bmp581.h

 
#ifndef _BMP581_H
#define _BMP581_H
 
#include "stm32f439xx.h"
#include "string.h"
 
#include "devices.h"
#include "spi.h"
 
#define BMP581_TEMP_SENSITIVITY             (1.0f / 65535)
#define BMP581_PRESS_SENSITIVITY            (1.0f / 64)
#define BMP581_CHIP_ID                              0x01
#define BMP581_ODR_CFG                      0x37
#define BMP581_ODR_CFG_PWR                  0x03
#define BMP581_ODR_CFG_PWR_STANDBY    0x00
#define BMP581_ODR_CFG_PWR_CONTINUOUS 0x03
#define BMP581_ODR_CFG_DEEP_DIS             0x80
#define BMP581_OSR_CFG_RESERVED             0x80
#define BMP581_OSR_CFG                      0x36
#define BMP581_OSR_CFG_OSR_P                0x38
#define BMP581_OSR_CFG_OSR_P_16         0x04
#define BMP581_OSR_CFG_PRESS_EN             0x40
#define BMP581_INT_STATUS                           0x27
#define BMP581_STATUS                                   0x28
#define BMP581_STATUS_NVM_RDY                   0x02
#define BMP581_STATUS_NVM_ERR                   0x04
#define BMP581_OSR_CFG_PRESS_EN             0x40
#define BMP581_TEMPERATURE_XLSB             0x1D
#define BMP581_TEMPERATURE_LSB              0x1E
#define BMP581_TEMPERATURE_MSB              0x1F
#define BMP581_PRESSURE_XLSB                0x20
#define BMP581_PRESSURE_LSB                 0x21
#define BMP581_PRESSURE_MSB                 0x22
#define BMP581_CMD                                  0x7E
 
#define BMP581_DATA_SIZE         3 // Three bytes per reading
#define BMP581_DATA_COUNT        2 // Two readings - temperature, pressure
#define BMP581_DATA_TOTAL        (BMP581_DATA_COUNT * BMP581_DATA_SIZE)


typedef struct BMP581 {
  SPI base;
  float pressSensitivity;
  float tempSensitivity;
  void (*update)(struct BMP581 *);
  void (*readTemp)(struct BMP581 *, float *);
  void (*readPress)(struct BMP581 *, float *);
  void (*readRawTemp)(struct BMP581 *, uint8_t *);
  void (*readRawPress)(struct BMP581 *, uint8_t *);
  void (*processRawTemp)(struct BMP581 *, uint8_t *, float *);
  void (*processRawPress)(struct BMP581 *, uint8_t *, float *);
  uint8_t rawTemp[BMP581_DATA_SIZE];
  uint8_t rawPress[BMP581_DATA_SIZE];
  float temp;
  float press;
  float groundPress;
} BMP581;
 
DeviceHandle_t BMP581_init(BMP581 *, char[DEVICE_NAME_LENGTH], GPIO_TypeDef *, unsigned long, const float, const float);
void BMP581_update(BMP581 *);
void BMP581_readTemp(BMP581 *, float *);
void BMP581_readPress(BMP581 *, float *);
void BMP581_readRawTemp(BMP581 *, uint8_t *);
void BMP581_readRawPress(BMP581 *, uint8_t *);
void BMP581_processRawTemp(BMP581 *, uint8_t *, float *);
void BMP581_processRawPress(BMP581 *, uint8_t *, float *);
 
uint8_t BMP581_readRegister(BMP581 *, uint8_t);
void BMP581_readRegisters(BMP581 *, uint8_t , uint8_t , uint8_t *);
void BMP581_writeRegister(BMP581 *, uint8_t, uint8_t);

#endif