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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
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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

Some key RTC registers

In this section, we will explore the characteristics and functions of some of the important registers within the RTC module. These registers are the building blocks that allow us to configure, control, and utilize the RTC’s features effectively. Let’s start with the RTC Time Register (RTC_TR).

RTC Time Register (RTC_TR)

The RTC_TR register is responsible for keeping track of the current time. It maintains the hours, minutes, and seconds in BCD format, ensuring that time is easily readable and manipulable. Here are some of the key fields in this register:

  • Hour tens (HT) and hour units (HU): These bits represent the tens and units of the hour, respectively. They can handle both 24-hour and 12-hour formats.
  • Minute tens (MNT) and minute units (MNU): These bits represent the tens and units of the minutes.
  • Second tens (ST) and second units (SU): These bits represent the tens and units of the seconds.
  • PM: This bit indicates the...
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