iio_ad559xr.h

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/***************************************************************************/
#ifndef __IIO_AD559XR_H__
#define __IIO_AD559XR_H__
#include "iio_types.h"
#include "ad5592r.h"
#include "ad5593r.h"
 
#define AD559XR_MAX_AIO_PORT        8
 
#define AD559XR_MAX_PORT_NAMELEN    24
 
#define AD559XR_ADC_RESOLUTION      12
#define AD559XR_STORAGE_BITS        16
#define AD559XR_STORAGE_BYTES       (AD559XR_STORAGE_BITS/8)
 
#define AD559XR_FULL_SCALE_VALUE    ((1 << AD559XR_ADC_RESOLUTION) - 1)
 
/* AD559xr vref range is from 1000 to VDD (1v up to 5v5)
 * but has an internal VRef of 2500 mV (2v5)
 */
#define AD559XR_MIN_VDD     1.0f
#define AD559XR_MAX_VDD     5.5f
#define AD559XR_INTERNAL_VREF   2.5f
 
#define AD5599XR_MAX_SAMPLE_SIZE    (1024)
 
#define AD559XR_SLOPE_CONSTANT      (3767897513/25)
#define AD559XR_SLOPE_NANO_SCALE    1000000000
 
enum {
    AD559XR_AIO_RAW,
    AD559XR_AIO_SCALE,
    AD559XR_AIO_OFFSET,
    AD559XR_DAC_POWER_DOWN,
    AD559XR_GPIO_LABEL,
    AD559XR_GPIO_RAW,
 
    AD559XR_TEMP_RAW,
    AD559XR_TEMP_SCALE,
    AD559XR_TEMP_OFFSET,
 
    /* global attributes */
    AD559XR_ADC_RANGE,
    AD559XR_ADC_BUFFER,
    AD559XR_DAC_RANGE,
    AD559XR_REF_SELECT,
    AD559XR_VREF_IN_V,
    AD559XR_LDAC_MODE,
    AD559XR_REPETITION,
};
 
struct ad559xr_aio_port {
    char name[AD559XR_MAX_PORT_NAMELEN];
    struct ad5592r_dev *ad5592r;
    uint8_t number;
    uint8_t mode;
    uint8_t gpio_map;
    struct iio_channel *chptr; /* so we can access the scan_index */
};
 
struct iio_ad559xr_desc {
    bool repeat;
    struct no_os_list_desc *aio_ports;
    struct no_os_iterator *aio_ports_iter;
    size_t port_count;
    struct iio_device iiodev;
    struct iio_channel *channels;
    uint8_t *raw_buffer;
    size_t raw_buffer_size;
};
 
struct iio_ad559xr_gpio_map {
    struct ad5592r_dev *ad559xr;
 
    /* this is only relevant for pins which are GPIO. look into your
     * init_param.channel_modes[x] and match the index value you want
     * that particular GPIO to have */
    uint8_t map[AD559XR_MAX_AIO_PORT];
};
 
int iio_ad559xr_aio_init(struct iio_ad559xr_desc **desc,
             struct ad5592r_dev *ad5592r);
int iio_ad559xr_gpio_init(struct iio_ad559xr_desc **desc,
              struct iio_ad559xr_gpio_map *gpio_map,
              const size_t count);
int iio_ad559xr_remove(struct iio_ad559xr_desc *desc);
 
#endif /* __IIO_AD559XR_H__ */