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Hello, welcome back.

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In this lesson, we should talk about event groups.

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Event groups allow a task to wait in the blocked state for a combination of one or more events to occur,

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event groups on block or the tasks that are waiting for the same event or a combination of event when

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the events occur.

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We can use event groups for synchronizing tasks and we can also use them for broadcasting events to

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multiple tasks.

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Event groups reduce the usage of RAM by allowing us to replace multiple binary semaphores with a single

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event group.

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The event group is made up of a set of events, flags, an event flag is a boolean value, meaning it's

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one or zero, and this is used to indicate whether an event has occurred or not.

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An event flag is stored in a single bit and the status of all event flags can be stored in a single

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variable.

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Event flags are also called event bids because the Apitz.

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So to configure this, we can set the the number of events fit in an event group that our system uses

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in our free hour to figure out what I mean by this is by default, if the value config use 16 bits is

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set, such one, then each event group that we create can contain eight usable events bits.

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But if we set you config use 16 bits, it takes to zero.

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Then each event group that we create can use twenty four events bits.

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So this can be done of course, in our free conflict or HFA.

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So this is an overview of events, groups.

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Let's go to our I.T. and see how they work and real life of you, have a nice day.