Today's test found that the PWM output of TIM2 is invalid. It turns out that
The clock of TIM2 is wrong: RCC_APB2PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); should be changed to
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
The clock is written incorrectly, resulting in invalid configuration and all register values are zero.
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Recommended ReadingLatest update time:2024-11-16 13:33
Understanding of STM32 NVIC register direction
The interrupt vector nesting controller is used to manage all interrupts and events, including interrupt enable and disable, and interrupt priority. This belongs to the kernel, so ST's reference manual has little description of it, but it is very important. To understand it, you need to read ARM's "Cortex™-M4 Devices
[Microcontroller]
stm32 program downloaded successfully but does not run
Debugging the stm32 program, the following problems were found:
When writing a program for STM32, when there is no SD card part in the program, the program can be downloaded and run normally. When the SD card plus file system is running in the program, the program can be downloaded normally but cannot run norma
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STM32 serial port flag and it flag
Today I used the serial port of stm32 and configured it to receive data. You can imagine what the result was, it was completely useless! Later, I slowly discovered the problem and made the following notes: ITStatus USART_GetITStatus(USART_TypeDef* USARTx, uint16_t USART_IT); USART_IT parameters: #define USART_IT_PE
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STM32 Getting Started: Lighting
Operation on pins: E.g. light up the LED light: 1. First, you need to know the pins corresponding to the LED lights, find its module block diagram and clock tree in the datasheet of the corresponding chip, find the parent clock and turn it on. Then initialize it with the structure, and configure the corresponding
[Microcontroller]
Using the PWM function of the microcontroller to realize DAC with the help of filters
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Porting STM32 firmware library to IAR
As an embedded software engineer, you should have good habits and build projects with clear levels.
1. Create a folder to store the project and name it GPIO
2. Open the GPIO folder, create a subfolder project (for storing project-related files), and then create a readme.txt (for the description of the proje
[Microcontroller]
Some common problems in stm32 development using MDK
1. Solution: Keil reports an error: invalid redeclaration of type name "s32" Answer: Generally, you need to add several fixed header file paths in Include Paths in the Target Options C/C++ tab. ..CMSISCM3CoreSupport ..CMSISCM3DeviceSupportSTSTM32F10x ..STM32F10x_StdPeriph_Driverinc ..userinc It is a header fil
[Microcontroller]
Transient Modeling and Analysis of Single-Phase UPF Boost PWM Converter
Figure 1 shows the block diagram of a single-phase UPF Boost PWM converter, which is a dual-loop control system with a Boost converter as the main circuit. The outer loop is a voltage loop, which adjusts the average value of the output voltage to make it close to the voltage set value Ur. The inner loop is a current
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Microcontroller and Embedded Systems Bible
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