max31827.h

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/***************************************************************************/
#ifndef __MAX31827_H__
#define __MAX31827_H__
 
#include "no_os_i2c.h"
#include "no_os_util.h"
 
#define MAX31827_T_REG  0x0
#define MAX31827_CONF_REG   0x2
#define MAX31827_TH_REG 0x4
#define MAX31827_TL_REG 0x6
#define MAX31827_TH_HYST_REG    0x8
#define MAX31827_TL_HYST_REG    0xA
 
#define MAX31827_CONF_1SHOT_MASK    NO_OS_BIT(0)
#define MAX31827_CONF_CNV_RATE_MASK NO_OS_GENMASK(3, 1)
#define MAX31827_CONF_PEC_EN_MASK   NO_OS_BIT(4)
#define MAX31827_CONF_TIMEOUT_MASK  NO_OS_BIT(5)
#define MAX31827_CONF_RESO_MASK NO_OS_GENMASK(7, 6)
#define MAX31827_CONF_ALRM_POL_MASK NO_OS_BIT(8)
#define MAX31827_CONF_COMP_INT_MASK NO_OS_BIT(9)
#define MAX31827_CONF_FLT_Q_MASK    NO_OS_GENMASK(11, 10)
#define MAX31827_CONF_U_TEMP_STAT_MASK  NO_OS_BIT(14)
#define MAX31827_CONF_O_TEMP_STAT_MASK  NO_OS_BIT(15)
 
#define MAX31827_CONF_CNV_RATE(x) \
    no_os_field_get(MAX31827_CONF_CNV_RATE_MASK, x)
#define MAX31827_CONF_RESO(x) \
    no_os_field_get(MAX31827_CONF_RESO_MASK, x)
#define MAX31827_CONF_U_TEMP_STAT(x) \
    no_os_field_get(MAX31827_CONF_U_TEMP_STAT_MASK, x)
#define MAX31827_CONF_O_TEMP_STAT(x) \
    no_os_field_get(MAX31827_CONF_O_TEMP_STAT_MASK, x)
 
#define MAX31827_ALRM_POL_LOW   0x0
#define MAX31827_ALRM_POL_HIGH  0x1
#define MAX31827_FLT_Q_1    0x0
#define MAX31827_FLT_Q_4    0x2
 
#define MAX31827_M_DGR_TO_16_BIT(x) (((x) << 4) / 1000)
#define MAX31827_DEVICE_ENABLE(x)   ((x) ? 0xA : 0x0)
 
enum max31827_cnv {
    MAX31827_CNV_1_DIV_64_HZ = 1,
    MAX31827_CNV_1_DIV_32_HZ,
    MAX31827_CNV_1_DIV_16_HZ,
    MAX31827_CNV_1_DIV_4_HZ,
    MAX31827_CNV_1_HZ,
    MAX31827_CNV_4_HZ,
    MAX31827_CNV_8_HZ,
};
 
enum max31827_resolution {
    MAX31827_RES_8_BIT = 0,
    MAX31827_RES_9_BIT,
    MAX31827_RES_10_BIT,
    MAX31827_RES_12_BIT,
};
 
extern const uint16_t max31827_conversions[8];
 
extern const uint16_t max31827_resolutions[4];
 
extern const int max31827_conv_times[4];
 
struct max31827_device {
    struct no_os_i2c_desc *i2c_desc;
    bool enable;
    unsigned int resolution;
    unsigned int update_interval;
};
 
struct max31827_init_param {
    struct no_os_i2c_init_param i2c_init_param;
    bool comp_int;
    bool alarm_pol;
    uint8_t fault_q;
    bool timeout_enable;
};
 
int max31827_reg_read(struct max31827_device *dev, uint8_t addr, uint16_t *val);
 
int max31827_reg_write(struct max31827_device *dev, uint8_t addr, uint16_t val);
 
int max31827_reg_update_bits(struct max31827_device *dev, uint8_t addr,
                 uint16_t mask, uint16_t val);
 
int max31827_init(struct max31827_device **dev,
          struct max31827_init_param *init_param);
 
int max31827_remove(struct max31827_device *dev);
 
int max31827_init_client(struct max31827_device *dev,
             struct max31827_init_param *init_param);
 
int max31827_read_temp(struct max31827_device *dev, uint8_t addr, int32_t *val);
 
int max31827_read_temp_input(struct max31827_device *dev, int32_t *val);
 
int max31827_shutdown_write(struct max31827_device *dev, uint8_t reg,
                uint16_t mask, uint16_t val);
 
int max31827_write_alarm_val(struct max31827_device *dev, unsigned int reg,
                 int32_t val);
 
#endif  /* __MAX31827_H__ */