Introduction to Interrupts

  • Brock J. LaMeres


This chapter introduces the concept of an interrupt (IRQ) as a way to efficiently deal with asynchronous external events that the CPU must handle [1–3]. The details of the MSP430 interrupt system are then presented and an example of using the port interrupts on the LaunchPad board is examined.


  1. 1.
    Texas Instruments Inc. (2019a) MSP430FR4xx and MSP430FR2xx family user’s guide, literature number: SLAU445I, October 2014 – Revised March 2019. Retrieved from:
  2. 2.
    Texas Instruments Inc. (2019b) MSP430FR235x, MSP430FR215x mixed-signal microcontrollers [device-specific data sheet], Literature Number: SLASEC4D, May 2018 – Revised December 2019. Retrieved from:
  3. 3.
    Texas Instruments Inc. (2019c) MSP430FR235x LaunchPad™ development kit user’s guide, literature number: SLAU680, May 2018. Retrieved from:

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Brock J. LaMeres
    • 1
  1. 1.BozemanUSA

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