Introductory Programs with the 32-bit PIC Microcontroller: A Line-by-Line Code Analysis and Reference Guide for Embedded Programming in C

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

H. WardIntroductory Programs with the 32-bit PIC Microcontrollerhttps://doi.org/10.1007/978-1-4842-9051-4_9

9. The Real-Time Clock

Hubert Ward¹  

(1)

Leigh, UK

 

In this chapter, we will look at programming the RTC, Real-Time Clock. There are three approaches to programming the Real-Time Clock that we will look at. The first will be when we simply use an external crystal to create a signal that we can count to synchronize the operation of a clock. The second will use the DS3231 RTC module, which is a separate device we can connect to the PIC. This uses the I²C protocol we have looked at in Chapter 7 to communicate with the PIC.

The third approach will use the ...