arm-cortex-expert

To write an ARM Cortex-M UART driver with DMA, configure the peripheral registers, set up the DMA channel for automated data transfer, and implement safe interrupt service routines to handle transfer completion and errors efficiently.

ARM Cortex-M firmware requires memory barriers to enforce operation ordering and cache maintenance routines to ensure data coherency when sharing buffers between the processor core and DMA controllers across memory regions.

Yes, you can use portable Hardware Abstraction Layer patterns to standardize peripheral interfaces like I2C, SPI, and UART, allowing the same driver logic to compile and run across STM32, Teensy, nRF52, and SAMD platforms.

Design safe ARM Cortex-M interrupt service routines by keeping execution deterministic, minimizing latency, protecting shared memory with proper barriers, and deferring non-critical processing to main loop tasks.

The best way to structure an SPI driver module for Cortex-M devices is using layered architecture with a portable HAL base, hardware-specific initialization, and clear abstractions for blocking and DMA-based asynchronous transfers.

Yes, ARM Cortex-M ADC and DAC peripheral drivers require careful interrupt configuration, precise timer triggering for sampling rates, and appropriate DMA channel routing to move analog data without processor overhead.