Scott Allen

108 Articles

ARM Workflow with Interrupts Disabled

Disabling interrupts on an ARM processor can be useful in certain situations where real-time performance and determinism are critical. However,…

Scott Allen 7 Min Read

Arm

Is UART full duplex?

The short answer is yes, UART (Universal Asynchronous Receiver/Transmitter) is a full duplex serial communication protocol. This means UART can…

Scott Allen 7 Min Read

Arm

What is the difference between UART and SPI?

UART (Universal Asynchronous Receiver/Transmitter) and SPI (Serial Peripheral Interface) are both serial communication protocols that are commonly used in embedded…

Scott Allen 10 Min Read

Arm

How Unaligned Memory Access is Handled in ARM Cortex-M4

ARM Cortex-M4 microcontrollers have built-in support for unaligned memory access, allowing data to be accessed from memory addresses that are…

Scott Allen 7 Min Read

Arm

Unaligned access error in Arm Cortex-M

An unaligned access error can occur in Arm Cortex-M microcontrollers when trying to access data at an address that is…

Scott Allen 10 Min Read

Arm

What is the difference between aligned and unaligned access?

Accessing data from memory is a fundamental operation in computing. When a processor needs to read or write data, it…

Scott Allen 7 Min Read

Arm

What is ARM reset handler?

The reset handler, also known as the reset vector, is the first code that runs when an ARM processor starts…

Scott Allen 8 Min Read

Arm

How much memory does the Cortex-M4 have?

The Cortex-M4 is a 32-bit ARM processor core designed for embedded and IoT applications. It is part of ARM's Cortex-M…

Scott Allen 7 Min Read

Arm

How to Enable the FPU in Cortex-M4 Microcontrollers?

The Cortex-M4 processor includes a single precision floating point unit (FPU) that can significantly improve performance for applications using floating…

Scott Allen 7 Min Read

Arm