Difference between revisions of "Interrupt Service Routine"
(Created page with "==Interrupt Service Routine== An Interrupt Service Routine, or ISR, is a software routine invoked by a hardware device in response to an interrupt. The ISR receives the i...") |
(No difference)
|
Revision as of 20:39, 7 May 2019
Interrupt Service Routine
An Interrupt Service Routine, or ISR, is a software routine invoked by a hardware device in response to an interrupt.
The ISR receives the interrupt, determines a course of action, and the executes this action.
An ISR must perform quickly to avoid slowing down the operation of the device and the operation of all lower-priority ISRs.
