The aim of this thesis was to implement the STM32 library for EEPROM and NTAG NFC integrated circuits. The devices used in the preparation of the thesis were the microcontroller STM32F407VET6, EEPROM CAT24M01 and NTAG I2C plus (NT3H2211). The Keil uVision 5 software development environment was used to develop the libraries. It was necessary to create that EEPROM and NTAG I2C plus in the implemented libraries communicate with the microcontroller via the I2C interface. Also, every function within a particular library had to be tested in detail. Each function of the libraries contains a detailed description of the behavior along with a description of each individual parameter. The EEPROM library consists of 10 functions, most of which are for reading and writing data. The NFC NXP library consists of 94 functions, where part of the functions is related to reading and writing data, and part of the functions interact with individual registers to make the NTAG NFC device work according to demanding specifications. After the successful development of the NFC NXP library, using its functions, a pass-through mode was to be implemented, which serves to transfer large amounts of data in a short period of time via NFC interface of the device to the I2C interface or from the I2C interface of the device to the NFC interface. In addition, the functionality of this mode had to be tested using NTAG I2C demo application. By using this mode in combination with EEPROM, it is possible to create systems in which the user sends data via the NFC interface of his smartphone/device, and then this data gets transferred to the EEPROM via the I2C interface and microcontroller. Also, it is possible to create systems in which the microcontroller reads certain sensors, then propagates data in the EEPROM and the user then reads the stored data using the NFC interface when he wants to. An example of such a system is a meteorological station.