Tag: dma

Interrupt, DMA serial communication

1. Serial communication based on interrupt mode 1. Configure the project through CubeMX 1. Configure the project through STM32CubeMX (1) Set up RCC Set High Speed Clock (HSE) to Crystal/Ceramic Resonator (2)Set SYS Here you need to set the Debug column to Serial Wire (3) Set USART Here I chose the USART1 configuration and set […]

Serial port interrupt communication and DMA communication based on hal library

Understand the serial port protocol and RS-232 standard, as well as the difference between RS232 level and TTL level; understand the working principle of the “USB/TTL to 232″ module (taking the CH340 chip module as an example). Use the HAL library (or standard library) method to set the USART1 baud rate to 115200, 1 stop […]

Week 8 Experiment—-Serial communication based on interrupt/DMA method

Experimental tasks: Understand the serial port protocol and RS-232 standard, as well as the difference between RS232 level and TTL level; understand the working principle of the “USB/TTL to 232” module (taking the CH340 chip module as an example). Use the HAL library (or standard library) method to set the USART1 baud rate to 115200, […]

STM32 serial port communication based on interrupt/DMA

Article directory 1. Expansion of relevant knowledge 1. About serial communication protocol 2. About RS-232 standard 2.1 Definition of interface 2.2 Hardware connection 2.3**Level and Timing** 3.The difference between TTL level and RS-232 level (1) TTL level standard (2), RS232 standard 2. STM32cubx settings 3. keil project (1) Implement the STM32 system to continuously send […]

stm32 implements serial communication (interrupt/DMA) based on HAL library

Table of Contents 1. Topic requirements 2. Process presentation 1. Serial protocol and RS-232 standard (1) Serial communication protocol (2) RS–232 standard 2. The difference between TTL level and RS232 level 3. Understand the working principle of the “USB/TTL to 232” module (taking the CH340 chip module as an example) 4. The HAL library uses […]

Embedded Systems Week 8 Experiment: Serial Communication Based on Interrupt/DMA Mode

1 Experimental task: (1) Understand the serial port protocol and RS-232 standard (2) And the difference between RS232 level and TTL level; (3) Understand the working principle of the “USB/TTL to 232” module (taking the CH340 chip module as an example). Use the HAL library (or standard library) method to set the USART1 baud rate […]

Build container images using Podman and Buildah

This is the second in a series of blog posts about building container images. The series starts with “How will we build container images in the future?” “start. This article explores how building images has changed since Docker was first released and how to overcome the many limitations of using Dockerfiles. This article focuses on […]

STM32 serial communication is implemented using DMA

Use DMA method in hal library to implement serial communication for stm32 When stm32 sends continuous hello windows statements to the PC, we can use the interrupt service program to reversely control whether to continue sending. Here, ‘*’ means to continue sending and ‘#’ means to stop sending. First of all, we need the corresponding […]

Serial communication based on DMA

Article directory 1. Main tasks 2. About the serial port 2.1 Serial protocol 2.2RS-232 standard 2.3 The difference between TTL standard and RS-232 standard 2.4USB to TTL principle 3. Use DMA to implement serial port sending and receiving 3.1 Create a project using the HAL library 3.3DMA serial port communication 3.3.1 DMA Overview 3.3.2 DMA […]