43 lines
981 B
C
43 lines
981 B
C
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#ifndef BME280_H
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#define BME280_H
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#include <stdint.h>
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#define BME280_I2CADDR 0x76
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class BME280
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{
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private:
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// Variables for Calibration Values
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uint8_t dig_H1, dig_H3;
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int8_t dig_H6;
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uint16_t dig_T1, dig_P1;
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int16_t dig_T2, dig_T3, dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9, dig_H2, dig_H4, dig_H5;
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// Helper Variable
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int32_t t_fine;
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// Functions for Calculation compensated Values
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int32_t compensate_t(int32_t);
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int32_t compensate_p(int32_t);
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int32_t compensate_h(int32_t);
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// Helper Functions for Reading / Writing I2C Data
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uint8_t read8(uint8_t addr);
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uint16_t read16(uint8_t addr);
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uint16_t read16_LE(uint8_t addr);
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int16_t readS16(uint8_t addr);
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int16_t readS16_LE(uint8_t addr);
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void write8(uint8_t addr, uint8_t data);
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public:
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BME280(void);
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// Get Calibration Data from Sensor
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void getCalData(void);
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// Read Pressure From Sensor
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void getData(int32_t *t, int32_t *p, int32_t *h);
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};
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#endif
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