 float voltage;
pmallick 0:3afcd581558d 44
pmallick 0:3afcd581558d 45 /* Convert adc data into equivalent voltage.
pmallick 0:3afcd581558d 46 * scale = (chn_range / MAX_ADC_CNT * 1000) as defined in iio_ad7606.c
pmallick 0:3afcd581558d 47 * */
pmallick 0:3afcd581558d 48 voltage = (adc_raw * (scale / 1000));
pmallick 0:3afcd581558d 49
pmallick 0:3afcd581558d 50 return voltage;
pmallick 0:3afcd581558d 51 }
pmallick 0:3afcd581558d 52
pmallick 0:3afcd581558d 53
pmallick 0:3afcd581558d 54 /*!
pmallick 0:3afcd581558d 55 * @brief Function to get the polarity of analog input
pmallick 0:3afcd581558d 56 * @param chn_range_bits[in] - Bits from the channel range register
pmallick 0:3afcd581558d 57 * @return UNIPOLAR or BIPOLAR
pmallick 0:3afcd581558d 58 */
pmallick 0:3afcd581558d 59 polarity_e ad7606_get_input_polarity(uint8_t chn_range_bits)
pmallick 0:3afcd581558d 60 {
pmallick 0:3afcd581558d 61 polarity_e polarity;
pmallick 0:3afcd581558d 62
pmallick 0:3afcd581558d 63 if (chn_range_bits >= AD7606C_UNIPOLAR_RANGE_MIN
pmallick 0:3afcd581558d 64 && chn_range_bits <= AD7606C_UNIPOLAR_RANGE_MAX) {
pmallick 0:3afcd581558d 65 polarity = UNIPOLAR;
pmallick 0:3afcd581558d 66 } else {
pmallick 0:3afcd581558d 67 polarity = BIPOLAR;
pmallick 0:3afcd581558d 68 }
pmallick 0:3afcd581558d 69
pmallick 0:3afcd581558d 70 return polarity;
pmallick 0:3afcd581558d 71 }
pmallick 0:3afcd581558d 72
pmallick 0:3afcd581558d 73
pmallick 0:3afcd581558d 74 /*!
pmallick 0:3afcd581558d 75 * @brief Read the num_of_bytes from previous conversion
pmallick 0:3afcd581558d 76 * @param dev[in]- Device instance
pmallick 0:3afcd581558d 77 * @param num_of_bytes[in] - Number of bytes to read from previous conversion
pmallick 0:3afcd581558d 78 * @return SUCCESS in case of success, FAILURE otherwise
pmallick 0:3afcd581558d 79 */
pmallick 0:3afcd581558d 80 int32_t ad7606_read_conversion_data(struct ad7606_dev *dev,
pmallick 0:3afcd581558d 81 uint8_t num_of_bytes)
pmallick 0:3afcd581558d 82 {
pmallick 0:3afcd581558d 83 memset(dev->data, 0, sizeof(dev->data));
pmallick 0:3afcd581558d 84 return spi_write_and_read(dev->spi_desc, dev->data, num_of_bytes);
pmallick 0:3afcd581558d 85 }