ad77681.h

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/***************************************************************************/
#ifndef SRC_AD77681_H_
#define SRC_AD77681_H_
 
#include "no_os_spi.h"
#include <stdbool.h>
 
/******************************************************************************/
/********************** Macros and Constants Definitions **********************/
/******************************************************************************/
#define AD77681_REG_CHIP_TYPE                   0x3
#define AD77681_REG_PROD_ID_L                   0x4
#define AD77681_REG_PROD_ID_H                   0x5
#define AD77681_REG_CHIP_GRADE                  0x6
#define AD77681_REG_SCRATCH_PAD                 0x0A
#define AD77681_REG_VENDOR_L                    0x0C
#define AD77681_REG_VENDOR_H                    0x0D
#define AD77681_REG_INTERFACE_FORMAT            0x14
#define AD77681_REG_POWER_CLOCK                 0x15
#define AD77681_REG_ANALOG                      0x16
#define AD77681_REG_ANALOG2                     0x17
#define AD77681_REG_CONVERSION                  0x18
#define AD77681_REG_DIGITAL_FILTER              0x19
#define AD77681_REG_SINC3_DEC_RATE_MSB          0x1A
#define AD77681_REG_SINC3_DEC_RATE_LSB          0x1B
#define AD77681_REG_DUTY_CYCLE_RATIO            0x1C
#define AD77681_REG_SYNC_RESET                  0x1D
#define AD77681_REG_GPIO_CONTROL                0x1E
#define AD77681_REG_GPIO_WRITE                  0x1F
#define AD77681_REG_GPIO_READ                   0x20
#define AD77681_REG_OFFSET_HI                   0x21
#define AD77681_REG_OFFSET_MID                  0x22
#define AD77681_REG_OFFSET_LO                   0x23
#define AD77681_REG_GAIN_HI                     0x24
#define AD77681_REG_GAIN_MID                    0x25
#define AD77681_REG_GAIN_LO                     0x26
#define AD77681_REG_SPI_DIAG_ENABLE             0x28
#define AD77681_REG_ADC_DIAG_ENABLE             0x29
#define AD77681_REG_DIG_DIAG_ENABLE             0x2A
#define AD77681_REG_ADC_DATA                    0x2C
#define AD77681_REG_MASTER_STATUS               0x2D
#define AD77681_REG_SPI_DIAG_STATUS             0x2E
#define AD77681_REG_ADC_DIAG_STATUS             0x2F
#define AD77681_REG_DIG_DIAG_STATUS             0x30
#define AD77681_REG_MCLK_COUNTER                0x31
 
/* AD77681_REG_INTERFACE_FORMAT */
#define AD77681_INTERFACE_CRC_EN_MSK            (0x1 << 6)
#define AD77681_INTERFACE_CRC_EN(x)             (((x) & 0x1) << 6)
#define AD77681_INTERFACE_CRC_TYPE_MSK          (0x1 << 5)
#define AD77681_INTERFACE_CRC_TYPE(x)           (((x) & 0x1) << 5)
#define AD77681_INTERFACE_STATUS_EN_MSK         (0x1 << 4)
#define AD77681_INTERFACE_STATUS_EN(x)          (((x) & 0x1) << 4)
#define AD77681_INTERFACE_CONVLEN_MSK           (0x1 << 3)
#define AD77681_INTERFACE_CONVLEN(x)            (((x) & 0x1) << 3)
#define AD77681_INTERFACE_RDY_EN_MSK            (0x1 << 2)
#define AD77681_INTERFACE_RDY_EN(x)             (((x) & 0x1) << 3)
#define AD77681_INTERFACE_CONT_READ_MSK         (0x1 << 0)
#define AD77681_INTERFACE_CONT_READ_EN(x)       (((x) & 0x1) << 0)
#define AD77681_REG_COEFF_CONTROL               0x32
#define AD77681_REG_COEFF_DATA                  0x33
#define AD77681_REG_ACCESS_KEY                  0x34
 
/* AD77681_REG_SCRATCH_PAD*/
#define AD77681_SCRATCHPAD_MSK                  (0xFF << 0)
#define AD77681_SCRATCHPAD(x)                   (((x) & 0xFF) << 0)
 
/* AD77681_REG_POWER_CLOCK */
#define AD77681_POWER_CLK_PWRMODE_MSK           0x3
#define AD77681_POWER_CLK_PWRMODE(x)            (((x) & 0x3) << 0)
#define AD77681_POWER_CLK_MOD_OUT_MSK           (0x1 << 2)
#define AD77681_POWER_CLK_MOD_OUT(x)            (((x) & 0x1) << 2)
#define AD77681_POWER_CLK_POWER_DOWN            0x08
#define AD77681_POWER_CLK_MCLK_DIV_MSK          (0x3 << 4)
#define AD77681_POWER_CLK_MCLK_DIV(x)           (((x) & 0x3) << 4)
#define AD77681_POWER_CLK_CLOCK_SEL_MSK         (0x3 << 6)
#define AD77681_POWER_CLK_CLOCK_SEL(x)          (((x) & 0x3) << 6)
 
/* AD77681_CONVERSION_REG */
#define AD77681_CONVERSION_DIAG_MUX_MSK         (0xF << 4)
#define AD77681_CONVERSION_DIAG_MUX_SEL(x)      (((x) & 0xF) << 4)
#define AD77681_CONVERSION_DIAG_SEL_MSK         (0x1 << 3)
#define AD77681_CONVERSION_DIAG_SEL(x)          (((x) & 0x1) << 3)
#define AD77681_CONVERSION_MODE_MSK             (0x7 << 0)
#define AD77681_CONVERSION_MODE(x)              (((x) & 0x7) << 0)
 
/* AD77681_REG_ANALOG */
#define AD77681_ANALOG_REF_BUF_POS_MSK          (0x3 << 6)
#define AD77681_ANALOG_REF_BUF_POS(x)           (((x) & 0x3) << 6)
#define AD77681_ANALOG_REF_BUF_NEG_MSK          (0x3 << 4)
#define AD77681_ANALOG_REF_BUF_NEG(x)           (((x) & 0x3) << 4)
#define AD77681_ANALOG_AIN_BUF_POS_OFF_MSK      (0x1 << 1)
#define AD77681_ANALOG_AIN_BUF_POS_OFF(x)       (((x) & 0x1) << 1)
#define AD77681_ANALOG_AIN_BUF_NEG_OFF_MSK      (0x1 << 0)
#define AD77681_ANALOG_AIN_BUF_NEG_OFF(x)       (((x) & 0x1) << 0)
 
/* AD77681_REG_ANALOG2 */
#define AD77681_ANALOG2_VCM_MSK                 (0x7 << 0)
#define AD77681_ANALOG2_VCM(x)                  (((x) & 0x7) << 0)
 
/* AD77681_REG_DIGITAL_FILTER */
#define AD77681_DIGI_FILTER_60HZ_REJ_EN_MSK     (0x1 << 7)
#define AD77681_DIGI_FILTER_60HZ_REJ_EN(x)      (((x) & 0x1) << 7)
#define AD77681_DIGI_FILTER_FILTER_MSK          (0x7 << 4)
#define AD77681_DIGI_FILTER_FILTER(x)           (((x) & 0x7) << 4)
#define AD77681_DIGI_FILTER_DEC_RATE_MSK        (0x7 << 0)
#define AD77681_DIGI_FILTER_DEC_RATE(x)         (((x) & 0x7) << 0)
 
/* AD77681_REG_SINC3_DEC_RATE_MSB */
#define AD77681_SINC3_DEC_RATE_MSB_MSK          (0x0F << 0)
#define AD77681_SINC3_DEC_RATE_MSB(x)           (((x) & 0x0F) << 0)
 
/* AD77681_REG_SINC3_DEC_RATE_LSB */
#define AD77681_SINC3_DEC_RATE_LSB_MSK          (0xFF << 0)
#define AD77681_SINC3_DEC_RATE_LSB(x)           (((x) & 0xFF) << 0)
 
/* AD77681_REG_DUTY_CYCLE_RATIO */
#define AD77681_DC_RATIO_IDLE_TIME_MSK          (0xFF << 0)
#define AD77681_DC_RATIO_IDLE_TIME(x)           (((x) & 0xFF) << 0)
 
/* AD77681_REG_SYNC_RESET */
#define AD77681_SYNC_RST_SPI_STARTB_MSK         (0x1 << 7)
#define AD77681_SYNC_RST_SPI_STARTB(x)          (((x) & 0x1) << 7)
#define AD77681_SYNC_RST_SYNCOUT_EDGE_MSK       (0x1 << 6)
#define AD77681_SYNC_RST_SYNCOUT_EDGE(x)        (((x) & 0x1) << 6)
#define AD77681_SYNC_RST_GPIO_START_EN_MSK      (0x1 << 3)
#define AD77681_SYNC_RST_GPIO_START_EN(x)       (((x) & 0x1) << 3)
#define AD77681_SYNC_RST_SPI_RESET_MSK          (0x3 << 0)
#define AD77681_SYNC_RST_SPI_RESET(x)           (((x) & 0x3) << 0)
 
/* AD77681_REG_GPIO_CONTROL */
#define AD77681_GPIO_CNTRL_UGPIO_EN_MSK         (0x1 << 7)
#define AD77681_GPIO_CNTRL_UGPIO_EN(x)          (((x) & 0x1) << 7)
#define AD77681_GPIO_CNTRL_GPIO2_OD_EN_MSK      (0x1 << 6)
#define AD77681_GPIO_CNTRL_GPIO2_OD_EN(x)       (((x) & 0x1) << 6)
#define AD77681_GPIO_CNTRL_GPIO1_OD_EN_MSK      (0x1 << 5)
#define AD77681_GPIO_CNTRL_GPIO1_OD_EN(x)       (((x) & 0x1) << 5)
#define AD77681_GPIO_CNTRL_GPIO0_OD_EN_MSK      (0x1 << 4)
#define AD77681_GPIO_CNTRL_GPIO0_OD_EN(x)       (((x) & 0x1) << 4)
#define AD77681_GPIO_CNTRL_ALL_GPIOS_OD_EN_MSK  (0x7 << 4)
#define AD77681_GPIO_CNTRL_ALL_GPIOS_OD_EN(x)   (((x) & 0x7) << 4)
#define AD77681_GPIO_CNTRL_GPIO3_OP_EN_MSK      (0x1 << 3)
#define AD77681_GPIO_CNTRL_GPIO3_OP_EN(x)       (((x) & 0x1) << 3)
#define AD77681_GPIO_CNTRL_GPIO2_OP_EN_MSK      (0x1 << 2)
#define AD77681_GPIO_CNTRL_GPIO2_OP_EN(x)       (((x) & 0x1) << 2)
#define AD77681_GPIO_CNTRL_GPIO1_OP_EN_MSK      (0x1 << 1)
#define AD77681_GPIO_CNTRL_GPIO1_OP_EN(x)       (((x) & 0x1) << 1)
#define AD77681_GPIO_CNTRL_GPIO0_OP_EN_MSK      (0x1 << 0)
#define AD77681_GPIO_CNTRL_GPIO0_OP_EN(x)       (((x) & 0x1) << 0)
#define AD77681_GPIO_CNTRL_ALL_GPIOS_OP_EN_MSK  (0xF << 0)
#define AD77681_GPIO_CNTRL_ALL_GPIOS_OP_EN(x)   (((x) & 0xF) << 0)
 
/* AD77681_REG_GPIO_WRITE */
#define AD77681_GPIO_WRITE_3_MSK                (0x1 << 3)
#define AD77681_GPIO_WRITE_3(x)                 (((x) & 0x1) << 3)
#define AD77681_GPIO_WRITE_2_MSK                (0x1 << 2)
#define AD77681_GPIO_WRITE_2(x)                 (((x) & 0x1) << 2)
#define AD77681_GPIO_WRITE_1_MSK                (0x1 << 1)
#define AD77681_GPIO_WRITE_1(x)                 (((x) & 0x1) << 1)
#define AD77681_GPIO_WRITE_0_MSK                (0x1 << 0)
#define AD77681_GPIO_WRITE_0(x)                 (((x) & 0x1) << 0)
#define AD77681_GPIO_WRITE_ALL_MSK              (0xF << 0)
#define AD77681_GPIO_WRITE_ALL(x)               (((x) & 0xF))
 
/* AD77681_REG_GPIO_READ */
#define AD77681_GPIO_READ_3_MSK                 (0x1 << 3)
#define AD77681_GPIO_READ_2_MSK                 (0x1 << 2)
#define AD77681_GPIO_READ_1_MSK                 (0x1 << 1)
#define AD77681_GPIO_READ_0_MSK                 (0x1 << 0)
#define AD77681_GPIO_READ_ALL_MSK               (0xF << 0)
 
/* AD77681_REG_OFFSET_HI */
#define AD77681_OFFSET_HI_MSK                   (0xFF << 0)
#define AD77681_OFFSET_HI(x)                    (((x) & 0xFF) << 0)
 
/* AD77681_REG_OFFSET_MID */
#define AD77681_OFFSET_MID_MSK                  (0xFF << 0)
#define AD77681_OFFSET_MID(x)                   (((x) & 0xFF) << 0)
 
/* AD77681_REG_OFFSET_LO */
#define AD77681_OFFSET_LO_MSK                   (0xFF << 0)
#define AD77681_OFFSET_LO(x)                    (((x) & 0xFF) << 0)
 
/* AD77681_REG_GAIN_HI */
#define AD77681_GAIN_HI_MSK                     (0xFF << 0)
#define AD77681_GAIN_HI(x)                      (((x) & 0xFF) << 0)
 
/* AD77681_REG_GAIN_MID */
#define AD77681_GAIN_MID_MSK                    (0xFF << 0)
#define AD77681_GAIN_MID(x)                     (((x) & 0xFF) << 0)
 
/* AD77681_REG_GAIN_HI */
#define AD77681_GAIN_LOW_MSK                    (0xFF << 0)
#define AD77681_GAIN_LOW(x)                     (((x) & 0xFF) << 0)
 
/* AD77681_REG_SPI_DIAG_ENABLE */
#define AD77681_SPI_DIAG_ERR_SPI_IGNORE_MSK     (0x1 << 4)
#define AD77681_SPI_DIAG_ERR_SPI_IGNORE(x)      (((x) & 0x1) << 4)
#define AD77681_SPI_DIAG_ERR_SPI_CLK_CNT_MSK    (0x1 << 3)
#define AD77681_SPI_DIAG_ERR_SPI_CLK_CNT(x)     (((x) & 0x1) << 3)
#define AD77681_SPI_DIAG_ERR_SPI_RD_MSK         (0x1 << 2)
#define AD77681_SPI_DIAG_ERR_SPI_RD(x)          (((x) & 0x1) << 2)
#define AD77681_SPI_DIAG_ERR_SPI_WR_MSK         (0x1 << 1)
#define AD77681_SPI_DIAG_ERR_SPI_WR(x)          (((x) & 0x1) << 1)
 
/* AD77681_REG_ADC_DIAG_ENABLE */
#define AD77681_ADC_DIAG_ERR_DLDO_PSM_MSK       (0x1 << 5)
#define AD77681_ADC_DIAG_ERR_DLDO_PSM(x)        (((x) & 0x1) << 5)
#define AD77681_ADC_DIAG_ERR_ALDO_PSM_MSK       (0x1 << 4)
#define AD77681_ADC_DIAG_ERR_ALDO_PSM(x)        (((x) & 0x1) << 4)
#define AD77681_ADC_DIAG_ERR_FILT_SAT_MSK       (0x1 << 2)
#define AD77681_ADC_DIAG_ERR_FILT_SAT(x)            (((x) & 0x1) << 2)
#define AD77681_ADC_DIAG_ERR_FILT_NOT_SET_MSK   (0x1 << 1)
#define AD77681_ADC_DIAG_ERR_FILT_NOT_SET(x)        (((x) & 0x1) << 1)
#define AD77681_ADC_DIAG_ERR_EXT_CLK_QUAL_MSK   (0x1 << 0)
#define AD77681_ADC_DIAG_ERR_EXT_CLK_QUAL(x)    (((x) & 0x1) << 0)
 
/* AD77681_REG_DIG_DIAG_ENABLE */
#define AD77681_DIG_DIAG_ERR_MEMMAP_CRC_MSK     (0x1 << 4)
#define AD77681_DIG_DIAG_ERR_MEMMAP_CRC(x)      (((x) & 0x1) << 4)
#define AD77681_DIG_DIAG_ERR_RAM_CRC_MSK        (0x1 << 3)
#define AD77681_DIG_DIAG_ERR_RAM_CRC(x)         (((x) & 0x1) << 3)
#define AD77681_DIG_DIAG_ERR_FUSE_CRC_MSK       (0x1 << 2)
#define AD77681_DIG_DIAG_ERR_FUSE_CRC(x)        (((x) & 0x1) << 2)
#define AD77681_DIG_DIAG_FREQ_COUNT_EN_MSK      (0x1 << 0)
#define AD77681_DIG_DIAG_FREQ_COUNT_EN(x)       (((x) & 0x1) << 0)
 
/* AD77681_REG_MASTER_STATUS */
#define AD77681_MASTER_ERROR_MSK                (0x1 << 7)
#define AD77681_MASTER_ADC_ERROR_MSK            (0x1 << 6)
#define AD77681_MASTER_DIG_ERROR_MSK            (0x1 << 5)
#define AD77681_MASTER_DIG_ERR_EXT_CLK_MSK      (0x1 << 4)
#define AD77681_MASTER_FILT_SAT_MSK             (0x1 << 3)
#define AD77681_MASTER_FILT_NOT_SET_MSK         (0x1 << 2)
#define AD77681_MASTER_SPI_ERROR_MSK            (0x1 << 1)
#define AD77681_MASTER_POR_FLAG_MSK             (0x1 << 0)
 
/* AD77681_REG_SPI_DIAG_STATUS */
#define AD77681_SPI_IGNORE_ERROR_MSK            (0x1 << 4)
#define AD77681_SPI_IGNORE_ERROR_CLR(x)         (((x) & 0x1) << 4)
#define AD77681_SPI_CLK_CNT_ERROR_MSK           (0x1 << 3)
#define AD77681_SPI_READ_ERROR_MSK              (0x1 << 2)
#define AD77681_SPI_READ_ERROR_CLR(x)           (((x) & 0x1) << 2)
#define AD77681_SPI_WRITE_ERROR_MSK             (0x1 << 1)
#define AD77681_SPI_WRITE_ERROR_CLR(x)          (((x) & 0x1) << 1)
#define AD77681_SPI_CRC_ERROR_MSK               (0x1 << 0)
#define AD77681_SPI_CRC_ERROR_CLR(x)            (((x) & 0x1) << 0)
 
/* AD77681_REG_ADC_DIAG_STATUS */
#define AD77681_ADC_DLDO_PSM_ERROR_MSK          (0x1 << 5)
#define AD77681_ADC_ALDO_PSM_ERROR_MSK          (0x1 << 4)
#define AD77681_ADC_REF_DET_ERROR_MSK           (0x1 << 3)
#define AD77681_ADC_FILT_SAT_MSK                (0x1 << 2)
#define AD77681_ADC_FILT_NOT_SET_MSK            (0x1 << 1)
#define AD77681_ADC_DIG_ERR_EXT_CLK_MSK         (0x1 << 0)
 
/* AD77681_REG_DIG_DIAG_STATUS */
#define AD77681_DIG_MEMMAP_CRC_ERROR_MSK        (0x1 << 4)
#define AD77681_DIG_RAM_CRC_ERROR_MSK           (0x1 << 3)
#define AD77681_DIG_FUS_CRC_ERROR_MSK           (0x1 << 2)
 
/* AD77681_REG_MCLK_COUNTER */
#define AD77681_MCLK_COUNTER_MSK                (0xFF << 0)
#define AD77681_MCLK_COUNTER(x)                 (((x) & 0xFF) << 0)
 
/* AD77681_REG_COEFF_CONTROL */
#define AD77681_COEF_CONTROL_COEFFACCESSEN_MSK  (0x1 << 7)
#define AD77681_COEF_CONTROL_COEFFACCESSEN(x)   (((x) & 0x1) << 7)
#define AD77681_COEF_CONTROL_COEFFWRITEEN_MSK   (0x1 << 6)
#define AD77681_COEF_CONTROL_COEFFWRITEEN(x)    (((x) & 0x1) << 6)
#define AD77681_COEF_CONTROL_COEFFADDR_MSK      (0x3F << 5)
#define AD77681_COEF_CONTROL_COEFFADDR(x)       (((x) & 0x3F) << 5)
 
/* AD77681_REG_COEFF_DATA */
#define AD77681_COEFF_DATA_USERCOEFFEN_MSK      (0x1 << 23)
#define AD77681_COEFF_DATA_USERCOEFFEN(x)       (((x) & 0x1) << 23)
#define AD77681_COEFF_DATA_COEFFDATA_MSK        (0x7FFFFF << 22)
#define AD77681_COEFF_DATA_COEFFDATA(x)         (((x) & 0x7FFFFF) << 22)
 
/* AD77681_REG_ACCESS_KEY */
#define AD77681_ACCESS_KEY_MSK                  (0xFF << 0)
#define AD77681_ACCESS_KEY(x)                   (((x) & 0xFF) << 0)
#define AD77681_ACCESS_KEY_CHECK_MSK            (0x1 << 0)
 
#define AD77681_REG_READ(x)                     ( (1 << 6) | (x & 0xFF) )       // Read from register x
#define AD77681_REG_WRITE(x)                    ( (~(1 << 6)) & (x & 0xFF) )    // Write to register x
 
/* 8-bits wide checksum generated using the polynomial */
#define AD77681_CRC8_POLY   0x07 // x^8 + x^2 + x^1 + x^0
 
/* Initial CRC for continuous read mode */
#define INITIAL_CRC_CRC8                        0x03
#define INITIAL_CRC_XOR                         0x6C
#define INITIAL_CRC                             0x00
 
#define CRC_DEBUG
 
/* AD7768-1 */
/* A special key for exit the contiuous read mode, taken from the AD7768-1 datasheet */
#define EXIT_CONT_READ                          0x6C
/* Bit resolution of the AD7768-1 */
#define AD7768_N_BITS                           24
/* Full scale of the AD7768-1 = 2^24 = 16777216 */
#define AD7768_FULL_SCALE                       (1 << AD7768_N_BITS)
/* Half scale of the AD7768-1 = 2^23 = 8388608 */
#define AD7768_HALF_SCALE                       (1 << (AD7768_N_BITS - 1))
 
#define ENABLE      1
#define DISABLE     0
 
/*****************************************************************************/
/*************************** Types Declarations *******************************/
/******************************************************************************/
enum ad77681_power_mode {
    AD77681_ECO = 0,
    AD77681_MEDIAN = 2,
    AD77681_FAST = 3,
};
 
enum ad77681_mclk_div {
    AD77681_MCLK_DIV_16 = 0,
    AD77681_MCLK_DIV_8 = 1,
    AD77681_MCLK_DIV_4 = 2,
    AD77681_MCLK_DIV_2 = 3
};
 
enum ad77681_conv_mode {
    AD77681_CONV_CONTINUOUS = 0,
    AD77681_CONV_ONE_SHOT = 1,
    AD77681_CONV_SINGLE = 2,
    AD77681_CONV_PERIODIC = 3,
    AD77681_CONV_STANDBY = 4
};
 
enum ad77681_conv_len {
    AD77681_CONV_24BIT = 0,
    AD77681_CONV_16BIT = 1
};
 
enum ad77681_rdy_dout {
    AD77681_RDY_DOUT_EN,
    AD77681_RDY_DOUT_DIS
};
 
enum ad77681_conv_diag_mux {
    AD77681_TEMP_SENSOR = 0x0,
    AD77681_AIN_SHORT = 0x8,
    AD77681_POSITIVE_FS = 0x9,
    AD77681_NEGATIVE_FS = 0xA
};
 
enum ad77681_crc_sel {
    AD77681_CRC,
    AD77681_XOR,
    AD77681_NO_CRC
};
 
/* Filter tye FIR, SINC3, SINC5 */
enum ad77681_filter_type {
    AD77681_SINC5           = 0,
    AD77681_SINC5_DECx8     = 1,
    AD77681_SINC5_DECx16    = 2,
    AD77681_SINC3           = 3,
    AD77681_FIR             = 4
};
 
/* Dectimation ratios for SINC5 and FIR */
enum ad77681_sinc5_fir_decimate {
    AD77681_SINC5_FIR_DECx32    = 0,
    AD77681_SINC5_FIR_DECx64    = 1,
    AD77681_SINC5_FIR_DECx128   = 2,
    AD77681_SINC5_FIR_DECx256   = 3,
    AD77681_SINC5_FIR_DECx512   = 4,
    AD77681_SINC5_FIR_DECx1024  = 5
};
 
/* Sleep / Power up */
enum ad77681_sleep_wake {
    AD77681_SLEEP   = 1,
    AD77681_WAKE = 0
};
 
/* Reset option */
enum ad7761_reset_option {
    AD77681_SOFT_RESET,
    AD77681_HARD_RESET
};
/* AIN- precharge */
enum ad77681_AINn_precharge {
    AD77681_AINn_ENABLED   = 0,
    AD77681_AINn_DISABLED  = 1
};
 
/* AIN+ precharge */
enum ad77681_AINp_precharge {
    AD77681_AINp_ENABLED  = 0,
    AD77681_AINp_DISABLED = 1
};
 
/* REF- buffer */
enum ad77681_REFn_buffer {
    AD77681_BUFn_ENABLED        = 0,
    AD77681_BUFn_DISABLED       = 1,
    AD77681_BUFn_FULL_BUFFER_ON = 2
};
 
/* REF+ buffer */
enum ad77681_REFp_buffer {
    AD77681_BUFp_ENABLED        = 0,
    AD77681_BUFp_DISABLED       = 1,
    AD77681_BUFp_FULL_BUFFER_ON = 2
};
 
/* VCM output voltage */
enum ad77681_VCM_out {
    AD77681_VCM_HALF_VCC    = 0,
    AD77681_VCM_2_5V        = 1,
    AD77681_VCM_2_05V       = 2,
    AD77681_VCM_1_9V        = 3,
    AD77681_VCM_1_65V       = 4,
    AD77681_VCM_1_1V        = 5,
    AD77681_VCM_0_9V        = 6,
    AD77681_VCM_OFF         = 7
};
 
/* Global GPIO enable/disable */
enum ad77681_gobal_gpio_enable {
    AD77681_GLOBAL_GPIO_ENABLE      = 1,
    AD77681_GLOBAL_GPIO_DISABLE     = 0
};
 
/* ADCs GPIO numbering */
enum ad77681_gpios {
    AD77681_GPIO0                   = 0,
    AD77681_GPIO1                   = 1,
    AD77681_GPIO2                   = 2,
    AD77681_GPIO3                   = 3,
    AD77681_ALL_GPIOS               = 4
};
 
enum ad77681_gpio_output_type {
    AD77681_GPIO_STRONG_DRIVER      = 0,
    AD77681_GPIO_OPEN_DRAIN         = 1
};
 
/* Continuous ADC read */
enum ad77681_continuous_read {
    AD77681_CONTINUOUS_READ_ENABLE = 1,
    AD77681_CONTINUOUS_READ_DISABLE = 0,
};
 
/* ADC data read mode */
enum ad77681_data_read_mode {
    AD77681_REGISTER_DATA_READ = 0,
    AD77681_CONTINUOUS_DATA_READ = 1,
};
 
/* ADC data structure */
struct adc_data {
    bool        finish;
    uint16_t    count;
    uint16_t    samples;
    uint32_t    raw_data[4096];
};
/* ADC status registers structure */
struct ad77681_status_registers {
    bool                            master_error;
    bool                            adc_error;
    bool                            dig_error;
    bool                            adc_err_ext_clk_qual;
    bool                            adc_filt_saturated;
    bool                            adc_filt_not_settled;
    bool                            spi_error;
    bool                            por_flag;
    bool                            spi_ignore;
    bool                            spi_clock_count;
    bool                            spi_read_error;
    bool                            spi_write_error;
    bool                            spi_crc_error;
    bool                            dldo_psm_error;
    bool                            aldo_psm_error;
    bool                            ref_det_error;
    bool                            filt_sat_error;
    bool                            filt_not_set_error;
    bool                            ext_clk_qual_error;
    bool                            memoy_map_crc_error;
    bool                            ram_crc_error;
    bool                            fuse_crc_error;
};
 
struct ad77681_dev {
    /* SPI */
    struct no_os_spi_desc           *spi_desc;
    /* Configuration */
    enum ad77681_power_mode     power_mode;
    enum ad77681_mclk_div       mclk_div;
    enum ad77681_conv_mode      conv_mode;
    enum ad77681_conv_diag_mux  diag_mux_sel;
    bool                    conv_diag_sel;
    enum ad77681_conv_len       conv_len;
    enum ad77681_crc_sel        crc_sel;
    uint8_t                 status_bit;
    enum ad77681_VCM_out            VCM_out;
    enum ad77681_AINn_precharge     AINn;
    enum ad77681_AINp_precharge     AINp;
    enum ad77681_REFn_buffer        REFn;
    enum ad77681_REFp_buffer        REFp;
    enum ad77681_filter_type        filter;
    enum ad77681_sinc5_fir_decimate decimate;
    uint16_t                        sinc3_osr;
    uint16_t                        vref;               /* Reference voltage*/
    uint16_t                        mclk;               /* Mater clock*/
    uint32_t                        sample_rate;        /* Sample rate*/
    uint8_t                         data_frame_byte;    /* SPI 8bit frames*/
};
 
struct ad77681_init_param {
    /* SPI */
    struct no_os_spi_init_param         spi_eng_dev_init;
    /* Configuration */
    enum ad77681_power_mode     power_mode;
    enum ad77681_mclk_div       mclk_div;
    enum ad77681_conv_mode      conv_mode;
    enum ad77681_conv_diag_mux  diag_mux_sel;
    bool                    conv_diag_sel;
    enum ad77681_conv_len       conv_len;
    enum ad77681_crc_sel        crc_sel;
    uint8_t                 status_bit;
    enum ad77681_VCM_out            VCM_out;
    enum ad77681_AINn_precharge     AINn;
    enum ad77681_AINp_precharge     AINp;
    enum ad77681_REFn_buffer        REFn;
    enum ad77681_REFp_buffer        REFp;
    enum ad77681_filter_type        filter;
    enum ad77681_sinc5_fir_decimate decimate;
    uint16_t                        sinc3_osr;
    uint16_t                        vref;
    uint16_t                        mclk;
    uint32_t                        sample_rate;
    uint8_t                         data_frame_byte;
};
 
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
uint8_t ad77681_compute_crc8(uint8_t *data,
                 uint8_t data_size,
                 uint8_t init_val);
uint8_t ad77681_compute_xor(uint8_t *data,
                uint8_t data_size,
                uint8_t init_val);
int32_t ad77681_setup(struct ad77681_dev **device,
              struct ad77681_init_param init_param,
              struct ad77681_status_registers **status);
int32_t ad77681_spi_reg_read(struct ad77681_dev *dev,
                 uint8_t reg_addr,
                 uint8_t *reg_data);
int32_t ad77681_spi_read_mask(struct ad77681_dev *dev,
                  uint8_t reg_addr,
                  uint8_t mask,
                  uint8_t *data);
int32_t ad77681_spi_reg_write(struct ad77681_dev *dev,
                  uint8_t reg_addr,
                  uint8_t reg_data);
int32_t ad77681_spi_write_mask(struct ad77681_dev *dev,
                   uint8_t reg_addr,
                   uint8_t mask,
                   uint8_t data);
int32_t ad77681_set_power_mode(struct ad77681_dev *dev,
                   enum ad77681_power_mode mode);
int32_t ad77681_set_mclk_div(struct ad77681_dev *dev,
                 enum ad77681_mclk_div clk_div);
int32_t ad77681_spi_read_adc_data(struct ad77681_dev *dev,
                  uint8_t *adc_data,
                  enum ad77681_data_read_mode mode);
int32_t ad77681_set_conv_mode(struct ad77681_dev *dev,
                  enum ad77681_conv_mode conv_mode,
                  enum ad77681_conv_diag_mux diag_mux_sel,
                  bool conv_diag_sel);
int32_t ad77681_set_convlen(struct ad77681_dev *dev,
                enum ad77681_conv_len conv_len);
int32_t ad77681_soft_reset(struct ad77681_dev *dev);
int32_t ad77681_initiate_sync(struct ad77681_dev *dev);
int32_t ad77681_programmable_filter(struct ad77681_dev *dev,
                    const float *coeffs,
                    uint8_t num_coeffs);
int32_t ad77681_gpio_read(struct ad77681_dev *dev,
              uint8_t *value,
              enum ad77681_gpios gpio_number);
int32_t ad77681_apply_offset(struct ad77681_dev *dev,
                 uint32_t value);
int32_t ad77681_apply_gain(struct ad77681_dev *dev,
               uint32_t value);
int32_t ad77681_set_crc_sel(struct ad77681_dev *dev,
                enum ad77681_crc_sel crc_sel);
int32_t ad77681_gpio_open_drain(struct ad77681_dev *dev,
                enum ad77681_gpios gpio_number,
                enum ad77681_gpio_output_type output_type);
int32_t ad77681_set_continuos_read(struct ad77681_dev *dev,
                   enum ad77681_continuous_read continuous_enable);
int32_t ad77681_clear_error_flags(struct ad77681_dev *dev);
int32_t ad77681_data_to_voltage(struct ad77681_dev *dev,
                uint32_t *raw_code,
                double *voltage);
int32_t ad77681_CRC_status_handling(struct ad77681_dev *dev,
                    uint16_t *data_buffer);
int32_t ad77681_set_AINn_buffer(struct ad77681_dev *dev,
                enum ad77681_AINn_precharge AINn);
int32_t ad77681_set_AINp_buffer(struct ad77681_dev *dev,
                enum ad77681_AINp_precharge AINp);
int32_t ad77681_set_REFn_buffer(struct ad77681_dev *dev,
                enum ad77681_REFn_buffer REFn);
int32_t ad77681_set_REFp_buffer(struct ad77681_dev *dev,
                enum ad77681_REFp_buffer REFp);
int32_t ad77681_set_filter_type(struct ad77681_dev *dev,
                enum ad77681_sinc5_fir_decimate decimate,
                enum ad77681_filter_type filter,
                uint16_t sinc3_osr);
int32_t ad77681_set_50HZ_rejection(struct ad77681_dev *dev,
                   uint8_t enable);
int32_t ad77681_power_down(struct ad77681_dev *dev,
               enum ad77681_sleep_wake sleep_wake);
int32_t ad77681_set_status_bit(struct ad77681_dev *dev,
                   bool status_bit);
int32_t ad77681_set_VCM_output(struct ad77681_dev *dev,
                   enum ad77681_VCM_out VCM_out);
int32_t ad77681_gpio_write(struct ad77681_dev *dev,
               uint8_t value,
               enum ad77681_gpios gpio_number);
int32_t ad77681_gpio_inout(struct ad77681_dev *dev,
               uint8_t direction,
               enum ad77681_gpios gpio_number);
int32_t ad77681_global_gpio(struct ad77681_dev *devices,
                enum ad77681_gobal_gpio_enable gpio_enable);
int32_t ad77681_scratchpad(struct ad77681_dev *dev,
               uint8_t *sequence);
int32_t ad77681_error_flags_enabe(struct ad77681_dev *dev);
int32_t ad77681_update_sample_rate(struct ad77681_dev *dev);
int32_t ad77681_SINC3_ODR(struct ad77681_dev *dev,
              uint16_t *sinc3_dec_reg,
              float sinc3_odr);
int32_t ad77681_status(struct ad77681_dev *dev,
               struct ad77681_status_registers *status);
#endif /* SRC_AD77681_H_ */