[STM32] stm32cubemx tutorial II - basic use (new projects light up LED lights)

Hello everyone , I meet you again , I'm your friend, Quan Jun .

Preface

The configured CubeMX after , Is the beginning of the new project , So first we need some preparation , We will introduce this blog in detail STM32CubeMx And how to create a new project and light it up LED The lamp For beginners If you want to create a project quickly , You can skip the function introduction directly , Watch the project creation column

also , When building a new project , We divide it into specific processes 1~7 If you don't want to see the explanation of each part , Just follow the process ,5 Minutes to successfully light LED The lamp

install STM32CubeMx Please see 《STM32 CubeMx Use tutorial one – Installation tutorial 》

Preparation ：

1、STM32 Hardware （ My is STM32F407ZE and STM32F103ZE）

2、STM32CubeMx Software 、 IDE Keil（MDK-ARM） Software

3、STM32F4xxHAL library

New project

1 Select... In the main interface File–>New Project Or click directly ACCEE TO MCU SELECTOR

The chip model selection... Appears Generally, we can directly search the model of our own chip

If you are designing a product and want to choose a chip Under the search bar , Various search methods provided , You can choose the chip core , model , wait , Help you find the right chip

Specific process 1：

• 1 Search chip model
• 2 Select chip
• 3 Create a project

Then the next is the highlight of our whole process

Here we are divided into three parts to explain

1MCU Peripheral resource selection

Here you can choose MCU Various resources and peripherals

There are two ways

• Categories Type selection

take MCU Classification of various peripherals and resources , For users to choose

• A-Z Sequence selection

MCU For peripheral resources, press A-Z Sort , For users to choose

2 Peripheral configuration

Here you can set various functions of the peripherals you choose

Here is the serial port 1 For example We can choose the serial port mode ( asynchronous , Sync , Half duplex ) Serial receive interrupt , And serial port DMA Transmission and so on

It is basically the same as when we configure library functions , however STM32CubeMx Convert these into Graphics and options , We don't need to configure all kinds of things when configuring , We can configure the peripherals we need only by foolproof operation This is CubeMx At the heart of

3 Preview interface

Here is divided into Pin Preview and System Preview

Pin preview is to view what functions are configured on that pin , And each pin position

Click on any pin , Various functions of this pin can be set

This color means Non configurable pin Power dedicated pins are highlighted in yellow . Its configuration Can't change

This color means You configured a I/O The function of the mouth , However, the corresponding peripheral functions are not initialized Pin in no mode state

Green indicates successful configuration

System Preview

System preview is to view various peripherals and configurations GPIO The state of

No problem

A warning , There is a problem with the corresponding configuration Click this option to Peripheral configuration Interface view

Specific configuration of each function (UATR/DMA/ADC/TIM…) We will explain them one by one in the next article , There's no more to it

Specific process 2：

Here we just need to put our LED The corresponding pin is set to GPIO_Output that will do

2 Clock source settings

In fact, it is 32 Clock tree block diagram Let you configure The default clock is the internal clock RC oscillator （HSI）

If you don't understand, please read 《【STM32】 The system clock RCC Detailed explanation ( Hyperdetail , Super comprehensive )》

Specific process 3：

Or first configure it as 72MHz that will do

• Need configuration RCC To use an external clock source

3. engineering management

Set the MCU After each configuration of , The third is the setting of engineering documents

Specific process 4：

Here are the various configurations of the project We only use a limited number of , Other defaults are fine IDE We use MDK5

• The storage directory cannot have Chinese

And then click Code Generator, For further configuration ( a key )

take HAL All of the library .C and .H All copied into the project

advantage ： In this way, if other peripherals need to be added later, they may not be used anymore STM32CubeMX It will be very convenient when

shortcoming ： Large size , Long compilation time ( For a long )

Just copy what you need .C and .H ( recommend )

advantage ： Relatively small volume , The compilation time is short , And the project can be copied

shortcoming ： When adding peripherals, you need to reuse STM32CubeMX Import

Does not copy files , Import directly from the package storage location .C and .H

advantage ： Small volume , Save hard disk space

shortcoming ： Copy to another computer or package location changes , You need to modify the corresponding path

Choose your own way

Specific process 5：

And then click GENERATE CODE Create a project

Create success , Open the project

Specific process 6：while Add the following two lines of code in a loop

    HAL_Delay(500);
    HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_15);

Copy

Configure the download tool

Specific process 7：

All configurations of the new project are default We need to choose our own download mode , Check the reset operation after loading and downloading

All your own code, please put it in /* USER CODE BEGIN XXX */ /* USER CODE END XXX */ Between

In this way, when we modify the project, the code you write will not be deleted

Here we are ,STM32CubeMX The introduction to the basic use of , Next, we'll update CubeMX and HAL Library Configuration STM32 Of UART ADC DMA Timer PWM wait

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