Introduction

STM32Cube is an STMicroelectronics original initiative to significantly improve designer's productivity by reducing development

effort, time and cost. STM32Cube covers the whole STM32 portfolio.

STM32Cube includes:

• A set of user-friendly software development tools to cover project development from the conception to the realization,

among which:

– STM32CubeMX, a graphical software configuration tool that allows the automatic generation of C initialization code

using graphical wizards

– STM32CubeIDE, an all-in-one development tool with IP configuration, code generation, code compilation, and debug

– STM32Cube hardware abstraction layer (HAL), ensuring maximized portability across the STM32 portfolio

– STM32Cube low-layer APIs, ensuring the best performance and footprints with a high degree of user control over the

HW

– A consistent set of middleware components such as FAT file system, RTOS, USB Device, and USB Power Delivery

– All embedded software utilities with full sets of peripheral and applicative examples

• STM32Cube Expansion Packages, which contain embedded software components that complement the functionalities of

the STM32Cube MCU & MPU Packages with:

– Middleware extensions and applicative layers

– Examples running on some specific STMicroelectronics development boards

The STM32CubeG4 Nucleo demonstration firmware is built around the STM32Cube hardware abstraction layer (HAL) and low-

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STM32CubeG4 gathers, in a single package, all the generic embedded software components, required to develop

an application on STM32G4 microcontrollers. In line with the STM32Cube initiative, this set of components is

highly portable, not only to the STM32G4 Series but also to other STM32 series.

STM32CubeG4 is fully compatible with the STM32CubeMX code generator that allows to generate initialization

code.

The package includes a driver layer (HAL) proposing a set of abstraction services and a low-level hardware layer

(LL) proposing a set of register-level functions, together with an extensive set of examples running on

STMicroelectronics boards. HAL is available in open-source BSD license for user convenience.

• USB PD Devices and Core libraries

• USB Device library

Several applications and demonstrations implementing all these middleware components are also provided in the

STM32CubeG4 MCU Package.

The block diagram of STM32Cube is shown in Figure 1.

The STM32G4 microcontrollers are based on the Arm

32-bit Cortex

-M4 processor.

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

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