Textbook in PDF format

Improve your projects by leveraging the power of interrupts. This comprehensive guide makes it easy to understand and use interrupts with the ATmega328P microcontroller found on Arduino boards.
With over 20 interrupts available, this book covers almost all of them and provides background information on how they work. You’ll work through the steps and code examples required to configure each of the covered interrupts. You'll also learn how to use them with Arduino, AVR C++ and with other development systems, like PlatformIO.
Arduino Interrupts
Reset Interrupt
External Interrupts INT0/INT1
Pin Change Interrupts
Watchdog Interrupt
Timer/Counter Interrupts
SPI Interrupt
USART Interrupts
Analog-to-Digital Converter Interrupt
EEPROM Ready Interrupt
Analog Comparator Interrupt
TWI Interrupt
A Real-World Example
A Circular Buffers
B Sleep Modes
C Debouncing Switches
D AVRTWIlib