66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
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#ifndef __BME280_H__
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#define __BME280_H__
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// Einfach mal wieder was in C schreinben oder so
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// Use extern C from C++
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "hardware/i2c.h"
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#ifndef BME280_ADDR
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#define BME280_ADDR 0x76
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#endif
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// Strcut zum speichern aller kallibrierungsdaten
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typedef struct __bme280_callib {
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// Temp
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uint16_t dig_T1;
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int16_t dig_T2;
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int16_t dig_T3;
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// Luftdruck ??
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uint16_t dig_P1;
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int16_t dig_P2;
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int16_t dig_P3;
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int16_t dig_P4;
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int16_t dig_P5;
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int16_t dig_P6;
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int16_t dig_P7;
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int16_t dig_P8;
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int16_t dig_P9;
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// Luftfeuchtigkeit
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uint8_t dig_H1;
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int16_t dig_H2;
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uint8_t dig_H3;
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int16_t dig_H4;
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int16_t dig_H5;
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int8_t dig_H6;
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} bme280_callib;
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// Usally the way how devkitpro members declare
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// structs in C
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typedef struct bme280_ctx_s {
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// Functions
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void (*update)(struct bme280_ctx_s* self);
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float (*read_temp)(struct bme280_ctx_s* self);
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float (*read_humidity)(struct bme280_ctx_s* self);
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float (*read_pressure)(struct bme280_ctx_s* self);
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/// Nur für bme280.c lesbar
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bme280_callib callib;
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int32_t raw_temperature;
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int32_t raw_humidity;
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int32_t raw_pressure;
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int32_t t_fine;
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i2c_inst_t* i2c;
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} bme280_ctx;
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// Base functions
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bme280_ctx* bme280_init(i2c_inst_t* i2c, uint sda, uint scl);
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void bme280_deinit(bme280_ctx* ctx);
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#ifdef __cplusplus
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}
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#endif
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#endif
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