Using DMA in normal (non-circular) mode with the IDLE line interrupt turns UART reception into a smart, event-driven system. Instead of blindly filling buffers, the DMA captures bursts of unknown-length data in one shot, and...
READ MOREThis guide demonstrates how to interface a GLCD12864 display based on the ST7920 controller with an STM32 microcontroller using the U8G2 graphics library. We will cover hardware setup, library integration, and display initialization to build a...
READ MOREThis guide walks you through working with the SSD1336 SPI color OLED display using STM32 MCUs. In part one, we’ll cover the SSD1331 controller basics, environment setup, and hardware connections to get started. In this guide, we shall cover the...
READ MOREIn this part of our UART guide series, we will explore how to receive data of unknown length using interrupts triggered on each incoming character.This approach allows the STM32 to handle variable-length messages efficiently, reacting in real...
READ MOREIn this part of the guide, the emulated I²C sensor will act as a data source, sending predefined or dynamically generated values back to the master upon request. This simulates the behavior of real sensors, where the master first selects a...
READ MOREIn this part, we focus on receiving data using both polling and interrupt-driven methods. Polling continuously checks the UART status flags for incoming data, while interrupt mode allows the CPU to handle other tasks and only responds when data...
READ MOREThe SH1106 is a popular monochrome OLED display driver, commonly used in small screens ranging from 0.96″ to 1.3″, offering high contrast and low power consumption. It communicates via SPI or I²C interfaces, making it suitable for...
READ MOREPWM Input mode on STM32 timers is a powerful feature that allows the microcontroller to directly measure the characteristics of an incoming PWM signal, such as its frequency and duty cycle. By configuring the timer’s input capture channels...
READ MOREIn this part, we will use the U8g2 library to interface the popular SSD1306 OLED display with STM32. This will demonstrate how to initialize the display and render text and graphics through U8g2. In this guide, we shall cover the following: 5...
READ MOREIn the previous guide of PWM (here), we saw how to configure the timer to operate in PWM mode and update the duty cycle using for loop. In this guide, we shall use DMA and set of predefined duty cycle to update two channels of PWM. In this guide...
READ MOREIn this part of the guide, the emulated I2C sensor will handle incoming configuration data sent by the master device. This allows the STM32 to mimic a real sensor’s behavior by accepting register writes that define its operating mode and...
READ MOREThis guide focuses on implementing ADC oversampling on STM32 to improve resolution and reduce noise in analog signal acquisition. It explains the oversampling principle, hardware configuration, and how to leverage STM32’s built-in support...
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