Peter Chubb has long been working on a project to move device drivers into user space. Getting drivers out of the kernel, he points out, would have a number of benefits. Faults in drivers (the source ...

This patch series implements support for threaded irq handlers for the generic IRQ layer. Threaded interrupt handlers are not only interesting in the preempt-rt context. Threaded interrupt handlers ...

For most UNIX systems, Linux included, device drivers typically divide the work of processing interrupts into two parts or halves. The first part, the top half, is the familiar interrupt handler, ...

Just as you can often treat device registers as a memory-mapped struct, you can treat an interrupt vector as a memory-mapped array. In my last column, I suggested that you use casts sparingly and with ...

This application note presents the RX family of microcontrollers on using multiple interrupts. The document includes the specifications, the operation confirmation conditions, the hardware and ...

We seen how timers and interrupts work in MBasic (Chapter 10) and learned a bit about assembler programming (Chapter 13) and how to mix assembler with MBasic (Chapter 14). It's time now to fuse these ...

Performance is a topic that never strays far from the mind of most embedded systems developers. However, relatively speaking, many of us have it easy. We develop soft real-time systems in which a few ...

Understanding RISC‑V traps is essential for Chip Designers building RISC‑V CPUs, microcontrollers, and complex SoCs. It’s equally important for Embedded Engineers who develop and debug software stacks ...

When a WFI instruction is executed or when the processor enters sleep mode using the Sleep-On-Exit feature, the processor stops instruction execution and wakes up when an (higher priority) interrupt ...