max31865.h

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/***************************************************************************/
 
#ifndef __MAX31865_H__
#define __MAX31865_H__
 
#include <stdint.h>
#include <stdbool.h>
#include "no_os_spi.h"
#include "no_os_util.h"
 
#define MAX31865_READ_MASK              0x7F
#define MAX31865_WRITE_MASK             0x80
 
#define MAX31865_CONFIG_BIAS            0x80
#define MAX31865_CONFIG_MODEAUTO        0x40
#define MAX31865_CONFIG_MODEOFF         0xBF
#define MAX31865_CONFIG_1SHOT           0x20
#define MAX31865_CONFIG_3WIRE           0x10
#define MAX31865_CONFIG_2_4WIRE         0xEF
#define MAX31865_CONFIG_CLRFAULT_MASK   0xD3
#define MAX31865_CONFIG_FAULTSTAT       0x02
#define MAX31865_CONFIG_FILT50HZ        0x01
#define MAX31865_CONFIG_FILT60HZ        0xFE
 
#define MAX31865_CONFIG_REG             0x00
#define MAX31865_RTDMSB_REG             0x01
#define MAX31865_RTDLSB_REG             0x02
#define MAX31865_HFAULTMSB_REG          0x03
#define MAX31865_HFAULTLSB_REG          0x04
#define MAX31865_LFAULTMSB_REG          0x05
#define MAX31865_LFAULTLSB_REG          0x06
#define MAX31865_FAULTSTAT_REG          0x07

struct max31865_dev {
    struct no_os_spi_desc *comm_desc;
    bool is_filt_50;
    bool is_odd_wire;
    int t_rc_delay;
};
struct max31865_dev {…};

struct max31865_init_param {
    struct no_os_spi_init_param spi_init;
    float rtd_rc;
};
struct max31865_init_param {…};

int max31865_init(struct max31865_dev **, struct max31865_init_param *);

int max31865_remove(struct max31865_dev *);

int max31865_reg_update(struct max31865_dev *, uint8_t, uint8_t, bool);

int max31865_read(struct max31865_dev *, uint8_t, uint8_t *);

int max31865_write(struct max31865_dev *, uint8_t, uint8_t);

int max31865_read_fault(struct max31865_dev *, uint8_t *);

int max31865_clear_fault(struct max31865_dev *);

int max31865_enable_bias(struct max31865_dev *, bool);

int max31865_auto_convert(struct max31865_dev *, bool);

int max31865_enable_50Hz(struct max31865_dev *, bool);

int max31865_set_threshold(struct max31865_dev *, uint16_t, uint16_t);

int max31865_get_lower_threshold(struct max31865_dev*, uint16_t *);

int max31865_get_upper_threshold(struct max31865_dev*, uint16_t *);

int max31865_set_wires(struct max31865_dev *, bool);

int max31865_read_rtd(struct max31865_dev *, uint16_t *);
 
#endif // __MAX31865_H__