Author: Eileen David

The GNU Compiler Collection (GCC) is a widely used compiler system that supports multiple programming languages including C, C++, Objective-C, and more. GCC can generate code for a variety of processor architectures including ARM. Installing GCC for ARM allows you to compile code specifically for ARM-based systems. Here is a step-by-step guide on how to

Yes, the GNU Compiler Collection (GCC) does work on ARM processors. GCC is a widely used compiler system that supports multiple programming languages and targets various instruction set architectures, including ARM. GCC can generate both 32-bit and 64-bit ARM machine code that is optimized for different ARM architectures. This allows developers to compile source code

The interrupt vector table (IVT) is a key component in ARM Cortex microcontrollers and processors. It provides the mapping between interrupt sources and their corresponding interrupt service routines (ISRs). Understanding where the IVT is stored in memory is important for effective and efficient interrupt handling. What is the Interrupt Vector Table? The interrupt vector table

Arm sleep-on-exit is a power saving feature in ARM processors that allows the processor to enter a low power sleep state when exiting certain operations. When enabled, this feature can reduce overall power consumption of ARM-based devices. What is Sleep Mode? Sleep mode, also known as low power or standby mode, is an operating state

Real-time operating systems (RTOS) are designed to execute application tasks in a timely and predictable manner. One key mechanism that enables real-time responsiveness in RTOS is context switching. Context switching allows the CPU to pause execution of one task and resume execution of another task in a seamless and efficient manner. The ability to rapidly

Lazy context switching is a technique used in operating systems and processors like ARM to improve performance and reduce overhead associated with context switches. A context switch refers to the process of storing and restoring the state of a CPU so that execution can be resumed from the same point at a later time. This

The ARM Cortex-M4 processor has a flexible and configurable interrupt handling system that allows developers to respond quickly and efficiently to events. Interrupts are a key part of embedded systems programming and proper configuration is necessary for robust and responsive applications. Cortex-M4 Interrupt Sources There are several potential sources of interrupts in the Cortex-M4 system:

The Cortex-M interrupt stack is a key part of how interrupts are handled on Cortex-M processors. It provides a dedicated stack for storing context during interrupt handling so that the main stack is not disrupted. Understanding how the interrupt stack works is important for Cortex-M firmware developers to properly leverage interrupts and write interrupt handlers.

The EPSR (External Physical State Register) is a 32-bit register present in ARM Cortex processors that indicates the current physical state of the processor. It provides information about the instruction set state, endian state, overflow and carry flag values, and more. Understanding the layout and meaning of the bits in the EPSR register is important

The ARM calling convention refers to how function arguments are passed and return values are handled when making function calls in ARM assembly language. Understanding the ARM calling convention is important for writing efficient and compliant assembly code that can properly interface with other functions. In the ARM calling convention, the first 4 integer or