Hi Ale_00,
The original definition of read-write functions is as follows: typedef BME280_INTF_RET_TYPE (*bme280_read_fptr_t)(uint8_t reg_addr, uint8_t *reg_data, uint32_t len, void *intf_ptr); typedef BME280_INTF_RET_TYPE (*bme280_write_fptr_t)(uint8_t reg_addr, const uint8_t *reg_data, uint32_t len, void *intf_ptr);
I upload BME280 example code on STM32F401 for your reference.
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