ad7606_support.h

00001 /***************************************************************************//**
00002  *   @file   ad7606_support.h
00003  *   @brief  Header for AD7606 No-OS driver supports
00004 ********************************************************************************
00005  * Copyright (c) 2020 Analog Devices, Inc.
00006  *
00007  * All rights reserved.
00008  *
00009  * This software is proprietary to Analog Devices, Inc. and its licensors.
00010  * By using this software you agree to the terms of the associated
00011  * Analog Devices Software License Agreement.
00012 *******************************************************************************/
00013 
00014 #ifndef AD7606_SUPPORT_H_
00015 #define AD7606_SUPPORT_H_
00016 
00017 /******************************************************************************/
00018 /***************************** Include Files **********************************/
00019 /******************************************************************************/
00020 
00021 #include "ad7606.h"
00022 
00023 /******************************************************************************/
00024 /********************** Macros and Constants Definition ***********************/
00025 /******************************************************************************/
00026 
00027 /* Offset b/w two channel selections in CHx_RANGE register */
00028 #define CHANNEL_RANGE_MSK_OFFSET    4
00029 
00030 /* AD7606_REG_OVERSAMPLING */
00031 #define AD7606_OVERSAMPLING_MSK     GENMASK(3,0)
00032 
00033 /* Default channel range for AD7606 devices */
00034 #define DEFAULT_CHN_RANGE   (10.0)
00035 
00036 /* Diagnostic channels Mux configurations */
00037 #define AD7606_DIAGN_MUX_CH_MSK(ch)         (GENMASK(2, 0) << (3 * ((ch) % 2)))
00038 #define AD7606_DIAGN_MUX_CH_VAL(ch, val)    (val << (3 * ((ch) % 2)))
00039 
00040 #define AD7606_OPEN_DETECT_ENABLE_MSK(ch)   (GENMASK(7,0) & (~(1 << ch)))
00041 
00042 /* Diagnostic channels Mux select bits */
00043 #define ANALOG_INPUT_MUX    0X00
00044 #define TEMPERATURE_MUX     0x01
00045 #define VREF_MUX            0X02
00046 #define ALDO_MUX            0X03
00047 #define DLDO_MUX            0X04
00048 #define VDRIVE_MUX          0x05
00049 
00050 /* Diagnostic Mux multiplers */
00051 #define VREF_MUX_MULTIPLIER     4.0
00052 
00053 /* Unipolar inputs range bits for AD7606C */
00054 #define AD7606C_UNIPOLAR_RANGE_MIN  5
00055 #define AD7606C_UNIPOLAR_RANGE_MAX  7
00056 
00057 /* Number of AD7606 registers */
00058 #define NUM_OF_REGISTERS    0x2F
00059 
00060 /******************************************************************************/
00061 /********************** Variables and User Defined Data Types *****************/
00062 /******************************************************************************/
00063 
00064 /* Analog input polarity */
00065 typedef enum {
00066     UNIPOLAR,
00067     BIPOLAR
00068 } polarity_e;
00069 
00070 /******************************************************************************/
00071 /************************ Public Declarations *********************************/
00072 /******************************************************************************/
00073 
00074 float convert_adc_raw_to_voltage(int32_t adc_raw, float scale);
00075 int32_t ad7606_read_conversion_data(struct ad7606_dev *dev, uint8_t bytes);
00076 polarity_e ad7606_get_input_polarity(uint8_t chn_range_bits);
00077 
00078 #endif /* AD7606_SUPPORT_H_ */