ad74xx.h

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/***************************************************************************/
#ifndef __AD74XX_H__
#define __AD74XX_H__
 
/******************************************************************************/
/***************************** Include Files **********************************/
/******************************************************************************/
#include <stdint.h>
#include "no_os_spi.h"
#include "no_os_gpio.h"
 
/******************************************************************************/
/******************************** AD74XX **************************************/
/******************************************************************************/
 
/* AD74XX Chip Select Pin declaration */
#define AD74XX_CS_LOW           no_os_gpio_set_value(dev->gpio_cs,  \
                    NO_OS_GPIO_LOW)
#define AD74XX_CS_HIGH          no_os_gpio_set_value(dev->gpio_cs,  \
                    NO_OS_GPIO_HIGH)
 
/******************************************************************************/
/*************************** Types Declarations *******************************/
/******************************************************************************/
 
/* Supported devices */
enum ad74xx_type {
    ID_AD7466  = 12,
    ID_AD7467  = 10,
    ID_AD7468  = 8,
    ID_AD7475  = 12,
    ID_AD7476  = 12,
    ID_AD7476A = 12,
    ID_AD7477  = 10,
    ID_AD7477A = 10,
    ID_AD7478  = 8,
    ID_AD7478A = 8,
    ID_AD7495  = 12
};
 
struct ad74xx_dev {
    /* SPI */
    no_os_spi_desc      *spi_desc;
    /* GPIO */
    struct no_os_gpio_desc  *gpio_cs;
    /* Device Settings */
    int8_t          device_bits_number;
    enum ad74xx_type    part_number;
};
 
struct ad74xx_init_param {
    /* SPI */
    no_os_spi_init_param        spi_init;
    /* GPIO */
    struct no_os_gpio_init_param    gpio_cs;
    /* Device Settings */
    int8_t          device_bits_number;
    enum ad74xx_type    part_number;
};
 
/******************************************************************************/
/************************ Functions Declarations ******************************/
/******************************************************************************/
 
int8_t ad74xx_init(struct ad74xx_dev **device,
           struct ad74xx_init_param init_param);
 
int32_t ad74xx_remove(struct ad74xx_dev *dev);
 
void ad74xx_power_down(struct ad74xx_dev *dev);
 
void ad74xx_power_up(struct ad74xx_dev *dev);
 
uint16_t ad74xx_get_register_value(struct ad74xx_dev *dev);
 
float ad74xx_convert_to_volts(struct ad74xx_dev *dev,
                  uint16_t raw_value,
                  float v_ref);
 
#endif /* __AD74XX_H__ */