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Bare-Metal Embedded C Programming

You're reading from   Bare-Metal Embedded C Programming Develop high-performance embedded systems with C for Arm microcontrollers

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Product type Paperback
Published in Sep 2024
Publisher Packt
ISBN-13 9781835460818
Length 438 pages
Edition 1st Edition
Languages
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Author (1):
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Israel Gbati Israel Gbati
Author Profile Icon Israel Gbati
Israel Gbati
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Toc

Table of Contents (21) Chapters Close

Preface 1. Chapter 1: Setting Up the Tools of the Trade FREE CHAPTER 2. Chapter 2: Constructing Peripheral Registers from Memory Addresses 3. Chapter 3: Understanding the Build Process and Exploring the GNU Toolchain 4. Chapter 4: Developing the Linker Script and Startup File 5. Chapter 5: The “Make” Build System 6. Chapter 6: The Common Microcontroller Software Interface Standard (CMSIS) 7. Chapter 7: The General-Purpose Input/Output (GPIO) Peripheral 8. Chapter 8: System Tick (SysTick) Timer 9. Chapter 9: General-Purpose Timers (TIM) 10. Chapter 10: The Universal Asynchronous Receiver/Transmitter Protocol 11. Chapter 11: Analog-to-Digital Converter (ADC) 12. Chapter 12: Serial Peripheral Interface (SPI) 13. Chapter 13: Inter-Integrated Circuit (I2C) 14. Chapter 14: External Interrupts and Events (EXTI) 15. Chapter 15: The Real-Time Clock (RTC) 16. Chapter 16: Independent Watchdog (IWDG) 17. Chapter 17: Direct Memory Access (DMA) 18. Chapter 18: Power Management and Energy Efficiency in Embedded Systems 19. Index 20. Other Books You May Enjoy

Understanding RTCs

In this section, we will enter the world of RTCs, understanding what they are and how they work before exploring common use cases through a few interesting case studies. Let’s get started!

RTCs are specialized hardware devices found in many microcontrollers and embedded systems. Their primary function is to keep track of the current time and date, even when the main power supply is turned off. Imagine them as the little timekeepers of the digital world, ensuring that the clock never stops ticking, no matter what.

RTCs are crucial in applications where timekeeping is essential. This includes everything from simple alarm clocks to complex data logging systems, where accurate timestamps are necessary. An RTC continues to operate on a small battery when the main system is powered down, maintaining accurate time and date information. Let’s see how they work.

How do RTCs work?

At the heart of an RTC is a crystal oscillator, which provides a stable...

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