Initial Commit

include/bme280.h

@@ -0,0 +1,66 @@
+#ifndef __BME280_H__
+#define __BME280_H__
+
+// Einfach mal wieder was in C schreinben oder so
+
+// Use extern C from C++
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "hardware/i2c.h"
+
+#ifndef BME280_ADDR
+#define BME280_ADDR 0x76
+#endif
+
+// Strcut zum speichern aller kallibrierungsdaten
+typedef struct __bme280_callib {
+  // Temp
+  uint16_t dig_T1;
+  int16_t dig_T2;
+  int16_t dig_T3;
+  // Luftdruck ??
+  uint16_t dig_P1;
+  int16_t dig_P2;
+  int16_t dig_P3;
+  int16_t dig_P4;
+  int16_t dig_P5;
+  int16_t dig_P6;
+  int16_t dig_P7;
+  int16_t dig_P8;
+  int16_t dig_P9;
+  // Luftfeuchtigkeit
+  uint8_t dig_H1;
+  int16_t dig_H2;
+  uint8_t dig_H3;
+  int16_t dig_H4;
+  int16_t dig_H5;
+  int8_t dig_H6;
+} bme280_callib;
+
+// Usally the way how devkitpro members declare
+// structs in C
+typedef struct bme280_ctx_s {
+  // Functions
+  void (*update)(struct bme280_ctx_s* self);
+  float (*read_temp)(struct bme280_ctx_s* self);
+  float (*read_humidity)(struct bme280_ctx_s* self);
+  float (*read_pressure)(struct bme280_ctx_s* self);
+  /// Nur für bme280.c lesbar
+  bme280_callib callib;
+  int32_t raw_temperature;
+  int32_t raw_humidity;
+  int32_t raw_pressure;
+  int32_t t_fine;
+  i2c_inst_t* i2c;
+} bme280_ctx;
+
+// Base functions
+bme280_ctx* bme280_init(i2c_inst_t* i2c, uint sda, uint scl);
+void bme280_deinit(bme280_ctx* ctx);
+
+#ifdef __cplusplus
+}
+#endif
+#endif