This ARM assembly programming course will help you gain a solid understanding of bare-metal firmware development for ARM-based microcontrollers. You'll learn how to navigate the microcontroller reference manual and datasheet to extract the right information to build peripheral drivers and firmware like a pro. This course does not use any libraries and only applies the ARM assembly language. The course starts with an overview of ARM Cortex-M, and then takes you through STM32 general-purpose input/output (GPIO). Next, you'll get to grips with writing assembly programs with STM32CubeIDE. As you advance, you'll delve into STM32 Universal Asynchronous Receiver-Transmitter (UART), learning everything from writing the UART initialization subroutine to sending characters through the UART. Later, the course covers TM4C123 GPIO, where you will focus on tasks such as toggling GPIO output and writing the GPIO input driver. Finally, you'll download, set up, and install Keil uVision 5 and STM32CubeIDE. By the end of this course, you'll have learned how to configure microcontroller peripherals such as ADC, UART, PWM, GPIO, and timers, and be well-versed with ARM architecture, ARM Instruction Set Architecture (ISA), and building professional embedded firmware in assembly for ARM processors. The code bundle for this course is available at https://github.com/PacktPublishing/ARM-Assembly-Language-from-Ground-Up-2