Discussion on SystemInit() function of STM32-EEWORLD

Collect

I only knew that systemInit was used to initialize the clock, but I didn't know how to initialize it, so I reorganized it. For details, refer to

[Reprint] STM32 study notes - SystemInit() function

This blog is very detailed, so I won’t go into details.

Write the picture description here

ST recommends an 8M external crystal. Looking at the clock tree, you can see that OSC32_IN and OSC32_OUT do not need to be connected to an external crystal. Just use the internal RC. I have struggled with this issue before and don't know what it is used for.

Keywords：STM32 Reference address：Discussion on SystemInit() function of STM32

Previous article：STM32F4 clock configuration
Next article：STM32 drives stepper motor

Recommended ReadingLatest update time:2024-11-16 19:49

STM32ADC conversion interrupt read

The ADC interrupt reading method is suitable for low-frequency ADC acquisition, while high-frequency AD acquisition must use DMA. The initialization function of ADC interrupt reading only adds an interrupt configuration file compared to the direct reading method in the previous article. The code is as follows: static

[Microcontroller]

Design and implementation of digital oscilloscope based on STM32

0 Introduction With the development of integrated circuits and the adoption of digital signal processing technology, digital oscilloscopes have become intelligent measuring instruments that integrate various functions such as display, measurement, calculation, analysis, and recording. Digital oscilloscopes have gradu

[Test Measurement]

Design and implementation of digital oscilloscope based on STM32

About STM32 software reset code writing

For STM32, there are two ways to reset the software: 1) Use the official software library The system reset function is directly provided in the stm32f10x_nvic.c file of the official software library /****************************************************** ****************************** * Function Name: NVIC_Gen

[Microcontroller]

STM32 Series Part 6 --NVIC Interrupt Priority Grouping

There are only 60 maskable interrupts on the STM32F103 series (68 on the 107 series). Interrupt management method: First, group the STM32 interrupts into groups 0 to 4. At the same time, set a preemption priority and a response priority value for each interrupt. The group configuration is configured in register SCB

[Microcontroller]

STM32 Series Part 6 --NVIC Interrupt Priority Grouping

STM32 MCU (7) Serial communication printf redirection

1. Add header file #include stdio.h 2. Project "Target" -- check "Use MicroLIB" 3. Redefine the fputc function int fputc(int ch, FILE *f) { Uart1_PutChar((u8)ch); //This is a custom function, see serial port interrupt communication, please do not copy blindly return (ch); } After the above configu

[Microcontroller]

STM32 NVIC (interrupt vector, priority) brief introduction

1. Background It is necessary to use the CAN of STM32 for communication. After a series of configurations, it can send and receive normally, and there is only one CAN communication error handling left. The error interrupt enable register has been configured and enabled. After an error occurs, the "CAN1_SCE

[Microcontroller]

STM32 NVIC (interrupt vector, priority) brief introduction

STM32 ADC multi-channel continuous routine

#include "stm32f10x.h" /*RCC clock configuration*/ void RCC_config(void) { ErrorStatus HSEStartUpStatus; /* RCC registers are set to default configuration */ RCC_DeInit(); /* Turn on external high speed clock */ RCC_HSEConfig(RCC_HSE_ON); /* Wait for the external high-speed clock to stabilize*/ HSEStartUpStatus

[Microcontroller]

Question about STM32 SPI slave mode

There are many questions about using STM32 as a slave on the Internet. The main problem is that the slave receives data incorrectly. 1 About the master and slave clock suspension configuration It can be said with certainty that the master and slave clock suspension must be configured to be the same This is clearl

[Microcontroller]

Popular Resources
Popular amplifiers