AVR®: Using Timer Overflow IRQs

 In this video:

  • Overview of the timer-counter and block diagram.
  • Calculate the frequency of a timer-counter overflow.
  • Determine the slowest an 8-bit timer can overflow, running the CPU at 16 MHz.
  • Register the configuration to set up a 16-bit timer to overflow twice a second, including setting the timer to prescalar and enabling the timer overflow IRQ.
  • Add the AVR® Libc header file for interrupts.
  • Toggle the LED in the timer overflow Interrupt Service Routine (ISR).

Next Video:

Using Timer Compare Match IRQs

  Return to Top

© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.