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catalogue 4. System clock configuration 1. Experiment contents and steps: 2. Hardware description 3. Register description 1. Set PLL (i.e. 1,2,3) 2. Set the read / write cycle (i.e. 4) 3. Start HSE and PLL 4. Set SW (i.e. 5) 5. Set AHB, APB1 and APB2 (i.e. 6) 4. Program design (register) 5. Program design (Standard Library) 6. Progr ...

Obtain the weather and display it on the OLED through STM32 and Esp8266 Experiment overview: send AT command to esp8266 serial port through stm32 to connect it to its own hotspot to obtain the weather, and send it back and display it on OLED through serial port Serial communication Let stm32 communicate with esp8266 through serial port, whic ...

catalogue 0. Bloggers understand: 1. Experiment contents and steps: 2. Hardware description 3. Register description 3.1 SysTick clock and enable: 3.2 SysTick reload value register: 3.3 SysTick interrupt priority: 3.4 SysTick interrupt function: 4. Program design (register) 5. Program design (Standard Library) 6. Program design (HAL L ...

preface I remember that when I first started learning stm32, the first program was to turn on the LED light, but at that time, I only knew about the process and did not know the meaning of each line of code, so today I went back to take notes and understand each line of code. The development board I use is STM32ZET6 of punctual atom.   Working ...

Catalogue of series articles Github open source address Write STM32F103C8T6 driver library from scratch (I) -- STM32CubeMX create and adjust engineering structure Write STM32F103C8T6 driver library from scratch (II) -- write system initialization program and configure clock tree Write STM32F103C8T6 driver library from scratch (III) -- write GP ...

STM32 - external interrupt configuration Overall diagram of external interrupt configuration: The steps are as follows: Configure RCC and turn on the clocks of the peripherals involved here. There is no way to work without turning on the clock peripherals.Configure GPIO and select our port as the input mode.Configure AFIO, select the GPI ...

STM32 drives WS2812B-2020 RGB color lamp (II) In the previous section, we briefly analyzed some hardware driving principles of WS2812B-2020 color lights, and sorted out the driving ideas. Refer to the previous article for details: STM32 drives WS2812B-2020 RGB color lamp (I) Next, we analyze step by step how to use code to light the color lig ...

FreeRTOS operating system preface Counting semaphores are called numerical semaphores. Binary semaphores are equivalent to queues with a length of 1, so counting semaphores are queues with a length greater than 1. Like binary semaphores, users do not need to care about what data is stored in the queue, but only whether the queue is empt ...

Reference: use based on STM32 OLED (IIC) Author: struggling little Yin Release time: 2021-05-07 13:09:26 website: https://blog.csdn.net/boybs/article/details/116465668 IIC introduction IIC protocol introduction IIC communication protocol (inter integrated circuit) is developed by Phiips Philips. Due to its few pins, simple hardware imp ...

catalogue 1. Function introduction 2. Introduction to hardware wiring 2.1 DS18B20 temperature sensor 2.2 ESP8266 WIFI module 3. Case code 3.1 upper computer of QT design 3.2 node B DS18B20 code 3.3 coordinator-ESP8266 code 1. Function introduction This is a remote temperature alarm designed based on CC2530. The ambient temperature ...