PPT-Timers and Interrupts

Anurag Dwivedi Let Us Revise MicroControllers A small computer integrated in a single IC Has IO pins RAM and Memory We Use Atmega 16 Software Used CvAvr Editor and Compiler. © . Copyright 2013 - 2017 Ontario Swimming Officials’ Association. Level 1. 2. Today. Plan of the pool deck. The Officials. Up the Ladder. Marshal. Safety Marshal. Role of the Timer/ Timekeeper. The Paperwork. Mutual Exclusion with Hardware Support. Thomas Plagemann. With slides from. Otto J. Anshus & Tore Larsen. (University of Tromsø). and Kai Li. (. Princeton University. ). Overview. Interrupts:. Ganesh Pitchiah. . What’s an MCU ?. Frequency = 8 MHz. Time Period = 1/f. = 0.125 us . Code for Switching LED. int a; . // . Define . variable . © . Goodheart-Willcox. Co., Inc.. Use non-retentive and retentive timer ON-delay instructions to create PLC ladder logic diagrams.. Use move (MOV) instructions to create variable preset value timer instructions.. by. Dr. Amin Danial Asham. References. Programmable . Controllers-Theory and Implementation, 2nd Edition, L.A. Bryan and E.A. Bryan . Timers. PLC timers . are . internal instructions that provide the . Akos Ledeczi. EECE . 6354. , Fall . 2015. Vanderbilt University. Interrupt Basics. Context. Interrupt Service Routine (ISR). Enable/Disable. Nesting. Interrupt disable time. Interrupt response: time between interrupt and start of user ISR execution. 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. RE . 2016/03. Course Outline. Presentation of participants. Introduction. Functions of the chief timekeeper. Before the session. During the session. After the session. Time cards and lane sheets. Questions / . 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. s and. . Time. r. s. An. . embed. d. ed. . s. y. s. t. em. . h. a. v. e. . t. o. . r. espo. n. d. . t. o. . e. v. e. n. ts. . whe. r. e. . t. i. m. i. ng. . i. s. . a. . k. e. y. c. on. s. 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. The Desired Brand Effect Stand Out in a Saturated Market with a Timeless Brand 1. CSE 2431: Introduction to Operating Systems. Instructor: Adam C. Champion, Ph.D.. Outline. Clock Hardware. Clock Software. Soft Timers. 2. Two Types of Clocks. Simple clock: tied to 110- or 220-volt power line, causes an interrupt at every voltage cycle (50 or 60 Hz)..