ST STM32F3 Series User Manual

PM0214 Rev 10 209/262
PM0214 Core peripherals
261
4.3.1 Accessing the Cortex-M4 NVIC registers using CMSIS
CMSIS functions enable software portability between different Cortex-M profile processors.
To access the NVIC registers when using CMSIS, use the following functions:
Table 46. CMSIS access NVIC functions
CMSIS function
(1)
1. The input parameter IRQn is the IRQ number. Possible “n” values depend on product. Refer to reference
manual/datasheet of relevant STM32 product for related information.
Description
void NVIC_EnableIRQ(IRQn_Type IRQn) Enables an interrupt or exception.
void NVIC_DisableIRQ(IRQn_Type IRQn) Disables an interrupt or exception.
void NVIC_SetPendingIRQ(IRQn_Type IRQn)
Sets the pending status of interrupt or
exception to 1.
void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
Clears the pending status of interrupt or
exception to 0.
uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
Reads the pending status of interrupt or
exception. This function returns non-
zero value if the pending status is set to
1.
void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
Sets the priority of an interrupt or
exception with configurable priority level
to 1.
uint32_t NVIC_GetPriority(IRQn_Type IRQn)
Reads the priority of an interrupt or
exception with configurable priority
level. This function return the current
priority level.

ST STM32F3 Series Specifications

General

Series	STM32F3
Core	ARM Cortex-M4
Max CPU Frequency	72 MHz
Operating Voltage	2.0 V to 3.6 V
GPIO Pins	Up to 80
Timers	Advanced-control, general-purpose, basic timers
ADC	12-bit
DAC	12-bit
Communication Interfaces	USART, SPI, I2C, CAN, USB
Operating Temperature	-40°C to 85°C
Package	LQFP, UFQFPN, WLCSP

Summary

Introduction

1 About this document

1.1 Typographical conventions

Conventions used in the document for formatting text and code elements.

1.2 List of abbreviations for registers

Abbreviations used in register descriptions.

1.3 About the STM32 Cortex-M4 processor and core peripherals

Overview of the processor's features and integrated peripherals.

2 The Cortex-M4 processor

2.1 Programmers model

Describes the programmer's model, processor modes, privilege levels, and stacks.

2.2 Memory model

Details the processor memory map, access behavior, and bit-banding features.

2.3 Exception model

Explains the exception model, states, types, handlers, and priorities.

2.4 Fault handling

Details fault types, escalation, status registers, and lockup.

2.5 Power management

Describes mechanisms for entering and waking up from sleep modes.

3 The STM32 Cortex-M4 instruction set

3.1 Instruction set summary

Overview of the instruction set and supported instructions.

3.2 CMSIS intrinsic functions

CMSIS intrinsic functions for generating Cortex-M4 instructions.

3.3 About the instruction descriptions

Explains how instruction descriptions are presented in the document.

3.4 Memory access instructions

Details instructions for accessing memory.

3.5 General data processing instructions

Covers general-purpose data processing instructions.

3.6 Multiply and divide instructions

Describes instructions for multiplication and division operations.

3.7 Saturating instructions

Explains instructions that perform saturating arithmetic.

3.8 Packing and unpacking instructions

Instructions for packing and unpacking data.

3.9 Bitfield instructions

Instructions for operating on bitfields within registers.

3.10 Floating-point instructions

Instructions for floating-point operations using the FPU.

3.11 Miscellaneous instructions

Other Cortex-M4 instructions not categorized elsewhere.

4 Core peripherals

4.1 About the STM32 Cortex-M4 core peripherals

Overview of core peripherals and their memory map in the PPB.

4.2 Memory protection unit (MPU)

Details the MPU's functionality for memory protection and region management.

4.3 Nested vectored interrupt controller (NVIC)

Describes the NVIC's support for interrupts, priorities, and tail-chaining.

4.4 System control block (SCB)

Provides system implementation info and control for exceptions.

4.5 SysTick timer (STK)

Details the SysTick timer, its registers, and usage hints.

4.6 Floating point unit (FPU)

Explains the FPU's functionality, registers, and enabling.

5 Revision history