ad405x.h

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/*******************************************************************************
 *   @file   ad405x.h
 *   @brief  Header file of AD405X Driver.
 *   @author George Mois (george.mois@analog.com)
 *   @author Ribhu Das Purkayastha (ribhu.daspurkayastha@analog.com)
********************************************************************************
 * Copyright 2024(c) Analog Devices, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of Analog Devices, Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/
 
#ifndef __AD405X_H__
#define __AD405X_H__
 
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
 
#include <stdint.h>
#include <string.h>
#include "no_os_util.h"
#include "no_os_spi.h"
#include "no_os_gpio.h"
 
/******************************************************************************/
/********************** Macros and Constants Definitions **********************/
/******************************************************************************/
 
#define AD405X_REG_INTERFACE_CONFIG_A       0x00
#define AD405X_REG_INTERFACE_CONFIG_B       0x01
#define AD405X_REG_DEVICE_CONFIG        0x02
#define AD405X_REG_DEVICE_TYPE          0x03
#define AD405X_REG_PRODUCT_ID_L         0x04
#define AD405X_REG_PRODUCT_ID_H         0x05
#define AD405X_REG_CHIP_GRADE           0x06
#define AD405X_REG_SCRATCH_PAD          0x0A
#define AD405X_REG_SPI_REVISION         0x0B
#define AD405X_REG_VENDOR_L         0x0C
#define AD405X_REG_VENDOR_H         0x0D
#define AD405X_REG_STREAM_MODE          0x0E
#define AD405X_REG_TRANSFER_CONFIG      0x0F
#define AD405X_REG_INTERFACE_CONFIG_C       0x10
#define AD405X_REG_INTERFACE_STATUS     0x11
#define AD405X_REG_MODE_SET         0x20
#define AD405X_REG_ADC_MODES            0x21
#define AD405X_REG_ADC_CONFIG           0x22
#define AD405X_REG_AVG_CONFIG           0x23
#define AD405X_REG_GPIO_CONFIG          0x24
#define AD405X_REG_INTR_CONFIG          0x25
#define AD405X_REG_CHOP_CONFIG          0x26
#define AD405X_REG_TIMER_CONFIG         0x27
#define AD405X_REG_MAX_THRESH           0x28
#define AD405X_REG_MIN_THRESH           0x2A
#define AD405X_REG_MAX_HYST         0x2C
#define AD405X_REG_MIN_HYST         0x2D
#define AD405X_REG_MON_VAL          0x2E
#define AD405X_REG_FUSE_CRC         0x40
#define AD405X_REG_DEVICE_STATUS        0x41
#define AD405X_REG_MAX_INTR         0x42
#define AD405X_REG_MIN_INTR         0x44
 
#define AD405X_SW_RESET_MSK         NO_OS_BIT(7) | NO_OS_BIT(0)
 
#define AD405X_SINGLE_INST_MSK          NO_OS_BIT(7) /* Should be set to 0. */
#define AD405X_SHORT_INST_MSK           NO_OS_BIT(3)
 
#define AD405X_STRICT_REG_ACCESS_MSK        NO_OS_BIT(5)
 
#define AD405X_ADC_DATA_FORMAT_MSK      NO_OS_BIT(7)
#define AD405X_ADC_MODES_MSK            NO_OS_GENMASK(1, 0)
#define AD405X_SAMPLE_MODE              0x00
#define AD405X_BURST_AVERAGING_MODE     NO_OS_BIT(0)
#define AD405X_AVERAGING_MODE           NO_OS_BIT(1)
#define AD405X_AUTONOMOUS_MODE          NO_OS_GENMASK(1, 0)
 
#define AD405X_ENTER_ADC_MODE_MSK       NO_OS_BIT(0)
#define AD405X_ENTER_ADC_MODE           NO_OS_BIT(0)
 
#define AD405X_FS_BURST_AUTO_MSK        NO_OS_GENMASK(7, 4)
 
#define AD405X_AVG_WIN_LEN_MSK          NO_OS_GENMASK(3, 0)
 
#define AD405X_DEV_EN_POL_MSK               NO_OS_BIT(7)
#define AD405X_GP1_MODE_MSK             NO_OS_GENMASK(6, 4)
#define AD405X_INVERT_ON_CHOP_MSK           NO_OS_BIT(3)
#define AD405X_GP0_MODE_MSK             NO_OS_GENMASK(2, 0)
 
#define AD405X_DEV_EN_POL_LOW               ~NO_OS_BIT(7)
#define AD405X_DEV_EN_POL_HIGH              NO_OS_BIT(7)
 
#define AD405X_INVERT_ON_CHOP_OFF           ~NO_OS_BIT(3)
#define AD405X_INVERT_ON_CHOP_ON            NO_OS_BIT(3)
 
#define AD405X_SW_RESET             NO_OS_BIT(7) | NO_OS_BIT(0)
#define AD405X_SPI_READ                 NO_OS_BIT(7)
#define BYTE_ADDR_H             NO_OS_GENMASK(15, 8)
#define BYTE_ADDR_L             NO_OS_GENMASK(7, 0)
#define AD405X_DEVICE_TYPE          NO_OS_GENMASK(2, 0)
 
/******************************************************************************/
/************************ Types Declarations **********************************/
/******************************************************************************/
 
enum ad405x_operation_mode {
    AD405X_CONFIG_MODE_OP,
    AD405X_ADC_MODE_OP,
    AD405X_AVERAGING_MODE_OP,
    AD405X_BURST_AVERAGING_MODE_OP,
    AD405X_PERSISTENT_AUTO_MODE_OP,
    AD405X_NON_PERSISTENT_AUTO_MODE_OP
};
 
enum ad405x_sample_rate {
    AD405X_2_MSPS,
    AD405X_1_MSPS,
    AD405X_333_KSPS,
    AD405X_100_KSPS,
    AD405X_33_KSPS,
    AD405X_10_KSPS,
    AD405X_3_KSPS,
    AD405X_1_KSPS,
    AD405X_500_SPS,
    AD405X_333_SPS,
    AD405X_250_SPS,
    AD405X_200_SPS,
    AD405X_166_SPS,
    AD405X_140_SPS,
    AD405X_125_SPS,
    AD405X_111_SPS
};
 
enum ad405x_avg_filter_l {
    AD405X_LENGTH_2,
    AD405X_LENGTH_4,
    AD405X_LENGTH_8,
    AD405X_LENGTH_16,
    AD405X_LENGTH_32,
    AD405X_LENGTH_64,
    AD405X_LENGTH_128,
    AD405X_LENGTH_256,
    AD405X_LENGTH_512,
    AD405X_LENGTH_1024,
    AD405X_LENGTH_2048,
    AD405X_LENGTH_4096
};
 
enum ad405x_dev_en_polarity {
    AD405X_DEV_EN_ACTIVE_LOW,
    AD405X_DEV_EN_ACTIVE_HIGH
};
 
enum ad405x_invert_on_chop {
    AD405X_INVERT_ON_CHOP_DISABLED,
    AD405X_INVERT_ON_CHOP_ENABLED
};
 
enum ad405x_gp_mode {
    AD405X_GP_MODE_HIGH_Z,
    AD405X_GP_MODE_INTR,
    AD405X_GP_MODE_DRDY,
    AD405X_GP_MODE_DEV_EN,
    AD405X_GP_MODE_CHOP,
    AD405X_GP_MODE_LOW,
    AD405X_GP_MODE_HIGH,
    AD405X_GP_MODE_DEV_RDY
};
 
enum ad405x_gp_select {
    AD405X_GP_0,
    AD405X_GP_1
};
 
enum ad405x_out_data_format {
    AD405X_STRAIGHT_BINARY,
    AD405X_TWOS_COMPLEMENT
};
 
enum ad405x_device_type {
    ID_AD4050,
    ID_AD4052
};
 
enum ad405x_product_id {
    PROD_ID_AD4050 = 0x70,
    PROD_ID_AD4052 = 0x72,
};
 
struct ad405x_dev {
    struct no_os_spi_desc   *spi_desc;
    enum ad405x_device_type active_device;
    enum ad405x_operation_mode operation_mode;
    struct no_os_gpio_desc *gpio_cnv;
    struct no_os_gpio_desc *gpio_gpio0;
    struct no_os_gpio_desc *gpio_gpio1;
    enum ad405x_sample_rate rate;
    enum ad405x_avg_filter_l filter_length;
    enum ad405x_dev_en_polarity polarity;
    enum ad405x_gp_mode gp1_mode;
    enum ad405x_invert_on_chop invert_on_chop_status;
    enum ad405x_gp_mode gp0_mode;
    enum ad405x_out_data_format data_format;
};
 
struct ad405x_init_param {
    struct no_os_spi_init_param *spi_init;
    enum ad405x_device_type active_device;
    enum ad405x_operation_mode operation_mode;
    struct no_os_gpio_init_param *gpio_cnv;
    struct no_os_gpio_init_param *gpio_gpio0;
    struct no_os_gpio_init_param *gpio_gpio1;
    enum ad405x_sample_rate rate;
    enum ad405x_avg_filter_l filter_length;
};
 
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
 
int ad405x_write(struct ad405x_dev *dev,
         uint8_t reg_addr,
         uint8_t reg_val);
 
int ad405x_read(struct ad405x_dev *dev,
        uint8_t reg_addr,
        uint8_t *reg_val);
 
int ad405x_update_bits(struct ad405x_dev *dev,
               uint8_t reg_addr,
               uint8_t mask,
               uint8_t reg_val);
 
int ad405x_exit_command(struct ad405x_dev *dev);
 
int ad405x_reset_pattern_command(struct ad405x_dev *dev);
 
int ad405x_soft_reset(struct ad405x_dev *dev);
 
int ad405x_set_adc_mode(struct ad405x_dev *dev);
 
int ad405x_set_burst_averaging_mode(struct ad405x_dev *dev);
 
int ad405x_set_config_mode(struct ad405x_dev *dev);
 
int ad405x_set_operation_mode(struct ad405x_dev *dev,
                  enum ad405x_operation_mode mode);
 
int ad405x_convst(struct ad405x_dev *dev);
 
int ad405x_spi_data_read(struct ad405x_dev *dev,
             int32_t *data);
 
int ad405x_read_val(struct ad405x_dev *dev, int32_t *data);
 
int ad405x_set_sample_rate(struct ad405x_dev *dev,
               enum ad405x_sample_rate rate);
 
int ad405x_set_averaging_filter_length(struct ad405x_dev *dev,
                       enum ad405x_avg_filter_l length);
 
enum ad405x_avg_filter_l ad405x_get_averaging_filter_length(
    struct ad405x_dev *dev);
 
int ad405x_set_dev_en_polarity(struct ad405x_dev *dev,
                   enum ad405x_dev_en_polarity polarity);
 
enum ad405x_dev_en_polarity ad405x_get_dev_en_polarity(struct ad405x_dev *dev);
 
int ad405x_enable_invert_on_chop(struct ad405x_dev *dev);
 
int ad405x_disable_invert_on_chop(struct ad405x_dev *dev);
 
enum ad405x_invert_on_chop ad405x_get_invert_on_chop_state(
    struct ad405x_dev *dev);
 
int ad405x_set_gp_mode(struct ad405x_dev *dev,
               enum ad405x_gp_select gp,
               enum ad405x_gp_mode mode);
 
enum ad405x_gp_mode ad405x_get_gp_mode(
    struct ad405x_dev *dev, enum ad405x_gp_select gp);
 
int ad405x_set_data_format(struct ad405x_dev *dev,
               enum ad405x_out_data_format data_format);
 
int ad405x_init(struct ad405x_dev **device,
        struct ad405x_init_param init_param);
 
int ad405x_remove(struct ad405x_dev *dev);
 
#endif /* __AD405X_H__ */