STSW-ST87M01APP

Description

The STSW-ST87M01APP software package provides a comprehensive set of ready-to-use firmware examples for the STM32U5 microcontroller family.

These examples demonstrate and simplify the integration of the ST87M01 NB-IoT and GNSS module using the ST87Mxx easy connect library.

It supports two distinct hardware platforms: STEVAL-NBIOTV1 and EVKITST87M01-2.

STEVAL-NBIOTV1 is an advanced evaluation platform tailored for asset tracking, smart city, and metering applications. It combines the ST87M01 NB-IoT/GNSS module with the STM32U585RI MCU, multiple environmental and motion sensors, and a SIM socket for cellular connectivity. The platform supports UART, I²C, and SPI interfaces, alongside efficient power management and expandable functionality.

EVKITST87M01-2 is an evaluation board in the X-NUCLEO shield form factor with Arduino® compatibility, designed specifically for the ST87M01 module. As this platform does not include an STM32, it requires a NUCLEO-U545RE-Q board as the host MCU to run firmware examples.

The easy connect library (EC_Lib) is a comprehensive C-based software library designed to enable seamless interaction with the ST87M01 NB-IoT module. It provides a high-level abstraction layer that simplifies access to the module's core functionalities, including NB-IoT connectivity and GNSS positioning. Delivered as source code, the library allows developers to efficiently integrate and control the ST87M01 module within their applications.

EC_Lib is designed to be OS-agnostic and hardware-independent, making it versatile for use across various embedded platforms. It offers a minimal yet powerful application programming interface (API) set that encapsulates complex AT command sequences into easy-to-use C functions, reducing development time and complexity.

The library includes precoded sequences for common operations such as network registration, data transmission over UDP, TCP, MQTT, CoAP, HTTP.

Configuration is streamlined through static parameters defined in header files, enabling users to tailor the library to their specific application needs without extensive API parameter overhead. Additionally, EC_Lib supports TLS provisioning for secure communications, including importing, generating, and managing cryptographic keys and certificates.

The library's internal design is based on finite state machines (FSMs) to manage asynchronous communication sequences reliably. It provides mechanisms for synchronous and asynchronous data transfers, callback-based event handling, and debugging capabilities such as UART message monitoring and trace logging.