55 lines
1 KiB
C
55 lines
1 KiB
C
#ifndef BMP_H
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#define BMP_H
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#include "hardware/i2c.h"
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#include <stdint.h>
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#define BMP_ADDR 0x77
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static const uint8_t BMP_STATUS = 0x03;
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static const uint8_t BMP_DATA = 0x04;
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static const uint8_t BMP_CAL_ADDR = 0x31;
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#define BMP_CAL_LEN 21
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// instead of a bunch of defines
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enum {
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PAR_T1,
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PAR_T2,
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PAR_T3,
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PAR_P1,
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PAR_P2,
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PAR_P3,
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PAR_P4,
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PAR_P5,
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PAR_P6,
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PAR_P7,
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PAR_P8,
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PAR_P9,
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PAR_P10,
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PAR_P11
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};
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// raw calibration data
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typedef struct {
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uint16_t NVM_PAR_T1;
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uint16_t NVM_PAR_T2;
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int8_t NVM_PAR_T3;
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int16_t NVM_PAR_P1;
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int16_t NVM_PAR_P2;
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int8_t NVM_PAR_P3;
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int8_t NVM_PAR_P4;
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uint16_t NVM_PAR_P5;
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uint16_t NVM_PAR_P6;
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int8_t NVM_PAR_P7;
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int8_t NVM_PAR_P8;
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int16_t NVM_PAR_P9;
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int8_t NVM_PAR_P10;
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int8_t NVM_PAR_P11;
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} bmp_cal_data_t;
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// floating point conversions
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extern float bmp_cal_data_fp[15];
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int getBMPData(i2c_inst_t *i2c, float *temperature, float *pressure);
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int getBMPCalData(i2c_inst_t *i2c, bmp_cal_data_t *cal);
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int initBMP(i2c_inst_t *i2c);
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#endif // BMP_H
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