What is time-triggered scheduling?

What is time-triggered scheduling?

Time-triggered architecture (abbreviated as TTA), also known as a time-triggered system, is a computer system that executes one or more sets of tasks according to a pre-determined and set task schedule. The scheduler will‍—‌in turn‍—‌release the system tasks at predetermined points in time.

What is event triggered embedded systems?

In an event triggered system a processing activity is initiated as a consequence of the occurrence of a significant event. In a time-triggered system, the activities are initiated periodically at predetermined points in real-time.

Which is an example of an embedded system?

Consumer electronics include MP3 players, television sets, mobile phones, video game consoles, digital cameras, GPS receivers, and printers. Household appliances, such as microwave ovens, washing machines and dishwashers, include embedded systems to provide flexibility, efficiency and features.

What is event trigger and time trigger?

What is event triggered control?

Event-triggered control is developed to reduce the communication load in networked control systems. This means that output or actuator signals are only transmitted over the network when an event-triggering condition is violated which is designed such that a certain control performance can be guaranteed.

What type of scheduling is there in RTOS?

Currently, the most used algorithms in practical RTOS are non-preemptive scheduling, round-robin scheduling, and preemptive priority scheduling.

What is event triggered and time-triggered?

Is an ATM an embedded system?

An ATM is an embedded system which utilizes a crowded computer to set up a network between a bank computer and an ATM itself. It also has a microcontroller to bear both input and output operations.

What type of triggering is embedded system?

Based on triggering The embedded systems are classified into two types based on the triggering of the systems: time-triggered and event-triggered. If a system is activated or triggered based on the pre-defined task or preset time, then such a system is said to be the time-triggered embedded system.

How does a time-triggered system work?

In the case of time-triggered systems, the event to act on is somehow generated by a clock: read temperature from a DS18B20 every second, calculate the mean over those measurement values and send a message with this mean value every minute,

How to schedule a job by adding a job schedule?

To schedule a job by adding a job schedule entry, use the Add Job Schedule Entry ( ADDJOBSCDE) command. This command adds an entry to the job schedule object. Add a job schedule entry to the job schedule.

How does preemptive scheduling work in RTOS?

In preemptive RTOS, the scheduler divides CPU time into fixed width slices and whenever such a slice is elapsed, the currently running task is interrupted, its state (the stack frame, all the CPU registers including the program counter) is saved, and the next task which is ready to run is executed.

What is an example of a scheduler?

An example of this scheduler can be seen in this very simple MSP430 based project on Gitlab. It is a tea thermometer and timer. The MSP430 and the LaunchPad development kit. Images courtesy of Texas Instruments.