Familiar with the software and hardware environment of RT-thread [RT-thread study Note 1]

Software environment: win7 + mdk4.7.2

Hardware environment: stm32f4discovery

OS code used: RT-Thread2.0.0 BETA: https://github.com/RT-Thread/rt-thread/archive/v2.0.0_beta.zip

After decompression, use \ rt-thread-2.0.0_beta \ BSP \ stm32f40x \ project. uvproj for the experiment.

Scons and Python are not used. This is not necessary.

 

Today, I am only familiar with the software environment:

1,RTGo to mainBefore,

Like a normal MDK-STM32 program. The systeminit function in the system_stm32f4xx.c file is used to initialize the clock.

2,MainThe function is located in startup. C.File. For two jobs

Before the system starts, rt_hw_interrupt_disable will disable all interruptions.

Then start rtthread with rtthread_startup

3, Function rtthread_startup ()Completed tasks:

1. Call the rt_hw_board_init function to initialize the board.

2. display version information: rt_show_version

3. initialization system ticking: rt_system_tick_init

4. system kernel object initialization: rt_system_object_init

5. Timer initialization: rt_system_timer_init

6. System stack initialization rt_system_heap_init

7. Task Scheduler initialization: rt_system_scheduler_init

8. rt_application_init // Add a custom task

9. finsh module initialization,

10. Timer thread initialization: rt_system_timer_thread_init

11. initialize rt_thread_idle_init for idle tasks

12. Start task scheduling. The OS takes over the MCU: rt_system_scheduler_start.

After the task scheduling starts, the OS is started. The subsequent tasks are all run under the OS management.

4In RTTHow to add a peripheral driver in the example project:

Add driver header file to board. h

Familiar with the software and hardware environment of RT-thread [RT-thread study Note 1]