driver_max31855.h

Go to the documentation of this file.

 
#ifndef DRIVER_MAX31855_H
#define DRIVER_MAX31855_H
 
#include <stdio.h>
#include <stdint.h>
#include <string.h>
 
#ifdef __cplusplus
extern "C"{
#endif



typedef enum
{
    MAX31855_FAULT_NONE = 0x00,           
    MAX31855_FAULT_OC  = (1 << 0),        
    MAX31855_FAULT_SCG = (1 << 1),        
    MAX31855_FAULT_SCV = (1 << 2),        
} max31855_fault_t;

typedef struct max31855_handle_s
{
    uint8_t (*spi_init)(void);                                  
    uint8_t (*spi_deinit)(void);                                
    uint8_t (*spi_read_cmd)(uint8_t *buf, uint16_t len);        
    void (*delay_ms)(uint32_t ms);                              
    void (*debug_print)(const char *const fmt, ...);            
    uint8_t inited;                                             
    uint8_t fault;                                              
} max31855_handle_t;

typedef struct max31855_info_s
{
    char chip_name[32];                
    char manufacturer_name[32];        
    char interface[8];                 
    float supply_voltage_min_v;        
    float supply_voltage_max_v;        
    float max_current_ma;              
    float temperature_min;             
    float temperature_max;             
    uint32_t driver_version;           
} max31855_info_t;



#define DRIVER_MAX31855_LINK_INIT(HANDLE, STRUCTURE)               memset(HANDLE, 0, sizeof(STRUCTURE))

#define DRIVER_MAX31855_LINK_SPI_INIT(HANDLE, FUC)                (HANDLE)->spi_init = FUC

#define DRIVER_MAX31855_LINK_SPI_DEINIT(HANDLE, FUC)              (HANDLE)->spi_deinit = FUC

#define DRIVER_MAX31855_LINK_SPI_READ_COMMAND(HANDLE, FUC)        (HANDLE)->spi_read_cmd = FUC

#define DRIVER_MAX31855_LINK_DELAY_MS(HANDLE, FUC)                (HANDLE)->delay_ms = FUC

#define DRIVER_MAX31855_LINK_DEBUG_PRINT(HANDLE, FUC)             (HANDLE)->debug_print = FUC



uint8_t max31855_info(max31855_info_t *info);

uint8_t max31855_init(max31855_handle_t *handle);

uint8_t max31855_deinit(max31855_handle_t *handle);

uint8_t max31855_read(max31855_handle_t *handle, int16_t *thermocouple_raw, float *thermocouple_temp,
                      int16_t *reference_junction_raw, float *reference_junction_temp);

uint8_t max31855_get_last_fault(max31855_handle_t *handle, max31855_fault_t *fault);



uint8_t max31855_get_reg(max31855_handle_t *handle, uint32_t *data);


 
#ifdef __cplusplus
}
#endif
 
#endif