How does one do integer (signed or unsigned) division on ARM?

Integer division on ARM processors is done using the SDIV and UDIV instructions for signed and unsigned division respectively. Here is a detailed guide on how integer division works on ARM and how to utilize the division instructions. Overview of Integer Division on ARM On ARM processors, integer division is done in the Arithmetic Logic…

Disabling All Interrupts on ARM Cortex-M0

The ARM Cortex-M0 is an extremely popular 32-bit embedded processor used in a wide range of microcontroller units (MCUs). As an ultra low-power processor, the Cortex-M0 is designed to maximize energy efficiency in IoT and industrial applications. When optimizing for low-power usage, it may be necessary to disable peripheral interrupts to avoid waking the processor…

Difference Between ARM Cortex M0 and M0+

The ARM Cortex-M0 and Cortex-M0+ are two of ARM’s most popular low power microcontroller cores. Both are 32-bit RISC processors designed for embedded applications requiring high efficiency and low cost. The Cortex-M0+ is an evolution of the Cortex-M0 with improvements in performance, power consumption and features. Key Differences Here are some of the main differences…

ARM Cortex-M0 vs Cortex-M23

The ARM Cortex-M0 and Cortex-M23 are two low-power microcontroller cores designed for embedded and IoT applications. The main differences between the M0 and M23 cores come down to performance, features, and intended use cases. Overview The Cortex-M0 is a 32-bit ARM processor optimized for low-cost and low-power embedded applications. It is an extremely compact and…

Cortex-M0 Interrupt Priority

The Cortex-M0 is an ultra low power 32-bit microcontroller core designed by ARM. It is intended for use in embedded systems requiring high efficiency and low cost. The Cortex-M0 implements the ARMv6-M architecture, which includes support for managing interrupts through a Nested Vectored Interrupt Controller (NVIC). When an interrupt occurs on the Cortex-M0, the processor…

How Many Registers Are Provided in Arm Cortex-M0?

The ARM Cortex-M0 is the smallest and simplest processor in the Cortex-M series of ARM processors. It is designed for microcontroller applications that require minimal power consumption and cost. The Cortex-M0 has a 32-bit RISC architecture with a reduced instruction set optimized for embedded applications. One of the key features of any processor is the…

How to Speed Up DSP Processing Using Cortex-M0+?

The Cortex-M0+ processor from ARM is a very popular choice for embedded applications requiring digital signal processing (DSP) capabilities. With its optimized DSP instructions, the Cortex-M0+ can deliver significant performance improvements for math-intensive DSP algorithms. However, there are several techniques developers can use to further speed up DSP workloads on the Cortex-M0+. Optimize Algorithm Implementation…

Cortex M0 placing interrupt vector in ram for application starting from a proprietary bootloader

Placing the interrupt vector table in RAM instead of flash memory can provide flexibility for applications using a custom or proprietary bootloader on Cortex-M0 microcontrollers. This allows the application interrupt handlers to be modified at runtime without needing to reprogram the flash memory. Some key considerations when implementing this approach include: Benefits of placing vector…