#ifndef __MAX31865drv_H
#define __MAX31865drv_H

#ifdef __cplusplus
 extern "C" {
#endif

#include "stm32_spi.h"
#include "math.h"
#include "usart_arb.h"

typedef struct
{
 uint8_t   Vbias;
 uint8_t   Conversion_mode;
 uint8_t   Rtd_wire;
 uint8_t   Filter; 
}max31865_configuration;

//如果RTD为PT100

#define         REF_RES                         (430)
#define         R0                              (100)

/*
 //如果RTD为PT1K
#define         REF_RES                         4000
#define         R0                              1000
*/

#define         ON                              (0x80)
#define         OFF                             (0x00)

#define         Auto_Conversion                 (0x40)
#define         One_Shot_Conversion             (0x20)

#define         RTD_3wire                       (0x10)
#define         RTD_2wire                       (0x00)
#define         RTD_4wire                       (0x00)

#define         Filter_50Hz                     (0x01)
#define         Filter_60Hz                     (0x00)

/* 定义温度修正系数*/

//#define         A                               0.00390830
//#define         B                               -0.0000005775
//#define         C                               -0.00000000000418301





void maxim_31865_write_register(uint8_t uch_register_address, uint8_t uch_register_value);
void maxim_31865_write_nregisters(uint8_t uch_register_address,uint8_t *uch_buff,uint8_t uch_nBytes);
uint8_t maxim_31865_read_register(uint8_t uch_register_address);
void maxim_31865_read_nregisters(uint8_t uch_register_address, uint8_t *uch_buff,uint8_t uch_nBytes);
void maxim_31865_init(max31865_configuration* configuration);
void maxim_set_fault_threshold(float high_threshold, float low_threshold);
uint8_t maxim_auto_fault_detection(void) ;
uint8_t maxim_manual_fault_detection(void);
void maxim_clear_fault_status(void);
void maxim_get_rtd_value(uint8_t *uch_buff);
void delay_us(uint32_t us);

void Get_Hardware_SPI_Temp_Init(void);//配置PT100参数
float Get_Hardware_SPI_Temp(void);//输出温度结果
  
 #ifdef __cplusplus
}
#endif

#endif