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freertos移植至STM32H750VBT6 （1071个子文件）

Project.uvguix.Administrator 182KB

port_asm.asm 6KB

Project.axf 1.57MB

Project.bin 21KB

cc936.c 708KB

cc949.c 555KB

cc950.c 441KB

stm32h7xx_hal_hrtim.c 324KB

stm32h7xx_hal_tim.c 255KB

cc932.c 244KB

stm32h7xx_hal_i2c.c 239KB

stm32h7xx_hal_fdcan.c 211KB

ff.c 207KB

tasks.c 174KB

stm32h7xx_hal_cryp.c 172KB

stm32h7xx_hal_uart.c 161KB

stm32h7xx_hal_adc.c 161KB

stm32h7xx_hal_mmc.c 142KB

stm32h7xx_hal_jpeg.c 142KB

stm32h7xx_hal_dfsdm.c 133KB

stm32h7xx_hal_hash.c 131KB

stm32h7xx_hal_sd.c 131KB

stm32h7xx_hal_rcc_ex.c 129KB

stm32h7xx_hal_usart.c 127KB

stm32h7xx_hal_smartcard.c 126KB

stm32h7xx_hal_spi.c 122KB

stm32h7xx_hal_eth.c 117KB

stm32h7xx_hal_ospi.c 111KB

stm32h7xx_hal_eth.c 105KB

stm32h7xx_hal_irda.c 104KB

stm32h7xx_hal_tim_ex.c 104KB

stm32h7xx_hal_adc_ex.c 102KB

stm32h7xx_hal_dsi.c 98KB

stm32h7xx_hal_smbus.c 98KB

queue.c 94KB

stm32h7xx_hal_sai.c 94KB

stm32h7xx_hal_fmac.c 90KB

stm32h7xx_hal_qspi.c 89KB

stm32h7xx_hal_rtc_ex.c 87KB

stm32h7xx_hal_i2s.c 83KB

stm32h7xx_hal_lptim.c 78KB

stm32h7xx_hal_pwr_ex.c 77KB

stm32h7xx_hal_dma2d.c 76KB

stm32h7xx_hal_nand.c 73KB

stm32h7xx_hal_ltdc.c 73KB

stm32h7xx_hal_rtc.c 71KB

stm32h7xx_hal_dma.c 69KB

stm32h7xx_hal_rcc.c 66KB

stm32h7xx_hal_flash_ex.c 64KB

stm32h7xx_hal_mdma.c 63KB

stm32h7xx_hal_pcd.c 63KB

stm32h7xx_hal_swpmi.c 61KB

stm32h7xx_ll_usb.c 59KB

cmsis_os2.c 59KB

stm32h7xx_hal_pssi.c 56KB

stm32h7xx_ll_tim.c 56KB

stm32h7xx_ll_adc.c 54KB

stm32h7xx_hal_spdifrx.c 54KB

stm32h7xx_hal_dac.c 53KB

stm32h7xx_ll_sdmmc.c 53KB

stm32h7xx_ll_rcc.c 52KB

stm32h7xx_ll_utils.c 51KB

stm32h7xx_ll_mdma.c 50KB

cmsis_os.c 50KB

stm32h7xx_hal_hcd.c 49KB

stm32h7xx_hal_hash_ex.c 48KB

stm32h7xx_hal_nor.c 47KB

mpu_wrappers.c 47KB

stm32h7xx_hal_cordic.c 45KB

stm32h7xx_hal.c 44KB

stream_buffer.c 43KB

port.c 43KB

stm32h7xx_hal_comp.c 41KB

stm32h7xx_hal_dcmi.c 40KB

timers.c 40KB

stm32h7xx_hal_sdram.c 40KB

stm32h7xx_ll_fmc.c 40KB

stm32h7xx_hal_opamp.c 40KB

stm32h7xx_ll_spi.c 38KB

stm32h7xx_hal_flash.c 37KB

stm32h7xx_hal_uart_ex.c 37KB

port.c 36KB

stm32h7xx_hal_sram.c 34KB

port.c 33KB

stm32h7xx_hal_rng.c 33KB

port.c 33KB

stm32h7xx_hal_pwr.c 33KB

stm32h7xx_hal_cec.c 32KB

stm32h7xx_hal_otfdec.c 31KB

stm32h7xx_hal_gfxmmu.c 31KB

stm32h7xx_ll_rtc.c 31KB

共 1071 条

October 2019 UM1722 Rev 3 1/28

UM1722

User manual

Developing applications on STM32Cube with RTOS

Introduction

The STM32Cube is an STMicroelectronics original initiative to significantly improve

developer productivity by reducing development effort, time and cost. STM32Cube covers

the whole STM32 portfolio.

STM32Cube includes

• STM32CubeMX, a graphical software configuration tool that allows the generation of C

initialization code using graphical wizards.

• A comprehensive embedded software platform, delivered per Series (such as

STM32CubeF4 for STM32F4 Series)

– The STM32Cube HAL, STM32 abstraction layer embedded software ensuring

maximized portability across the STM32 portfolio,

– Low-layer APIs (LL) offering a fast light-weight expert-oriented layer, which is

closer to the hardware than the HAL. LL APIs are available only for a set of

peripherals.

– A consistent set of middleware components such as RTOS, USB, TCP/IP,

Graphics,

– All embedded software utilities, delivered with a full set of examples.

A real-time operating system is an operating system optimized for use in embedded/real-

time applications. Their primary objective is to ensure a timely and deterministic response to

events. Using a real-time operating system allows applications to be written as a set of

independent threads that inter-communicate using message queues and semaphores.

This user manual is intended for developers who use STM32Cube firmware on STM32

microcontrollers and microprocessors. It provides a full description of how to use the

STM32Cube firmware components with a real-time operating system (RTOS); this user

manual comes also with description of a set of examples based on FreeRTOS™ using the

common APIs provided by the CMSIS-OS wrapping layer. In the STM32Cube firmware

FreeRTOS™ is used as real-time operating system through the generic CMSIS-OS

wrapping layer provided by Arm

. Examples and applications using the FreeRTOS™ can

be directly ported on any other RTOS without modifying the high level APIs, only the

CMSIS-OS wrapper has to be changed in this case. Refer to the release notes of the

package to know the version of FreeRTOS™ and CMSIS-RTOS firmware components used

with the STM32Cube.

This document is applicable to all STM32 devices; however for simplicity reason, the

STM32F4xx devices and STM32CubeF4 are used as reference platform. To know more

about the examples implementation on your STM32 device, please refer to the readme file

provided within the associated STM32Cube firmware package.

www.st.com

Contents UM1722

2/28 UM1722 Rev 3

Contents

1 FreeRTOS™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 FreeRTOS™ source organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Porting FreeRTOS™ on STM32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5 FreeRTOS™ API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.6 FreeRTOS™ memory management . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.7 FreeRTOS™ low power management . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8 FreeRTOS™ configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2 CMSIS-RTOS module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.2 CMSIS-RTOS API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3 FreeRTOS™ applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.1 Thread creation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.2 Semaphores examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.1 Semaphore between threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2.2 Semaphore from ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3 Mutexes example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.4 Queues example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.5 Timer example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.6 Low-power example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

UM1722 Rev 3 3/28

UM1722 List of tables

List of tables

Table 1. FreeRTOS™ API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 2. CMSIS-RTOS API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 3. FreeRTOS™ application categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 4. Comparison of power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

List of figures UM1722

4/28 UM1722 Rev 3

List of figures

Figure 1. FreeRTOS™ license. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 2. FreeRTOS™ architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3. FreeRTOS™ port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4. FreeRTOS™ configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 5. CMSIS-RTOS architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 6. Thread example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 7. Semaphore example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 8. Obtaining semaphore from ISR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 9. Queue process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 10. Periodic timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

UM1722 Rev 3 5/28

UM1722 FreeRTOS™

1 FreeRTOS™

1.1 Overview

FreeRTOS™ is a class of RTOS that is designed to be small enough to run on a

microcontroller or microprocessor, although its use is not limited to microcontroller and

microprocessor applications.

A microcontroller or a microprocessor is a small and resource real-time constrained

processor that incorporates, on a single chip, the processor itself, read only memory (ROM

or Flash) to hold the program to be executed, and the random access memory (RAM)

needed by the programs it executes. Typically the program is executed directly from the

read only memory.

Microcontrollers and microprocessor are used in deeply embedded applications (those

applications where you never actually see the processors themselves or the software they

are running) that normally have a very specific and dedicated job to do. The size

constraints, and dedicated end application nature, rarely warrant the use of a full RTOS

implementation - or indeed make the use of a full RTOS implementation possible.

FreeRTOS™ therefore provides the core real-time scheduling functionality, inter-task

communication, timing and synchronization primitives only. This means it is more accurately

described as a real-time kernel, or real-time executive. Additional functionality, such as a

command console interface, or networking stacks, can be then be included with add-on

components.

FreeRTOS™ is a scalable real-time demonstration builder core designed specifically for

small embedded systems. Highlights include

• FreeRTOS™ demonstration builder core-preemptive, cooperative and hybrid

configuration options.

• Official support for 27 architectures (counting ARM7 and Arm

Cortex

-M3 as one

architecture each).

• FreeRTOS-MPU supports the Arm

Cortex

-M3 Memory Protection Unit (MPU).

• Designed to be small, simple and easy to use. Typically a demonstration builder core

binary image will be in the region of 4K to 9K bytes.

• Very portable code structure predominantly written in C.

• Supports both tasks and co-routines.

• Queues, binary semaphores, counting semaphores, recursive semaphores and

mutexes for communication and synchronization between tasks, or between tasks and

interrupts.

• Mutexes with priority inheritance.

• Supports efficient software timers.

• Powerful execution traces functionality.

• Stack overflows detection options.

• Pre-configured demo applications for selected single board computers allowing out of

the box operation and fast learning curve.

• Free forum support, or optional commercial support and licensing.

• No software restriction on the number of tasks that can be created.

• No software restriction on the number of priorities that can be used.

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