STM32 Peripheral Drivers
- 2. STM32 Peripheral Driver Support ● STM32 Snippets (Code Examples to access STM32 Peripherals) STM32 Standard Peripheral Libraries (SPL) ( C Libraries to access STM32 Peripherals) ● STM32Cube (Packages with drivers , collection of middleware such as USB, TCP/IP, Graphics, Filesystem and RTOS) – HAL API (Hardware Abstraction Layer API) – LL API ( Low Layer API) ● STM32CubeMx is a Graphical tool to configure STM32 microcontroller and generate C code. – –
- 3. CMSIS ● Any Industry standard for designing ARM micro-controller bare metal device driver ? – Yes , It is called Cortex Microcontroller Software Interface Standard – CMSIS is a framework to integrate third-party software ● Why CMSIS was needed? – To standardize software interfaces among all Cortex-M silicon vendor products. – To provide a common approach for software interfaces among peripheral access, RTOS,DSP and many other middleware components – This helps in software reuse in migrating from one silicon version to another and also from one vendor to another – ● ●
- 4. CMSIS ● To understand CMSIS better, Lets divide the embedded software to four layers – Application Layer – Middleware Layer for USB , Graphics, Filesystem, RTOS etc – Device Peripherals Access Layer – Core Registers access layer – – – ●
- 5. What is required to be CMSIS compliant code ? ● Following are some of the essential rules & conventions to be followed by CMSIS compliant code : – Compliant with ANSI C (C99) and C++ (C++03). – Uses ANSI C standard data types defined in <stdint.h>. – Variables and parameters have a complete data type.Expressions for #define constants are enclosed in parenthesis. – Additionally , CMSIS recommends following conventions for identifiers : • CAPITAL names to identify Core Registers, Peripheral Registers, and CPU Instructions. • CamelCase names to identify function names and interrupt functions. • Namespace_ prefixes avoid clashes with user identifiers and provide functional groups (i.e. for peripherals, RTOS, or DSP Library). • The CMSIS is documented within the source files with: • Comments that use the C or C++ style. • Doxygen compliant function comments that provide:brief function overview.detailed description of the function.detailed parameter explanation.detailed information about return values.
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- 7. Copyright@Embedkari THANKS If you found this information useful Please like this video AND subscribe to www.youtube.com/embedkari Embedded Career Information : www.facebook.com/embedkari Website:www.embedkari.com