Author: Holly Lindsey

The Cortex Microcontroller Software Interface Standard (CMSIS) is a vendor-independent hardware abstraction layer for microcontrollers based on Arm Cortex cores. It aims to simplify software re-use across different vendors and microcontroller families. CMSIS provides a common software framework with standardized interfaces and enables easy porting of software between different Arm Cortex-M based microcontrollers. Disadvantages of

The Common Microcontroller Software Interface Standard (CMSIS) is a vendor-independent hardware abstraction layer for microcontrollers based on Arm Cortex processors. It defines interfaces and design methods that provide a common software framework to all Cortex-M processor vendors. CMSIS enables consistent and simple software interfaces to the processor and the peripherals, simplifying software reuse and reducing

ARM Cortex-M processors are extremely popular and widely used in embedded systems due to their power efficiency, performance, and cost effectiveness. Here are some of the key reasons why Cortex-M processors are so important for embedded applications: Power Efficiency Power efficiency is a critical requirement in many embedded systems, especially battery-powered devices. Cortex-M processors are

The ARM Cortex-M4 processor includes features like the Memory Protection Unit (MPU) and write buffer which can improve performance and reliability of embedded systems. However, care must be taken when using the write buffer with MPU enabled to avoid issues. This article provides an overview of the write buffer, MPU, and considerations when using them

A watchdog timer (WDT) is a hardware timing circuit that is used to detect system anomalies and reset the microcontroller or microprocessor if any occur. It is an essential component of many embedded systems, providing an extra layer of robustness and reliability. The main purpose of a WDT is to reset the system if the

A watchdog timer (WDT) is a hardware circuit that is used to detect anomalies and reset the microcontroller if it stops functioning correctly. It is an essential component for building robust and reliable embedded systems. Why use a watchdog? Microcontrollers are susceptible to lockups and crashes due to software bugs, electrical noises, power glitches, etc.

Unaligned memory access refers to reading data from or writing data to memory locations that are not multiples of the word size. For example, on a 32-bit architecture, accessing a 4-byte integer at an address that is not divisible by 4 would be considered unaligned. This is in contrast to aligned memory access where data

The answer is yes, ARM does allow unaligned memory accesses, but with some caveats. ARM processors can perform unaligned loads and stores, but doing so comes with a performance penalty compared to aligned accesses. Additionally, some ARM instruction sets like Thumb and Thumb-2 have greater restrictions on unaligned accesses than the 32-bit ARM instruction set.

The TM4C123G launchpad is a low-cost evaluation board based on the ARM Cortex-M4F processor. It allows users to develop and debug applications for the TM4C123GH6PM microcontroller. Some of the key features of the TM4C123G launchpad are: TM4C123GH6PM Microcontroller The launchpad features the TM4C123GH6PM microcontroller which has the following specifications: The TM4C123G microcontroller provides a robust

The Thumb instruction set is a compressed variant of the ARM instruction set that was introduced in ARMv4T architectures. It is designed to reduce code size by using 16-bit instructions instead of 32-bit instructions. Thumb code is typically 30-40% smaller than equivalent ARM code, which helps reduce memory requirements and improve performance in embedded systems.