ARM Cortex M4 Cookbook by Dr. Mark Fisher

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By Dr. Mark Fisher

About This Book

  • This booklet makes a speciality of programming embedded platforms utilizing a pragmatic approach
  • Examples exhibit tips to use bitmapped pix and control electronic audio to supply extraordinary video games and different multimedia applications
  • The recipes during this ebook are written utilizing ARM's MDK Microcontroller improvement equipment that's the main complete and available improvement solution

Who This publication Is For

This ebook is geared toward people with an curiosity in designing and programming embedded platforms. those may well comprise electric engineers or desktop programmers who are looking to start with microcontroller purposes utilizing the ARM Cortex M4 structure very quickly body. This book's recipes is additionally used to help scholars studying embedded programming for the 1st time. easy wisdom of programming utilizing a high-level language is key yet these accustomed to different high-level languages similar to Python or Java do not have an excessive amount of trouble deciding on up the fundamentals of embedded C programming.

What you are going to Learn

  • Use ARM's uVision MDK to configure the microcontroller run time surroundings (RTE), create initiatives and bring together, obtain, and run easy courses on an assessment board
  • Use and expand gadget relatives packs to configure I/O peripherals
  • Develop multimedia purposes utilizing the touchscreen and audio codec beep generator
  • Write multi-threaded courses utilizing ARM's real-time working procedure (RTOS)
  • Write serious sections of code in meeting language and combine those with capabilities written in C
  • Fix difficulties utilizing ARM's debugging device to set breakpoints and consider variables
  • Port uVision tasks to different open resource improvement environments

In Detail

Embedded microcontrollers are on the center of many daily digital units. The so-called web of items drives the marketplace for such know-how, lots in order that embedded cores now signify ninety% of all processors bought. The ARM® Cortex® M4 is among the strongest microcontrollers out there. The publication starts with an creation to the ARM® Cortex® kin and we disguise the set up of the ARM® uVision built-in improvement setting and subject matters reminiscent of aim units, evaluate forums, code configuration, and GPIO. you are going to then know about center programming issues. you will discover out approximately complex elements equivalent to facts conversion, multimedia help, real-time sign processing, and real-time embedded platforms. through the top of the e-book, it is possible for you to to effectively create strong and scalable ARM® Cortex® established applications.

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Extra resources for ARM Cortex M4 Cookbook

Example text

How to do it… 1. As usual, we'll start our development by making a new folder named helloBounce_c2v0. Create a project, and configure the RTE to include software support for the Graphic LCD board feature (that is, clone the folder helloLCD_c2v0, from the previous recipe). 2. c, and include it in the project. height) unsigned long num_ticks = 5; HAL_Init ( ); SystemClock_Config ( ); GLCD_Initialize(); GLCD_SetBackgroundColor (GLCD_COLOR_WHITE); GLCD_ClearScreen (); GLCD_SetForegroundColor (GLCD_COLOR_BLUE); GLCD_SetFont (&GLCD_Font_16x24); GLCD_DrawChar (x, y, 0x81); /* Draw Ball */ for (;;) { /* superloop */ wait_delay(num_ticks); /* update ball pstn */ /* add code to update ball position and check for collisions here */ GLCD_DrawChar (x, y, 0x81); /* Redraw Ball */ } /* end for */ } 3.

This figure depends on the processor architecture, the clock speed, the memory performance, and so on. The microcontroller can be clocked from one of three oscillator sources. A high speed external (HSE) clock is derived from a 25 MHz crystal oscillator connected between two pins of the microcontroller. A high speed internal (HSI) clock is sourced from an internal 16 MHz resistor-capacitor (RC) controlled oscillator, and a Phase Locked Loop (PLL) can be configured to provide multiples of either HSE or HSI.

There's more… To understand how the processor achieves this level of performance, we need to look at the processor architecture. com. ARMv7-M is a 32-bit architecture and the internal registers and data path are all 32-bit wide. ARMv7-M supports the Thumb Instruction Set Architecture (ISA) with Thumb-2 technology that includes both 16 and 32-bit instructions. ARM processors were originally inspired by Reduced Instruction Set Computing (RISC) architectures developed in the 1980s. RISC architecture attempted to improve on the performance of traditional computer architectures of the era that employed the so-called Complex Instruction Set Computing (CISC) architectures, by defining an ISA that supported a small number of instructions, each of which could be executed in one processor clock cycle, and so achieve a performance advantage.

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