This tutorial series will start from the most basic theories and practices, detailing how to build the STM32F103C8T6 minimum system. The article will divide the minimum system into several modules for sequential introduction, thoroughly analyzing the circuit topology and the role of each component in the circuit along with reasons for their selection. This ensures … Read more
Introduction The STM32 series chips are developed based on the Cortex-M3 core. They adopt the industry-leading Cortex-M3 core architecture, utilizing Harvard architecture and the Thumb-2 instruction set. They can achieve 32-bit performance with a 16-bit code density. Additionally, with single-cycle multiplication instructions, hardware division instructions, and a built-in fast interrupt controller, STM32 chips can run … Read more
Click the above “Chuangxue Electronics” to follow and easily learn electronic knowledge. Chuangxue Electronics Subscription Daily updates on technical articles in the electronics industry and the latest news on microcontrollers, allowing you to learn easily anytime, anywhere. In the debugging of STM32 microcontrollers, a series of issues may arise. This article mainly introduces the possible … Read more
Signal Acquisition and Control Circuit Board Based on STM32F373 – Production Process[1] 01 STM32F373 Debugging Process 1. Introduction This is the signal acquisition and control circuit board just made, designed based on the STM32F373 microcontroller. Below, we will debug this freshly soldered circuit board to prepare for the subsequent software development. 2. Preliminary Debugging 1. … Read more
● Significance of the Watchdog 1、 The c language execution process In microcontrollers, c programs execute sequentially starting from address 0, where the PC pointer indicates the current execution address. For the STM32F407, as the code executes, the PC pointer continuously moves along the memory addresses. When it reaches the last statement of the main … Read more
Previously, when using STM32’s SPI to control many external chips, there was only one chip select for a single SPI peripheral. How can we achieve independent chip selection for one master and multiple slaves? SPI Bus Topology Generally, the SPI bus is connected as shown in the figure below, with one master and multiple slaves. … Read more
1. Introduction The previously made test circuit board for the STM32F373 did not have the 16-bit high-precision ADC pins exposed, so a new board was made to test the performance of the 16-bit ADC in the F373. 2. Designing the Circuit Board Based on the previous experimental circuit board, the original output pin header was … Read more
Introduction Many people who have learned STM32 share a common characteristic: they can only use some representative hardware functions, such as AD conversion, and can only perform single conversions, while they struggle with looping or multiple conversions. This leads to the necessity of referring to the chip manual; however, the problem arises because the chip … Read more
The ECG acquisition includes two parts: analog acquisition and digital processing. This design captures the human ECG signal using AgCl electrodes and a three-lead ECG acquisition line. The signal is then processed through a preamplifier circuit, bandpass filter circuit, and a 50 Hz twin-T notch filter before being amplified by the main amplifier circuit and … Read more
The STM32F103VCT6 features two 12-bit DACs. The conversion speed of the DAC has not been confirmed, but some online sources suggest a frequency of 1MHz, which means 1us. The ADC conversion time at a working frequency of 56MHz is 1us, and at 72MHz it is 1.17us. If there is a symmetrical relationship between AD and … Read more