Getting Started with STM32 Low Layer (LL): Output Compare
Until now, the timer has only known how to repeat — PWM painting the same waveform over and over, forever. Output Compare is the moment it learns to schedule: instead…
Embedded systems engineering
Firmware, hardware and the details that make them work. Tutorials from the EmbeddedExpertIO engineering community.
[Revised]Emulating UART Part 1: Introduction and environment Setup
In this new series guide, we shall emulate the UART hardware using a clever combination of timers and DMA to achieve effortless, CPU-independent serial…
Getting Started with STM32 Low Layer (LL): PWM Generation
In Part 1, we used a timer to measure time; now we’ll put it to work generating signals instead. In this part, we configure…
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Getting Started with BLE on the STM32WB55: Part 3
In Part 3 of our series, we will configure GATT Services and Characteristics on the STM32WB55 to establish two-way data communication with your smartphone.…
UART Based Sensor Emulation Part 3: Developing the Communication Protocol
This guide walks through building a lightweight, framed UART protocol for emulating a sensor, covering the frame layout, parser design, and error handling needed…
Getting Started with STM32 Low Layer (LL): Delay using Timers
Accurate timing is a fundamental requirement in most embedded applications, whether for blinking an LED, polling a sensor, or driving communication protocols. This guide…
Getting Started with STM32 Low Layer (LL): SPI Transmit in Polling Mod
The Serial Peripheral Interface (SPI) is one of the most common protocols for connecting microcontrollers to external devices such as sensors, memory chips, and…
Getting Started with BLE on the STM32WB55: Part 2
In Part 2 of our series, we will configure the STM32WB55 to initialize its Bluetooth Low Energy stack and start broadcasting advertising packets. You’ll…
Getting Started with STM32 Low Layer (LL): Analog to Digital Converter Multi Channel Continuous Conversion with DMA
Expanding upon our single-channel DMA foundation, this guide scales the STM32F4’s ADC to simultaneously sample multiple analog channels. By enabling the ADC’s scan mode…
Getting Started with STM32 Low Layer (LL): Analog to Digital Converter Single Channel Continuous Conversion with DMA
Taking data acquisition to the ultimate level of efficiency, this guide explores using Direct Memory Access (DMA) to capture continuous single-channel ADC conversions on…