ad7689.h

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/***************************************************************************/
#ifndef AD7689_H_
#define AD7689_H_
 
#include <stdint.h>
#include <stdbool.h>
#include "no_os_spi.h"
 
#define AD7689_CFG_CFG_MSK      NO_OS_BIT(13)
#define AD7689_CFG_INCC_MSK     NO_OS_GENMASK(12,10)
#define AD7689_CFG_INX_MSK      NO_OS_GENMASK(9,7)
#define AD7689_CFG_BW_MSK       NO_OS_BIT(6)
#define AD7689_CFG_REF_MSK      NO_OS_GENMASK(5,3)
#define AD7689_CFG_SEQ_MSK      NO_OS_GENMASK(2,1)
#define AD7689_CFG_RB_MSK       NO_OS_BIT(0)
 
enum ad7689_device_id {
    ID_AD7689,
    ID_AD7682,
    ID_AD7949,
    ID_AD7699,
};
 
enum ad7689_incc {
    AD7689_BIPOLAR_DIFFERENTIAL_PAIRS = 0x1,
    AD7689_BIPOLAR_COM,
    AD7689_TEMPERATURE_SENSOR,
    AD7689_UNIPOLAR_DIFFERENTIAL_PAIRS = 0x5,
    AD7689_UNIPOLAR_COM,
    AD7689_UNIPOLAR_GND
};
 
enum ad7689_bw {
    AD7689_BW_QUARTER,
    AD7689_BW_FULL
};
 
enum ad7689_ref {
    AD7689_REF_INTERNAL_2p5V,
    AD7689_REF_INTERNAL_4p096V,
    AD7689_REF_EXTERNAL_TEMP,
    AD7689_REF_EXTERNAL_TEMP_IBUF,
    AD7689_REF_EXTERNAL = 0x6,
    AD7689_REF_IBUF
};
 
enum ad7689_seq {
    AD7689_SEQ_DISABLE,
    AD7689_SEQ_UPDATE_CFG,
    AD7689_SEQ_SCAN_ALL_THEN_TEMP,
    AD7689_SEQ_SCAN_ALL
};
 
struct ad7689_config {
    enum ad7689_incc incc;
    uint8_t inx;
    enum ad7689_bw bw;
    enum ad7689_ref ref;
    enum ad7689_seq seq;
    bool rb;
};
 
struct ad7689_init_param {
    enum ad7689_device_id id;
    struct ad7689_config config;
    struct no_os_spi_init_param spi_init;
};
 
struct ad7689_dev {
    const char *name;
    enum ad7689_device_id id;
    struct ad7689_config configs[2];
    struct no_os_spi_desc *spi_desc;
};
 
int32_t ad7689_init(struct ad7689_dev **dev,
            struct ad7689_init_param *init_param);
int32_t ad7689_write_config(struct ad7689_dev *dev,
                struct ad7689_config *config);
int32_t ad7689_read_config(struct ad7689_dev *dev,
               struct ad7689_config *config);
int32_t ad7689_read(struct ad7689_dev *dev, uint16_t *data,
            uint32_t nb_samples);
int32_t ad7689_remove(struct ad7689_dev *dev);
 
#endif