DMA
Technical notes tagged DMA.
STM32 DAC with Timer Trigger + DMA:Generating Arbitrary Waveforms Without CPU Overhead
STM32 DAC with timer-triggered DMA: configure the DAC at register level, use TIM6 as update trigger, and stream arbitrary waveform samples via circular DMA without CPU intervention. Practical STM32F4/G4/L4 examples.
STM32H7 D-Cache Coherency:The DMA Pitfall Every Embedded Engineer Must Understand
Master STM32H7 data cache maintenance for DMA buffers: SCB_CleanDCache, SCB_InvalidateDCache, SCB_CleanInvalidateDCache, MPU memory type configuration, and a practical template to avoid stale-data corruption on Cortex-M7 peripherals.
STM32 SPI Master Mode at Register Level: Baud Rate, CPOL/CPHA, NSS, and DMA Transfers on STM32F4
A practical register-level guide to configuring the STM32F4 SPI peripheral in master mode: baud rate prescaler, clock polarity/phase, software NSS management, half-duplex bi-directional mode, CRC, and DMA-based full-duplex transfers with complete C code examples for STM32F401.
STM32 ADC Scan Sequence with DMA: Continuous Multi-Channel Acquisition on STM32F4
A practical guide to configuring the STM32F4 ADC in scan mode with continuous conversion and DMA: register-level setup, regular channel sequencing, injected groups, calibration, and a real multi-channel acquisition example for sensor data logging.
STM32 DMA Circular Mode with Double Buffering: The Pattern That Prevents Data Loss
Practical STM32 DMA double-buffering guide: circular mode, half-transfer interrupts, cache coherence on Cortex-M7, DMA mux, UART/ADC examples, and the anti-patterns I fix on client projects.