PPT-Interrupts and Interrupt Handling

David Ferry Chris Gill CSE 422S Operating Systems Organization Washington University in St Louis St Louis MO 63130 1 Why Interrupts Interrupts allow a currently executing process to be preempted. An Integrated Approach to Architecture and Operating Systems. Chapter 4. Processor Implementation. ©Copyright 2008 Umakishore Ramachandran and William D. Leahy Jr.. Interrupts, Traps and Exceptions. of the lecture. :. Chandana. :. 1. . Introduction. 2. Example . 3. Definition . 4. Vector table and . Maskable. /. nonmaskable. interrupts . ________________________________________________. Hao. :. Anurag Dwivedi. Let Us Revise. Micro-Controllers. A small . computer integrated . in . a single IC. Has I/O pins, . RAM and Memory. We Use . Atmega. 16. Software Used. CvAvr. : Editor and Compiler. Interrupt Descriptor Table. Slide #. 2. IDT specified as a segment using the IDTR register . Slide #. 3. Calling the IRQ handler. Interrupt Context. Exceptions. First 32 IRQ vectors in IDT. Correspond to events generated by the CPU. Chung-Ta King. National . Tsing. . Hua. University. CS 4101 . Introduction to Embedded Systems. Introduction. In this lab, we will learn. The interrupt of Timer_A in MSP430. The interrupt of port P1 in MSP430. Lesson 11. Arduino Interrupts. Arduino Interrupts. 1. Interrupts Overview. An interrupt is a hardware event. The processor stops what it was doing and calls the code at a specific location, determined by the type of interrupt. Tami Meredith, Ph.D.. CSCI 3431. Why?. Devices need CPU access. E.g., NIC has a full buffer it needs to empty. These device needs are often asynchronous and unrelated to the currently executing process. Design of Microprocessor-Based Systems. Mark . Brehob. University of Michigan. Lecture 6. : Interrupts. January 30. th. . Slides developed in part by . Prof. Dutta. Announcements. Behind due to snow…. Interrupt Handling. David Ferry, Chris Gill. CSE 522S - Advanced Operating Systems. Washington University in St. Louis. St. Louis, MO 63130. 1. Why Interrupts?. Interrupts allow a currently executing process to be preempted. Fall 2009. Kipp Schoenwald. Stephen . Hunte. Joseph Storey. Outline. Interrupts . Vectors and Vector Table. Flow Chart. Applications. Example 1. Example 2. Thermistors. Theory. Applications. Opto-isolators. Interrupts. . Prof. Chung-Ta King. Department of Computer Science. National Tsing Hua University, Taiwan. Materials from . MSP430 Microcontroller Basics. , John H. Davies, Newnes, 2008. 1. From Clock to Timer to CPU. Handling. Presented by: Group#10. Ahmad Ibrahim Fayed.. Ahmad Mohamed . Abd. el-. Fadeel. .. Akram. Ahmad Mohamed.. Hassan Mohamed.. Agenda. Exception handling.. Interrupts.. Interrupt handling schemes.. Opto. -isolators, . Triacs. , and Thermistors. Alex Buchanan. Aaron May. Peter Ngo. Reason for Interrupts. You might want a certain subroutine executed immediately after a request from an external device or from an internal program, providing certain conditions are met.. Fall 2014. Hadi Esmaeilzadeh. hadi@cc.gatech.edu. . Georgia Institute of Technology. Some slides adopted from Prof. . Milos . Prvulovic. Better Devices. Now SW, KEY can be read. Problem: several instructions needed to detect change.